Post-treatment regeneration target temperature control method, device and equipment and storage medium

Abstract

The invention discloses a post-processing regeneration target temperature control method, device and equipment and a storage medium, and the post-processing regeneration target temperature control method comprises the steps that the actual regeneration temperature Tr of a post-processing system is monitored in real time, whether a vehicle enters a regeneration demand stage or not is determined, and whether the regeneration target temperature reaches a preset maximum regeneration target temperature value Ta or not is verified; if it is judged that the vehicle enters the regeneration demand stage, the regeneration target temperature reaches the maximum regeneration target temperature value Ta, and the actual regeneration temperature Tr is smaller than or equal to a preset regeneration target temperature threshold value Ttr, the regeneration target temperature is lowered to a set regeneration target temperature value Ta1, and the actual regeneration temperature Tr reaches the maximum regeneration target temperature value Ta; and then the regeneration target temperature is controlled to climb to the maximum regeneration target temperature value Ta again according to the climbing curve logic of the original regeneration target temperature. And the regeneration target temperature is switched and adjusted, so that the risk of overtemperature and the risk of insufficient regeneration efficiency due to the fact that the actual regeneration temperature of post-treatment fluctuates greatly up and down at the regeneration target temperature are improved.

Description

Technical Field

[0001] The present application relates to the field of engine exhaust purification, and in particular to a post-processing regeneration target temperature control method, device, equipment and storage medium. Background Art

[0002] Diesel particulate filter (DPF) is a technology used to reduce particulate matter in diesel engine exhaust emissions and an important vehicle emission control device. It is designed to capture and reduce the emission of particulate matter (such as carbon black) to meet strict environmental regulations. DPF is installed in the aftertreatment of diesel vehicles. As time goes by, the exhaust particulate matter it captures will gradually accumulate, resulting in a decrease in its filtering efficiency. Therefore, DPF must be regenerated regularly to remove the accumulated particulate matter and restore its filtering performance.

[0003] In the related technology, the current main method of controlling the temperature of the regeneration process is to control the target heat release temperature of the DPF active regeneration process according to the carbon loading level (the mass of carbon emission particulate matter carried in the DPF). That is, the higher the carbon loading level, the lower the regeneration target temperature. When the carbon loading drops to a certain level, the regeneration target temperature maintains a certain high level and does not change until the time or carbon loading reaches a certain threshold, at which time the regeneration process ends.

[0004] However, when encountering complex driving conditions such as mountainous areas and congested cities, where the driver needs to repeatedly start and stop or accelerate, or park and idle, or drive at low speeds, resulting in low exhaust temperature, the actual regeneration temperature performance is better than Figure 1 The curve in is steeper and fluctuates more frequently. When such frequent temperature fluctuations occur, the control of the post-processing regeneration target temperature is greatly limited. The most common situation is that when the engine is rapidly accelerated from idle, the exhaust temperature of the engine is very low in the early stage, and the exhaust flow rate suddenly increases, while the regeneration target temperature is still high. At this time, the regeneration oil amount calculated by the engine EECU is very large, and a large amount of fuel is instantly sprayed into the post-processing, which is very prone to regeneration overheating. When regeneration overheating occurs, according to the original regeneration target control strategy, closed-loop control will be performed to reduce the injection amount and lower the actual temperature. The superposition of these two situations will inevitably lead to large fluctuations in the actual temperature of the post-processing regeneration above and below the regeneration target temperature, which not only poses the risk of overheating, but also the risk of insufficient regeneration efficiency. Summary of the invention

[0005] The present application provides a post-processing regeneration target temperature control method, device, equipment and storage medium, which can solve the technical problem in the related art that the actual temperature of post-processing regeneration fluctuates greatly above and below the regeneration target temperature, posing both the risk of overheating and the risk of insufficient regeneration efficiency.

[0006] In a first aspect, an embodiment of the present application provides a post-processing regeneration target temperature control method, the post-processing regeneration target temperature control method comprising:

[0007] Monitor the actual regeneration temperature Tr of the post-processing system in real time, confirm whether the vehicle has entered the regeneration demand phase, and verify whether the regeneration target temperature has reached the preset maximum regeneration target temperature value Ta;

[0008] If it is determined that the vehicle enters the regeneration demand stage, the regeneration target temperature has reached the maximum regeneration target temperature value Ta, and the actual regeneration temperature Tr is less than or equal to the preset regeneration target temperature threshold value Ttr, the regeneration target temperature is lowered to the set regeneration target temperature value Ta1, and then the regeneration target temperature is controlled according to the climbing curve logic of the original regeneration target temperature to climb again to the maximum regeneration target temperature value Ta.

[0009] In combination with the first aspect, in one embodiment, after the actual regeneration temperature Tr of the post-processing system is monitored in real time, confirming whether the vehicle has entered the regeneration demand phase, and verifying whether the regeneration target temperature has reached a preset maximum regeneration target temperature value Ta, the method further includes:

[0010] Monitor whether the vehicle is in a complex driving scenario;

[0011] If it is determined that the vehicle enters the regeneration demand stage, the regeneration target temperature has reached the maximum regeneration target temperature value Ta, the actual regeneration temperature Tr is greater than the preset regeneration target temperature threshold value Ttr, and the vehicle is in a complex driving scenario, the regeneration target temperature value is lowered to the set regeneration target temperature value Ta1, and then climbed again to the maximum regeneration target temperature value Ta according to the climbing curve logic of the original regeneration target temperature.

[0012] In combination with the first aspect, in one implementation, monitoring whether the vehicle is in a complex driving scenario includes:

[0013] Monitor vehicle speed, engine speed and throttle changes;

[0014] If the vehicle speed is 0 multiple times, the engine speed is idling, and the throttle fluctuates greatly, it is determined that the vehicle is in a congested road scenario.

[0015] In combination with the first aspect, in one implementation, monitoring whether the vehicle is in a complex driving scenario includes:

[0016] Monitor vehicle speed, engine speed and throttle changes;

[0017] If the monitored vehicle speed is uniform, the engine speed is slowly decreasing but is higher than the idle speed, and the throttle change is approaching zero, it is determined that the vehicle is in a long downhill scenario.

[0018] In combination with the first aspect, in one embodiment, before the real-time monitoring of the actual regeneration temperature Tr of the post-processing system, confirming whether the vehicle has entered the regeneration demand phase, and verifying whether the regeneration target temperature has reached a preset maximum regeneration target temperature value Ta, the following steps are included:

[0019] The regeneration target temperature threshold value Ttr and the regeneration target temperature value Ta1 are calibrated; wherein the regeneration target temperature threshold value Ttr is smaller than the regeneration target temperature value Ta1.

[0020] In a second aspect, an embodiment of the present application provides a post-processing regeneration target temperature control device, the post-processing regeneration target temperature control device comprising:

[0021] A monitoring module is used to monitor the actual regeneration temperature Tr of the post-processing system in real time, confirm whether the vehicle has entered the regeneration demand phase, and verify whether the regeneration target temperature has reached a preset maximum regeneration target temperature value Ta;

[0022] The judgment module is used to lower the regeneration target temperature to the set regeneration target temperature value Ta1 if it is judged that the vehicle enters the regeneration demand stage, the regeneration target temperature has reached the maximum regeneration target temperature value Ta, and the actual regeneration temperature Tr is less than or equal to the preset regeneration target temperature threshold value Ttr, and then control the regeneration target temperature to climb again to the maximum regeneration target temperature value Ta according to the climbing curve logic of the original regeneration target temperature.

[0023] In conjunction with the second aspect, in one implementation, the monitoring module is further used to monitor whether the vehicle is in a complex driving scenario;

[0024] The judgment module is also used to monitor whether the vehicle is in a complex driving scenario; if it is judged that the vehicle enters the regeneration demand stage, the regeneration target temperature has reached the maximum regeneration target temperature value Ta, the actual regeneration temperature Tr is greater than the preset regeneration target temperature threshold value Ttr, and the vehicle is in a complex driving scenario, the regeneration target temperature value is lowered to the set regeneration target temperature value Ta1, and then climbed again to the maximum regeneration target temperature value Ta according to the climbing curve logic of the original regeneration target temperature.

[0025] In conjunction with the second aspect, in one implementation, the monitoring module is further used to monitor vehicle speed, engine speed, and throttle changes;

[0026] The judgment module is also used to judge that the vehicle is in a congested road section if the vehicle speed is 0 for many times, the engine speed is idling and the throttle changes fluctuate greatly.

[0027] In the third aspect, an embodiment of the present application provides a post-treatment regeneration target temperature control device, which includes a processor, a memory, and a post-treatment regeneration target temperature control program stored on the memory and executable by the processor, wherein when the post-treatment regeneration target temperature control program is executed by the processor, the steps of the post-treatment regeneration target temperature control method described in some of the above embodiments are implemented.

[0028] In a fourth aspect, an embodiment of the present application provides a computer-readable storage medium, on which a post-processing regeneration target temperature control program is stored, wherein when the post-processing regeneration target temperature control program is executed by a processor, the steps of the post-processing regeneration target temperature control method described in some of the above embodiments are implemented.

[0029] The beneficial effects brought by the technical solution provided by the embodiments of the present application include:

[0030] If it is determined that the vehicle has entered the regeneration demand stage, the regeneration target temperature has reached the maximum regeneration target temperature value Ta, and the actual regeneration temperature Tr is less than or equal to the preset regeneration target temperature threshold value Ttr, the regeneration target temperature is lowered to the set regeneration target temperature value Ta1, and then the regeneration target temperature is controlled to climb to the maximum regeneration target temperature value Ta according to the climbing curve logic of the original regeneration target temperature. Without affecting the normal regeneration target temperature logic, only during the maximum target temperature duration, the post-processing actual regeneration temperature Tr is less than or equal to the preset regeneration target temperature threshold value Ttr (indicating that the post-processing actual regeneration temperature Tr is low due to parking idling, low-speed driving, etc.), indicating that the current vehicle actual regeneration temperature deviation is too large, and the temperature fluctuation is used as a trigger condition to switch and adjust the regeneration target temperature, so as to improve the post-processing regeneration actual temperature. The temperature fluctuates greatly up and down the regeneration target temperature, which has both the risk of overheating and the risk of insufficient regeneration efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 It is a curve diagram of the regeneration target temperature and the actual regeneration temperature in the post-treatment regeneration stage in the current scheme under the theoretical state;

[0032] Figure 2 It is a curve diagram of the regeneration target temperature and the actual regeneration temperature in the post-treatment regeneration stage in the current scheme under actual conditions;

[0033] Figure 3 A graph showing the target regeneration temperature and the actual regeneration temperature during the post-processing regeneration phase of the present application;

[0034] Figure 4 A flow chart of an embodiment of a post-processing regeneration target temperature control method of the present application;

[0035] Figure 5 This is a schematic diagram of the hardware structure of the post-processing regeneration target temperature control device involved in the embodiment of the present application. DETAILED DESCRIPTION

[0036] In order to enable those skilled in the art to better understand the solution of the present application, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0037] It is important to understand that the current main regeneration process temperature control method is to control the target heat release temperature of the DPF active regeneration process based on the carbon load (the mass of carbon emission particles carried by the DPF). That is, the higher the carbon load level, the lower the regeneration target temperature. When the carbon load drops to a certain level, the regeneration target temperature remains at a high level and does not change until the time or carbon load reaches a certain threshold, and then the regeneration process ends. The process is as follows: Figure 1 As shown. Although the current scheme can better characterize the control of the regeneration target temperature during the DPF regeneration process to a certain extent, and coordinate the gradual temperature increase according to the carbon load level and time, so as to prevent the risk of overheating of the regeneration temperature and the need for rapid increase at low temperatures. However, this control method is relatively theoretical and there is a big difference between the regeneration temperature performance of the actual vehicle.

[0038] In actual vehicle driving, except for stable road conditions such as highways and national roads, the above factors may remain relatively stable. When encountering complex driving conditions such as mountainous areas and congested cities, where the driver needs to repeatedly start and stop or accelerate, or long-term downhill sliding resulting in low exhaust temperature, the actual regeneration temperature performance is relatively stable. Figure 1 The curves in the process are steeper and fluctuate more frequently, such as Figure 2As shown. When such frequent temperature fluctuations occur, the post-processing regeneration target temperature control is greatly limited. The most common situation is that when the engine is rapidly accelerated from idle, the exhaust temperature of the engine is very low in the early stage, and the exhaust flow rate suddenly increases, while the regeneration target temperature is still high. At this time, the regeneration oil amount calculated by the engine EECU is very large, and a large amount of fuel is instantly sprayed into the post-processing, which is very prone to regeneration overheating. On the other hand, when regeneration overheating occurs, according to the original regeneration target control strategy, closed-loop control will be performed to reduce the injection amount and lower the actual temperature. The superposition of these two situations will inevitably cause the actual temperature of the post-processing regeneration to fluctuate up and down the regeneration target temperature, which has both the risk of overheating and the risk of insufficient regeneration efficiency.

[0039] In order to make the objectives, technical solutions and advantages of the present application clearer, the implementation methods of the present application will be further described in detail below in conjunction with the accompanying drawings.

[0040] In a first aspect, an embodiment of the present application provides a method for controlling a post-treatment regeneration target temperature.

[0041] In one embodiment, referring to Figure 4 , Figure 4 This is a flow chart of the first embodiment of the post-processing regeneration target temperature control method of this application. Figure 4 As shown, the post-treatment regeneration target temperature control method includes:

[0042] S100: real-time monitoring of the actual regeneration temperature Tr of the post-processing system, confirming whether the vehicle has entered the regeneration demand phase, and verifying whether the regeneration target temperature has reached a preset maximum regeneration target temperature value Ta;

[0043] S200: If it is determined that the vehicle enters the regeneration demand stage, the regeneration target temperature has reached the maximum regeneration target temperature value Ta, and the actual regeneration temperature Tr is less than or equal to the preset regeneration target temperature threshold value Ttr, the regeneration target temperature is lowered to the set regeneration target temperature value Ta1, and then the regeneration target temperature is controlled according to the climbing curve logic of the original regeneration target temperature to climb again to the maximum regeneration target temperature value Ta.

[0044] In this embodiment, step S100 monitors the actual regeneration temperature Tr of the post-processing system in real time, determines whether the vehicle has entered the stage where regeneration is required, and checks whether the current regeneration target temperature has reached the preset maximum regeneration target temperature value Ta. If step S200 determines that the vehicle has entered the regeneration requirement stage, the regeneration target temperature has reached the maximum regeneration target temperature value Ta, and the actual regeneration temperature Tr is less than or equal to the preset regeneration target temperature threshold value Ttr, this threshold value is a lower temperature threshold set to ensure the effective implementation of the regeneration process. The regeneration target temperature will be lowered from the current maximum value Ta to a set value Ta1. This adjustment is to optimize the regeneration process and prevent low regeneration efficiency. The adjusted regeneration target temperature Ta1 will gradually increase to the maximum regeneration target temperature value Ta according to the climbing curve logic of the originally designed regeneration target temperature. This process ensures the smooth progress of the regeneration process and helps to maintain the stability and efficiency of the system. Without affecting the normal regeneration target temperature logic, only when the actual regeneration temperature Tr of the post-processing is less than or equal to the preset regeneration target temperature threshold value Ttr during the duration of the maximum target temperature (indicating that the actual regeneration temperature Tr of the post-processing is low due to parking idling, low-speed driving, etc.), it means that the current actual regeneration temperature deviation of the vehicle is too large, and there is a risk of insufficient regeneration capacity. The regeneration target temperature is switched and adjusted with temperature fluctuation as the trigger condition to improve the actual regeneration temperature of the post-processing regeneration, which fluctuates greatly above and below the regeneration target temperature, posing both the risk of overheating and the risk of insufficient regeneration efficiency.

[0045] Furthermore, in one embodiment, after S100, the following steps are also included:

[0046] S300: monitor whether the vehicle is in a complex driving scenario;

[0047] S400: If it is determined that the vehicle enters the regeneration demand stage, the regeneration target temperature has reached the maximum regeneration target temperature value Ta, the actual regeneration temperature Tr is greater than the preset regeneration target temperature threshold value Ttr, and the vehicle is in a complex driving scenario, the regeneration target temperature value is lowered to the set regeneration target temperature value Ta1, and then climbed again to the maximum regeneration target temperature value Ta according to the climbing curve logic of the original regeneration target temperature.

[0048] In this embodiment, in mountainous areas or congested cities, the driver needs to start, stop and accelerate the vehicle frequently. This will cause a sharp change in the engine exhaust temperature and flow rate, making it difficult to control the temperature during the regeneration process. When the engine accelerates quickly from an idle state, due to the low exhaust temperature of the engine in the early stage, the exhaust flow rate suddenly increases, and the regeneration target temperature is still high, the engine control unit (EECU) may calculate a large regeneration oil amount value to try to quickly increase the exhaust temperature. However, this practice of spraying a large amount of fuel instantly can easily lead to regeneration overheating. Or during a long downhill gliding process, the vehicle speed gradually decreases, and the driver may need to step on the accelerator in stages to maintain the speed. This will also lead to instability in the engine exhaust temperature and flow rate. Due to the low exhaust temperature of the engine in the early stage, the exhaust flow rate increases during sudden acceleration, while the regeneration target temperature is still high. In this case, the EECU may misjudge and increase the amount of regeneration oil, which leads to regeneration overheating. On the other hand, when regeneration overheating occurs, according to the original regeneration target control strategy, a closed-loop control of reducing the injection amount will be performed to reduce the actual temperature. The combination of these two situations will inevitably cause the actual temperature of post-processing regeneration to fluctuate up and down the regeneration target temperature, which will cause both the risk of overheating and the risk of insufficient regeneration efficiency. In mountainous areas, congested cities, or long-term downhill gliding scenarios, the actual regeneration temperature Tr will be higher than the set regeneration target temperature threshold value Ttr. Therefore, if it is determined that the vehicle has entered the regeneration demand stage, the regeneration target temperature has reached the maximum regeneration target temperature value Ta, the actual regeneration temperature Tr is greater than the preset regeneration target temperature threshold value Ttr, and the vehicle is in a complex driving scenario, the regeneration target temperature value will be lowered to the set regeneration target temperature value Ta1, and then according to the climbing curve logic of the original regeneration target temperature, it will climb back to the maximum regeneration target temperature value Ta, and according to the actual driving conditions, the staged regeneration target temperature adjustment will be performed, that is, the limit level of the regeneration injection amount will be suppressed, thereby preventing the actual regeneration temperature from overshooting due to the sudden increase in the required injection amount, making the temperature control of the entire regeneration process more stable and effective.

[0049] Furthermore, in one embodiment, S300 and S400 may also be before S200 or be in parallel with S200.

[0050] Furthermore, in one embodiment, in S300, the following steps are included:

[0051] S300-1: monitor vehicle speed, engine speed and throttle changes;

[0052] S300-2: If the vehicle speed is 0 for multiple times, the engine speed is idling, and the throttle changes greatly, it is determined that the vehicle is in a congested road scenario.

[0053] In this embodiment, if the vehicle speed is repeatedly monitored to be 0, the engine speed is idling, and the throttle changes greatly, it is determined that the vehicle is in a congested section. In a congested section, the vehicle starts and stops frequently, the speed is zero, the engine speed is reduced to idle, and the throttle changes greatly. These characteristics together constitute the basis for judging the congested section. This embodiment can accurately determine whether the vehicle is in a congested section by monitoring the key driving parameters of the vehicle, thereby providing an important basis for subsequent strategies.

[0054] Furthermore, in one embodiment, in S300, the following steps are included:

[0055] S300-1: monitor vehicle speed, engine speed and throttle changes;

[0056] S300-2: If the monitored vehicle speed is uniform, the engine speed is slowly decreasing but higher than the idle speed, and the throttle change is approaching zero, it is determined that the vehicle is in a long downhill scenario.

[0057] In this embodiment, if the system detects that the vehicle speed remains constant, the engine speed slowly decreases but is still higher than the idle speed, and the throttle change approaches zero, then it is determined that the vehicle is in a long downhill scenario. During a long downhill, due to the effect of gravity, the vehicle may maintain a constant speed or accelerate downhill. At this time, the driver usually reduces the throttle input or even completely releases the throttle, and performs staged fueling, causing the throttle change to approach zero. At the same time, in order to keep the vehicle speed stable, the engine may reduce power output by reducing the speed, but it will still be higher than the idle speed to maintain the basic operation of the vehicle. It can accurately determine whether the vehicle is in a long downhill scenario, thereby providing an important basis for subsequent strategies.

[0058] In the second aspect, the embodiment of the present application also provides a post-processing regeneration target temperature control device, which includes: a monitoring module, which is used to monitor the actual regeneration temperature Tr of the post-processing system in real time, confirm whether the vehicle has entered the regeneration demand stage, and verify whether the regeneration target temperature has reached the preset maximum regeneration target temperature value Ta; a judgment module, which is used to lower the regeneration target temperature to the set regeneration target temperature value Ta1 if it is judged that the vehicle has entered the regeneration demand stage, the regeneration target temperature has reached the maximum regeneration target temperature value Ta, and the actual regeneration temperature Tr is less than or equal to the preset regeneration target temperature threshold value Ttr, and then control the regeneration target temperature to climb again to the maximum regeneration target temperature value Ta according to the climbing curve logic of the original regeneration target temperature.

[0059] In combination with the second aspect, in one embodiment, the monitoring module is also used to monitor whether the vehicle is in a complex driving scenario; the judgment module is also used to monitor whether the vehicle is in a complex driving scenario; if it is judged that the vehicle enters the regeneration demand stage, the regeneration target temperature has reached the maximum regeneration target temperature value Ta, the actual regeneration temperature Tr is greater than the preset regeneration target temperature threshold value Ttr, and the vehicle is in a complex driving scenario, the regeneration target temperature value is lowered to the set regeneration target temperature value Ta1, and then according to the climbing curve logic of the original regeneration target temperature, it climbs again to the maximum regeneration target temperature value Ta.

[0060] In combination with the second aspect, in one implementation, the monitoring module is also used to monitor the vehicle speed, engine speed and throttle changes; the judgment module is also used to judge that the vehicle is in a congested road scenario if the vehicle speed is 0, the engine speed is idling and the throttle changes fluctuate greatly for multiple times.

[0061] Among them, the functional implementation of each module in the above-mentioned post-processing regeneration target temperature control device corresponds to the various steps in the above-mentioned post-processing regeneration target temperature control method embodiment, and its functions and implementation processes will not be repeated here one by one.

[0062] In a third aspect, an embodiment of the present application provides a post-processing regeneration target temperature control device, which may be a personal computer (PC), a laptop computer, a server, or other device with data processing capabilities.

[0063] Reference Figure 5 , Figure 5 Schematic diagram of the hardware structure of the post-processing regeneration target temperature control device involved in the embodiment of the present application. In the embodiment of the present application, the post-processing regeneration target temperature control device may include a processor, a memory, a communication interface and a communication bus.

[0064] The communication bus may be of any type and is used to interconnect the processor, the memory, and the communication interface.

[0065] The communication interface includes an input / output (I / O) interface, a physical interface, and a logical interface, etc., which are used to interconnect the devices inside the post-processing regeneration target temperature control device, and an interface used to interconnect the post-processing regeneration target temperature control device with other devices (such as other computing devices or user devices). The physical interface can be an Ethernet interface, an optical fiber interface, an ATM interface, etc.; the user device can be a display, a keyboard, etc.

[0066] The memory can be various types of storage media, such as random access memory (RAM), read-only memory (ROM), non-volatile RAM (NVRAM), flash memory, optical storage, hard disk, programmable ROM (PROM), erasable PROM (EPROM), electrically erasable PROM (EEPROM), etc.

[0067] The processor may be a general-purpose processor, and the general-purpose processor may call the post-processing regeneration target temperature control program stored in the memory, and execute the post-processing regeneration target temperature control method provided in the embodiment of the present application. For example, the general-purpose processor may be a central processing unit (CPU). The method executed when the post-processing regeneration target temperature control program is called may refer to the various embodiments of the post-processing regeneration target temperature control method of the present application, which will not be repeated here.

[0068] Those skilled in the art will understand that Figure 5 The hardware structure shown in the figure does not constitute a limitation on the present application, and may include more or fewer components than shown in the figure, or combine certain components, or arrange the components differently.

[0069] In a fourth aspect, an embodiment of the present application also provides a computer-readable storage medium.

[0070] A post-processing regeneration target temperature control program is stored on a readable storage medium of the present application, wherein when the post-processing regeneration target temperature control program is executed by a processor, the steps of the post-processing regeneration target temperature control method as described above are implemented.

[0071] Among them, the method implemented when the post-treatment regeneration target temperature control program is executed can refer to the various embodiments of the post-treatment regeneration target temperature control method of the present application, and will not be repeated here.

[0072] It should be noted that the serial numbers of the above-mentioned embodiments of the present application are only for description and do not represent the advantages or disadvantages of the embodiments.

[0073] The terms "including" and "having" and any variations thereof in the specification and claims of this application and the above-mentioned drawings are intended to cover non-exclusive inclusions. For example, a process, method, system, product or device that includes a series of steps or units is not limited to the listed steps or units, but optionally includes steps or units that are not listed, or optionally includes other steps or units inherent to these processes, methods, products or devices. The terms "first", "second" and "third" are used to distinguish different objects, etc., and do not represent a sequence, nor do they limit "first", "second" and "third" to different types.

[0074] In the description of the embodiments of the present application, "exemplary", "for example" or "for example" are used to indicate examples, illustrations or descriptions. Any embodiment or design described as "exemplary", "for example" or "for example" in the embodiments of the present application should not be interpreted as being more preferred or more advantageous than other embodiments or designs. Specifically, the use of words such as "exemplary", "for example" or "for example" is intended to present related concepts in a specific way.

[0075] In the description of the embodiments of the present application, unless otherwise specified, “ / ” means or, for example, A / B can mean A or B; the “and / or” in the text is merely a description of the association relationship of associated objects, indicating that three relationships may exist, for example, A and / or B can mean: A exists alone, A and B exist at the same time, and B exists alone. In addition, in the description of the embodiments of the present application, “multiple” refers to two or more than two.

[0076] In some processes described in the embodiments of the present application, multiple operations or steps that appear in a specific order are included, but it should be understood that these operations or steps may not be executed in the order in which they appear in the embodiments of the present application or in parallel, and the sequence number of the operation is only used to distinguish the different operations, and the sequence number itself does not represent any execution order. In addition, these processes may include more or fewer operations, and these operations or steps may be executed in sequence or in parallel, and these operations or steps may be combined.

[0077] Through the description of the above implementation methods, those skilled in the art can clearly understand that the above-mentioned embodiment methods can be implemented by means of software plus a necessary general hardware platform, and of course by hardware, but in many cases the former is a better implementation method. Based on such an understanding, the technical solution of the present application is essentially or the part that contributes to the prior art can be embodied in the form of a software product, which is stored in a storage medium (such as ROM / RAM, disk, CD) as described above, and includes a number of instructions for a terminal device to execute the methods described in each embodiment of the present application.

[0078] The above are only preferred embodiments of the present application, and are not intended to limit the patent scope of the present application. Any equivalent structure or equivalent process transformation made using the contents of the present application specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present application.

Claims

1. A post-processing regeneration target temperature control method, characterized in that: The post-processing regeneration target temperature control method comprises: Monitor the actual regeneration temperature Tr of the post-processing system in real time, confirm whether the vehicle has entered the regeneration demand phase, and verify whether the regeneration target temperature has reached the preset maximum regeneration target temperature value Ta; If it is determined that the vehicle enters the regeneration demand stage, the regeneration target temperature has reached the maximum regeneration target temperature value Ta, and the actual regeneration temperature Tr is less than or equal to the preset regeneration target temperature threshold value Ttr, the regeneration target temperature is lowered to the set regeneration target temperature value Ta1, and then the regeneration target temperature is controlled according to the climbing curve logic of the original regeneration target temperature to climb again to the maximum regeneration target temperature value Ta.

2. The post-treatment regeneration target temperature control method according to claim 1, characterized in that: After the actual regeneration temperature Tr of the post-processing system is monitored in real time, whether the vehicle has entered the regeneration demand phase, and whether the regeneration target temperature has reached a preset maximum regeneration target temperature value Ta, the following steps are included: Monitor whether the vehicle is in a complex driving scenario; If it is determined that the vehicle enters the regeneration demand stage, the regeneration target temperature has reached the maximum regeneration target temperature value Ta, the actual regeneration temperature Tr is greater than the preset regeneration target temperature threshold value Ttr, and the vehicle is in a complex driving scenario, the regeneration target temperature value is lowered to the set regeneration target temperature value Ta1, and then climbed again to the maximum regeneration target temperature value Ta according to the climbing curve logic of the original regeneration target temperature.

3. The post-treatment regeneration target temperature control method according to claim 2, characterized in that: The monitoring of whether the vehicle is in a complex driving scenario includes: Monitor vehicle speed, engine speed and throttle changes; If the vehicle speed is 0 multiple times, the engine speed is idling, and the throttle fluctuates greatly, it is determined that the vehicle is in a congested road scenario.

4. The post-treatment regeneration target temperature control method according to claim 2, characterized in that: The monitoring of whether the vehicle is in a complex driving scenario includes: Monitor vehicle speed, engine speed and throttle changes; If the monitored vehicle speed is uniform, the engine speed is slowly decreasing but is higher than the idle speed, and the throttle change is approaching zero, it is determined that the vehicle is in a long downhill scenario.

5. The post-treatment regeneration target temperature control method according to claim 1, characterized in that: Before the actual regeneration temperature Tr of the post-processing system is monitored in real time, whether the vehicle has entered the regeneration demand phase, and whether the regeneration target temperature has reached a preset maximum regeneration target temperature value Ta, the following steps are included: The regeneration target temperature threshold value Ttr and the regeneration target temperature value Ta1 are calibrated; wherein the regeneration target temperature threshold value Ttr is smaller than the regeneration target temperature value Ta1.

6. A post-processing regeneration target temperature control device, characterized in that: The post-processing regeneration target temperature control device comprises: A monitoring module is used to monitor the actual regeneration temperature Tr of the post-processing system in real time, confirm whether the vehicle has entered the regeneration demand phase, and verify whether the regeneration target temperature has reached a preset maximum regeneration target temperature value Ta; The judgment module is used to lower the regeneration target temperature to the set regeneration target temperature value Ta1 if it is judged that the vehicle enters the regeneration demand stage, the regeneration target temperature has reached the maximum regeneration target temperature value Ta, and the actual regeneration temperature Tr is less than or equal to the preset regeneration target temperature threshold value Ttr, and then control the regeneration target temperature to climb again to the maximum regeneration target temperature value Ta according to the climbing curve logic of the original regeneration target temperature.

7. The post-treatment regeneration target temperature control device according to claim 6, characterized in that: The monitoring module is also used to monitor whether the vehicle is in a complex driving scenario; The judgment module is also used to monitor whether the vehicle is in a complex driving scenario; if it is judged that the vehicle enters the regeneration demand stage, the regeneration target temperature has reached the maximum regeneration target temperature value Ta, the actual regeneration temperature Tr is greater than the preset regeneration target temperature threshold value Ttr, and the vehicle is in a complex driving scenario, the regeneration target temperature value is lowered to the set regeneration target temperature value Ta1, and then climbed again to the maximum regeneration target temperature value Ta according to the climbing curve logic of the original regeneration target temperature.

8. The post-treatment regeneration target temperature control device according to claim 7, characterized in that: The monitoring module is also used to monitor vehicle speed, engine speed and throttle changes; The judgment module is also used to judge that the vehicle is in a congested road section if the vehicle speed is 0 for many times, the engine speed is idling and the throttle changes fluctuate greatly.

9. A post-processing regeneration target temperature control device, characterized in that: The post-treatment regeneration target temperature control device includes a processor, a memory, and a post-treatment regeneration target temperature control program stored in the memory and executable by the processor, wherein when the post-treatment regeneration target temperature control program is executed by the processor, the steps of the post-treatment regeneration target temperature control method as described in any one of claims 1 to 5 are implemented.

10. A computer-readable storage medium, characterized in that: The computer-readable storage medium stores a post-treatment regeneration target temperature control program, wherein when the post-treatment regeneration target temperature control program is executed by a processor, the steps of the post-treatment regeneration target temperature control method according to any one of claims 1 to 5 are implemented.

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