Particulate filter regeneration system, method, controller, and storage medium

Abstract

The application discloses a kind of particle trap regeneration system, method, controller and storage medium, belong to vehicle technical field.The system is not less than the first limit value and less than the second limit value in the case where carbon load, first by engine controller to judge whether particle trap satisfies first regeneration condition, when particle trap satisfies first regeneration condition, engine controller sends first regeneration instruction to hybrid controller, hybrid controller is based on the first speed limit value and the first torque limit value in first regeneration instruction, determine first speed and first torque, send first speed and first torque to engine controller, engine controller is based on first speed and first torque, control particle trap regeneration.Visible, the system is through engine controller and hybrid controller mutual coordination, make engine continue to run in first regeneration operating mode, to guarantee the sufficient combustion of carbon particles, to realize the regeneration of particle trap.

Description

Technical Field

[0001] This application relates to the field of vehicle technology, and in particular to a particulate filter regeneration system, method, controller and storage medium. Background Technology

[0002] Particulate filters capture exhaust particles, such as carbon particles, produced during vehicle engine combustion to reduce emissions. More and more vehicles are now equipped with particulate filters. However, when the total amount of carbon particles accumulated in the particulate filter becomes excessive, reaching a certain carbon load limit, it can lead to decreased vehicle power and increased fuel consumption. In such cases, the carbon particles in the particulate filter need to be re-burned to regenerate the filter.

[0003] In related technologies, the engine controller mainly monitors the status of the particulate filter and controls its regeneration based on the status of the particulate filter.

[0004] However, the methods in related technologies are mainly applicable to traditional fuel vehicles and not to hybrid vehicles. This is because, considering the impact on fuel consumption, the engine of a hybrid vehicle frequently enters start-stop mode, which is not conducive to the combustion of carbon particles. Therefore, how to achieve the regeneration of the particulate filter for hybrid vehicles is an urgent problem to be solved in this field. Summary of the Invention

[0005] This application provides a particulate filter regeneration system, method, controller, and storage medium, which can realize the regeneration of particulate filters in hybrid vehicles. The technical solution is as follows:

[0006] On one hand, a particulate filter regeneration system is provided, the system comprising: an engine controller and a hybrid controller; the engine controller and the hybrid controller are electrically connected and located in the same hybrid vehicle;

[0007] The engine controller is used to monitor the carbon load of the particulate filter; when the carbon load is not less than a first limit and less than a second limit, it acquires a first regeneration parameter; the particulate filter is located in the hybrid vehicle;

[0008] The engine controller is further configured to send a first regeneration command to the hybrid controller when it is determined, based on the first regeneration parameters, that the particulate filter meets the first regeneration conditions; the first regeneration command carries a first speed limit and a first torque limit, the first regeneration command being used to indicate that the engine is in a first regeneration condition, and the engine speed in the first regeneration condition does not exceed the first speed limit and the torque does not exceed the first torque limit;

[0009] The hybrid controller is configured to determine a first rotating speed and a first torque of the engine in the first regeneration working condition based on the first rotating speed limit value and the first torque limit value, and send the first rotating speed and the first torque to the engine controller.

[0010] The engine controller is further configured to control the DPF regeneration based on the first rotating speed and the first torque.

[0011] In a possible implementation, the engine controller is further configured to acquire a second regeneration parameter when the carbon loading is not less than the second limit value.

[0012] The engine controller is further configured to send a second regeneration instruction to the hybrid controller when it is determined that the DPF meets a second regeneration condition based on the second regeneration parameter; the second regeneration instruction carries a target rotating speed, and the second regeneration instruction is used to instruct the engine to be in a second regeneration working condition and the engine to work at the target rotating speed in the second regeneration working condition.

[0013] The hybrid controller is further configured to control the motor to drive the engine to work at the target rotating speed based on the second regeneration instruction, and send a first notification message to the engine controller.

[0014] The engine controller is configured to control the DPF regeneration based on the first notification message.

[0015] In another possible implementation, the system further includes a regeneration device; and the regeneration device displays a regeneration option.

[0016] The engine controller is further configured to be electrically connected with the regeneration device when the carbon loading is not less than the second limit value.

[0017] The regeneration device is configured to send a parameter acquisition instruction to the engine controller in response to a triggering operation on the regeneration option.

[0018] The engine controller is further configured to acquire the second regeneration parameter based on the parameter acquisition instruction.

[0019] In another possible implementation, the engine controller is further configured to send a second rotating speed limit value and a second torque limit value to the hybrid controller when the carbon loading is not less than the second limit value; the second rotating speed limit value is less than the first rotating speed limit value, and the second torque limit value is less than the first torque limit value.

[0020] The hybrid controller is further configured to determine a second rotation speed and a second torque of the engine in the second regeneration working condition based on the second rotation speed limit value and the second torque limit value, and send the second rotation speed and the second torque to the engine controller;

[0021] The engine controller is further configured to control the engine based on the second rotation speed and the second torque.

[0022] In another possible implementation, the engine controller is further configured to adjust an air-fuel ratio and an ignition angle of the engine based on the first rotation speed and the first torque, and control the particulate filter regeneration based on the adjusted air-fuel ratio and the ignition angle.

[0023] In another possible implementation, the engine controller is further configured to monitor a carbon loading of the particulate filter during the particulate filter regeneration, and control the engine to exit the first regeneration working condition when the carbon loading is not greater than a third limit value, the third limit value being less than the first limit value, or

[0024] The engine controller is further configured to determine a first time length, and control the engine to exit the first regeneration working condition when the first time length is not less than a first preset time length, the first time length being a time length consumed by the particulate filter regeneration.

[0025] In another possible implementation, the engine controller is further configured to control the engine to enter a waiting regeneration working condition when the first time length is less than the first preset time length and the particulate filter does not meet the first regeneration condition, and control the engine to re-enter the first regeneration working condition when the particulate filter meets the first regeneration condition again during the waiting regeneration.

[0026] In another aspect, a particulate filter regeneration method is provided, and the method comprises:

[0027] The engine controller monitors a carbon loading of the particulate filter, and obtains first regeneration parameters when the carbon loading is not less than a first limit value and less than a second limit value.

[0028] The engine controller sends a first regeneration instruction to a hybrid controller when it is determined that the particulate filter meets a first regeneration condition based on the first regeneration parameters, the first regeneration instruction carrying a first rotation speed limit value and a first torque limit value, the first regeneration instruction being used to indicate that the engine is in a first regeneration working condition, and a rotation speed of the engine in the first regeneration working condition is not greater than the first rotation speed limit value and a torque of the engine is not greater than the first torque limit value.

[0029] The hybrid controller determines a first rotation speed and a first torque of the engine in the first regeneration working condition based on the first rotation speed limit value and the first torque limit value, and sends the first rotation speed and the first torque to the engine controller;

[0030] The engine controller controls the DPF regeneration based on the first rotation speed and the first torque.

[0031] In a possible implementation, the method further comprises:

[0032] The engine controller acquires a second regeneration parameter when the carbon loading is not less than the second limit value;

[0033] The engine controller sends a second regeneration instruction to the hybrid controller when it is determined that the DPF meets a second regeneration condition based on the second regeneration parameter; the second regeneration instruction carries a target rotation speed, and the second regeneration instruction is used to instruct the engine to be in a second regeneration working condition, and the engine works at the target rotation speed in the second regeneration working condition;

[0034] The hybrid controller controls the motor to drive the engine to work at the target rotation speed based on the second regeneration instruction, and sends a first notification message to the engine controller;

[0035] The engine controller controls the DPF regeneration based on the first notification message.

[0036] In another possible implementation, the engine controller acquires a second regeneration parameter when the carbon loading is not less than the second limit value, comprising:

[0037] The engine controller is electrically connected with a regeneration device when the carbon loading is not less than the second limit value; the regeneration device displays a regeneration option;

[0038] The regeneration device sends a parameter acquisition instruction to the engine controller in response to a triggering operation on the regeneration option;

[0039] The engine controller acquires the second regeneration parameter based on the parameter acquisition instruction.

[0040] In another possible implementation, the method further comprises:

[0041] The engine controller sends a second rotation speed limit value and a second torque limit value to the hybrid controller when the carbon loading is not less than the second limit value; the second rotation speed limit value is less than the first rotation speed limit value, and the second torque limit value is less than the first torque limit value;

[0042] The hybrid controller determines a second rotation speed and a second torque of the engine based on the second rotation speed limit value and the second torque limit value, and sends the second rotation speed and the second torque to the engine controller;

[0043] The engine controller controls the engine to operate based on the second rotation speed and the second torque.

[0044] In another possible implementation, the engine controller controls the particulate filter regeneration based on the first rotation speed and the first torque, including:

[0045] The engine controller adjusts an air-fuel ratio and an ignition angle of the engine based on the first rotation speed and the first torque, and controls the particulate filter regeneration based on the adjusted air-fuel ratio and ignition angle.

[0046] In another possible implementation, the method further includes:

[0047] The engine controller monitors a carbon load of the particulate filter during the particulate filter regeneration, and controls the engine to exit the first regeneration operating mode when the carbon load is not greater than a third limit value, the third limit value being less than the first limit value; or,

[0048] The engine controller determines a first time length, and controls the engine to exit the first regeneration operating mode when the first time length is not less than a first preset time length, the first time length being a time length consumed by the particulate filter regeneration.

[0049] In another possible implementation, the method further includes:

[0050] The engine controller controls the engine to enter a waiting regeneration operating mode when the first time length is less than the first preset time length and the particulate filter does not meet the first regeneration condition, and controls the engine to re-enter the first regeneration operating mode when the particulate filter meets the first regeneration condition during the waiting regeneration.

[0051] In another aspect, a controller is provided, including a processor and a memory, the memory storing at least one program code, the at least one program code being loaded and executed by the processor to implement the particulate filter regeneration method of the above engine controller or hybrid controller.

[0052] In another aspect, a computer-readable storage medium is provided, the computer-readable storage medium having stored therein at least one program code, the at least one program code being loadable and executable by a processor to implement the particulate filter regeneration method according to any one of the preceding aspects.

[0053] In another aspect, a computer program product is provided, the computer program product having stored therein at least one program code, the at least one program code being loadable and executable by a processor to implement the particulate filter regeneration method according to any one of the preceding aspects.

[0054] The particulate filter regeneration system provided by the embodiments of the present application first determines whether the particulate filter meets the first regeneration condition through the engine controller when the carbon load is not less than the first limit value and less than the second limit value, and when the particulate filter meets the first regeneration condition, the engine controller sends the first regeneration instruction to the hybrid controller, the hybrid controller determines the first rotation speed and the first torque based on the first rotation speed limit value and the first torque limit value in the first regeneration instruction, and sends the first rotation speed and the first torque to the engine controller, and the engine controller controls the particulate filter regeneration based on the first rotation speed and the first torque. It can be seen that the system makes the engine continue to operate in the first regeneration working condition through the mutual coordination of the engine controller and the hybrid controller, so as to ensure the sufficient combustion of carbon particles, thereby realizing the regeneration of the particulate filter.

[0055] It should be understood that the foregoing general description and the following detailed description are only exemplary and are not limiting of the present disclosure. BRIEF DESCRIPTION OF DRAWINGS

[0056] Figure 1 is a schematic diagram of a particulate filter regeneration system provided by the embodiments of the present application;

[0057] Figure 2 is a flowchart of a particulate filter regeneration method provided by the embodiments of the present application;

[0058] Figure 3 is a schematic diagram of active regeneration of a particulate filter provided by the embodiments of the present application;

[0059] Figure 4 is a schematic diagram of service regeneration of a particulate filter provided by the embodiments of the present application;

[0060] Figure 5 is a schematic diagram of interaction between an engine controller and a hybrid controller provided by the embodiments of the present application;

[0061] Figure 6 is a structural block diagram of a controller provided by the embodiments of the present application. DETAILED DESCRIPTION

[0062] In order to make the technical solutions and advantages of the present application clearer, the embodiments of the present application are described in further detail below.

[0063] The terms "first", "second", "third", and "fourth" and the like in the description and claims of the present application and the accompanying drawings are used to distinguish different objects, and are not used to describe a particular order. In addition, the terms "include" and "have" and any variations thereof are intended to cover non-exclusive inclusion. For example, a process, method, system, product, or device that includes a series of steps or units is not limited to the listed steps or units, but can optionally include steps or units not listed, or can optionally include other steps or units inherent to the process, method, product, or device.

[0064] It should be noted that the information (including but not limited to user device information, user personal information, etc.), data (including but not limited to data for analysis, stored data, displayed data, etc.), and signals involved in the present application are all authorized by the user or fully authorized by all parties, and the collection, use, and processing of related data need to comply with relevant laws, regulations, and standards in relevant countries and regions. For example, the regeneration instructions, parameter acquisition instructions, etc. involved in the present application are obtained under full authorization.

[0065] The embodiments of the present application provide a particulate filter regeneration system, referring to Figure 1 The system comprises an engine controller 101 and a hybrid controller 102; the engine controller 101 and the hybrid controller 102 are electrically connected and located in the same hybrid vehicle;

[0066] The engine controller 101 is configured to monitor the carbon load of the particulate filter, and obtain first regeneration parameters when the carbon load is not less than a first limit value and less than a second limit value; the particulate filter is located in the hybrid vehicle;

[0067] The engine controller 101 is further configured to send a first regeneration instruction to the hybrid controller 102 when it is determined that the particulate filter meets first regeneration conditions based on the first regeneration parameters; the first regeneration instruction carries a first speed limit value and a first torque limit value, and the first regeneration instruction is used to indicate that the engine is in a first regeneration working condition, and the speed of the engine in the first regeneration working condition does not exceed the first speed limit value, and the torque of the engine in the first regeneration working condition does not exceed the first torque limit value;

[0068] The hybrid controller 102 is configured to determine a first speed and a first torque of the engine in the first regeneration working condition based on the first speed limit value and the first torque limit value, and send the first speed and the first torque to the engine controller 101;

[0069] The engine controller 101 is further configured to control the particulate filter regeneration based on the first rotation speed and the first torque.

[0070] In the embodiments of the present application, the hybrid vehicle refers to a hybrid electric vehicle, that is, a vehicle using a traditional engine and a motor as a power source, wherein the fuel of the engine can be gasoline, diesel, or other fuels such as compressed natural gas, propane, and ethanol fuel, etc., which are not limited specifically.

[0071] The hybrid vehicle is provided with an engine controller 101 and a hybrid controller 102, and the engine controller 101 and the hybrid controller 102 are electrically connected. The hybrid controller 102 refers to a hybrid controller, which is the center of energy management and torque coordination of the hybrid vehicle. In addition, the electrical connection can be circuit connection or wireless connection, which is not limited specifically. If the electrical connection is circuit connection, the connection mode can be cable connection, and if the electrical connection is wireless connection, the connection mode can be infrared connection, wireless local area network, and WiFi (Wireless Fidelity, Wireless Fidelity) network connection. In the embodiments of the present application, this is not limited specifically.

[0072] In the embodiments of the present application, if the carbon load is less than the first limit value, the regeneration of the particulate filter is not required. If the carbon load is not less than the first limit value and less than the second limit value, the particulate filter is actively regenerated. If the carbon load is not less than the second limit value, the particulate filter is passively regenerated, that is, service regeneration.

[0073] In a possible implementation, the process of the engine controller 101 controlling the passive regeneration of the particulate filter can be:

[0074] The engine controller 101 is further configured to acquire a second regeneration parameter if the carbon load is not less than the second limit value.

[0075] The engine controller 101 is further configured to send a second regeneration instruction to the hybrid controller 102 if it is determined that the particulate filter meets the second regeneration condition based on the second regeneration parameter, wherein the second regeneration instruction carries a target rotation speed, and the second regeneration instruction is used to instruct the engine to be in a second regeneration working condition and the engine works at the target rotation speed in the second regeneration working condition.

[0076] The hybrid controller 102 is further configured to control the motor to drive the engine to work at the target rotation speed based on the second regeneration instruction, and send a first notification message to the engine controller 101.

[0077] The engine controller 101 is configured to control the particulate filter regeneration based on the first notification message.

[0078] In a possible implementation, the engine controller 101 can obtain the second regeneration parameter through the regeneration device 103. Correspondingly, the system further includes: the regeneration device 103; and the regeneration device 103 displays the regeneration option.

[0079] The engine controller 101 is further configured to be electrically connected with the regeneration device 103 in a case where the carbon loading is not less than the second limit value.

[0080] The regeneration device 103 is configured to send a parameter acquisition instruction to the engine controller 101 in response to a triggering operation on the regeneration option.

[0081] The engine controller 101 is further configured to obtain the second regeneration parameter based on the parameter acquisition instruction.

[0082] In a possible implementation, the engine controller 101 is further configured to send the second speed limit value and the second torque limit value to the hybrid controller 102 in a case where the carbon loading is not less than the second limit value; the second speed limit value is less than the first speed limit value, and the second torque limit value is less than the first torque limit value.

[0083] The hybrid controller 102 is further configured to determine the second speed and the second torque of the engine based on the second speed limit value and the second torque limit value, and send the second speed and the second torque to the engine controller 101.

[0084] The engine controller 101 is further configured to control the engine to work based on the second speed and the second torque.

[0085] In a possible implementation, the process of controlling the engine to perform the particulate filter regeneration by the engine controller 101 can be as follows:

[0086] The engine controller 101 is further configured to adjust the air-fuel ratio and the ignition angle of the engine based on the first speed and the first torque, and control the particulate filter to regenerate based on the adjusted air-fuel ratio and the ignition angle.

[0087] In a possible implementation, when the first regeneration completion condition is met, the engine controller 101 controls the engine to exit the first regeneration working condition, and the process can be as follows:

[0088] The engine controller 101 is further configured to monitor the carbon loading of the particulate filter during the process of controlling the engine to perform the particulate filter regeneration, and control the engine to exit the first regeneration working condition in a case where the carbon loading is not greater than a third limit value, the third limit value being less than the first limit value; or,

[0089] The engine controller 101 is further configured to determine a first time length, and control the engine to exit the first regeneration working condition in a case where the first time length is not less than a first preset time length, the first time length being a time length consumed by the particulate filter regeneration.

[0090] In a possible implementation, the engine controller 101 is further configured to control the engine to enter a waiting regeneration working condition when the first time length is less than the first preset time length and the particulate filter does not satisfy the first regeneration condition; and control the engine to re-enter the first regeneration working condition when the particulate filter satisfies the first regeneration condition again during the waiting regeneration process.

[0091] The embodiment of the present application provides a particulate filter regeneration system. When the carbon load is not less than the first limit value and less than the second limit value, the engine controller is used to determine whether the particulate filter satisfies the first regeneration condition, the engine controller sends the first regeneration instruction to the hybrid controller when the particulate filter satisfies the first regeneration condition, the hybrid controller determines the first rotating speed and the first torque based on the first rotating speed limit value and the first torque limit value in the first regeneration instruction, sends the first rotating speed and the first torque to the engine controller, and the engine controller controls the particulate filter to regenerate based on the first rotating speed and the first torque. It can be seen that the engine continues to operate in the first regeneration working condition through the mutual coordination of the engine controller and the hybrid controller, so that the sufficient combustion of carbon particles is ensured, and the regeneration of the particulate filter is realized.

[0092] Figure 2 The embodiment of the present application provides a particulate filter regeneration method, which is executed by the engine controller and the hybrid controller, and the method is described with reference to Figure 2 The method comprises the following steps.

[0093] Step 201: The engine controller monitors the carbon load of the particulate filter.

[0094] The engine controller can monitor the carbon load of the particulate filter in real time, or monitor the carbon load of the particulate filter periodically. If the engine controller monitors the carbon load of the particulate filter periodically, the period can be set and changed as required, and in the embodiment of the present application, the period is not limited specifically.

[0095] In the embodiment of the present application, the carbon load of the particulate filter can be divided into three intervals, i.e., a first interval, a second interval and a third interval, as shown in Table 1. In the first interval, the carbon load is less than the first limit value, in which case the engine normally responds to the demand and the particulate filter does not need to be regenerated. In the second interval, the carbon load is not less than the first limit value and less than the second limit value, in which case the engine can normally operate and the particulate filter does not need to be regenerated, or the particulate filter actively regenerates, during which the engine does not stop but the rotating speed and the torque are limited to a certain extent. In the third interval, the carbon load is not less than the second limit value, in which case the particulate filter needs to be serviced and regenerated, during which the rotating speed and the torque of the engine are further limited.

[0096] Table 1

[0097]

[0098] Based on this, when the engine controller monitors that the carbon load is not less than the first limit value and less than the second limit value, step 202 is performed. When the engine controller monitors that the carbon load is not less than the second limit value, step 206 is performed. Wherein, the engine controller can perform steps 202-205 first, or perform steps 206-209 first, which is not specifically limited.

[0099] Step 202: The engine controller acquires the first regeneration parameter when the carbon load is not less than the first limit value and less than the second limit value.

[0100] In this step, the first regeneration parameter includes: the working temperature of the particulate filter, the remaining oil amount, the remaining power amount, and the vehicle speed.

[0101] In a possible implementation, the process in which the engine controller acquires the remaining power amount can be: the hybrid controller determines the remaining power amount of the battery in real time or periodically, and then sends the remaining power amount to the engine controller, so that the engine controller acquires the remaining power amount.

[0102] In a possible implementation, the engine controller can acquire the working temperature of the particulate filter through a temperature sensor. The process can be: the engine controller sends a first temperature acquisition instruction to a first temperature sensor and a second temperature acquisition instruction to a second temperature sensor; the first temperature sensor acquires a first temperature based on the first temperature acquisition instruction and sends the first temperature to the engine controller; the second temperature sensor acquires a second temperature based on the second temperature acquisition instruction and sends the second temperature to the engine controller. The engine controller takes the average of the first temperature and the second temperature as the working temperature, or takes the smaller one of the first temperature and the second temperature as the working temperature. Wherein, the first temperature sensor is arranged at the inlet of the particulate filter, and the second temperature sensor is arranged at the outlet of the particulate filter.

[0103] In a possible implementation, the engine controller can acquire the remaining oil amount through a liquid level sensor and acquire the vehicle speed through a wheel speed sensor. Wherein, the engine controller acquires the remaining oil amount and the vehicle speed in the same way as it acquires the working temperature of the particulate filter, which will not be repeated here. Of course, the engine controller can also acquire the working temperature of the particulate filter, the remaining oil amount, the remaining power amount, and the vehicle speed through other ways, which are not specifically limited.

[0104] After the engine controller obtains the first regeneration parameter, it is determined whether the first regeneration parameter meets the first regeneration condition, that is, whether the working temperature of the particulate filter is within the first temperature range, whether the remaining oil amount is greater than the first oil amount limit value, whether the remaining electric quantity is greater than the first electric quantity limit value, and whether the vehicle speed is greater than the first speed limit value. If the working temperature of the particulate filter is within the first temperature range, the remaining oil amount is greater than the first oil amount limit value, the remaining electric quantity is greater than the first electric quantity limit value, and the vehicle speed is greater than the first speed limit value, the engine controller determines that the first regeneration parameter meets the first regeneration condition, and step 203 is performed.

[0105] In the embodiment of the application, when the carbon load is not less than the first limit value and less than the second limit value, an icon of the regeneration demand level 1 can be displayed on the instrument panel of the hybrid vehicle to notify the user, so that the user knows that the particulate filter needs to be actively regenerated.

[0106] Step 203: The engine controller sends a first regeneration instruction to the hybrid controller when it is determined that the particulate filter meets the first regeneration condition based on the first regeneration parameter.

[0107] The first regeneration instruction carries the first speed limit value and the first torque limit value, and is used to instruct the engine to be in the first regeneration working condition, and the speed of the engine in the first regeneration working condition does not exceed the first speed limit value and the torque does not exceed the first torque limit value. In the first regeneration working condition, the engine is prohibited to stop, but the speed and the torque are limited.

[0108] In addition, the engine controller can determine a regeneration interval state according to the first limit value and the second limit value, and carry the regeneration interval state in the first regeneration instruction to instruct the engine to be in the first regeneration working condition, so that the hybrid controller can determine that the engine is currently in the first regeneration working condition according to the regeneration interval state after receiving the first regeneration instruction.

[0109] In the embodiment of the application, the engine continues to operate in the active regeneration working condition, which can ensure sufficient combustion of carbon particles. Although the speed and the torque of the engine are limited, this can ensure safe operation of the engine during active regeneration.

[0110] Step 204: The hybrid controller determines the first speed and the first torque of the engine in the first regeneration working condition based on the first speed limit value and the first torque limit value, and sends the first speed and the first torque to the engine controller.

[0111] The hybrid controller can determine the speed and torque of the engine according to the current speed of the hybrid vehicle, and if the speed is less than a first speed limit and the torque is less than a first torque limit, the hybrid controller sends the speed and torque to the engine controller as the first speed and the first torque, respectively. If the speed is not less than the first speed limit and the torque is not less than the first torque limit, the hybrid controller sends the first speed limit as the first speed and the first torque limit as the first torque to the engine controller.

[0112] Step 205: The engine controller controls the particulate filter regeneration based on the first speed and the first torque.

[0113] The engine controller adjusts the air-fuel ratio and the ignition angle of the engine based on the first speed and the first torque, and controls the particulate filter regeneration based on the adjusted air-fuel ratio and the ignition angle. The air-fuel ratio refers to the ratio of air to fuel.

[0114] The engine controller causes the fuel to burn based on the adjusted air-fuel ratio and the ignition angle, and the heat generated by the fuel combustion enters the particulate filter, causing the carbon particles in the particulate filter to burn again, thereby achieving regeneration of the particulate filter.

[0115] In the embodiments of the present application, the engine controller also monitors the carbon load of the particulate filter during the active regeneration of the particulate filter. If the carbon load is not greater than a third limit, the engine controller determines that the particulate filter meets the first regeneration completion condition, controls the engine to exit the first regeneration condition, and the third limit is less than the first limit; or determines a first time length, and if the first time length is not less than a first preset time length, determines that the particulate filter meets the first regeneration completion condition and controls the engine to exit the first regeneration condition; wherein the first time length is the time length consumed by the regeneration of the particulate filter.

[0116] It should be noted that during the active regeneration of the particulate filter, the engine controller updates the first regeneration parameter in real time or periodically, and if the first regeneration parameter does not meet the first regeneration condition, the engine controller can control the engine to enter the waiting regeneration condition; during the waiting regeneration, if the first regeneration parameter meets the first regeneration condition again, the engine controller controls the engine to re-enter the first regeneration condition, see Figure 3 .

[0117] Step 206: The engine controller obtains the second regeneration parameter if the carbon load is not less than the second limit.

[0118] If the carbon load is not less than the second limit value, in the embodiment of the present application, when the carbon load is not less than the second limit value, it means that the carbon load is relatively large, in this case, active regeneration has certain risk, and service regeneration can be performed. Correspondingly, the icon of the regeneration demand level 2 can be displayed on the instrument panel of the hybrid vehicle to inform the user, so that the user drives the vehicle to the vehicle 4S service shop or vehicle repair shop for service regeneration of the particulate filter.

[0119] Due to the relatively large carbon load, in order to ensure the safe operation of the engine, the engine controller can send a second speed limit value and a second torque limit value to the hybrid controller, the second speed limit value is less than the first speed limit value, and the second torque limit value is less than the first torque limit value. The hybrid controller can determine a second speed and a second torque of the engine based on the second speed limit value and the second torque limit value, and send the second speed and the second torque to the engine controller. The engine controller controls the engine to work based on the second speed and the second torque.

[0120] As can be seen, before the service regeneration of the particulate filter, the engine can work based on the second speed and the second torque, so that the user can drive the hybrid vehicle to the vehicle 4S service shop or vehicle repair shop for service regeneration of the particulate filter.

[0121] In the embodiment of the present application, when the engine controller performs service regeneration, the second regeneration parameter is first acquired. The engine controller can directly acquire the second regeneration parameter, or can acquire the second regeneration parameter only when the parameter acquisition instruction of the regeneration device is received.

[0122] If the engine controller acquires the second regeneration parameter when the parameter acquisition instruction of the regeneration device is received, the process can be: electrically connecting the engine controller with the regeneration device, the application program is installed on the regeneration device, and in response to logging into the application program, the regeneration device displays the main interface of the application program, and the main interface displays the regeneration option. In response to the triggering operation of the regeneration option, the regeneration device sends a parameter acquisition instruction to the engine controller; the engine controller acquires the second regeneration parameter based on the parameter acquisition instruction.

[0123] The second regeneration parameter includes: the working temperature of the particulate filter, the remaining oil amount, the remaining electric quantity, the water temperature, the pedal opening degree, the gear, the vehicle speed, and whether the engine is started. In addition, the process of acquiring the second regeneration parameter by the engine controller is the same as that of acquiring the first regeneration parameter, which will not be repeated here.

[0124] After the engine controller obtains the second regeneration parameter, it is determined whether the second regeneration parameter meets the second regeneration condition, that is, whether the working temperature of the particulate filter is within the second temperature range, whether the remaining oil amount is greater than the second oil amount limit value, whether the remaining electric quantity is greater than the second electric quantity limit value, whether the vehicle speed is 0, whether the pedal opening degree is 0, whether the gear is in the parking gear, whether the water temperature is greater than the first temperature limit value, and whether the engine is started. If the working temperature of the particulate filter is within the second temperature range, the remaining oil amount is greater than the second oil amount limit value, the remaining electric quantity is greater than the second electric quantity limit value, the vehicle speed is 0, that is, the vehicle is parked in place, the pedal opening degree is 0, the gear is in the parking gear, the water temperature is greater than the first temperature limit value, and the engine is started, the engine controller determines that the second regeneration parameter meets the second regeneration condition, and step 207 is performed.

[0125] It should be noted that the first oil amount limit value and the second oil amount limit value can be the same or different, and the first electric quantity limit value and the second electric quantity limit value can be the same or different, which are not limited in particular. Moreover, the minimum value of the first temperature range is greater than the maximum value of the second temperature range, for example, the minimum value of the first temperature range is 550℃, which can reach the temperature of secondary combustion of carbon particles, and the maximum value of the second temperature range is less than the minimum value of the first temperature range, for example, the temperature is 500℃, which does not reach the temperature of secondary combustion of carbon particles. In addition, the regeneration device can be at least one of a terminal, a tablet computer, a PC (Personal Computer) device, a smart voice interaction device, and the like, which are not limited in particular.

[0126] Step 207: The engine controller sends a second regeneration instruction to the hybrid controller when it is determined that the particulate filter meets the second regeneration condition based on the second regeneration parameter.

[0127] The second regeneration instruction carries a target speed, and is used to instruct the engine to be in a second regeneration working condition and to work at the target speed in the second regeneration working condition. In the second regeneration working condition, the engine is started, but the speed and torque are further limited.

[0128] The engine controller can determine a regeneration interval state according to the third limit value, and carry the regeneration interval state in the second regeneration instruction to instruct the engine to be in the second regeneration working condition, so that the hybrid controller can determine that the engine is currently in the second regeneration working condition according to the regeneration interval state after receiving the second regeneration instruction.

[0129] Step 208: The hybrid controller controls the motor to drive the engine to work at the target speed based on the second regeneration instruction, and sends a first notification message to the engine controller.

[0130] The hybrid controller obtains the target rotating speed from the second regeneration instruction, and sends the target rotating speed to the motor controller. The motor controller controls the motor to drive the engine to work at the target rotating speed based on the target rotating speed. After the engine works at the target rotating speed for a certain time length, that is, after the engine rotating speed is stable, the hybrid controller sends the first notification message to the engine controller.

[0131] In the embodiment of the application, the working temperature of the particulate filter in the second regeneration parameter cannot reach the temperature of the secondary combustion of carbon particles, and the regeneration of the particulate filter cannot be directly realized. However, the hybrid controller controls the motor to drive the engine to work at the target rotating speed, so as to increase the exhaust temperature of the engine, increase the heat generated by fuel combustion, and then increase the working temperature of the particulate filter, so that the working temperature reaches the temperature of the secondary combustion of carbon particles, thereby realizing the regeneration of the particulate filter.

[0132] Step 209: The engine controller controls the regeneration of the particulate filter based on the first notification message.

[0133] The engine controller adjusts the air-fuel ratio and the ignition angle of the engine based on the first notification message, and controls the regeneration of the particulate filter based on the adjusted air-fuel ratio and the ignition angle.

[0134] In the embodiment of the application, the engine controller also monitors the carbon load of the particulate filter during the service regeneration of the particulate filter. In the case that the carbon load is not greater than the third limit value, the engine controller determines that the particulate filter meets the second regeneration completion condition, and controls the engine to exit the second regeneration working condition; or determines a second time length, and in the case that the second time length is not less than the second preset time length, determines that the particulate filter meets the second regeneration completion condition, and controls the engine to exit the second regeneration working condition; wherein the second time length is the time length consumed by the service regeneration of the particulate filter. The second time length and the first time length can be the same or different, and the second preset time length and the first preset time length can be the same or different, which are not limited in this regard.

[0135] During the service regeneration of the particulate filter, the engine controller updates the second regeneration parameter in real time or periodically. If the second regeneration parameter does not meet the second regeneration condition, the engine controller controls the engine to exit the second regeneration working condition, see Figure 4 .

[0136] In the embodiment of the present application, the engine is divided into three intervals according to the size of the carbon load, and different regeneration schemes are selected according to the amount of carbon load in the particulate filter: when the carbon load is low, the normal operation of the hybrid vehicle is not affected; when the carbon load is not less than the first limit value and less than the second limit value, the intervention on the hybrid vehicle is minimized; and when the carbon load is not less than the second limit value, the regeneration process is ensured to be safe and rapid. As can be seen, the method can not only ensure the safe and reliable operation of the particulate filter, but also minimize the intervention on the normal operation of the hybrid vehicle.

[0137] Moreover, the engine controller sends the speed limit value and the torque limit value during the regeneration to the hybrid controller to ensure the safety of the engine during the carbon particle regeneration process. The engine controller sends the regeneration interval state to the hybrid controller, so that the hybrid controller knows the current working condition of the engine. As can be seen, through the interaction between the engine controller and the hybrid controller, the safety and reliability of the regeneration process are ensured. The interaction process between the engine controller and the hybrid controller can be seen in Figure 5 .

[0138] In addition, during the active regeneration and the waiting regeneration, the engine continues to operate, prolonging the combustion time of the carbon particles and thus ensuring the complete combustion of the carbon particles. During the service regeneration, the engine controller sends the target speed to the hybrid controller, and the motor is used to stabilize the speed of the engine, ensuring the complete combustion of the carbon particles.

[0139] The embodiment of the present application provides a particulate filter regeneration method. When the carbon load is not less than the first limit value and less than the second limit value, the engine controller is used to determine whether the particulate filter meets the first regeneration condition, the engine controller sends the first regeneration instruction to the hybrid controller when the particulate filter meets the first regeneration condition, the hybrid controller determines the first speed and the first torque based on the first speed limit value and the first torque limit value in the first regeneration instruction, sends the first speed and the first torque to the engine controller, and the engine controller controls the regeneration of the particulate filter based on the first speed and the first torque. As can be seen, the engine continues to operate in the first regeneration working condition through the mutual coordination of the engine controller and the hybrid controller, so as to ensure the complete combustion of the carbon particles and thus realize the regeneration of the particulate filter.

[0140] The structural block diagram of the controller can be seen in Figure 6The controller 600 can be different in configuration or performance, and can include a processor (Central Processing Units, CPU) 601 and a memory 602, wherein the memory 602 stores at least one program code, which is loaded and executed by the processor 601 to realize the operations of the engine controller or the hybrid controller in the above-mentioned particulate trap regeneration method. Of course, the controller 600 can also have a wired or wireless network interface, a keyboard, an input / output interface and other components for realizing the functions of the device, and the like, so as to perform input and output. The controller 600 can also include other components for realizing the functions of the device, which will not be described here.

[0141] In an exemplary embodiment, a computer readable storage medium is also provided, which stores at least one program code, which is loaded and executed by a processor to realize the particulate trap regeneration method in the above-mentioned embodiments.

[0142] In an exemplary embodiment, a computer program product is also provided, which stores at least one program code, which is loaded and executed by a processor to realize the particulate trap regeneration method in the above-mentioned embodiments.

[0143] Those of ordinary skill in the art can understand that all or part of the steps of the above-mentioned embodiments can be completed by hardware, or by a program instructing related hardware, which can be stored in a computer readable storage medium. The storage medium mentioned above can be a read-only memory, a magnetic disk or an optical disk, etc.

[0144] The above is only for the convenience of those skilled in the art to understand the technical solutions of the present application, and is not intended to limit the present application. Any modification, equivalent replacement, improvement, etc. within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A particulate filter regeneration system characterized by, The system comprises an engine controller, a hybrid controller and a regeneration device; the engine controller and the hybrid controller are electrically connected and located in the same hybrid vehicle; The engine controller is configured to monitor a carbon load of a particulate filter; when the carbon load is not less than a first limit value and less than a second limit value, a first regeneration parameter is obtained; the particulate filter is located in the hybrid vehicle; The engine controller is further configured to send a first regeneration instruction to the hybrid controller when it is determined that the particulate filter meets a first regeneration condition based on the first regeneration parameter; the first regeneration instruction carries a first speed limit value and a first torque limit value, and the first regeneration instruction is used to indicate that the engine is in a first regeneration working condition, and the speed of the engine in the first regeneration working condition does not exceed the first speed limit value, and the torque does not exceed the first torque limit value; The hybrid controller is configured to determine the speed and torque of the engine based on the current speed of the hybrid vehicle; if the speed is less than the first speed limit value and the torque is less than the first torque limit value, the speed and the torque are determined as a first speed and a first torque of the engine in the first regeneration working condition respectively; if the speed is not less than the first speed limit value and the torque is not less than the first torque limit value, the first speed limit value is determined as the first speed, and the first torque limit value is determined as the first torque; the first speed and the first torque are sent to the engine controller; The engine controller is further configured to control the active regeneration of the particulate filter based on the first speed and the first torque; The engine controller is further configured to send a second speed limit value and a second torque limit value to the hybrid controller when the carbon load is not less than the second limit value; the second speed limit value is less than the first speed limit value, and the second torque limit value is less than the first torque limit value; The hybrid controller is further configured to determine a second speed and a second torque of the engine based on the second speed limit value and the second torque limit value, and send the second speed and the second torque to the engine controller; The engine controller is further configured to control the engine based on the second speed and the second torque; The engine controller is further configured to be electrically connected with the regeneration device when the carbon load is not less than the second limit value, and the regeneration device displays a regeneration option; The regeneration device is configured to send a parameter acquisition instruction to the engine controller in response to a triggering operation of the regeneration option; The engine controller is further configured to obtain a second regeneration parameter based on the parameter acquisition instruction, and the second regeneration parameter comprises the working temperature, the residual oil amount, the residual electric quantity, the water temperature, the pedal opening degree, the gear position, the vehicle speed, and whether the engine is started of the particulate filter. The engine controller is further configured to determine that the particulate filter meets a second regeneration condition when it is determined that the operating temperature of the particulate filter is within a second temperature range, the remaining oil amount is greater than a second oil amount limit value, the remaining electric energy amount is greater than a second electric energy limit value, the water temperature is greater than a first temperature limit value, the pedal opening is 0, the gear is in a parking gear, the vehicle speed is 0, and the engine is started. The engine controller is further configured to send a second regeneration instruction to the hybrid controller when the particulate filter meets the second regeneration condition, the second regeneration instruction carrying a target speed, and the second regeneration instruction being used to instruct the engine to be in a second regeneration working condition and to operate at the target speed in the second regeneration working condition. The hybrid controller is further configured to control the motor to drive the engine to operate at the target speed based on the second regeneration instruction, and to send a first notification message to the engine controller. The engine controller is configured to control the particulate filter to perform regeneration based on the first notification message.

2. The system of claim 1, wherein, The engine controller is further configured to adjust an air-fuel ratio and an ignition angle of the engine based on the first speed and the first torque, and to control the particulate filter to perform regeneration based on the adjusted air-fuel ratio and ignition angle.

3. The system of claim 1, wherein, The engine controller is further configured to monitor a carbon load of the particulate filter during the regeneration of the particulate filter, and to control the engine to exit the first regeneration working condition when the carbon load is not greater than a third limit value, the third limit value being less than the first limit value. The engine controller is further configured to determine a first time length, and to control the engine to exit the first regeneration working condition when the first time length is not less than a first preset time length, the first time length being a time length consumed by the regeneration of the particulate filter.

4. The system of claim 3, wherein, The engine controller is further configured to control the engine to enter a waiting regeneration working condition when the first time length is less than the first preset time length and the particulate filter does not meet the first regeneration condition. During the waiting regeneration, if the particulate filter meets the first regeneration condition again, the engine is controlled to re-enter the first regeneration working condition.

5. A particulate filter regeneration method characterized by, The method comprises: An engine controller monitors a carbon load of a particulate filter, and acquires first regeneration parameters when the carbon load is not less than a first limit value and less than a second limit value. The engine controller sends a first regeneration instruction to a hybrid controller when it is determined that the particulate filter meets a first regeneration condition based on the first regeneration parameters, the first regeneration instruction carrying a first speed limit value and a first torque limit value, and the first regeneration instruction being used to instruct the engine to be in a first regeneration working condition and to have a speed not exceeding the first speed limit value and a torque not exceeding the first torque limit value in the first regeneration working condition. The hybrid controller determines the engine speed and torque based on the current speed of the hybrid vehicle; if the speed is less than the first speed limit and the torque is less than the first torque limit, the speed and the torque are determined as the first speed and the first torque of the engine in the first regeneration working condition; if the speed is not less than the first speed limit and the torque is not less than the first torque limit, the first speed limit is determined as the first speed and the first torque limit is determined as the first torque; the first speed and the first torque are sent to the engine controller; The engine controller controls the particulate filter active regeneration based on the first speed and the first torque; The engine controller sends the second speed limit and the second torque limit to the hybrid controller if the carbon load is not less than the second limit; the second speed limit is less than the first speed limit and the second torque limit is less than the first torque limit; The hybrid controller determines the second speed and the second torque of the engine based on the second speed limit and the second torque limit, and sends the second speed and the second torque to the engine controller; The engine controller controls the engine based on the second speed and the second torque; The engine controller is electrically connected with the regeneration device if the carbon load is not less than the second limit; the regeneration device displays a regeneration option; The regeneration device sends a parameter acquisition instruction to the engine controller in response to the triggering operation of the regeneration option; The engine controller acquires the second regeneration parameter based on the parameter acquisition instruction; the second regeneration parameter includes the working temperature of the particulate filter, the remaining oil amount, the remaining electric quantity, the water temperature, the pedal opening degree, the gear position, the vehicle speed, and whether the engine is started; The engine controller determines that the particulate filter meets the second regeneration condition if the working temperature of the particulate filter is in the second temperature range, the remaining oil amount is greater than the second oil limit, the remaining electric quantity is greater than the second electric limit, the water temperature is greater than the first temperature limit, the pedal opening degree is 0, the gear position is in the parking gear, the vehicle speed is 0, and the engine is started; the maximum value of the second temperature range cannot reach the temperature of the secondary combustion of carbon particles; The engine controller sends a second regeneration instruction to the hybrid controller if the particulate filter meets the second regeneration condition; the second regeneration instruction carries a target speed, and is used to indicate that the engine is in the second regeneration working condition and works at the target speed in the second regeneration working condition; The hybrid controller controls the motor to drive the engine to work at the target speed based on the second regeneration instruction, and sends a first notification message to the engine controller; The engine controller controls the particulate filter to serve regeneration based on the first notification message.

6. A controller characterized by comprising: The controller comprises a processor and a memory, and at least one program code is stored in the memory, and the at least one program code is loaded and executed by the processor to implement the particulate filter regeneration method as claimed in the engine controller or the hybrid controller in claim 5.

7. A computer-readable storage medium, characterized in that, At least one program code is stored in the computer readable storage medium, and the at least one program code is loaded and executed by the processor to implement the particulate filter regeneration method as claimed in claim 5.

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