Control method, control device, and electronic device for regeneration of a vehicle particulate trap

Abstract

The application provides a control method, a control device and an electronic device for regeneration of a vehicle particulate trap, the vehicle comprising an engine and a hydraulic control system, wherein the method comprises: in the case that the vehicle is in a driving regeneration working condition, acquiring a load rate of the engine, a speed of the engine and a first temperature of a particulate trap of the vehicle, and determining whether the particulate trap is abnormal in regeneration according to the load rate of the engine, the speed of the engine and the first temperature of the particulate trap of the vehicle, wherein the driving regeneration working condition is a working condition in which the particulate trap is regenerated after the amount of particulate matters of the particulate trap reaches a threshold value during vehicle driving, and the load rate is a ratio of the working load of the engine to the maximum load of the engine; and in the case that the particulate trap is abnormal in regeneration, increasing the working load of the hydraulic control system to eliminate the abnormality in regeneration of the particulate trap. The method can solve the problem of unsuccessful regeneration of the vehicle.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of vehicle regeneration, in particular, to a control method for vehicle particulate trap regeneration, a control device for vehicle particulate trap regeneration, a computer readable storage medium and an electronic device. BACKGROUND

[0002] For vehicle models such as crawler cranes and excavators, there are many low-temperature and low-load working conditions in actual use. If the vehicle is in vehicle regeneration at this time, due to the low load of the whole vehicle, the exhaust temperature will be low, the vehicle regeneration will be overtime, and the regeneration will be unsuccessful. For low-temperature and low-load vehicle models, if the regeneration is unsuccessful for a long time, the particulate trap will eventually be blocked, the whole vehicle will not be able to be used normally, and the vehicle needs to be serviced and regenerated at a service station, which causes great inconvenience.

[0003] Therefore, a method is needed to solve the problem of unsuccessful vehicle regeneration. SUMMARY

[0004] The main purpose of the present application is to provide a control method for vehicle particulate trap regeneration, a control device for vehicle particulate trap regeneration, a computer readable storage medium and an electronic device to at least solve the problem of unsuccessful vehicle regeneration in the prior art.

[0005] According to an aspect of the present application, a control method for vehicle particulate trap regeneration is provided, the vehicle comprising an engine and a hydraulic control system, wherein the method comprises: acquiring a load rate of the engine, a speed of the engine and a first temperature of a particulate trap of the vehicle when the vehicle is in a vehicle regeneration working condition, and determining whether the particulate trap is abnormal in regeneration according to the load rate of the engine, the speed of the engine and the first temperature of the particulate trap of the vehicle, wherein the vehicle regeneration working condition is a working condition in which the particulate trap is regenerated after the amount of particulate matter of the particulate trap reaches a threshold value during vehicle driving, and the load rate is a ratio of the working load of the engine to the maximum load of the engine; in the case that the particulate trap is abnormal in regeneration, increasing the working load of the hydraulic control system to eliminate the abnormality in regeneration of the particulate trap.

[0006] Optionally, the load rate of the engine, the rotating speed of the engine and the first temperature of the particulate filter of the vehicle are acquired, and whether the particulate filter is abnormal in regeneration is determined according to the load rate of the engine, the rotating speed of the engine and the first temperature of the particulate filter of the vehicle, comprising: acquiring the load rate of the engine, and determining whether the load rate of the engine is less than a load rate threshold; acquiring the rotating speed of the engine, and determining whether the rotating speed of the engine is greater than or equal to a first rotating speed threshold and less than or equal to a second rotating speed threshold, wherein the first rotating speed threshold is less than the second rotating speed threshold; acquiring the first temperature of the particulate filter of the vehicle in a first time period, and determining whether the first temperature is less than a first temperature threshold, wherein the starting time of the first time period is after the starting time of the vehicle in the driving regeneration mode, and the ending time of the first time period is before the time of determining that the particulate filter is abnormal in regeneration; in the case that the load rate of the engine is less than the load rate threshold, the rotating speed of the engine is greater than or equal to the first rotating speed threshold and less than or equal to the second rotating speed threshold, and the first temperature is less than the first temperature threshold, it is determined that the particulate filter is abnormal in regeneration.

[0007] Optionally, the load rate of the engine is acquired, comprising: acquiring the current output horsepower of the engine and the rated horsepower of the engine; and calculating the ratio of the current output horsepower of the engine to the rated horsepower of the engine to obtain the load rate of the engine.

[0008] Optionally, the working load of the hydraulic control system is controlled to increase to eliminate the abnormality in regeneration of the particulate filter, comprising: determining the target intensity value of the control signal corresponding to the current temperature difference value according to a first mapping relationship between the temperature difference value and the control signal, wherein the temperature difference value is the difference between the second temperature of the particulate filter of the vehicle and a second temperature threshold, the control signal is an electric signal used to control the hydraulic control system, and the second temperature is the temperature of the particulate filter before the load of the hydraulic control system is controlled to increase; determining the target load value of the hydraulic control system corresponding to the target intensity value of the control signal according to a second mapping relationship between the intensity value of the control signal and the working load of the hydraulic control system; and controlling the working load of the hydraulic control system to increase to the target load value, so that the load rate of the engine is greater than a load rate threshold or the temperature of the particulate filter is greater than a first temperature threshold.

[0009] Optionally, the increasing the working load of the hydraulic control system to the target load value comprises: determining a target number of hydraulic cylinders corresponding to the target load value according to a third mapping relationship between the working load and the number of hydraulic cylinders of the hydraulic control system; and increasing the number of hydraulic cylinders of the hydraulic control system to the target number.

[0010] Optionally, the increasing the working load of the hydraulic control system to the target load value further comprises: determining a target value of pump flow of the hydraulic control system according to a fourth mapping relationship between the working load and the pump flow of the hydraulic control system; and increasing the pump flow of the hydraulic control system to the target value.

[0011] Optionally, the vehicle further comprises a timer, and in the case of the particle trap regeneration abnormality, the increasing the working load of the hydraulic control system to eliminate the particle trap regeneration abnormality comprises: starting the timer at the time of determining the particle trap regeneration abnormality, and simultaneously increasing the working load of the hydraulic control system; and stopping the timer at the time of determining the elimination of the particle trap regeneration abnormality, and simultaneously stopping the timer.

[0012] According to another aspect of the present application, there is provided a control device for vehicle particle trap regeneration, the vehicle comprising an engine and a hydraulic control system, wherein the device comprises: a determination unit configured to, in the case of the vehicle being in a driving regeneration working condition, acquire a load rate of the engine, a speed of the engine, and a first temperature of a particle trap of the vehicle, and determine whether the particle trap is abnormal in regeneration according to the load rate of the engine, the speed of the engine, and the first temperature of the particle trap of the vehicle, wherein the driving regeneration working condition is a working condition in which the particle trap is regenerated after the amount of particulate matter of the particle trap reaches a threshold value during driving of the vehicle, and the load rate is a ratio of a working load of the engine to a maximum load of the engine; and a control unit configured to, in the case of the particle trap being abnormal in regeneration, increase the working load of the hydraulic control system to eliminate the particle trap being abnormal in regeneration.

[0013] According to still another aspect of the present application, there is provided a computer readable storage medium comprising a stored program, wherein the computer readable storage medium is caused to perform any of the methods described above when the program is run.

[0014] According to yet another aspect of the present application, there is provided an electronic device comprising a memory and a processor, the memory having stored therein a computer program, the processor being arranged to perform any of the methods described above by means of the computer program.

[0015] According to the technical solution of the present application, firstly, the load rate of the engine, the rotating speed of the engine and the first temperature of the particulate trap of the vehicle are obtained when the vehicle is in the driving regeneration working condition, and whether the particulate trap is abnormal in regeneration is determined according to the load rate of the engine, the rotating speed of the engine and the first temperature of the particulate trap of the vehicle, wherein the driving regeneration working condition is a working condition in which the particulate trap is regenerated after the amount of particulate of the particulate trap reaches a threshold value during the driving of the vehicle, and the load rate is the ratio of the working load of the engine to the maximum load of the engine; and then the working load of the hydraulic control system is controlled to increase in the case of abnormal regeneration of the particulate trap, so as to eliminate the abnormal regeneration of the particulate trap. By judging the working condition of the vehicle, the load rate of the engine, the rotating speed of the engine and the temperature of the particulate trap, when the working condition of abnormal regeneration of the particulate trap is determined, the load of the hydraulic control system of the vehicle is controlled, and then the load rate of the engine is increased, so as to increase the temperature of the particulate trap and ensure the successful driving regeneration. The problem that the vehicle regeneration is unsuccessful due to the low-temperature and low-load environment of the vehicle in the prior art is solved. BRIEF DESCRIPTION OF DRAWINGS

[0016] The drawings accompanying the specification of the present application form a part thereof, serve to provide further understanding of the present application, and together with the specification explain the present application. The use of these drawings in the description of the present application is only to explain the present application, and should not be construed as an improper limitation to the present application. In the drawings:

[0017] Figure 1 A hardware structure block diagram of a mobile terminal for performing a control method of vehicle particulate trap regeneration according to an embodiment of the present application is shown;

[0018] Figure 2 A flowchart of a control method of vehicle particulate trap regeneration according to an embodiment of the present application is shown;

[0019] Figure 3 A flowchart of a method for determining whether the particulate trap is abnormal in regeneration according to an embodiment of the present application is shown;

[0020] Figure 4 A flowchart of controlling the working load of the hydraulic control system to increase according to an embodiment of the present application is shown;

[0021] Figure 5 A flowchart of a control method of vehicle particulate trap regeneration according to an embodiment of the present application is shown;

[0022] Figure 6 A structure block diagram of a control device of vehicle particulate trap regeneration according to an embodiment of the present application is shown.

[0023] Wherein, the above figures include the following reference signs:

[0024] 102, processor; 104, memory; 106, transmission device; 108, input and output device. DETAILED DESCRIPTION

[0025] It should be noted that the embodiments and features in the embodiments of the present application can be combined with each other without conflict. The technical solutions in the embodiments of the present application will be described in detail below with reference to the drawings and in combination with the embodiments.

[0026] In order for those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, not all. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor should be within the scope of protection of the present application.

[0027] It should be noted that the terms "first", "second" and the like in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects, and do not necessarily indicate a specific order or sequence. It should be understood that the data thus used can be interchanged under appropriate circumstances, so that the embodiments of the present application described herein can be implemented. In addition, the terms "include" and "have" and any variations thereof are intended to cover non-exclusive inclusion, for example, a process, method, system, product or device including a series of steps or units does not necessarily limit to those steps or units clearly listed, but can include other steps or units not clearly listed or inherent to these processes, methods, products or devices.

[0028] For the convenience of description, the following explains some nouns or terms related to the embodiments of the present application:

[0029] DPF: DPF (Diesel particulate filter, referred to as DPF) is a vehicle particle trap, which is a device installed in the exhaust system of diesel engine, used to filter and remove more than 90% of particulate matter from diesel engine, including fine dust particles and harmful particulate matter such as polycyclic aromatic hydrocarbons, effectively reducing black smoke and dust in exhaust gas, improving air quality, and thus achieving exhaust emission standards. DPF works through a variety of principles, mainly including barrier filtration and mesh filtration. During operation, the accumulated particles in the filter screen can be burned by periodic regeneration, i.e. burning the accumulated particles in the filter screen, to restore the permeability and thus prolong its service life. DPF is mainly applied to diesel engine vehicles, diesel high-speed generators, marine diesel engines and diesel tank trucks, etc.

[0030] Regeneration during operation: By controlling the intake air volume and fuel injection volume, the DPF inlet temperature is kept within a reasonable range during normal vehicle operation, thereby completing the regeneration of the DPF.

[0031] Engine: The main function of the engine is to provide power to the vehicle. When the engine rotates, the output shaft also rotates. Through connecting shafts, transmission gears, and other mechanical devices, the engine's torque is transmitted to the various transmission components of the vehicle.

[0032] Hydraulic Control System: The hydraulic control system is responsible for controlling and assisting the engine's output torque, ensuring power is transmitted to each wheel so the vehicle can move normally. The hydraulic system includes the braking system, steering system, transmission system, and suspension system. When the driver presses the brake pedal, high-pressure hydraulic fluid is transmitted to the brake cylinders via hydraulic valves and cylinders, which in turn transmits power to the wheel discs to generate braking force. High-pressure hydraulic fluid drives the power steering system to assist the driver in steering. Different gear sets within the lever box are switched via a hydraulic torque converter and clutch to achieve different gears and speed changes. The compression and extension of the hydraulic cylinders change the distance between the vehicle and the ground, lowering or raising the suspension height.

[0033] As described in the background section, there are many low-temperature and low-load operating conditions in the prior art. If the vehicle is in the process of regenerating while driving, the low load of the vehicle will result in low exhaust temperature, driving regeneration timeout, and unsuccessful regeneration. To solve the above problems, the embodiments of this application provide a control method for regenerating a vehicle particulate filter, a control device for regenerating a vehicle particulate filter, a computer-readable storage medium, and an electronic device.

[0034] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.

[0035] The methods and embodiments provided in this application can be executed on a mobile terminal, computer terminal, or similar computing device. Taking running on a mobile terminal as an example, Figure 1 This is a hardware structure block diagram of a mobile terminal for a control method of regenerating a vehicle particulate filter according to an embodiment of the present invention. Figure 1 As shown, a mobile terminal may include one or more ( Figure 1 Only one is shown in the diagram. A processor 102 (which may include, but is not limited to, a microprocessor MCU or a programmable logic device FPGA, etc.) and a memory 104 for storing data are also shown. The mobile terminal may further include a transmission device 106 for communication functions and an input / output device 108. Those skilled in the art will understand that... Figure 1 The structure shown is for illustrative purposes only and does not limit the structure of the mobile terminal described above. For example, the mobile terminal may also include components that are more... Figure 1more or less components than those shown, or configured differently from those shown. Figure 1

[0036] The memory 104 is operable to store computer programs, such as software programs of application software and modules, such as the computer program corresponding to the control method of vehicle particulate filter regeneration according to the embodiments of the present application. The processor 102 is configured to perform various functional applications and data processing, i.e. implement the above method, by running the computer programs stored in the memory 104. The memory 104 can include a high-speed random access memory, and can further include a non-volatile memory, such as one or more magnetic storage devices, flash memories, or other non-volatile solid-state memories. In some examples, the memory 104 can further include a memory remotely disposed relative to the processor 102, which can be connected to the mobile terminal through a network. Examples of the network include, but are not limited to, the Internet, an intranet, a local area network, a mobile communication network, and a combination thereof. The transmission device 106 is configured to receive or send data via a network. The specific examples of the network can include a wireless network provided by a communication provider of the mobile terminal. In one example, the transmission device 106 includes a network adapter (NIC), which can be connected to other network devices through a base station so as to communicate with the Internet. In one example, the transmission device 106 can be a radio frequency (RF) module, which is configured to communicate with the Internet in a wireless manner.

[0037] In the present embodiment, a control method of vehicle particulate filter regeneration running on a mobile terminal, a computer terminal or a similar computing device is provided. It should be noted that the steps shown in the flowchart of the accompanying drawings can be executed in a computer system such as a set of computer executable instructions, and although a logical order is shown in the flowchart, in some cases, the steps shown or described can be executed in an order different from that shown here.

[0038] Figure 2 is a flowchart of the control method of vehicle particulate filter regeneration according to the embodiments of the present application. As shown in Figure 2 , the method comprises the following steps:

[0039] ​Step S201, in the case that the vehicle is in a driving regeneration working condition, the load rate of the engine, the speed of the engine and the first temperature of the particulate trap of the vehicle are obtained, and whether the particulate trap is abnormal in regeneration is determined according to the load rate of the engine, the speed of the engine and the first temperature of the particulate trap of the vehicle, wherein the driving regeneration working condition is a working condition in which the particulate trap is regenerated after the amount of particulate matter of the particulate trap reaches a threshold value during driving of the vehicle, and the load rate is the ratio of the working load of the engine to the maximum load of the engine.

[0040] Specifically, whether the vehicle is in a driving regeneration working condition can be determined in the following different ways. First, check the prompt information on the instrument panel or screen. Many electric vehicles will have prompt information displayed on the instrument panel during driving regeneration, which can be used to determine whether the vehicle is in a driving regeneration working condition. Second, observe whether the brake light is on. During driving regeneration, the brake light is usually on to alert the vehicle behind. Third, listen to the sound of the motor. During driving regeneration, the motor of an electric vehicle will produce an unusual roar, similar to the sound of a generator operating. Fourth, check the charging status of the energy storage device. If the battery or super capacitor shows that it is charging when the vehicle is decelerating, it is in a driving regeneration state. Fifth, observe the load on the gearbox or linear motor. During driving regeneration, the gear teeth in the gearbox or linear motor usually bear a large load. Sixth, test the driving force. During driving regeneration, the vehicle is set to neutral or the clutch is enabled, and there is no driving force output to the wheels. Since the influencing factors of vehicle regeneration abnormality can include the load rate of the engine, the speed of the engine and the first temperature of the particulate trap of the vehicle, whether the vehicle is abnormal in regeneration can be determined according to the load rate of the engine, the speed of the engine and the first temperature of the particulate trap of the vehicle.

[0041] Step S202, in the case that the particulate trap is abnormal in regeneration, the working load of the hydraulic control system is increased to eliminate the abnormality in regeneration of the particulate trap.

[0042] Specifically, by controlling the load increase of the vehicle hydraulic system, since the load rate is equal to the ratio of the working load to the maximum load, under the condition that the maximum load is unchanged, the load rate of the engine can be increased by increasing the working load, thereby increasing the DPF temperature and ensuring the smooth completion of the driving regeneration. When the working load of the hydraulic control system increases, the following control methods can be used: increasing the supply capacity of the hydraulic system by replacing the hydraulic pump with a larger capacity to meet the greater working load demand. Increasing the hydraulic oil tank volume, the working load of the hydraulic system increases, and more hydraulic oil is needed to meet its energy demand, so the volume of the hydraulic oil tank can be increased. Increase the diameter of the hydraulic cylinder: by replacing the hydraulic cylinder with a larger diameter, the output force and power of the hydraulic system can be improved to meet the greater working load demand. Adjust the working pressure of the hydraulic system, increasing the working pressure of the hydraulic system can increase its output power to meet the greater working load demand. However, it should be noted that adjusting the working pressure must be within the rated pressure range of the hydraulic system. Increase the number of hydraulic valves: increase the output flow and power of the hydraulic system by increasing the number of hydraulic valves to meet the greater working load demand. It should be noted that when the above control methods are used, the pressure resistance of each component and pipeline of the hydraulic system and other related parameters must be matched to ensure the safety and stable operation of the hydraulic system. At the same time, appropriate selection and adjustment should also be made according to the actual situation to achieve the best working effect. In addition, the vehicle hydraulic system control method can also increase the intake volume of the vehicle under no load in the regeneration mode, and improve the vehicle power in the regeneration mode.

[0043] Through the embodiment, first, in the case that the vehicle is in the driving regeneration working condition, the load rate of the engine, the speed of the engine and the first temperature of the particle trap of the vehicle are obtained, and whether the particle trap is abnormal is determined according to the load rate of the engine, the speed of the engine and the first temperature of the particle trap of the vehicle, wherein the driving regeneration working condition is a working condition in which the particle trap regenerates after the amount of particulate matter of the particle trap reaches a threshold value during vehicle driving, and the load rate is the ratio of the working load of the engine to the maximum load of the engine; and in the case that the particle trap is abnormal, the working load of the hydraulic control system is controlled to increase to eliminate the abnormality of the particle trap. By judging the working condition of the vehicle, the load rate of the engine, the speed of the engine and the temperature of the particle trap, when it is determined that the particle trap is abnormal, the load of the vehicle hydraulic control system is controlled to increase the load rate of the engine, thereby increasing the temperature of the particle trap and ensuring the smooth completion of the driving regeneration. The problem of unsuccessful vehicle regeneration due to the vehicle being in a low-temperature and low-load environment in the prior art is solved.

[0044] In the specific implementation process, for example, Figure 3As shown, the step S201 can be implemented by the following steps: a step S2011 of acquiring the load rate of the engine and determining whether the load rate of the engine is less than a load rate threshold; a step S2012 of acquiring the speed of the engine and determining whether the speed of the engine is greater than or equal to a first speed threshold and less than or equal to a second speed threshold, wherein the first speed threshold is less than the second speed threshold; a step S2013 of acquiring a first temperature of the particulate filter of the vehicle in a first time period and determining whether the first temperature is less than a first temperature threshold, wherein the start time of the first time period is after the start time of the vehicle in the driving regeneration working condition, and the end time of the first time period is before the time of determining the abnormal regeneration of the particulate filter; and a step S2014 of determining the abnormal regeneration of the particulate filter in the case that the load rate of the engine is less than the load rate threshold, the speed of the engine is greater than or equal to the first speed threshold and less than or equal to the second speed threshold, and the first temperature is less than the first temperature threshold. The method can further accurately determine the abnormal regeneration of the particulate filter.

[0045] Specifically, the speed of the engine can be acquired by directly reading the speed table, reading through the ECU, listening to the sound and judging the approximate speed, and using the speed sensor. The load rate of the engine less than the load rate threshold indicates that the vehicle is in the low load working condition. The speed of the engine greater than or equal to the first speed threshold and less than or equal to the second speed threshold also indicates that the vehicle is in the low load working condition. The first temperature less than the first temperature threshold indicates that the temperature upstream of the DPF has not reached the regeneration temperature requirement, and thus the abnormal regeneration of the particulate filter can be determined.

[0046] In order to further quickly acquire the load rate of the engine, the step S2021 can be implemented by the following steps: a step S20211 of acquiring the current output horsepower of the engine and the rated horsepower of the engine; and a step S20212 of calculating the ratio of the current output horsepower of the engine to the rated horsepower of the engine to obtain the load rate of the engine. The method can quickly obtain the load rate of the engine by calculating the ratio of the current output horsepower to the rated horsepower of the engine.

[0047] Specifically, the load factor of the engine refers to the proportion of the current load of the engine relative to its maximum possible load. It is mainly calculated according to the current engine output horsepower, speed and torque. There are usually two formulas for calculating the engine load factor, according to the ratio of the current engine output horsepower to the rated horsepower, or, according to the ratio of the current engine output torque to the rated maximum torque. Among them, the current output horsepower and torque can be read in real time through the vehicle torque table or engine detection instrument. In addition, the engine load factor is also related to the emission rate and fuel consumption. When the engine is at low load, i.e. load factor < 30%, fuel consumption is high and emission is low; when the engine is at moderate load, i.e. 30-80%, fuel consumption is low and reasonable, and emission is most moderate; when the engine is at high load, i.e. load factor > 80%, fuel consumption is slightly increased, and emission is increased with the increase of load.

[0048] In order to further realize the precise control of the hydraulic control system, as shown in Figure 4 The above step S202 of the present application can be realized by the following steps: step S2021, determining the target intensity value of the control signal corresponding to the current temperature difference value according to the first mapping relationship between the temperature difference value and the control signal, wherein the temperature difference value is the difference between the second temperature of the particulate trap of the vehicle and the second temperature threshold, the control signal is an electrical signal for controlling the hydraulic control system, and the second temperature is the temperature of the particulate trap before the load of the hydraulic control system is increased after determining the abnormal regeneration of the particulate trap; step S2022, determining the target load value of the hydraulic control system corresponding to the target intensity value of the control signal according to the second mapping relationship between the intensity value of the control signal and the working load of the hydraulic control system; step S2023, increasing the working load of the hydraulic control system to the target load value to make the load factor of the engine greater than the load factor threshold or the temperature of the particulate trap greater than the first temperature threshold. This method can determine the target intensity value of the control signal only by the temperature difference value, and can reduce fuel consumption as much as possible on the premise of ensuring the success of driving regeneration.

[0049] Specifically, the temperature of the DPF can be obtained by, for example, reading by the ECU, using a DPF-specific temperature sensor, judging the approximate temperature using the DPF regeneration signal, observing the exhaust gas temperature to judge the DPF temperature, and detecting by a DPF-specific temperature detector. Since the DPF is embedded with a temperature sensor, the real-time temperature of the DPF can be read by the Engine Control Unit (ECU). The DPF temperature displayed by the ECU built-in or by reading the software is the most accurate. Another method is to install a DPF-specific temperature sensor, which can directly read and display the temperature of the DPF. The DPF needs to reach a certain temperature (which can be 600-700°C) when regenerating, and the current temperature of the DPF can be roughly judged according to the appearance of the regeneration signal whether it has reached the required temperature for regeneration. The temperature of the DPF will eventually affect the temperature of the exhaust gas. By detecting the temperature of the exhaust gas, the approximate temperature of the DPF can also be indirectly reflected. But the accuracy is not high. Using a dedicated DPF temperature gun or a non-contact temperature detector to detect the surface temperature of the DPF is a more accurate way to obtain the temperature of the DPF. But it needs professional equipment, and the temperature distribution of the DPF is uneven. In fact, the electrical signal used to control the hydraulic control system described above can be a voltage pulse signal.

[0050] The step S2023 can be implemented in other ways, for example: step S20231, determining the target number of hydraulic cylinders corresponding to the target load value according to the third mapping relationship between the working load and the number of hydraulic cylinders of the hydraulic control system; step S20232, controlling the number of hydraulic cylinders of the hydraulic control system to increase to the target number. This method can further quickly realize the control of the increase of the working voltage of the hydraulic control system.

[0051] Specifically, there is also a certain mapping relationship between the working load of the vehicle engine and the number of hydraulic cylinders of the hydraulic control system. Hydraulic cylinders are an important component of the hydraulic control system, which is used to convert hydraulic energy into mechanical energy to drive mechanical execution work. The number and size of hydraulic cylinders are one of the important factors to be considered when designing a hydraulic system, and are closely related to the working load of the vehicle engine. When the working load of the vehicle engine increases, the hydraulic control system needs more output force and power to meet the work demand. At this time, the number of hydraulic cylinders or the diameter of the hydraulic cylinder can be increased to increase the output force and power of the hydraulic system. Conversely, when the working load of the vehicle engine decreases, the number of hydraulic cylinders of the hydraulic control system can also be appropriately reduced to avoid wasting energy and hydraulic oil. It should be noted that the number and size of hydraulic cylinders are also affected by other factors, such as the working pressure, flow, valve number, etc. of the hydraulic system. Therefore, in actual application, these factors need to be considered comprehensively to select the appropriate number and size of hydraulic cylinders to meet the working load requirements of the vehicle engine and ensure the normal operation and safe operation of the hydraulic system. At the same time, the installation and debugging of the hydraulic cylinder also need to be carried out according to the relevant standards and specifications to ensure its performance and reliability.

[0052] The above step S2023 can be implemented in other ways, for example: step S20233, determining the target value of the oil pump flow of the hydraulic control system according to the fourth mapping relationship between the working load and the oil pump flow of the hydraulic control system; step S20234, control the oil pump flow of the hydraulic control system to increase to the target value. This method can further quickly realize the control of the increase of the working voltage of the hydraulic control system.

[0053] Specifically, there is a certain mapping relationship between the working load of the vehicle engine and the oil pump flow of the hydraulic control system. Generally speaking, the oil pump flow of the hydraulic control system needs to be adjusted according to the working load of the engine to ensure the normal operation of the hydraulic system. When the working load of the vehicle engine increases, the hydraulic control system needs more hydraulic oil to meet its energy demand. At this time, the oil pump flow of the hydraulic control system needs to be increased to ensure that the output force and power of the hydraulic cylinder can meet the demand of the working load. Conversely, when the working load of the vehicle engine decreases, the oil pump flow of the hydraulic control system can also be appropriately reduced to avoid wasting energy and hydraulic oil. It should be noted that the size of the oil pump flow of the hydraulic control system is also affected by other factors, such as the working pressure, cylinder diameter, valve number, etc. of the hydraulic system. Therefore, in actual application, these factors need to be considered comprehensively to select the appropriate hydraulic control system and oil pump to meet the working load requirements of the vehicle engine and ensure the normal operation and safe operation of the hydraulic system.

[0054] In some embodiments, the step S202 can be further implemented by the following steps: step S2024, when determining that the particle trap regeneration is abnormal, controlling the timer to start timing and simultaneously controlling the working load of the hydraulic control system to increase; and step S2025, when determining that the particle trap regeneration is normal, controlling the timer to stop timing and simultaneously controlling the timer to stop timing. The method can further save the energy consumption of the vehicle by controlling the hydraulic control system within the specified time.

[0055] Specifically, the timer in the vehicle refers to a timer device built in the automobile electronic system, which is used to calculate, record or control time. The timer can obtain a specified time period by timing, and the hydraulic control system can be controlled within the specified time period, and the vehicle can be prevented from failing to regenerate for a long time.

[0056] In order to enable those skilled in the art to more clearly understand the technical solutions of the present application, the implementation process of the control method for the particle trap regeneration of the vehicle will be described in detail below in combination with specific embodiments.

[0057] The present embodiment relates to a specific control method for the particle trap regeneration of a vehicle, which comprises the following steps as shown in Figure 5

[0058] Step S1: judging the working condition, load rate, speed and DPF upstream temperature of the vehicle, when the vehicle is running in the driving regeneration working condition, and the load rate is less than the specified threshold, and the speed meets the relevant requirements, if the DPF upstream temperature cannot reach the regeneration temperature requirement for a long time at this time, it is determined that the current is the low-load driving regeneration operation, and the regeneration temperature is insufficient;

[0059] Step S2: when it is determined that the low-load driving regeneration temperature is low, the timer starts timing, and the vehicle sends a control signal to the hydraulic control system within the specified time;

[0060] Step S3: judging the control signal strength by the difference between the DPF and the specified temperature, increasing the load rate of the engine by controlling the load of the vehicle hydraulic system, thereby increasing the DPF temperature and ensuring the smooth completion of the driving regeneration.

[0061] ​The embodiment of the present application further provides a control device for regeneration of a vehicle particulate trap. It should be noted that the control device for regeneration of a vehicle particulate trap of the embodiment of the present application can be used to execute the control method for regeneration of a vehicle particulate trap provided by the embodiment of the present application. The device is used to realize the above-mentioned embodiment and preferred embodiment, and the description is not repeated. As used below, the term "module" can be a combination of software and / or hardware that realizes a predetermined function. Although the device described in the following embodiment is preferably realized in software, realization in hardware, or a combination of software and hardware is also possible and contemplated.

[0062] The control device for regeneration of a vehicle particulate trap provided by the embodiment of the present application is described below.

[0063] Figure 6 is a schematic diagram of the control device for regeneration of a vehicle particulate trap according to the embodiment of the present application. As shown in Figure 6 , the device comprises:

[0064] The determining unit 10 is configured to, when the vehicle is in a driving regeneration working condition, acquire the load rate of the engine, the speed of the engine and the first temperature of the particulate trap of the vehicle, and determine whether the particulate trap is abnormal in regeneration according to the load rate of the engine, the speed of the engine and the first temperature of the particulate trap of the vehicle, wherein the driving regeneration working condition is a working condition in which the particulate trap is regenerated after the amount of particulate matter of the particulate trap reaches a threshold value during driving of the vehicle, and the load rate is a ratio of the working load of the engine to the maximum load of the engine.

[0065] Specifically, the vehicle can be determined to be in the driving regeneration condition in the following different ways. First, check the prompt information on the instrument panel or screen. Many electric vehicles will have prompt information displayed on the instrument panel when driving regeneration, which can be used to determine whether the vehicle is in the driving regeneration condition. Second, observe whether the brake light is on. When driving regeneration, the brake light is usually on to alert the vehicle behind. Third, listen to the sound of the motor. When driving regeneration, the electric motor of the electric vehicle will produce an unusual roar, similar to the sound of a generator operating. Fourth, check the charging status of the energy storage device. If the battery or super capacitor is showing charging when the vehicle is decelerating, it is in the driving regeneration state. Fifth, observe the load on the gearbox or linear motor. When driving regeneration, the gear teeth in the gearbox or linear motor usually bear a large load. Sixth, test the driving force. When driving regeneration, the vehicle is set to neutral or the clutch is enabled, and there is no driving force output to the wheels. Since the abnormal factors affecting vehicle regeneration can include the above engine load rate, the above engine speed, and the above first temperature of the vehicle's particulate trap, the vehicle can be determined to be abnormal in regeneration according to the above engine load rate, the above engine speed, and the above first temperature of the vehicle's particulate trap.

[0066] The control unit 20 is configured to control the increase in the work load of the hydraulic control system to eliminate the abnormal regeneration of the particulate trap when the abnormal regeneration of the particulate trap occurs.

[0067] Specifically, by controlling the load increase of the vehicle hydraulic system, since the load rate is equal to the ratio of the working load to the maximum load, under the condition that the maximum load is unchanged, the load rate of the engine can be increased by increasing the working load, thereby increasing the temperature of the DPF and ensuring the smooth completion of the on-road regeneration. When the working load of the hydraulic control system increases, the following control methods can be used: increasing the supply capacity of the hydraulic system by replacing the hydraulic pump with a larger capacity to meet the greater working load demand. Increasing the hydraulic oil tank volume: the working load of the hydraulic system increases, and more hydraulic oil is needed to meet its energy demand, so the volume of the hydraulic oil tank can be increased. Increase the diameter of the hydraulic cylinder: by replacing the hydraulic cylinder with a larger diameter, the output force and power of the hydraulic system can be improved to meet the greater working load demand. Adjust the working pressure of the hydraulic system: increasing the working pressure of the hydraulic system can increase its output power to meet the greater working load demand. However, it should be noted that adjusting the working pressure must be within the rated pressure range of the hydraulic system. Increase the number of hydraulic valves: increase the output flow and power of the hydraulic system by increasing the number of hydraulic valves to meet the greater working load demand. It should be noted that when the above control methods are used, the pressure resistance of each component and pipeline of the hydraulic system and other related parameters must be matched to ensure the safe and stable operation of the hydraulic system. At the same time, appropriate selection and adjustment should also be made according to the actual situation to achieve the best working effect. In addition, the vehicle hydraulic system control method can also increase the intake volume of the vehicle under no load in the regeneration mode, and improve the vehicle power in the regeneration mode.

[0068] In this embodiment, the determining unit acquires the load rate of the engine, the speed of the engine and the first temperature of the particulate trap when the vehicle is in the on-road regeneration working condition, and determines whether the particulate trap is abnormal according to the load rate of the engine, the speed of the engine and the first temperature of the particulate trap, wherein the on-road regeneration working condition is a working condition in which the particulate trap regenerates after the amount of particulate matter of the particulate trap reaches a threshold value during vehicle driving, and the load rate is the ratio of the working load of the engine to the maximum load of the engine; the control unit controls the working load of the hydraulic control system to increase when the particulate trap is abnormal, so as to eliminate the abnormal regeneration of the particulate trap. By judging the working condition of the vehicle, the load rate of the engine, the speed of the engine and the temperature of the particulate trap, when it is determined that the working condition of the particulate trap is abnormal, the load of the vehicle hydraulic control system is controlled, and the load rate of the engine is increased, so as to increase the temperature of the particulate trap and ensure the smooth completion of the on-road regeneration. The problem of unsuccessful vehicle regeneration due to low temperature and low load environment of the vehicle in the prior art is solved.

[0069] As an optional solution, as shown in FIG. 6, the hydraulic control system of the vehicle can be connected to the engine oil tank, and the engine oil tank can be connected to the hydraulic control system through a hydraulic pump. Figure 3As shown, the determining unit comprises a first obtaining module, a second obtaining module, a third obtaining module and a first determining module. The first obtaining module is configured to obtain the load rate of the engine and determine whether the load rate of the engine is less than a load rate threshold. The second obtaining module is configured to obtain the rotating speed of the engine and determine whether the rotating speed of the engine is greater than or equal to a first rotating speed threshold and less than or equal to a second rotating speed threshold, wherein the first rotating speed threshold is less than the second rotating speed threshold. The third obtaining module is configured to obtain a first temperature of the particulate filter of the vehicle in a first time period and determine whether the first temperature is less than a first temperature threshold, wherein the start time of the first time period is after the start time of the vehicle in the driving regeneration mode, and the end time of the first time period is before the time of determining the abnormal regeneration of the particulate filter. The first determining module is configured to determine the abnormal regeneration of the particulate filter when the load rate of the engine is less than the load rate threshold, the rotating speed of the engine is greater than or equal to the first rotating speed threshold and less than or equal to the second rotating speed threshold, and the first temperature is less than the first temperature threshold. The device can further accurately determine the abnormal regeneration of the particulate filter.

[0070] Specifically, the rotating speed of the engine can be obtained by directly reading the rotating speed table, reading through the ECU, listening to the sound and judging the approximate rotating speed, and using the rotating speed sensor. The load rate of the engine less than the load rate threshold indicates that the vehicle is in the low load mode. The rotating speed of the engine greater than or equal to the first rotating speed threshold and less than or equal to the second rotating speed threshold also indicates that the vehicle is in the low load mode. The first temperature less than the first temperature threshold indicates that the temperature upstream of the DPF has not reached the regeneration temperature requirement, and thus the abnormal regeneration of the particulate filter can be determined.

[0071] In order to further quickly obtain the load rate of the engine, the first obtaining module comprises an obtaining sub-module and a calculating sub-module. The obtaining sub-module is configured to obtain the current output horsepower of the engine and the rated horsepower of the engine. The calculating sub-module is configured to calculate the ratio of the current output horsepower of the engine to the rated horsepower of the engine to obtain the load rate of the engine. The device can quickly obtain the load rate of the engine by calculating the ratio of the current output horsepower to the rated horsepower of the engine.

[0072] Specifically, the load factor of the engine refers to the proportion of the current load of the engine relative to its maximum possible load. It is mainly calculated according to the current engine output horsepower, speed and torque. There are usually two formulas for calculating the engine load factor, according to the ratio of the current engine output horsepower to the rated horsepower, or, according to the ratio of the current engine output torque to the rated maximum torque. Among them, the current output horsepower and torque can be read in real time through the vehicle torque table or engine detection instrument. In addition, the engine load factor is also related to the emission rate and fuel consumption. When the engine is at low load, i.e. load factor < 30%, fuel consumption is high and emission is low; when the engine is at moderate load, i.e. 30-80%, fuel consumption is low and reasonable, and emission is most moderate; when the engine is at high load, i.e. load factor > 80%, fuel consumption is slightly increased, and emission is increased with the increase of load.

[0073] In order to further realize the precise control of the hydraulic control system, as shown in Figure 4 The above control unit of the present application comprises a second determination module, a third determination module and a fourth determination module. The second determination module is used to determine the target intensity value of the control signal corresponding to the current temperature difference value according to the first mapping relationship between the temperature difference value and the control signal, wherein the temperature difference value is the difference between the second temperature of the particulate trap of the vehicle and the second temperature threshold, the control signal is an electrical signal used to control the hydraulic control system, and the second temperature is the temperature of the particulate trap before the load of the hydraulic control system is increased after determining the abnormal regeneration of the particulate trap. The third determination module is used to determine the target load value of the hydraulic control system corresponding to the target intensity value of the control signal according to the second mapping relationship between the intensity value of the control signal and the working load of the hydraulic control system. The fourth determination module is used to control the working load of the hydraulic control system to increase to the target load value, so that the load factor of the engine is greater than the load factor threshold or the temperature of the particulate trap is greater than the first temperature threshold. This device can determine the target intensity value of the control signal only through the temperature difference value, and can reduce fuel consumption as much as possible under the premise of ensuring the success of driving regeneration.

[0074] Specifically, the temperature of the DPF can be obtained by, for example, reading by ECU, using a DPF-specific temperature sensor, judging the approximate temperature using the DPF regeneration signal, observing the exhaust gas temperature to judge the DPF temperature, and detecting by a DPF-specific temperature detector. Since the DPF is embedded with a temperature sensor, the real-time temperature of the DPF can be read by the engine control unit (ECU). The DPF temperature displayed by the ECU built-in or by reading the software is the most accurate. Another is to install a DPF-specific temperature sensor, which can directly read and display the temperature of the DPF. The DPF needs to reach a certain temperature (which can be 600-700℃) when regenerating, and the current temperature of the DPF can be roughly judged according to the appearance of the regeneration signal. The DPF temperature will eventually affect the temperature of the exhaust gas. By detecting the temperature of the exhaust gas, the approximate temperature of the DPF can also be indirectly reflected. But the accuracy is not high. Using a special DPF temperature gun or a non-contact temperature detector to detect the surface temperature of the DPF is a relatively accurate way to obtain the temperature of the DPF. But it needs professional equipment, and the temperature distribution of the DPF is uneven. In fact, the above-mentioned electrical signal for controlling the above-mentioned hydraulic control system can be a voltage pulse signal.

[0075] The fourth determining module includes a first determining submodule and a first control submodule. The first determining submodule is configured to determine the target number of the hydraulic cylinders corresponding to the target load value according to a third mapping relationship between the working load and the number of the hydraulic cylinders of the hydraulic control system. The first control submodule is configured to control the number of the hydraulic cylinders of the hydraulic control system to increase to the target number. The device can further quickly control the increase of the working voltage of the hydraulic control system.

[0076] Specifically, there is also a certain mapping relationship between the working load of the vehicle engine and the number of hydraulic cylinders of the hydraulic control system. Hydraulic cylinders are an important component of the hydraulic control system, which is used to convert hydraulic energy into mechanical energy to drive mechanical execution work. The number and size of hydraulic cylinders are one of the important factors to be considered when designing a hydraulic system, and are closely related to the working load of the vehicle engine. When the working load of the vehicle engine increases, the hydraulic control system needs more output force and power to meet the work demand. At this time, the number of hydraulic cylinders or the diameter of the hydraulic cylinder can be increased to increase the output force and power of the hydraulic system. Conversely, when the working load of the vehicle engine decreases, the number of hydraulic cylinders of the hydraulic control system can also be appropriately reduced to avoid wasting energy and hydraulic oil. It should be noted that the number and size of hydraulic cylinders are also affected by other factors, such as the working pressure, flow, valve number, etc. of the hydraulic system. Therefore, in actual application, these factors need to be considered comprehensively to select the appropriate number and size of hydraulic cylinders to meet the working load requirements of the vehicle engine and ensure the normal work and safe operation of the hydraulic system. At the same time, the installation and debugging of the hydraulic cylinder also need to be carried out according to the relevant standards and specifications to ensure its performance and reliability.

[0077] An optional solution, the fourth determination module includes a second determination submodule and a second control submodule, wherein the second determination submodule is configured to determine a target value of the oil pump flow of the hydraulic control system according to a fourth mapping relationship between the working load and the oil pump flow of the hydraulic control system; and the second control submodule is configured to control the oil pump flow of the hydraulic control system to increase to the target value. This device can further quickly realize the control of the increase of the working voltage of the hydraulic control system.

[0078] Specifically, there is a certain mapping relationship between the working load of the vehicle engine and the oil pump flow of the hydraulic control system. Generally speaking, the oil pump flow of the hydraulic control system needs to be adjusted according to the working load of the engine to ensure the normal work of the hydraulic system. When the working load of the vehicle engine increases, the hydraulic control system needs more hydraulic oil to meet its energy demand. At this time, the oil pump flow of the hydraulic control system needs to be increased to ensure that the output force and power of the hydraulic cylinder can meet the demand of the working load. Conversely, when the working load of the vehicle engine decreases, the oil pump flow of the hydraulic control system can also be appropriately reduced to avoid wasting energy and hydraulic oil. It should be noted that the size of the oil pump flow of the hydraulic control system is also affected by other factors, such as the working pressure, cylinder diameter, valve number, etc. of the hydraulic system. Therefore, in actual application, these factors need to be considered comprehensively to select the appropriate hydraulic control system and oil pump to meet the working load requirements of the vehicle engine and ensure the normal work and safe operation of the hydraulic system.

[0079] In some embodiments, the control unit further comprises a first control module and a second control module, wherein the first control module is configured to control the timer to start timing and control the hydraulic control system to increase the working load when it is determined that the particulate trap regeneration is abnormal; and the second control module is configured to control the timer to stop timing and control the hydraulic control system to stop increasing the working load when it is determined that the particulate trap regeneration is normal. The device can further save the energy consumption of the vehicle by controlling the hydraulic control system within the specified time.

[0080] Specifically, the timer in the vehicle refers to a timer device built in the electronic system of the vehicle, which is used to calculate, record or control time. The timer can obtain a specified time period by timing, and the hydraulic control system can be controlled within the specified time period, and the vehicle can be prevented from failing to regenerate for a long time.

[0081] The control device for the particulate trap regeneration of the vehicle comprises a processor and a memory, the determination unit and the control unit are stored in the memory as program units, and the corresponding functions are realized by the processor executing the program units stored in the memory. The modules are located in the same processor, or the modules are located in different processors in any combination.

[0082] The processor comprises a core, and the core retrieves the corresponding program unit from the memory. The core can be one or more, and the control of the particulate trap regeneration of the vehicle is realized by adjusting the core parameters.

[0083] The memory can include a non-permanent memory in a computer readable medium, a random access memory (RAM) and / or a non-volatile memory such as a read-only memory (ROM) or a flash memory (flash RAM), and the memory comprises at least one memory chip.

[0084] The embodiment of the present application provides a computer readable storage medium, and the computer readable storage medium comprises a stored program, wherein the device where the computer readable storage medium is located executes the control method for the particulate trap regeneration of the vehicle when the program runs.

[0085] Specifically, the control method for the particulate trap regeneration of the vehicle comprises:

[0086] Step S201, in the case that the vehicle is in a driving regeneration working condition, the load rate of the engine, the speed of the engine and the first temperature of the particulate trap of the vehicle are obtained, and whether the particulate trap is abnormal in regeneration is determined according to the load rate of the engine, the speed of the engine and the first temperature of the particulate trap of the vehicle, wherein the driving regeneration working condition is a working condition in which the particulate trap is regenerated after the amount of particulate matter of the particulate trap reaches a threshold value during driving of the vehicle, and the load rate is the ratio of the working load of the engine to the maximum load of the engine.

[0087] Specifically, whether the vehicle is in the driving regeneration working condition can be determined in the following different ways. First, check the prompt information on the instrument panel or screen. Many electric vehicles will have prompt information displayed on the instrument panel during driving regeneration, which can be used to determine whether the vehicle is in the driving regeneration working condition. Second, observe whether the brake light is on. During driving regeneration, the brake light is usually on to alert the vehicle behind. Third, listen to the sound of the motor. During driving regeneration, the motor of the electric vehicle will produce an unusual roar, similar to the sound of a generator operating. Fourth, check the charging status of the energy storage device. If the battery or super capacitor shows that it is charging when the vehicle is decelerating, it is in the driving regeneration state. Fifth, observe the load on the gearbox or linear motor. During driving regeneration, the gear teeth in the gearbox or the linear motor usually bear a large load. Sixth, test the driving force. During driving regeneration, the vehicle is set to neutral or the clutch is enabled, and there is no driving force output to the wheels. Since the influencing factors of the abnormal regeneration of the vehicle can include the load rate of the engine, the speed of the engine and the first temperature of the particulate trap of the vehicle, whether the vehicle is abnormal in regeneration can be determined according to the load rate of the engine, the speed of the engine and the first temperature of the particulate trap of the vehicle.

[0088] Step S202, in the case that the particulate trap is abnormal in regeneration, the working load of the hydraulic control system is increased to eliminate the abnormal regeneration of the particulate trap.

[0089] Specifically, by controlling the load increase of the vehicle hydraulic system, since the load rate is equal to the ratio of the working load to the maximum load, the load rate of the engine can be increased by increasing the working load under the condition that the maximum load is unchanged, thereby increasing the DPF temperature and ensuring the smooth completion of the driving regeneration. When the working load of the hydraulic control system increases, the following control methods can be used: increasing the supply capacity of the hydraulic system by replacing the hydraulic pump with a larger capacity to meet the greater working load demand. Increasing the hydraulic oil tank volume, the working load of the hydraulic system increases, and more hydraulic oil is needed to meet its energy demand, so the volume of the hydraulic oil tank can be increased. Increase the diameter of the hydraulic cylinder: by replacing the hydraulic cylinder with a larger diameter, the output force and power of the hydraulic system can be improved to meet the greater working load demand. Adjusting the working pressure of the hydraulic system, increasing the working pressure of the hydraulic system can improve its output power, thereby meeting the greater working load demand. However, it should be noted that adjusting the working pressure must be within the rated pressure range of the hydraulic system. Increase the number of hydraulic valves: increase the output flow and power of the hydraulic system by increasing the number of hydraulic valves to meet the greater working load demand. It should be noted that when the above control methods are used, the pressure resistance of each component and pipeline of the hydraulic system and other related parameters must be matched to ensure the safe and stable operation of the hydraulic system. At the same time, appropriate selection and adjustment should also be made according to the actual situation to achieve the best working effect. In addition, the vehicle hydraulic system control method can also increase the intake volume of the vehicle under no load in the regeneration mode, and improve the vehicle power in the regeneration mode.

[0090] The embodiment of the present application provides a processor used for running a program, wherein the processor is used for executing the control method of the vehicle particulate trap regeneration when the program is running.

[0091] Specifically, the control method of the vehicle particulate trap regeneration comprises:

[0092] In step S201, when the vehicle is in a driving regeneration working condition, the load rate of the engine, the speed of the engine and the first temperature of the particulate trap of the vehicle are obtained, and whether the particulate trap is abnormal is determined according to the load rate of the engine, the speed of the engine and the first temperature of the particulate trap of the vehicle, wherein the driving regeneration working condition is a working condition in which the particulate trap is regenerated after the amount of particulate matter of the particulate trap reaches a threshold value during driving of the vehicle, and the load rate is the ratio of the working load of the engine to the maximum load of the engine.

[0093] Specifically, whether the vehicle is in the driving regeneration condition can be determined in the following different ways. First, check the prompt information on the instrument panel or screen. Many electric vehicles will have prompt information displayed on the instrument panel when driving regeneration, which can determine whether the vehicle is in the driving regeneration condition. Second, observe whether the brake light is on. When driving regeneration, the brake light will usually be on to alert the vehicle behind. Third, listen to the sound of the motor. When driving regeneration, the electric motor of the electric vehicle will produce an unusual roar, similar to the sound of a generator operating. Fourth, check the charging status of the energy storage device. If the battery or super capacitor shows that it is charging when the vehicle is decelerating, it is in the driving regeneration state. Fifth, observe the load on the gearbox or linear motor. When driving regeneration, the variable gear in the gearbox or linear motor usually bears a large load. Sixth, test the driving force. When driving regeneration, the vehicle is set to neutral or the clutch is enabled, and there is no driving force output to the wheels. Since the abnormal factors of vehicle regeneration can include the above engine load rate, the above engine speed, and the first temperature of the above vehicle particulate trap, the vehicle can be determined to be abnormal in regeneration according to the above engine load rate, the above engine speed, and the first temperature of the above vehicle particulate trap.

[0094] Step S202, in the case of the above particulate trap regeneration abnormality, the above working load of the above hydraulic control system is increased to eliminate the above particulate trap regeneration abnormality.

[0095] Specifically, by controlling the load increase of the vehicle hydraulic system, since the load rate is equal to the ratio of the working load to the maximum load, the load rate of the engine can be increased by increasing the working load under the condition that the maximum load is unchanged, thereby increasing the DPF temperature and ensuring the smooth completion of the driving regeneration. When the working load of the hydraulic control system increases, the following control methods can be used: increasing the supply capacity of the hydraulic system by replacing the hydraulic pump with a larger capacity to meet the greater working load demand. Increase the volume of the hydraulic oil tank. The working load of the hydraulic system increases, and more hydraulic oil is needed to meet its energy demand, so the volume of the hydraulic oil tank can be increased. Increase the diameter of the hydraulic cylinder: by replacing the hydraulic cylinder with a larger diameter, the output force and power of the hydraulic system can be increased to meet the greater working load demand. Adjusting the working pressure of the hydraulic system, increasing the working pressure of the hydraulic system can increase its output power, thereby meeting the greater working load demand. However, it should be noted that adjusting the working pressure must be within the rated pressure range of the hydraulic system. Increase the number of hydraulic valves: increase the output flow and power of the hydraulic system by increasing the number of hydraulic valves to meet the greater working load demand. It should be noted that when the above control methods are used, the pressure resistance of each component and pipeline of the hydraulic system and other related parameters must be matched to ensure the safe and stable operation of the hydraulic system. At the same time, appropriate selection and adjustment should also be made according to the actual situation to achieve the best working effect. In addition, the vehicle hydraulic system control method can also increase the intake volume of the vehicle under the no-load regeneration mode, and improve the vehicle power performance in the regeneration mode.

[0096] The embodiment of the present application provides a device, which comprises a processor, a memory and a program stored on the memory and executable on the processor, and at least the following steps are implemented when the processor executes the program:

[0097] In step S201, the load rate of the engine, the speed of the engine and the first temperature of the particulate trap of the vehicle are obtained when the vehicle is in a driving regeneration working condition, and whether the particulate trap is abnormal is determined according to the load rate of the engine, the speed of the engine and the first temperature of the particulate trap of the vehicle, wherein the driving regeneration working condition is a working condition in which the particulate trap regenerates after the amount of particulate matter of the particulate trap reaches a threshold value during driving of the vehicle, and the load rate is the ratio of the working load of the engine to the maximum load of the engine.

[0098] In step S202, the working load of the hydraulic control system is controlled to increase when the particulate trap is abnormal, so as to eliminate the abnormal regeneration of the particulate trap.

[0099] The device herein can be a server, a PC, a PAD, a mobile phone, etc.

[0100] The application also provides a computer program product adapted to execute a program that initializes at least the following method steps when executed on a data processing device:

[0101] Step S201, in the case that the vehicle is in a driving regeneration working condition, obtaining the load rate of the engine, the rotating speed of the engine and the first temperature of the particulate trap of the vehicle, and determining whether the particulate trap is abnormal in regeneration according to the load rate of the engine, the rotating speed of the engine and the first temperature of the particulate trap of the vehicle, wherein the driving regeneration working condition is a working condition in which the particulate trap is regenerated after the amount of particulate of the particulate trap reaches a threshold value during the driving of the vehicle, and the load rate is the ratio of the working load of the engine to the maximum load of the engine;

[0102] Step S202, in the case that the particulate trap is abnormal in regeneration, increasing the working load of the hydraulic control system to eliminate the abnormality in regeneration of the particulate trap.

[0103] Obviously, those skilled in the art should understand that the modules or steps of the present application described above can be realized by general computing devices, which can be centralized on a single computing device or distributed on a network composed of multiple computing devices, and can be realized by program codes executable by the computing devices, so that they can be stored in storage devices and executed by the computing devices, and in some cases, the steps shown or described can be executed in different sequences, or they can be manufactured into individual integrated circuit modules or a single integrated circuit module. Therefore, the present application is not limited to any specific combination of hardware and software.

[0104] Those skilled in the art should understand that the embodiments of the present application can be provided as a method, a system or a computer program product. Therefore, the present application can be in the form of a complete hardware embodiment, a complete software embodiment or an embodiment combining software and hardware aspects. Moreover, the present application can be in the form of a computer program product implemented on one or more computer usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) containing computer usable program codes.

[0105] The computer program instructions can also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer-implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart block or blocks. Figure 1 one or more flow or blocks Figure 1 means for functionally implementing the steps listed in the flowchart block or blocks.

[0106] These computer program instructions can also be stored in a computer readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer readable memory produce an article of manufacture including instructions which implement the function specified in the flowchart block or blocks. Figure 1 one or more flow or blocks Figure 1 means for functionally implementing the steps listed in the flowchart block or blocks.

[0107] The computer program instructions can also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer-implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart block or blocks. Figure 1 one or more flow or blocks Figure 1 means for functionally implementing the steps listed in the flowchart block or blocks.

[0108] In one typical configuration, the computing device includes one or more processors (CPUs), input / output interfaces, network interfaces, and memory.

[0109] The memory can include non-persistent memory and / or persistent memory, such as flash memory, read-only memory (ROM), and / or volatile / non-volatile random access memory (RAM), among others. The memory is an example of computer readable media.

[0110] Computer-readable media includes permanent and non-permanent, movable and non-movable media that can be implemented by any method or technology to store information. The information can be computer-readable instructions, data structures, program modules or other data. Examples of computer storage media include, but are not limited to, phase-change memory (PRAM), static random access memory (SRAM), dynamic random access memory (DRAM), other types of random access memory (RAM), read-only memory (ROM), electrically erasable programmable read-only memory (EEPROM), flash memory or other memory technologies, compact disc read-only memory (CD-ROM), digital versatile disc (DVD) or other optical storage, magnetic cassette, magnetic tape, magnetic disk storage or other magnetic storage devices, or any other non-transmission medium that can be used to store information accessible by a computing device. According to the definition herein, computer-readable media does not include transitory media such as modulated data signals and carriers.

[0111] It should also be noted that the terms "comprising", "including", or any other variant thereof are intended to cover non-exclusive inclusion, so that processes, methods, articles or devices including a series of elements not only include those elements, but also include other elements not explicitly listed, or inherent to such processes, methods, articles or devices. Without more limitations, the element defined by the statement "comprising a" does not exclude the presence of other identical elements in the process, method, article or device including the element.

[0112] From the above description, it can be seen that the above-mentioned embodiments of the present application achieve the following technical effects:

[0113] 1) The control method for vehicle particulate trap regeneration of the application, first, in the case that the vehicle is in the driving regeneration working condition, the load rate of the engine, the speed of the engine and the first temperature of the vehicle particulate trap are obtained, and whether the particulate trap is abnormal in regeneration is determined according to the load rate of the engine, the speed of the engine and the first temperature of the vehicle particulate trap, wherein the driving regeneration working condition is the working condition that the particulate trap is regenerated after the number of particulate matters of the particulate trap reaches the threshold value in the process of vehicle driving, and the load rate is the ratio of the working load of the engine to the maximum load of the engine; and then in the case that the particulate trap is abnormal in regeneration, the working load of the hydraulic control system is controlled to increase, so as to eliminate the abnormality in the regeneration of the particulate trap. By judging the working condition of the vehicle, the load rate of the engine, the speed of the engine and the temperature of the particulate trap, when the working condition that the particulate trap is abnormal in regeneration is determined, the load of the hydraulic control system of the vehicle is controlled, and then the load rate of the engine is increased, so as to increase the temperature of the particulate trap and ensure the smooth completion of the driving regeneration. The problem that the vehicle regeneration is unsuccessful due to the low-temperature and low-load environment of the vehicle in the prior art is solved.

[0114] 2) The control device for vehicle particulate trap regeneration of the application, the determination unit obtains the load rate of the engine, the speed of the engine and the first temperature of the vehicle particulate trap in the case that the vehicle is in the driving regeneration working condition, and determines whether the particulate trap is abnormal in regeneration according to the load rate of the engine, the speed of the engine and the first temperature of the vehicle particulate trap, wherein the driving regeneration working condition is the working condition that the particulate trap is regenerated after the number of particulate matters of the particulate trap reaches the threshold value in the process of vehicle driving, and the load rate is the ratio of the working load of the engine to the maximum load of the engine; and the control unit controls the working load of the hydraulic control system to increase in the case that the particulate trap is abnormal in regeneration, so as to eliminate the abnormality in the regeneration of the particulate trap. By judging the working condition of the vehicle, the load rate of the engine, the speed of the engine and the temperature of the particulate trap, when the working condition that the particulate trap is abnormal in regeneration is determined, the load of the hydraulic control system of the vehicle is controlled, and then the load rate of the engine is increased, so as to increase the temperature of the particulate trap and ensure the smooth completion of the driving regeneration. The problem that the vehicle regeneration is unsuccessful due to the low-temperature and low-load environment of the vehicle in the prior art is solved.

[0115] The above only describes the preferred embodiments of the application and is not used to limit the application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the application shall be included in the protection scope of the application.

Claims

1. A control method of regeneration of a vehicle particulate trap, characterized by, The vehicle comprises an engine and a hydraulic control system, and the method comprises: In a case where the vehicle is in a driving regeneration working condition, obtaining a load rate of the engine, a rotating speed of the engine, and a first temperature of a particulate filter of the vehicle, and determining whether the particulate filter is abnormal in regeneration according to the load rate of the engine, the rotating speed of the engine, and the first temperature of the particulate filter of the vehicle, wherein the driving regeneration working condition is a working condition in which the particulate filter is regenerated after the amount of particulate matters of the particulate filter reaches a threshold value during driving of the vehicle, and the load rate is a ratio of the working load of the engine to the maximum load of the engine; In a case where the particulate filter is abnormal in regeneration, increasing the working load of the hydraulic control system to eliminate the abnormality in regeneration of the particulate filter, The method for determining whether the particulate filter is abnormal in regeneration according to the load rate of the engine, the rotating speed of the engine, and the first temperature of the particulate filter of the vehicle comprises: Obtaining the load rate of the engine, and determining whether the load rate of the engine is less than a load rate threshold value; Obtaining the rotating speed of the engine, and determining whether the rotating speed of the engine is greater than or equal to a first rotating speed threshold value and less than or equal to a second rotating speed threshold value, wherein the first rotating speed threshold value is less than the second rotating speed threshold value; Obtaining a first temperature of the particulate filter of the vehicle in a first time period, and determining whether the first temperature is less than a first temperature threshold value, wherein the start time of the first time period is after the start time of the vehicle in the driving regeneration working condition, and the end time of the first time period is before the time of determining that the particulate filter is abnormal in regeneration; In a case where the load rate of the engine is less than the load rate threshold value, the rotating speed of the engine is greater than or equal to the first rotating speed threshold value and less than or equal to the second rotating speed threshold value, and the first temperature is less than the first temperature threshold value, determining that the particulate filter is abnormal in regeneration.

2. The method of claim 1, wherein, The method for obtaining the load rate of the engine comprises: Obtaining the current output horsepower of the engine and the rated horsepower of the engine; Calculating the ratio of the current output horsepower of the engine and the rated horsepower of the engine to obtain the load rate of the engine.

3. The method of claim 1, wherein, The method for controlling the working load of the hydraulic control system to increase to eliminate the abnormality in regeneration of the particulate filter comprises: According to a first mapping relationship between the temperature difference value and the control signal, determining the target intensity value of the control signal corresponding to the current temperature difference value, wherein the temperature difference value is the difference between the second temperature of the particulate filter of the vehicle and a second temperature threshold value, the control signal is an electric signal for controlling the hydraulic control system, and the second temperature is the temperature of the particulate filter after determining that the particulate filter is abnormal in regeneration and before controlling the load of the hydraulic control system to increase; According to a second mapping relationship between the intensity value of the control signal and the working load of the hydraulic control system, determining the target load value of the hydraulic control system corresponding to the target intensity value of the control signal. controlling the working load of the hydraulic control system to increase to the target load value comprises:

4. The method of claim 3, wherein, controlling the working load of the hydraulic control system to increase to the target load value comprises: determining a target number of the hydraulic cylinders corresponding to the target load value according to a third mapping relationship between the working load of the hydraulic control system and a number of the hydraulic cylinders of the hydraulic control system; controlling the number of the hydraulic cylinders of the hydraulic control system to increase to the target number.

5. The method of claim 3, wherein, controlling the working load of the hydraulic control system to increase to the target load value further comprises: determining a target value of the pump flow of the hydraulic control system according to a fourth mapping relationship between the working load of the hydraulic control system and the pump flow of the hydraulic control system; controlling the pump flow of the hydraulic control system to increase to the target value.

6. The method according to any one of claims 1 to 5, characterized in that, The vehicle further comprises a timer, and in the case of the abnormal regeneration of the particulate trap, the working load of the hydraulic control system is controlled to increase to eliminate the abnormal regeneration of the particulate trap, comprising: controlling the timer to start timing at the moment when the abnormal regeneration of the particulate trap is determined, and simultaneously controlling the working load of the hydraulic control system to increase; controlling the timer to stop timing at the moment when the abnormal regeneration of the particulate trap is eliminated.

7. A control device for regeneration of a vehicle particulate trap, characterized by The vehicle comprises an engine and a hydraulic control system, wherein the device comprises: a determination unit configured to, in the case that the vehicle is in a driving regeneration working condition, acquire a load rate of the engine, a speed of the engine, and a first temperature of a particulate trap of the vehicle, and determine whether the particulate trap is abnormal in regeneration according to the load rate of the engine, the speed of the engine, and the first temperature of the particulate trap of the vehicle, wherein the driving regeneration working condition is a working condition in which the particulate trap is regenerated after the amount of particulate matter of the particulate trap reaches a threshold value during driving of the vehicle, and the load rate is a ratio of a working load of the engine to a maximum load of the engine; a control unit configured to, in the case that the particulate trap is abnormal in regeneration, control the working load of the hydraulic control system to increase to eliminate the abnormal regeneration of the particulate trap. The determining unit comprises a first obtaining module, a second obtaining module, a third obtaining module and a first determining module. The first obtaining module is configured to obtain the load rate of the engine and determine whether the load rate of the engine is less than a load rate threshold. The second obtaining module is configured to obtain the rotating speed of the engine and determine whether the rotating speed of the engine is greater than or equal to a first rotating speed threshold and less than or equal to a second rotating speed threshold, wherein the first rotating speed threshold is less than the second rotating speed threshold. The third obtaining module is configured to obtain a first temperature of the particle trap of the vehicle in a first time period and determine whether the first temperature is less than a first temperature threshold, wherein the start time of the first time period is after the start time of the vehicle in the driving regeneration mode, and the end time of the first time period is before the time of determining the particle trap regeneration abnormality. The first determining module is configured to determine the particle trap regeneration abnormality when the load rate of the engine is less than the load rate threshold, the rotating speed of the engine is greater than or equal to the first rotating speed threshold and less than or equal to the second rotating speed threshold, and the first temperature is less than the first temperature threshold.

8. A computer-readable storage medium, characterized in that, The computer readable storage medium comprises a stored program, wherein the program controls the device where the computer readable storage medium is located to execute the method of any one of claims 1 to 6 when the program is running. 9.An electronic device comprising a memory and a processor, the electronic device characterized by, The memory stores a computer program, and the processor is configured to execute the method of any one of claims 1 to 6 by using the computer program.

Images