Control method and system for DPF operation regeneration of special vehicle

Abstract

The invention discloses a control method and system for DPF operation regeneration of a special vehicle, and the control method comprises the steps: obtaining a vehicle state parameter through an ECU, and judging whether the vehicle state parameter meets a DPF regeneration triggering request or not; and if the DPF regeneration triggering request is met, the running state of the vehicle is judged, and an idling state or an operation state is generated. And if the running state of the vehicle is the operation state, the ECU reminds a driver whether to enter a regeneration mode or not. And if the driver confirms to enter the regeneration mode, the engine enters the DPF regeneration mode to execute operation. And after DPF regeneration succeeds or fails, the engine quits the DPF regeneration mode. Therefore, according to the control method for DPF operation regeneration of the special vehicle, by adding the whole vehicle operation state parameter judgment conditions, DPF regeneration can be completed without stopping operation when the special vehicle continuously operates in the static state.

Description

Technical Field

[0001] The embodiments of the present invention relate to the technical field of diesel engine DPF operation regeneration, and in particular to a control method and system for special vehicle DPF operation regeneration. Background Art

[0002] With the implementation of the National VI emission standards in the automotive industry, diesel engines generally adopt the technical route of adding aftertreatment. As an important component of the aftertreatment, DPF (diesel soot particulate filter) can effectively capture soot particles in diesel engine exhaust and reduce soot particle (PM) emissions, so that the engine soot particles (PM) meet the limit of the National VI emission standards. As the diesel engine runs longer, the DPF captures more soot particles, and the exhaust back pressure increases. When a certain limit is reached, the engine's power and fuel economy will deteriorate. At this time, the DPF needs to be actively regenerated to burn the soot particles captured in the DPF.

[0003] The current control method DPF regeneration adopts the strategies of parking regeneration and driving regeneration. Parking regeneration requires that the vehicle is parked and cannot perform any other operations. By increasing the engine speed to a pre-calibrated speed, the exhaust temperature of the engine after-processor is increased, and the parking regeneration is completed after a certain period of time; driving regeneration is mainly used when the vehicle is driving normally, and the exhaust temperature of the engine after-processor is increased by thermal management control to complete the regeneration.

[0004] The current control strategy cannot meet the DPF regeneration needs of special-purpose vehicles such as cranes, truck-mounted cranes, mixer trucks, etc. These types of vehicles operate in a stationary state for a long time. When the DPF regeneration demand is triggered, the driving regeneration trigger fails due to the stationary operation, and only parking regeneration can be carried out. However, special-purpose vehicles often cannot interrupt the operation to carry out parking regeneration, and the parking regeneration will take about 30 minutes. The process cannot be carried out, so it does not meet the needs of actual application scenarios. In addition, since operations cannot be carried out during parking regeneration, the fuel consumption of the whole vehicle is poor and the operating efficiency is low. Summary of the invention

[0005] The embodiment of the present invention provides a control method and system for DPF operation regeneration of a special vehicle, which realizes that when the special vehicle is continuously operating in a stationary state, DPF regeneration can be completed without stopping the operation by adding a whole vehicle operation status parameter judgment condition.

[0006] To achieve the above objectives, in a first aspect, the present invention provides a control method for regeneration of a DPF operation of a special vehicle, comprising:

[0007] Step S100, the ECU obtains vehicle state parameters and determines whether the vehicle state parameters meet the requirement of triggering DPF regeneration;

[0008] Step S200, if the DPF regeneration request is satisfied, the vehicle operation state is determined to generate an idle state or an operating state;

[0009] Step S300, if the vehicle running state is the working state, the ECU reminds the driver whether to enter the regeneration mode;

[0010] Step S400, if the driver confirms to enter the regeneration mode, the engine enters the DPF regeneration mode to perform the operation;

[0011] Step S500: After the DPF regeneration succeeds or fails, the engine exits the DPF regeneration mode.

[0012] In one embodiment of the present invention, the step S100 includes:

[0013] Step S101, the ECU obtains the current DPF carbon load, the engine running mileage, running time and fuel consumption information since the last successful regeneration, and obtains the vehicle status parameters through the sensor;

[0014] Step S102, comparing the vehicle state parameter with a preset electronic control parameter value;

[0015] Step S103: If any parameter of the vehicle state parameter is greater than the preset electronic control parameter, a DPF regeneration request is triggered.

[0016] In one embodiment of the present invention, step S200 includes:

[0017] Step S201, if the DPF regeneration request is triggered, the ECU determines whether the vehicle is in a driving state through the vehicle speed signal;

[0018] Step S202, if the vehicle is in driving state, the engine enters DPF regeneration mode to perform operation;

[0019] Step S203, if the vehicle is not in driving state, the ECU determines whether the vehicle is in operating state or idling state through the power switch state of the operating room, the PTO signal state, the gear signal, the throttle signal, the remote throttle signal, the engine speed change rate and the injection amount change rate.

[0020] In a second aspect, the present invention provides a control system for DPF operation regeneration of a special vehicle, comprising: a judgment module, a generation module, a reminder module, an entry module and an exit module. The judgment module is used for the ECU to obtain vehicle status parameters and judge whether the vehicle status parameters meet the DPF regeneration request. The generation module is used to judge the vehicle operation state and generate an idle state or an operation state if the DPF regeneration request is triggered. The reminder module is used for the ECU to remind the driver whether to enter the regeneration mode if the vehicle operation state is the operation state. The entry module is used for the engine to enter the DPF regeneration mode to perform the operation if the driver confirms to enter the regeneration mode. The exit module is used for the engine to exit the DPF regeneration mode after the DPF regeneration succeeds or fails.

[0021] In one embodiment of the present invention, the judgment module includes: a obtaining unit, a comparing unit and a triggering unit. The obtaining unit is used for the ECU to obtain the current DPF carbon load, the engine running mileage, running time and fuel consumption information from the last successful regeneration to the present through sensors to obtain the vehicle state parameters. The comparing unit is used to compare the vehicle state parameters with the preset electronic control parameter values. And the triggering unit is used to trigger the DPF regeneration request if any parameter of the vehicle state parameters is greater than the preset electronic control parameter.

[0022] In one embodiment of the present invention, the generation module includes: a first judgment unit, an entry unit, and a second judgment unit. The first judgment unit is used for the ECU to judge whether the vehicle is in a driving state through a vehicle speed signal if the DPF regeneration request is satisfied. The entry unit is used for the engine to enter the DPF regeneration mode to perform the operation if the vehicle is in a driving state. The second judgment unit is used for the ECU to judge whether the vehicle's operating state is in an operating state or an idle state through the power-on switch state of the operating room, the PTO signal state, the gear signal, the throttle signal, the remote throttle signal, the engine speed change rate, and the injection amount change rate if the vehicle is not in a driving state.

[0023] In a third aspect, the present invention provides an electronic device, comprising:

[0024] at least one processor; and

[0025] a memory communicatively coupled to the at least one processor;

[0026] The memory stores instructions executable by the at least one processor, and the instructions are executed by the at least one processor so that the at least one processor can execute the control method for regeneration of the DPF operation of a special vehicle as described above.

[0027] In a fourth aspect, the present invention provides a computer-readable storage medium, including a computer program and instructions, which, when executed on a computer, enables the computer to execute the control method for regeneration of the DPF operation of a special vehicle as described above.

[0028] Compared with the prior art, the control and system for DPF operation regeneration of a special vehicle according to the present invention has the following beneficial effects:

[0029] 1. Improved operation continuity and efficiency: This invention increases the judgment conditions for the operating status parameters of the entire vehicle, thereby achieving DPF regeneration without stopping the operation when the special-purpose vehicle is operating continuously in a stationary state; this avoids the long-term interruption of operation caused by traditional parking regeneration, and significantly improves the operation continuity and overall efficiency of the special-purpose vehicle.

[0030] 2. Accurately judge the vehicle status: By integrating multiple parameters (such as the power switch status of the operating room, the PTO signal status, the gear signal, the throttle signal, the remote throttle signal, the engine speed change rate and the injection amount change rate), it can accurately judge whether the vehicle is in operation or idling state; this precise judgment helps to trigger DPF regeneration at the right time to avoid unnecessary interference.

[0031] 3. Enhanced safety and stability: The system has added a DPF operation regeneration control mode instrument prompt confirmation function, which allows the driver to determine whether to enter the regeneration mode based on the operating environment and cargo conditions; especially when hoisting precision instruments or fragile items, the driver can choose to prohibit entering the operation regeneration mode to ensure that the operating speed is stable and does not shake, thereby eliminating safety hazards.

[0032] 4. Optimized regeneration strategy: Provides strategies for DPF regeneration in driving and operating states, which helps to effectively regenerate DPF under different working conditions, reduce the accumulation of carbon soot particles, and maintain good engine performance.

[0033] 5. Improved user experience: Through intelligent control methods and systems, the driver's intervention and waiting time are reduced, and the convenience and comfort of vehicle use are improved; at the same time, through precise control and prompts, the driver's sense of control over the vehicle status is enhanced.

[0034] 6. Strong adaptability: The invention is applicable to various vehicles with special purposes, such as cranes, truck-mounted cranes, mixer trucks, etc. These vehicles operate in a stationary state for a long time and have a more urgent need for DPF regeneration; the control method and system of the invention can well meet the special needs of these vehicles. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1It is a flow chart of a control method for DPF operation regeneration of a special vehicle in the first embodiment of the present invention;

[0036] Figure 2 It is a structural schematic diagram of a control system for DPF operation regeneration of a special vehicle in the second embodiment of the present invention;

[0037] Figure 3 It is a schematic diagram of the structure of an electronic device in Embodiment 3 of the present invention;

[0038] Figure 4 is a logical flow diagram of triggering a DPF regeneration request in a specific embodiment of the present invention;

[0039] Figure 5 It is a logical flow diagram of generating an idle state or an operating state in a specific embodiment of the present invention;

[0040] Figure 6 It is a logical flow chart of DPF regeneration success or failure in a specific embodiment of the present invention. DETAILED DESCRIPTION

[0041] The embodiments of the present invention are further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are only used to explain the embodiments of the present invention, rather than to limit the embodiments of the present invention. It is also necessary to explain that, for ease of description, only parts related to the embodiments of the present invention are shown in the accompanying drawings, rather than all structures.

[0042] To facilitate understanding, the main implementation concepts of the embodiments of the present invention are first briefly described.

[0043] With the increasing global awareness of environmental protection and increasingly stringent emission regulations, the automotive industry, especially the diesel engine field, is facing tremendous pressure to reduce emissions. The implementation of the National VI emission standard marks that my country's automobile emission control has entered a more stringent stage. In order to meet this standard, diesel engines generally adopt the technical route of adding after-treatment, among which DPF (diesel soot particulate filter) as an important component of the after-processor plays a vital role.

[0044] Through its special filtering structure, DPF can effectively capture soot particles in diesel engine exhaust, thereby significantly reducing the emission of soot particles (PM). However, as the diesel engine runs longer, the soot particles accumulated inside the DPF will gradually increase, resulting in increased exhaust back pressure. When the back pressure reaches a certain limit, the engine's power and fuel economy will be seriously affected. At this time, the DPF needs to be actively regenerated to burn the captured soot particles and restore its filtering performance.

[0045] In traditional control methods, DPF regeneration mainly adopts two strategies: parking regeneration and driving regeneration. Parking regeneration needs to be performed under the premise that the vehicle is parked and no other operations can be performed. The regeneration process is completed by increasing the engine speed to a pre-calibrated speed and increasing the exhaust temperature of the engine after-processor. Driving regeneration is mainly used when the vehicle is driving normally, and the exhaust temperature is increased through thermal management control to achieve regeneration.

[0046] However, these traditional control strategies are not applicable to special-purpose vehicles such as cranes, truck-mounted cranes, and mixer trucks. These vehicles operate in a stationary state for a long time. When the DPF regeneration demand is triggered, the driving regeneration cannot be successfully triggered because the vehicle is in a stationary state, and only parking regeneration can be performed. However, the parking regeneration process takes about 30 minutes, during which the vehicle cannot perform any operations. This not only seriously affects the operating efficiency and continuity, but also increases the fuel consumption of the entire vehicle due to the inability to operate during parking regeneration. Therefore, the traditional DPF regeneration control strategy cannot meet the actual application scenario requirements of this type of special-purpose vehicle.

[0047] The inventors have found the above-mentioned defects in the prior art and have provided a control method and system for regeneration of DPF operation of special-purpose vehicles. Through intelligent and refined design, the method and system not only solve the problem of DPF regeneration of special-purpose vehicles in a stationary operation state, but also improve the continuity and efficiency of the operation, enhance safety and stability, optimize the regeneration strategy, and enhance the user experience. The method and system have strong adaptability and can meet the special needs of various special-purpose vehicles such as cranes, truck cranes, and mixer trucks, and have significant technical advantages and practical application value.

[0048] Embodiment 1

[0049] Figure 1 FIG. 1 is a flow chart of a control method for regenerating a DPF of a special vehicle in Embodiment 1 of the present invention. Figure 1 As shown, embodiment 1 provides a control method for regeneration of DPF operation of a special vehicle, including:

[0050] Step S100, the ECU obtains vehicle state parameters and determines whether the vehicle state parameters meet the requirement of triggering DPF regeneration;

[0051] Specifically, the ECU (electronic control unit) is responsible for obtaining the vehicle's status parameters, which include but are not limited to the current DPF (diesel soot particulate filter) carbon load, engine mileage since the last successful regeneration, operating time, and fuel consumption. After obtaining these parameters, the ECU will compare them with the preset electronic control parameter values ​​to determine whether the vehicle status parameters have reached the conditions for triggering a DPF regeneration request. If any parameter exceeds the preset value, such as the DPF carbon load is too high, the ECU will trigger a DPF regeneration request to ensure that engine performance and emissions meet standards. This step is the key to the control method because it determines when DPF regeneration is needed to maintain efficient engine operation and reduce environmental pollution.

[0052] Step S200, if the DPF regeneration request is satisfied, the vehicle operation state is determined to generate an idle state or an operating state;

[0053] Specifically, when the ECU detects that the vehicle state parameters meet the requirements for triggering a DPF regeneration request, this step further determines the specific operating state of the vehicle, that is, whether the vehicle is in an idling state or an operating state, thereby providing a basis for whether to enter the regeneration mode and how to perform regeneration. This step ensures that the special vehicle can perform DPF regeneration when it is stationary and operating, avoiding the interruption of operations caused by traditional parking regeneration and improving operation continuity and efficiency.

[0054] Step S300, if the vehicle running state is the working state, the ECU reminds the driver whether to enter the regeneration mode;

[0055] Specifically, this step is a manifestation of the intelligence of the control system, which allows the driver to decide whether to allow the vehicle to enter the DPF regeneration mode based on the current operating environment and cargo conditions. Through this reminder, the driver can choose the right time to regenerate the DPF while ensuring the safety and stability of the operation, thereby avoiding operation interruptions or potential safety hazards caused by the regeneration process. This design improves the flexibility and user-friendliness of the system, ensuring the efficient and continuous operation of special vehicles during the operation process.

[0056] Step S400, if the driver confirms to enter the regeneration mode, the engine enters the DPF regeneration mode to perform the operation;

[0057] Specifically, if the driver confirms that the vehicle is allowed to enter the DPF regeneration mode, the engine will start the DPF regeneration program and perform the regeneration process while the vehicle continues to operate. This step enables the special vehicle to complete the DPF regeneration function without interrupting the operation in a stationary operating state, improving the continuity and efficiency of the operation.

[0058] Step S500, after the DPF regeneration succeeds or fails, the engine exits the DPF regeneration mode;

[0059] Specifically, regardless of whether the DPF regeneration process is successful or failed, the engine will exit the DPF regeneration mode. This is an important part of the control process, ensuring that the engine can return to normal operating state or idle state after the regeneration operation is completed. If the regeneration is successful, the engine exits the regeneration mode and continues to run at the set operating speed or enters the idle state; if the regeneration fails, it may be due to reasons such as the operation being stopped or the exhaust temperature being too low, the engine will also exit the regeneration mode and wait for the next suitable opportunity to regenerate again. This step ensures the stability and continuity of the engine operation, while optimizing the DPF regeneration strategy.

[0060] In this embodiment, the step S100 includes:

[0061] Step S101, the ECU obtains the current DPF carbon load, the engine running mileage, running time and fuel consumption information since the last successful regeneration, and obtains the vehicle status parameters through the sensor;

[0062] Specifically, the ECU monitors the accumulation of soot particles inside the DPF, i.e., the carbon load, in real time through sensors. As the engine runs longer, the carbon load gradually increases. At the same time, the ECU also records and calculates the engine's mileage, running time, and fuel consumption since the last successful regeneration. This information reflects the engine's working intensity and the DPF's capture efficiency, which helps the ECU determine whether the DPF needs to be regenerated. For example, a special vehicle (such as a crane) has been operating continuously for a period of time, during which the engine has run for 500 kilometers, the running time is 40 hours, the fuel consumption is 200 liters, and the carbon load of the DPF has reached 80% of the preset threshold. After the ECU obtains this data through the sensor, it will compare it with the preset electronic control parameter value. If any parameter exceeds the preset value (such as the carbon load exceeds the threshold), the ECU will trigger the DPF regeneration request and enter the subsequent regeneration judgment process. The importance of this step is that it can ensure that the DPF is regenerated at the appropriate time to avoid excessive accumulation of soot particles, resulting in reduced engine performance and increased fuel consumption. At the same time, by comprehensively considering multiple parameters, the ECU can judge the vehicle status more accurately, thereby achieving efficient DPF regeneration without affecting the normal operation of the vehicle.

[0063] Step S102, comparing the vehicle state parameter with a preset electronic control parameter value;

[0064] Specifically, comparing the vehicle state parameter with the preset electronic control parameter value is a key link, which determines whether to trigger the DPF regeneration request. Specifically, after the ECU (electronic control unit) obtains the DPF carbon load of the current vehicle, the engine mileage since the last successful regeneration, the running time, and the fuel consumption from the sensor, it will compare these actual values ​​with the electronic control parameter thresholds pre-set in the ECU. For example, the preset DPF regeneration carbon load threshold is 50g, and the ECU detects through the sensor that the current DPF carbon load has reached 55g. In step S102, the ECU compares the two values ​​and finds that the actual carbon load exceeds the preset threshold. Therefore, according to the logic of step S103, the ECU will trigger the DPF regeneration request because the vehicle state parameter (i.e., carbon load) is greater than the preset electronic control parameter value. Similarly, if the preset engine mileage threshold is 1000 kilometers, and the engine has run 1200 kilometers since the last successful regeneration, then in the comparison of step S102, this parameter will also trigger the regeneration request. Similarly, the comparison of running time and fuel consumption is based on the same logic. The importance of this step is that it ensures that the DPF regeneration request is triggered only when the vehicle status parameter reaches or exceeds the preset threshold, thus avoiding unnecessary regeneration operations and ensuring that the DPF can be regenerated in a timely and effective manner to maintain the good performance and emission standards of the engine.

[0065] Step S103, if any parameter of the vehicle state parameter is greater than the preset electronic control parameter, a DPF regeneration request is triggered;

[0066] Specifically, the implementation mechanism of this step is that the ECU (electronic control unit) obtains various status parameters of the vehicle in real time through sensors, such as the current DPF (diesel soot particle filter) carbon load, the engine mileage, running time and fuel consumption since the last successful regeneration. These parameters reflect the use of the vehicle and the degree of DPF blockage. Specifically, when the ECU detects that any of these vehicle status parameters exceeds the preset electronic control parameter value, a DPF regeneration request will be triggered. For example, if the current DPF carbon load exceeds the preset regeneration carbon load threshold, it means that there are too many soot particles accumulated in the DPF and regeneration is required to restore its filtering performance. Similarly, if the engine's running mileage, time or fuel consumption since the last regeneration reaches the preset limit, a regeneration request will also be triggered, because the increase in these parameters usually means that the degree of DPF blockage is increasing. For example, a special vehicle (such as a crane) operates in a long-term stationary state, resulting in a gradual increase in the DPF carbon load. When the ECU detects that the DPF carbon load exceeds the preset regeneration carbon load threshold (such as 5 grams / cubic centimeter), a DPF regeneration request will be triggered. At this time, the system will select the appropriate regeneration mode according to the actual operating status of the vehicle (such as whether it is driving, whether it is working, etc.). If it is in the operating state, the system will remind the driver whether to enter the regeneration mode, and after the driver confirms, it will adjust the engine speed and thermal management strategy to increase the exhaust temperature, so as to complete the DPF regeneration without interrupting the operation. The effectiveness of this control method lies in that it can flexibly trigger the regeneration request according to the actual use of the vehicle and the degree of DPF blockage, avoiding the decline in engine performance and increased fuel consumption caused by DPF blockage. At the same time, by combining the judgment of the vehicle's operating status, the regeneration process can be completed without affecting the continuity and efficiency of the operation, which improves the practicality and user experience of the entire vehicle.

[0067] In this embodiment, step S200 includes:

[0068] Step S201, if the DPF regeneration request is triggered, the ECU determines whether the vehicle is in a driving state through the vehicle speed signal;

[0069] Specifically, the purpose of this step is to determine whether the vehicle is in a driving state when the regeneration conditions are currently met, because the regeneration strategies in the driving state and the stationary state are different. When the ECU receives a signal from the sensor, indicating that the DPF carbon load, engine mileage, operating time or fuel consumption and other information have reached the preset regeneration triggering conditions, the ECU will first check the vehicle speed signal. The vehicle speed signal is a parameter that directly reflects whether the vehicle is currently driving. If the vehicle speed is greater than 0km / h, it means that the vehicle is driving. At this time, you can choose to perform driving regeneration, that is, during the normal driving of the vehicle, the exhaust temperature is increased through thermal management control to complete the regeneration. For example, a crane is working on a construction site. Due to being in a stationary state for a long time, a large amount of carbon soot particles accumulate inside the DPF, triggering a regeneration request. At this time, the ECU will first check the vehicle speed signal and find that the vehicle speed is 0km / h, indicating that the vehicle is in a stationary state. According to the control method of the invention, the ECU will not immediately perform parking regeneration, but will further determine whether the vehicle is in an operating state. If the judgment result is an operating state, the ECU will remind the driver whether to enter the regeneration mode, and after the driver confirms, the engine speed and thermal management strategy are adjusted to complete the DPF regeneration without affecting the operation. This step is designed to take into account the special needs of special vehicles operating in a stationary state, avoiding the long interruption of operation caused by traditional parking regeneration, and improving the continuity and efficiency of the operation. At the same time, through accurate vehicle speed signal judgment, it ensures the selection of the most appropriate regeneration strategy under different conditions, protecting the performance of the engine and DPF.

[0070] Step S202, if the vehicle is in driving state, the engine enters DPF regeneration mode to perform operation;

[0071] Specifically, this step is part of the driving regeneration strategy, which aims to regenerate the DPF during normal driving of the vehicle. When the ECU (electronic control unit) determines that the vehicle is in a driving state through the vehicle speed signal, that is, the vehicle speed is greater than 0km / h, if the DPF regeneration request is triggered at this time, the engine will directly enter the DPF regeneration mode without stopping the vehicle. For example, a special vehicle (such as a crane) equipped with a diesel engine is driving on the road, and its ECU detects that the DPF carbon load has reached the preset regeneration threshold and needs to be regenerated. In this case, if the vehicle is in a driving state, the ECU will determine the vehicle state and decide to perform driving regeneration. During the driving regeneration process, the engine management system will adjust the engine's operating parameters (such as speed, fuel injection amount, etc.) to increase the exhaust temperature, thereby promoting the combustion of carbon soot particles in the DPF to achieve regeneration. This process is carried out while the vehicle is driving, and the driver does not need to stop or perform other special operations, thereby ensuring the continuous driving and operating efficiency of the vehicle. Through this step, the present invention effectively solves the need for special vehicles to regenerate DPF during driving, avoids vehicle parking and operation interruption caused by regeneration, and improves the availability and operating efficiency of the vehicle. At the same time, this also reflects the advantages of the present invention in adapting to different vehicle usage scenarios and meeting practical application needs.

[0072] Step S203, if the vehicle is not in the driving state, the ECU determines whether the vehicle is in the operating state or the idling state through the power switch state of the operating room, the PTO signal state, the gear signal, the throttle signal, the remote throttle signal, the engine speed change rate and the injection amount change rate;

[0073] Specifically, the purpose of this step is to accurately distinguish whether the vehicle is idle or performing some kind of operation when it is stationary, so as to determine whether DPF regeneration can be performed. For example, a crane is stationary on a construction site, but its engine is driving the lifting mechanism for hoisting operations. In this case, the power switch in the operator's cab may be turned on, the PTO signal may show that power is being output, the gear signal may indicate that the gearbox is in a specific working gear, the throttle signal and the remote throttle signal may show that the engine is running at a certain load, and the engine speed change rate and the injection amount change rate may also fluctuate due to changes in load. By comprehensively analyzing these signals and parameters, the ECU can determine that the vehicle is currently in an operating state rather than an idle state. Based on this judgment, the ECU can further decide whether to start DPF regeneration. If the vehicle is in an operating state and meets the regeneration conditions (such as the DPF carbon load exceeds the preset threshold), the ECU can remind the driver whether to enter the regeneration mode. After the driver confirms, the engine can enter the DPF regeneration mode to complete the regeneration process without affecting the operation. This design not only ensures the operating efficiency of the vehicle, but also meets environmental protection requirements.

[0074] In this embodiment, step S300 specifically includes:

[0075] After confirming the vehicle status, the ECU sends a signal to the instrument to remind the driver that the engine will perform DPF operation regeneration; the driver determines whether to allow entering the operation regeneration mode based on the operating environment and cargo; if the operating environment or cargo does not allow, the driver can choose to prohibit entering the operation regeneration mode;

[0076] Specifically, when the ECU confirms that the vehicle is in operation, it sends a signal to the driver through the instrument panel, prompting the engine to regenerate the DPF (diesel soot particulate filter) in operation. The key to this step is to let the driver know about the upcoming regeneration process and allow them to make a judgment based on the actual situation. After receiving this prompt, the driver needs to decide whether to allow the vehicle to enter the operation regeneration mode based on the current operating environment and the cargo being transported. For example, if the crane is lifting precision instruments or fragile items, the driver may think that any shaking or instability caused by entering the operation regeneration mode may cause damage to the cargo, so they may choose to prohibit entering the mode. On the contrary, if the operating environment and cargo allow, the driver can confirm to enter the regeneration mode, thereby allowing the engine to regenerate the DPF without affecting the operation. For example, a truck crane is performing a lifting operation on a construction site, and the ECU detects that the DPF needs to be regenerated. In this case, the ECU will issue a prompt to the driver through the instrument panel. After observing the prompt, the driver will evaluate the current operating situation. If the cargo being lifted is heavy and not easily damaged, the driver may judge that entering the operation regeneration mode will not have much impact on the operation, so he chooses to allow it. However, if the objects being hoisted are delicate instruments or glass products, the driver may think that any slight shaking may cause damage to the goods, so they will choose to prohibit entering the operation regeneration mode to ensure the safety of the operation. In short, the design of step S300 fully considers the needs and judgments of the driver in actual operation, so that the DPF regeneration process can be more flexibly adapted to different operating environments and cargo conditions, thereby improving the safety and efficiency of the operation.

[0077] In this embodiment, the step S400 specifically includes:

[0078] After the driver confirms that the operation regeneration mode is allowed, the engine starts to enter the mode; the engine speed is increased to the set value (the appropriate operation regeneration speed is selected according to the engine model and exhaust energy calibration), and the engine exhaust temperature is increased in combination with the thermal management calibration; the RAMP function is used to reduce the vibration during the speed increase process to ensure smooth operation; the DPF regeneration process is completed in the operation state;

[0079] Specifically, the execution process of step S400 is as follows: First, after receiving the DPF regeneration reminder issued by the ECU, the driver determines whether to allow the vehicle to enter the regeneration mode according to the current operating environment and cargo conditions. This step is crucial because it ensures that the regeneration process will not have an adverse effect on the operation, especially in operating scenarios that require high stability and accuracy, such as hoisting precision instruments or fragile items. Once the driver confirms that the regeneration mode is allowed, the engine begins to enter the mode. At this time, the system will select a suitable operating regeneration speed based on the engine model and exhaust energy calibration. This speed is set to ensure that the engine exhaust temperature can be effectively increased while ensuring smooth operation, thereby meeting the needs of DPF regeneration. In order to reduce the jitter that may occur during the speed increase process, the system will use the RAMP function to smoothly increase the speed. The RAMP function is a gradually changing function that can smoothly increase the speed to a preset value within a set time, thereby avoiding jitter and instability caused by sudden changes in the speed. After the speed is steadily increased and reaches the set value, the engine will perform the DPF regeneration process in the operating state. During this process, the system will continuously monitor the engine's exhaust temperature and other related parameters to ensure the effective progress of the regeneration process. At the same time, the driver can also understand the progress and status of the regeneration process in real time through the indication on the instrument. For example, when the crane's DPF triggers a regeneration request, if the crane is in operation, the ECU will issue a reminder to the driver. After confirming that the operating environment and cargo allow, the driver chooses to enter the regeneration mode. At this time, the engine begins to increase the speed steadily, and reaches the operating regeneration speed within the set time through the RAMP function. After the speed stabilizes, the crane performs DPF regeneration in the operating state. During the whole process, the operation of the crane was not significantly affected, and the DPF was effectively regenerated.

[0080] In summary, step S400 achieves the goal of smooth and effective DPF regeneration of special vehicles in operation through intelligent control and refined design. This not only improves the continuity and efficiency of the operation, but also enhances safety and stability, providing a new solution for DPF regeneration of special vehicles.

[0081] In this embodiment, the step S500 specifically includes:

[0082] After successful regeneration, the engine exits the operation regeneration mode and returns to the idle speed or the set operation speed; if the operation stops or the exhaust temperature is low during the operation regeneration process, resulting in unsuccessful regeneration, the engine also exits the operation regeneration mode and waits for the next operation to determine whether to carry out DPF operation regeneration according to actual needs;

[0083] Specifically, this step includes two possible results: regeneration success or regeneration failure. If the DPF regeneration is successful, the engine will exit the working regeneration mode and return to the previous idle state or the set working speed. This means that the vehicle can continue its normal working operation without worrying about the DPF clogging problem. At this time, the engine performance and fuel economy will also be restored because the exhaust back pressure has been reduced. However, if the regeneration is unsuccessful during the working regeneration process due to some reasons (such as work stoppage, low exhaust temperature, etc.), the engine will also exit the working regeneration mode. In this case, the system will record the regeneration failure information and wait for the next operation to determine whether to try the DPF working regeneration again according to actual needs. This design ensures that the vehicle completes the DPF regeneration as much as possible without affecting normal operation, so as to maintain the good performance of the engine and meet the emission standards. For example, a crane is performing a long-term stationary operation on a construction site, during which a DPF regeneration request is triggered. The system will determine that the vehicle is currently in working state and remind the driver whether to enter the regeneration mode. After the driver confirms, the engine enters the DPF regeneration mode, and the exhaust temperature is increased by increasing the speed and combining thermal management to complete the regeneration in the working state. If the regeneration is successful, the crane will continue its operation; if the regeneration fails for some reason, the engine will exit the regeneration mode and record the failure information, waiting for the next operation to be processed. In short, the design of step S500 ensures the flexibility and continuity of the vehicle during the DPF regeneration process, while ensuring the performance of the engine and the satisfaction of emission standards.

[0084] Embodiment 2

[0085] Figure 2 FIG. 1 is a schematic diagram of a control system for DPF regeneration of a special vehicle in Embodiment 2 of the present invention. Figure 2 As shown, embodiment 2 provides a control system for DPF operation regeneration of a special vehicle, including: a judgment module 201, a generation module 202, a reminder module 203, an entry module 204 and an exit module 205. The judgment module 201 is used for the ECU to obtain vehicle state parameters and judge whether the vehicle state parameters meet the DPF regeneration request. The generation module 202 is used to judge the vehicle operation state and generate an idle state or an operation state if the DPF regeneration request is met. The reminder module 203 is used for the ECU to remind the driver whether to enter the regeneration mode if the vehicle operation state is the operation state. The entry module 204 is used for the engine to enter the DPF regeneration mode to perform the operation if the driver confirms to enter the regeneration mode. The exit module 205 is used for the engine to exit the DPF regeneration mode after the DPF regeneration is successful or failed.

[0086] In this embodiment, the judgment module 201 includes: a obtaining unit, a comparison unit and a triggering unit. The obtaining unit is used for the ECU to obtain the current DPF carbon load, the engine running mileage, running time and fuel consumption information from the last successful regeneration to the present through sensors, and obtain the vehicle state parameters. The comparison unit is used to compare the vehicle state parameters with the preset electronic control parameter values. And the triggering unit is used to trigger the DPF regeneration request if any parameter of the vehicle state parameter is greater than the preset electronic control parameter.

[0087] In this embodiment, the generation module 202 includes: a first judgment unit, an entry unit, and a second judgment unit. The first judgment unit is used for the ECU to judge whether the vehicle is in a driving state through a vehicle speed signal if the DPF regeneration request is satisfied. The entry unit is used for the engine to enter the DPF regeneration mode to perform the operation if the vehicle is in a driving state. The second judgment unit is used for the ECU to judge whether the vehicle is in an operating state or an idling state through the power-on switch state of the operating room, the PTO signal state, the gear signal, the throttle signal, the remote throttle signal, the engine speed change rate, and the injection amount change rate if the vehicle is not in a driving state.

[0088] The various variations and specific examples of the control method for DPF operation regeneration of special vehicles provided in Example 1 are also applicable to the control system for DPF operation regeneration of special vehicles provided in this example. Through the above detailed description of the control method for DPF operation regeneration of a special vehicle, those skilled in the art can clearly know the implementation method of the control system for DPF operation regeneration of a special vehicle in this example. Therefore, for the sake of brevity of the specification, it will not be described in detail here.

[0089] In practical application, the present invention provides a control method for regeneration of DPF operation of a special vehicle, such as Figure 4 As shown:

[0090] In the first step, the ECU obtains the current DPF carbon load, the engine mileage since the last successful regeneration, the engine running time since the last successful regeneration, and the engine fuel consumption information since the last successful regeneration.

[0091] In the second step, the acquired information parameters are compared with the calibrated electronic control parameter values ​​in the ECU. When any monitored parameter is greater than the calibrated electronic control parameter, such as the current DPF carbon load value is greater than the calibrated DPF regeneration carbon load value, the DPF triggers a regeneration request.

[0092] like Figure 5 As shown:

[0093] In the first step, when the ECU requests DPF regeneration, the engine needs to judge the vehicle's operating status. The ECU can judge whether the vehicle is in a normal driving state through the vehicle speed signal. If the vehicle speed is greater than 0km / h, when it is judged that the vehicle is in a driving state, it will perform normal driving regeneration.

[0094] In the second step, when the vehicle speed = 0km / h, the vehicle is judged to be in a stationary state. The ECU further judges whether the vehicle is in an operating state or an idling state through the special vehicle operation room power switch signal, PTO signal status, gear signal, throttle signal, remote throttle signal, engine speed change rate, injection amount change rate and other conditions. The judgment condition can be reasonably selected according to the vehicle configuration. For example, if the vehicle has no operation room, the operation room power switch signal is not selected. If there is no remote throttle, the remote throttle signal is not selected. The special vehicle selects the appropriate gearbox gear and uses the PTO box as the power output, so the PTO switch signal and gearbox gear signal need to be selected. Because the engine speed and injection amount will change with different loads when the special vehicle is operating, the engine speed change rate and injection amount change rate can be added for further judgment. The selected signal and judgment condition use the calculation logic "and" relationship to accurately judge the current operating state of the vehicle. If the judgment conditions all meet the pre-calibrated condition requirements at the same time, it is confirmed that the vehicle is in an operating state. If the requirements are not met, it is confirmed that the vehicle is in an idling state.

[0095] like Figure 6 As shown:

[0096] In the first step, after confirming the vehicle status, the ECU sends a signal to the instrument to remind the driver that the engine will perform DPF regeneration.

[0097] In the second step, the driver determines whether to allow the engine to enter the operation regeneration mode based on the operating environment and the operating cargo. For example, when a special vehicle crane is hoisting precision instruments or fragile items, if it enters the operation regeneration mode, the entire vehicle may shake to a certain extent, which may damage the items. At this time, the driver should choose to prohibit entering the operation regeneration mode.

[0098] In the third step, after the driver confirms that he is allowed to enter the working regeneration mode, the engine starts to enter the working regeneration mode by increasing the engine speed to the set speed. Because different models of engines produce different exhaust energy, the engine needs to be calibrated to select the appropriate working regeneration speed. In order to reduce the situation where the speed suddenly increases too quickly, causing the engine or working jitter, the RAMP function can be used to set the set speed within a certain period of time. By increasing the engine speed, combined with the thermal management calibration, the engine exhaust temperature during operation can be increased, and the vehicle can complete DPF regeneration while in operation.

[0099] Step 4: After successful regeneration, exit the regeneration mode and return to idle speed or set working speed. If the DPF fails to regenerate during regeneration due to operation stop and low exhaust temperature, the engine will exit the regeneration mode and return to idle speed or set working speed, waiting for the next operation to determine whether to carry out DPF regeneration according to actual needs.

[0100] Embodiment 3

[0101] Figure 3 is a schematic diagram of the structure of an electronic device in Embodiment 3 of the present invention, such as Figure 3 As shown, the third embodiment further provides an electronic device 300 , which may include: a processor 301 and a memory 302 .

[0102] The memory 302 is used to store programs; the memory 302 may include volatile memory (English: volatile memory), such as random-access memory (English: random-access memory, abbreviated: RAM), such as static random-access memory (English: static random-access memory, abbreviated: SRAM), double data rate synchronous dynamic random access memory (English: Double Data Rate Synchronous Dynamic Random Access Memory, abbreviated: DDR SDRAM), etc.; the memory may also include non-volatile memory (English: non-volatile memory), such as flash memory (English: flash memory). The memory 302 is used to store computer programs (such as applications, functional modules, etc. that implement the above method), computer instructions, etc., and the above computer programs, computer instructions, etc. can be partitioned and stored in one or more memories 302. And the above computer programs, computer instructions, data, etc. can be called by the processor 301.

[0103] The above-mentioned computer programs, computer instructions, etc. may be stored in partitions in one or more memories 302 . And the above-mentioned computer programs, computer instructions, etc. may be called by the processor 301 .

[0104] The processor 301 is used to execute the computer program stored in the memory 302 to implement each step of the method involved in the above embodiment.

[0105] For details, please refer to the relevant description in the previous method embodiment.

[0106] The processor 301 and the memory 302 may be independent structures or integrated structures. When the processor 301 and the memory 302 are independent structures, the memory 302 and the processor 301 may be coupled and connected via a bus 303 .

[0107] The electronic device of this embodiment can execute the technical solution in the above method, and its specific implementation process and technical principle are the same, which will not be repeated here.

[0108] Embodiment 4

[0109] Embodiment 4 also provides a computer-readable storage medium, including a computer program and instructions. When the computer program or instructions are executed on a computer, the computer executes the control method for regeneration of the DPF operation of a special vehicle of any embodiment of the present invention.

[0110] Computer-readable storage media include: USB flash drives, mobile hard disks, ROM, RAM, magnetic disks, or optical disks, and other media that can store program codes.

[0111] This embodiment also provides a computer program product, which includes: a computer program, which is stored in a readable storage medium. At least one processor of an electronic device can read the computer program from the readable storage medium, and at least one processor executes the computer program so that the electronic device executes the solution provided by any of the above embodiments.

[0112] It should be understood that the various forms of processes shown above can be used to reorder, add or delete steps. For example, the steps described in the disclosure of the present invention can be performed in parallel, sequentially or in different orders, as long as the desired results of the technical solution disclosed in the present invention can be achieved, and this document does not limit this.

[0113] In summary, the control and system for the regeneration of the DPF operation of a special vehicle of the present invention has the following beneficial effects:

[0114] 1. Improved operation continuity and efficiency: This invention increases the judgment conditions for the operating status parameters of the entire vehicle, thereby achieving DPF regeneration without stopping the operation when the special-purpose vehicle is operating continuously in a stationary state; this avoids the long-term interruption of operation caused by traditional parking regeneration, and significantly improves the operation continuity and overall efficiency of the special-purpose vehicle.

[0115] 2. Accurately judge the vehicle status: By integrating multiple parameters (such as the power switch status of the operating room, the PTO signal status, the gear signal, the throttle signal, the remote throttle signal, the engine speed change rate and the injection amount change rate), it can accurately judge whether the vehicle is in operation or idling state; this precise judgment helps to trigger DPF regeneration at the right time to avoid unnecessary interference.

[0116] 3. Enhanced safety and stability: The system has added a DPF operation regeneration control mode instrument prompt confirmation function, which allows the driver to determine whether to enter the regeneration mode based on the operating environment and cargo conditions; especially when hoisting precision instruments or fragile items, the driver can choose to prohibit entering the operation regeneration mode to ensure that the operating speed is stable and does not shake, thereby eliminating safety hazards.

[0117] 4. Optimized regeneration strategy: Provides strategies for DPF regeneration in driving and operating states, which helps to effectively regenerate DPF under different working conditions, reduce the accumulation of carbon soot particles, and maintain good engine performance.

[0118] 5. Improved user experience: Through intelligent control methods and systems, the driver's intervention and waiting time are reduced, and the convenience and comfort of vehicle use are improved; at the same time, through precise control and prompts, the driver's sense of control over the vehicle status is enhanced.

[0119] 6. Strong adaptability: The invention is applicable to various vehicles with special purposes, such as cranes, truck-mounted cranes, mixer trucks, etc. These vehicles operate in a stationary state for a long time and have a more urgent need for DPF regeneration; the control method and system of the invention can well meet the special needs of these vehicles.

[0120] Note that the above are only preferred embodiments of the present invention and the technical principles used. Those skilled in the art will understand that the present invention is not limited to the specific embodiments described herein, and that various obvious changes, readjustments and substitutions can be made by those skilled in the art without departing from the scope of protection of the present invention. Therefore, although the present invention has been described in more detail through the above embodiments, the present invention is not limited to the above embodiments, and may include more other equivalent embodiments without departing from the concept of the present invention, and the scope of the present invention is determined by the scope of the appended claims.

Claims

1. A control method for regeneration of DPF operation of a special vehicle, characterized in that: include: The ECU obtains vehicle status parameters and determines whether the vehicle status parameters meet the requirement of triggering DPF regeneration request; If the DPF regeneration request is satisfied, the vehicle operation state is determined to generate an idle state or an operating state; If the vehicle running state is the operating state, the ECU reminds the driver whether to enter the regeneration mode; If the driver confirms to enter the regeneration mode, the engine enters the DPF regeneration mode to perform the operation; After DPF regeneration succeeds or fails, the engine exits DPF regeneration mode.

2. The control method for DPF operation regeneration of a special vehicle according to claim 1, characterized in that: The ECU acquires vehicle status parameters, and determines whether the vehicle status parameters satisfy the requirement for triggering DPF regeneration, including: The ECU obtains the current DPF carbon load, the engine running mileage, running time and fuel consumption information since the last successful regeneration, and obtains the vehicle status parameters through the sensor; comparing the vehicle state parameter with a preset electronic control parameter value; If any parameter of the vehicle state parameter is greater than the preset electronic control parameter, a DPF regeneration request is triggered.

3. The control method for DPF operation regeneration of a special vehicle according to claim 1, characterized in that: If the DPF regeneration request is satisfied, the vehicle operation state is determined, and the idle state or operating state is generated, including: If the DPF regeneration request is triggered, the ECU determines whether the vehicle is in driving state through the vehicle speed signal; If the vehicle is in motion, the engine enters the DPF regeneration mode to perform the operation; If the vehicle is not in driving state, the ECU determines whether the vehicle is in operating state or idling state through the power switch state of the operating room, PTO signal state, gear signal, throttle signal, remote throttle signal, engine speed change rate and injection amount change rate.

4. A control system for DPF regeneration of a special vehicle, characterized in that: include: A judgment module, used for the ECU to obtain vehicle state parameters and judge whether the vehicle state parameters meet the requirement of triggering DPF regeneration request; A generating module, for determining the vehicle running state and generating an idle state or an operating state if the DPF regeneration request is satisfied; a reminder module, configured to, if the vehicle operation state is the operation state, prompt the ECU to remind the driver whether to enter the regeneration mode; An entry module, used for causing the engine to enter a DPF regeneration mode to perform operations if the driver confirms entering the regeneration mode; as well as The exit module is used to exit the DPF regeneration mode of the engine after the DPF regeneration succeeds or fails.

5. The control system for DPF operation regeneration of a special vehicle according to claim 4, characterized in that: The judging module comprises: The obtaining unit is used for the ECU to obtain the current DPF carbon load, the engine running mileage, running time and fuel consumption information since the last successful regeneration to the present through the sensor, and obtain the vehicle state parameters; a comparison unit, configured to compare the vehicle state parameter with a preset electronic control parameter value; and A trigger unit is used to trigger a DPF regeneration request if any parameter of the vehicle state parameter is greater than the preset electronic control parameter.

6. The control system for DPF operation regeneration of a special vehicle according to claim 4, characterized in that: The generation module comprises: The first judgment unit is used for the ECU to judge whether the vehicle is in a driving state through a vehicle speed signal if the DPF regeneration request is satisfied; An entry unit is used for the engine to enter a DPF regeneration mode to perform operations when the vehicle is in a driving state; The second judgment unit is used to judge whether the vehicle's operating state is in an operating state or an idling state by the ECU through the power-on switch state of the operating room, the PTO signal state, the gear signal, the throttle signal, the remote throttle signal, the engine speed change rate and the injection amount change rate when the vehicle is not in a driving state.

7. An electronic device, characterized in that: include: at least one processor; as well as a memory communicatively coupled to the at least one processor; Wherein, the memory stores instructions that can be executed by the at least one processor, and the instructions are executed by the at least one processor so that the at least one processor can execute the control method for DPF operation regeneration of a special vehicle as described in any one of claims 1-3.

8. A computer-readable storage medium, characterized in that: The invention comprises a computer program and instructions. When the computer program or the instructions are executed on a computer, the computer is caused to execute the control method for regeneration of the DPF operation of a special vehicle as claimed in any one of claims 1 to 3.

Images