Torque control system and torque control method for a hybrid engine

Abstract

The application discloses a torque control system and method of a hybrid engine. The torque control system comprises a data acquisition module for acquiring the hybrid engine speed, the maximum torque value allowed by the hybrid engine, the engine coolant temperature, the fault diagnosis state of the thermal management controller, the actual opening degree of the thermal management controller, the fault diagnosis state of the electronic water pump and the actual speed of the electronic water pump in real time, and transmitting them to a calculation execution module; the calculation execution module is used for determining the temperature limit torque value of the hybrid engine, the opening degree limit torque value of the hybrid engine and the speed limit torque value of the hybrid engine, and transmitting them to a torque output module; the torque output module is used for outputting the overall limit torque value to the hybrid engine according to the temperature limit torque value, the opening degree limit torque value and the speed limit torque value, and can comprehensively consider different fault diagnosis states to limit the output torque of the hybrid engine, thereby greatly improving the service life of the hybrid engine.

Description

Technical Field

[0001] This invention relates to the field of hybrid engine technology, and more particularly to a torque control system and torque control method for a hybrid engine. Background Technology

[0002] To maximize thermal efficiency, hybrid engines eliminate inefficient belt drives, and all accessories are primarily electric, such as thermal management controllers and electric water pumps. Compared to traditional engines, hybrid engines' cooling systems can quickly meet their temperature requirements.

[0003] Due to the extensive use of electric components, the failure rate of the cooling system will also increase. If the hybrid engine continues to operate at its current output torque when the cooling system fails, it may affect the service life of the hybrid engine. Summary of the Invention

[0004] This invention provides a torque control system and torque control method for a hybrid engine, which can comprehensively consider different fault diagnosis states to limit the output torque of the hybrid engine, effectively prevent damage to hybrid engine components, and greatly improve the service life of the hybrid engine.

[0005] According to one aspect of the present invention, a torque control system for a hybrid engine is provided, the torque control system comprising:

[0006] Data acquisition module, calculation and execution module, and torque output module;

[0007] The data acquisition module is connected to the calculation execution module. The data acquisition module is used to acquire the hybrid engine speed, the maximum allowable output torque value of the hybrid engine, the engine coolant temperature, the fault diagnosis status of the thermal management controller, the actual opening degree of the thermal management controller, the fault diagnosis status of the electric water pump, and the actual speed of the electric water pump in real time. The data acquisition module then transmits the engine coolant temperature, the fault diagnosis status of the thermal management controller, the fault diagnosis status of the electric water pump, the hybrid engine speed, the maximum allowable output torque value of the hybrid engine, the engine coolant temperature, the actual opening degree of the thermal management controller, and the actual speed of the electric water pump to the calculation execution module.

[0008] The calculation execution module is connected to the torque output module. The calculation execution module is used to receive the engine coolant temperature, the fault diagnosis status of the thermal management controller, the fault diagnosis status of the electric water pump, the hybrid engine speed, the maximum allowable torque value of the hybrid engine, the engine coolant temperature, the actual opening degree of the thermal management controller, and the actual speed of the electric water pump. Based on the engine coolant temperature, the fault diagnosis status of the thermal management controller, the fault diagnosis status of the electric water pump, the hybrid engine speed, the maximum allowable torque value of the hybrid engine, the engine coolant temperature, the actual opening degree of the thermal management controller, and the actual speed of the electric water pump, the calculation execution module determines the temperature limit torque value, the opening limit torque value, and the speed limit torque value of the hybrid engine. The calculation execution module then transmits the temperature limit torque value, the opening limit torque value, and the speed limit torque value of the hybrid engine to the torque output module.

[0009] The torque output module is used to receive the temperature torque limit value, the opening torque limit value, and the speed torque limit value of the hybrid engine, and output the overall torque limit value to the hybrid engine based on these values.

[0010] Furthermore, the calculation execution module includes a data receiving unit, a temperature calculation unit, an opening degree calculation unit, a rotational speed calculation unit, and a data transmission unit;

[0011] The first end of the data receiving unit is connected to the data acquisition module, the second end of the data receiving unit is connected to the first end of the temperature calculation unit, the second end of the data receiving unit is connected to the first end of the opening degree calculation unit, and the second end of the data receiving unit is connected to the first end of the speed calculation unit. The data receiving unit is used to receive the engine coolant temperature, the fault diagnosis status of the thermal management controller, the fault diagnosis status of the electric water pump, the hybrid engine speed, the maximum allowable torque value of the hybrid engine, the engine coolant temperature, the actual opening degree of the thermal management controller, and the actual speed of the electric water pump. It also transmits the engine coolant temperature, the hybrid engine speed, and the maximum allowable torque value of the hybrid engine to the temperature calculation unit, the fault diagnosis status of the thermal management controller, the engine coolant temperature, the maximum allowable torque value of the hybrid engine, and the actual opening degree of the thermal management controller to the opening degree calculation unit, and the fault diagnosis status of the electric water pump, the engine coolant temperature, the maximum allowable torque value of the hybrid engine, and the actual speed of the electric water pump to the speed calculation unit.

[0012] The second end of the temperature calculation unit is connected to the first end of the data transmission unit. The temperature calculation unit is used to determine the temperature limit torque value of the hybrid engine based on the engine coolant temperature, the hybrid engine speed, and the maximum allowable torque value of the hybrid engine, and transmit the temperature limit torque value of the hybrid engine to the data transmission unit.

[0013] The second end of the opening calculation unit is connected to the first end of the data transmission unit. The opening calculation unit is used to determine the opening torque limit value of the hybrid engine based on the fault diagnosis status of the thermal management controller, the engine coolant temperature, the maximum torque value that the hybrid engine can output, and the actual opening of the thermal management controller, and transmit the opening torque limit value of the hybrid engine to the data transmission unit.

[0014] The second end of the speed calculation unit is connected to the first end of the data transmission unit. The speed calculation unit is used to determine the speed limit torque value of the hybrid engine based on the fault diagnosis status of the electronic water pump, the engine coolant temperature, the maximum torque value that the hybrid engine can output, and the actual speed of the electronic water pump, and transmits the opening torque limit value of the hybrid engine to the data transmission unit.

[0015] The second end of the data transmission unit is connected to the torque output module. The data transmission unit is used to transmit the temperature torque limit value, the opening torque limit value, and the speed torque limit value of the hybrid engine to the torque output module.

[0016] Furthermore, the temperature calculation unit is used for:

[0017] The engine coolant temperature is compared with a first preset value and a second preset value. Based on the comparison result, the temperature limit torque value of the hybrid engine is determined in combination with the hybrid engine speed and the maximum allowable output torque value of the hybrid engine. The temperature limit torque value of the hybrid engine is then transmitted to the data transmission unit.

[0018] Furthermore, the temperature calculation execution unit is used for:

[0019] Compare the engine coolant temperature with a first preset value and a second preset value;

[0020] If the engine coolant temperature is less than or equal to the first preset value, the maximum allowable torque output value of the hybrid engine is determined to be the temperature limit torque value of the hybrid engine, and the temperature limit torque value of the hybrid engine is transmitted to the data transmission unit.

[0021] If the engine coolant temperature is greater than the first preset value and less than or equal to the second preset value, then the first torque limiting coefficient is determined based on the engine coolant temperature, and the temperature torque limiting value of the hybrid engine is determined by the first torque limiting coefficient and the maximum torque value that the hybrid engine is allowed to output, and the temperature torque limiting value of the hybrid engine is transmitted to the data transmission unit.

[0022] If the engine coolant temperature is greater than the second preset value, a first torque limiting coefficient is determined based on the engine coolant temperature, and a second torque limiting coefficient is determined based on the hybrid engine speed. The temperature torque limiting value of the hybrid engine is determined by the first torque limiting coefficient, the second torque limiting coefficient, and the maximum torque value that the hybrid engine is allowed to output, and the temperature torque limiting value of the hybrid engine is transmitted to the data transmission unit.

[0023] Furthermore, the opening calculation unit includes a timer, which is used to record the temperature holding time of each engine coolant temperature when the thermal management controller fails.

[0024] The opening calculation unit is used for:

[0025] When there is no fault in the thermal management controller, the maximum allowable torque value of the hybrid engine is determined to be the opening torque limit value of the hybrid engine, and the opening torque limit value of the hybrid engine is transmitted to the data transmission unit.

[0026] When the thermal management controller malfunctions, the actual opening degree of the thermal management controller is compared with the preset opening degree value. Based on the comparison result, combined with the engine coolant temperature, the maximum allowable torque value of the hybrid engine, and the temperature holding time of the current engine coolant temperature, the opening torque limit value of the hybrid engine is determined and transmitted to the data transmission unit.

[0027] Furthermore, the opening calculation unit is used for:

[0028] When the thermal management controller malfunctions, if the actual opening degree of the thermal management controller is less than or equal to the preset opening degree value, a third torque limiting coefficient is determined based on the engine coolant temperature and the temperature holding time of the current engine coolant temperature. The opening torque limiting value of the hybrid engine is determined by the third torque limiting coefficient and the maximum torque value that the hybrid engine is allowed to output, and the opening torque limiting value of the hybrid engine is transmitted to the data transmission unit.

[0029] If the actual opening degree of the thermal management controller is greater than the preset opening degree value, the fourth torque limiting coefficient is determined based on the engine coolant temperature. The opening torque limiting value of the hybrid engine is determined by the fourth torque limiting coefficient and the maximum torque value that the hybrid engine is allowed to output, and the opening torque limiting value of the hybrid engine is transmitted to the data transmission unit.

[0030] Furthermore, the speed calculation unit is used for:

[0031] When there is no fault in the electronic water pump, the maximum torque value that the hybrid engine can output is determined to be the speed limit torque value of the hybrid engine, and the speed limit torque value of the hybrid engine is transmitted to the data transmission unit.

[0032] When the electronic water pump malfunctions, the actual speed of the electronic water pump is compared with the preset speed value. Based on the comparison result, combined with the engine coolant temperature and the maximum torque value that the hybrid engine can output, the speed limit torque value of the hybrid engine is determined, and the opening torque limit value of the hybrid engine is transmitted to the data transmission unit.

[0033] Furthermore, the speed calculation unit is used for:

[0034] When the electronic water pump malfunctions, if the actual speed of the electronic water pump is less than or equal to the preset speed value, the first fixed torque value is determined to be the speed limit torque value of the hybrid engine, and the speed limit torque value of the hybrid engine is transmitted to the data transmission unit.

[0035] If the actual speed of the electric water pump is greater than the preset speed value, the fifth torque limiting coefficient is determined based on the engine coolant temperature. The speed limit torque value of the hybrid engine is determined by the fifth torque limiting coefficient and the maximum torque value that the hybrid engine can output, and the speed limit torque value of the hybrid engine is transmitted to the data transmission unit.

[0036] Furthermore, the torque output module is used for:

[0037] The temperature-limited torque value, the opening-limited torque value, and the speed-limited torque value of the hybrid engine are compared, and the overall torque limit value is determined based on the comparison results. The overall torque limit value is then output to the hybrid engine.

[0038] According to another aspect of the present invention, a torque control method for a hybrid engine is provided, applied to the torque control system of any of the hybrid engines described in the above embodiments, the torque control method comprising:

[0039] The data acquisition module acquires the hybrid engine speed, the maximum allowable torque value of the hybrid engine, the engine coolant temperature, the fault diagnosis status of the thermal management controller, the actual opening degree of the thermal management controller, the fault diagnosis status of the electric water pump, and the actual speed of the electric water pump in real time, and transmits the engine coolant temperature, the fault diagnosis status of the thermal management controller, the fault diagnosis status of the electric water pump, the hybrid engine speed, the maximum allowable torque value of the hybrid engine, the engine coolant temperature, the actual opening degree of the thermal management controller, and the actual speed of the electric water pump to the calculation execution module.

[0040] After receiving the engine coolant temperature, the fault diagnosis status of the thermal management controller, the fault diagnosis status of the electric water pump, the hybrid engine speed, the maximum allowable torque value of the hybrid engine, the engine coolant temperature, the actual opening degree of the thermal management controller, and the actual speed of the electric water pump, the calculation execution module determines the temperature limit torque value, the opening limit torque value, and the speed limit torque value of the hybrid engine based on the engine coolant temperature, the fault diagnosis status of the thermal management controller, the fault diagnosis status of the electric water pump, the hybrid engine speed, the maximum allowable torque value of the hybrid engine, the engine coolant temperature, the actual opening degree of the thermal management controller, and the actual speed of the electric water pump. Then, it transmits the temperature limit torque value, the opening limit torque value, and the speed limit torque value of the hybrid engine to the torque output module.

[0041] After receiving the temperature-limited torque value, the opening-limited torque value, and the speed-limited torque value of the hybrid engine, the torque output module outputs an overall torque limit value to the hybrid engine based on these values.

[0042] The torque control system for a hybrid engine provided in this embodiment of the invention includes: a data acquisition module, a calculation execution module, and a torque output module. The data acquisition module acquires in real time the hybrid engine speed, the maximum allowable torque value of the hybrid engine, the engine coolant temperature, the fault diagnosis status of the thermal management controller, the actual opening degree of the thermal management controller, the fault diagnosis status of the electric water pump, and the actual speed of the electric water pump. It then transmits these data to the calculation execution module. The calculation execution module calculates the torque output based on the engine coolant temperature, the fault diagnosis status of the thermal management controller, the fault diagnosis status of the electric water pump, the hybrid engine speed, the maximum allowable torque value of the hybrid engine, the engine coolant temperature, the actual opening degree of the thermal management controller, and the actual speed of the electric water pump. The temperature-limited torque, the opening-limited torque, and the speed-limited torque of the hybrid engine are determined by the engine speed, the maximum allowable torque output of the hybrid engine, the engine coolant temperature, the actual opening degree of the thermal management controller, and the actual speed of the electric water pump. These values ​​are then transmitted to the torque output module. The torque output module outputs an overall torque limit value to the hybrid engine based on these values. This allows the torque control system of the hybrid engine in this embodiment to comprehensively consider different fault diagnosis states and limit the output torque of the hybrid engine, thereby effectively preventing damage to hybrid engine components and greatly improving the service life of the hybrid engine.

[0043] It should be understood that the description in this section is not intended to identify key or essential features of the embodiments of the present invention, nor is it intended to limit the scope of the invention. Other features of the invention will become readily apparent from the following description. Attached Figure Description

[0044] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0045] Figure 1 This is a schematic diagram of the structure of a torque control system for a hybrid engine according to an embodiment of the present invention;

[0046] Figure 2 This is a schematic diagram of the structure of another torque control system for a hybrid engine provided according to an embodiment of the present invention;

[0047] Figure 3 This is a flowchart of a torque control method for a hybrid engine according to an embodiment of the present invention. Detailed Implementation

[0048] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the scope of protection of the present invention.

[0049] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this invention are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of the invention described herein can be implemented in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover a non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0050] This invention provides a torque control system for a hybrid engine. Figure 1 This is a schematic diagram of the structure of a torque control system for a hybrid engine according to an embodiment of the present invention. (Refer to...) Figure 1 The torque control system includes:

[0051] Data acquisition module 1, calculation and execution module 2, and torque output module 3;

[0052] The data acquisition module 1 is connected to the calculation execution module 2. The data acquisition module 1 is used to acquire the hybrid engine speed, the maximum allowable output torque value of the hybrid engine, the engine coolant temperature, the fault diagnosis status of the thermal management controller, the actual opening degree of the thermal management controller, the fault diagnosis status of the electric water pump, and the actual speed of the electric water pump in real time. The data acquisition module 1 transmits the engine coolant temperature, the fault diagnosis status of the thermal management controller, the fault diagnosis status of the electric water pump, the hybrid engine speed, the maximum allowable output torque value of the hybrid engine, the engine coolant temperature, the actual opening degree of the thermal management controller, and the actual speed of the electric water pump to the calculation execution module 2.

[0053] The calculation execution module 2 is connected to the torque output module 3. The calculation execution module 2 is used to receive the engine coolant temperature, the fault diagnosis status of the thermal management controller, the fault diagnosis status of the electric water pump, the hybrid engine speed, the maximum allowable torque value of the hybrid engine, the engine coolant temperature, the actual opening degree of the thermal management controller, and the actual speed of the electric water pump. Based on the engine coolant temperature, the fault diagnosis status of the thermal management controller, the fault diagnosis status of the electric water pump, the hybrid engine speed, the maximum allowable torque value of the hybrid engine, the engine coolant temperature, the actual opening degree of the thermal management controller, and the actual speed of the electric water pump, the calculation execution module 2 determines the temperature limit torque value, the opening limit torque value, and the speed limit torque value of the hybrid engine. The calculation execution module 2 then transmits the temperature limit torque value, the opening limit torque value, and the speed limit torque value of the hybrid engine to the torque output module 3.

[0054] The torque output module 3 is used to receive the temperature torque limit value, the opening torque limit value, and the speed torque limit value of the hybrid engine, and output the overall torque limit value to the hybrid engine based on the temperature torque limit value, the opening torque limit value, and the speed torque limit value of the hybrid engine.

[0055] The fault diagnosis status of the thermal management controller includes two states: the thermal management controller is faulty and the thermal management controller is not faulty. The fault diagnosis status of the electronic water pump includes two states: the electronic water pump is faulty and the electronic water pump is not faulty.

[0056] Specifically, data acquisition module 1 acquires real-time data from the engine controller, including the hybrid engine speed, maximum allowable torque output, engine coolant temperature, fault diagnosis status of the thermal management controller, actual opening degree of the thermal management controller, fault diagnosis status of the electric water pump, and actual speed of the electric water pump. This data is then transmitted to calculation and execution module 2 for processing. Calculation and execution module 2 determines the temperature-limited torque value of the hybrid engine based on the engine coolant temperature, hybrid engine speed, and maximum allowable torque output, and further determines the temperature-limited torque value based on the fault diagnosis status of the thermal management controller and the engine coolant temperature. The opening torque limit of the hybrid engine is determined by the coolant temperature, the maximum allowable torque output of the hybrid engine, and the actual opening degree of the thermal management controller. At the same time, the speed torque limit of the hybrid engine is determined by the fault diagnosis status of the electric water pump, the engine coolant temperature, the maximum allowable torque output of the hybrid engine, and the actual speed of the electric water pump. The temperature torque limit, the opening torque limit, and the speed torque limit of the hybrid engine are transmitted to the torque output module 3. The torque output module 3 compares the temperature torque limit, the opening torque limit, and the speed torque limit of the hybrid engine, determines the overall torque limit based on the comparison result, and outputs the overall torque limit to the hybrid engine. For example, the minimum value among the temperature torque limit, the opening torque limit, and the speed torque limit is determined as the overall torque limit.

[0057] The torque control system for a hybrid engine provided in this embodiment of the invention includes: a data acquisition module 1, a calculation and execution module 2, and a torque output module 3. The data acquisition module 1 acquires in real time the hybrid engine speed, the maximum allowable torque value of the hybrid engine, the engine coolant temperature, the fault diagnosis status of the thermal management controller, the actual opening degree of the thermal management controller, the fault diagnosis status of the electric water pump, and the actual speed of the electric water pump. It then transmits these data to the calculation and execution module 2. The calculation and execution module 3 calculates the torque output based on the engine coolant temperature, the fault diagnosis status of the thermal management controller, the fault diagnosis status of the electric water pump, the hybrid engine speed, the maximum allowable torque value of the hybrid engine, the engine coolant temperature, the actual opening degree of the thermal management controller, and the actual speed of the electric water pump. The system determines the temperature-limited torque, the opening-limited torque, and the speed-limited torque of the hybrid engine based on the engine speed, the maximum allowable torque output of the hybrid engine, the engine coolant temperature, the actual opening degree of the thermal management controller, and the actual speed of the electric water pump. These values ​​are then transmitted to the torque output module 3. The torque output module 3 outputs an overall torque limit value to the hybrid engine based on these values. This allows the torque control system of the hybrid engine in this embodiment to comprehensively consider different fault diagnosis states and limit the output torque of the hybrid engine, effectively preventing component damage and significantly improving the service life of the hybrid engine.

[0058] Furthermore, Figure 2 This is a schematic diagram of the structure of another torque control system for a hybrid engine according to an embodiment of the present invention, with reference to... Figure 2 The calculation and execution module includes a data receiving unit 21, a temperature calculation unit 22, an opening degree calculation unit 23, a rotational speed calculation unit 24, and a data transmission unit 25.

[0059] The first end of the data receiving unit 21 is connected to the data acquisition module 1, the second end of the data receiving unit 21 is connected to the first end of the temperature calculation unit 22, the second end of the data receiving unit 21 is connected to the first end of the opening degree calculation unit 23, and the second end of the data receiving unit 21 is connected to the first end of the speed calculation unit 24. The data receiving unit 21 is used to receive the engine coolant temperature, the fault diagnosis status of the thermal management controller, the fault diagnosis status of the electric water pump, the hybrid engine speed, the maximum allowable output torque value of the hybrid engine, the engine coolant temperature, the actual opening degree of the thermal management controller, and the actual speed of the electric water pump. It transmits the engine coolant temperature, the hybrid engine speed, and the maximum allowable output torque value of the hybrid engine to the temperature calculation unit 22, transmits the fault diagnosis status of the thermal management controller, the engine coolant temperature, the maximum allowable output torque value of the hybrid engine, and the actual opening degree of the thermal management controller to the opening degree calculation unit 23, and transmits the fault diagnosis status of the electric water pump, the engine coolant temperature, the maximum allowable output torque value of the hybrid engine, and the actual speed of the electric water pump to the speed calculation unit 24.

[0060] The second end of the temperature calculation unit 22 is connected to the first end of the data transmission unit 25. The temperature calculation unit 22 is used to determine the temperature limit torque value of the hybrid engine based on the engine coolant temperature, the hybrid engine speed, and the maximum torque value that the hybrid engine can output, and transmit the temperature limit torque value of the hybrid engine to the data transmission unit 25.

[0061] The second end of the opening calculation unit 23 is connected to the first end of the data transmission unit 25. The opening calculation unit 23 is used to determine the opening torque limit value of the hybrid engine based on the fault diagnosis status of the thermal management controller, the engine coolant temperature, the maximum torque value that the hybrid engine can output, and the actual opening of the thermal management controller, and transmit the opening torque limit value of the hybrid engine to the data transmission unit 25.

[0062] The second end of the speed calculation unit 24 is connected to the first end of the data transmission unit 25. The speed calculation unit 24 is used to determine the speed limit torque value of the hybrid engine based on the fault diagnosis status of the electronic water pump, the engine coolant temperature, the maximum torque value that the hybrid engine can output, and the actual speed of the electronic water pump, and transmit the opening torque limit value of the hybrid engine to the data transmission unit 25.

[0063] The second end of the data transmission unit 25 is connected to the torque output module 3. The data transmission unit 25 is used to transmit the temperature torque limit value, the opening torque limit value, and the speed torque limit value of the hybrid engine to the torque output module 3.

[0064] Specifically, the data receiving unit 21 receives the engine coolant temperature, the fault diagnosis status of the thermal management controller, the fault diagnosis status of the electric water pump, the hybrid engine speed, the maximum allowable torque value of the hybrid engine, the engine coolant temperature, the actual opening degree of the thermal management controller, and the actual speed of the electric water pump from the data acquisition module 1. It then categorizes these data, transmitting the engine coolant temperature, hybrid engine speed, and maximum allowable torque value of the hybrid engine to the temperature calculation unit 22, the fault diagnosis status of the thermal management controller, the maximum allowable torque value of the hybrid engine, and the actual opening degree of the thermal management controller to the opening degree calculation unit 23, and the fault diagnosis status of the electric water pump, the engine coolant temperature, the maximum allowable torque value of the hybrid engine, and the actual speed of the electric water pump to the speed calculation unit 24.

[0065] The temperature calculation unit 22 compares the engine coolant temperature with the first preset value and the second preset value, and determines the temperature limit torque value of the hybrid engine based on the comparison result, combined with the hybrid engine speed and the maximum allowable output torque of the hybrid engine, and transmits the temperature limit torque value of the hybrid engine to the data transmission unit.

[0066] When the thermal management controller is functioning correctly, the opening calculation unit 23 determines the maximum allowable torque output of the hybrid engine as the opening torque limit value of the hybrid engine and transmits the opening torque limit value of the hybrid engine to the data transmission unit. When the thermal management controller is functioning correctly, the actual opening of the thermal management controller is compared with the preset opening value. Based on the comparison result, combined with the engine coolant temperature and the maximum allowable torque output of the hybrid engine, the opening torque limit value of the hybrid engine is determined and transmitted to the data transmission unit.

[0067] When the electronic water pump is functioning correctly, the speed calculation unit 24 determines the maximum allowable torque output of the hybrid engine as the speed limit torque value of the hybrid engine and transmits the speed limit torque value of the hybrid engine to the data transmission unit. When the electronic water pump is functioning correctly, the actual speed of the electronic water pump is compared with the preset speed value. Based on the comparison result, combined with the engine coolant temperature and the maximum allowable torque output of the hybrid engine, the speed limit torque value of the hybrid engine is determined and transmitted to the data transmission unit.

[0068] Furthermore, the temperature calculation unit is used for:

[0069] The engine coolant temperature is compared with a first preset value and a second preset value. Based on the comparison result, the temperature limit torque value of the hybrid engine is determined in combination with the hybrid engine speed and the maximum allowable output torque value of the hybrid engine. The temperature limit torque value of the hybrid engine is then transmitted to the data transmission unit.

[0070] Specifically, the engine coolant temperature is compared with a first preset value and a second preset value. If the engine coolant temperature is less than or equal to the first preset value, the maximum allowable torque output of the hybrid engine is determined to be the temperature-limited torque value of the hybrid engine, and the temperature-limited torque value of the hybrid engine is transmitted to the data transmission unit. If the engine coolant temperature is greater than the first preset value and less than or equal to the second preset value, a first torque limiting coefficient is determined based on the engine coolant temperature. The temperature-limited torque value of the hybrid engine is determined by the first torque limiting coefficient and the maximum allowable torque output of the hybrid engine, and the temperature-limited torque value of the hybrid engine is transmitted to the data transmission unit. If the engine coolant temperature is greater than the second preset value, a first torque limiting coefficient is determined based on the engine coolant temperature, and a second torque limiting coefficient is determined based on the hybrid engine speed. The temperature-limited torque value of the hybrid engine is determined by the first torque limiting coefficient, the second torque limiting coefficient, and the maximum allowable torque output of the hybrid engine, and the temperature-limited torque value of the hybrid engine is transmitted to the data transmission unit.

[0071] Furthermore, the temperature calculation unit is used for:

[0072] Compare the engine coolant temperature with a first preset value and a second preset value;

[0073] If the engine coolant temperature is less than or equal to the first preset value, the maximum allowable torque output value of the hybrid engine is determined to be the temperature limit torque value of the hybrid engine, and the temperature limit torque value of the hybrid engine is transmitted to the data transmission unit.

[0074] If the engine coolant temperature is greater than the first preset value and less than or equal to the second preset value, then the first torque limiting coefficient is determined based on the engine coolant temperature, and the temperature torque limiting value of the hybrid engine is determined by the first torque limiting coefficient and the maximum torque value that the hybrid engine is allowed to output, and the temperature torque limiting value of the hybrid engine is transmitted to the data transmission unit.

[0075] If the engine coolant temperature is greater than the second preset value, a first torque limiting coefficient is determined based on the engine coolant temperature, and a second torque limiting coefficient is determined based on the hybrid engine speed. The temperature torque limiting value of the hybrid engine is determined by the first torque limiting coefficient, the second torque limiting coefficient, and the maximum torque value that the hybrid engine is allowed to output, and the temperature torque limiting value of the hybrid engine is transmitted to the data transmission unit.

[0076] Specifically, the engine coolant temperature is compared with a first preset value and a second preset value. If the engine coolant temperature is lower than the first preset value, it indicates that the engine coolant temperature is low and the engine coolant can meet the cooling requirements of the hybrid engine. Therefore, there is no need to limit the output torque of the hybrid engine. Thus, the maximum allowable output torque value of the hybrid engine is determined as the temperature-limited torque value of the hybrid engine, and this value is transmitted to the data transmission unit. If the engine coolant temperature is higher than the first preset value but lower than the second preset value, it indicates that the engine coolant temperature is high. In this case, the engine coolant cannot meet the cooling requirements of the hybrid engine, and the output torque of the hybrid engine needs to be limited. A first torque limiting coefficient can be determined by referring to a first torque limiting factor graph based on the engine coolant temperature. The temperature-limited torque value of the hybrid engine is then determined by multiplying the first torque limiting coefficient by the maximum allowable output torque value of the hybrid engine, and this value is transmitted to the data transmission unit. For example, let the temperature-limited torque value of the hybrid engine be Tq. CoolT The first torque limiting coefficient is Fac TEng1 The maximum allowable torque output of the hybrid engine is Tq. Max Therefore, the temperature-limiting torque value Tq of the hybrid engine CoolT = First torque limiting coefficient Fac TEng1 *The maximum allowable torque output of the hybrid engine is Tq Max .

[0077] If the engine coolant temperature exceeds the second preset value, it indicates that the engine coolant temperature is already very high. In this case, the engine coolant cannot meet the cooling requirements of the hybrid engine, necessitating a more stringent limitation on the hybrid engine's output torque. This can be achieved by determining the first torque limiting coefficient based on the engine coolant temperature using a first torque limiting factor graph, and simultaneously determining the second torque limiting coefficient based on the hybrid engine speed using a second torque limiting factor graph. Finally, the temperature-limited torque value of the hybrid engine is determined by multiplying the first torque limiting coefficient, the second torque limiting coefficient, and the maximum allowable output torque value of the hybrid engine. This temperature-limited torque value is then transmitted to the data transmission unit. For example, let the temperature-limited torque value of the hybrid engine be Tq. CoolT The first torque limiting coefficient is Fac TEng1 The second torque limiting coefficient is Fac TEng2 The maximum allowable torque output of the hybrid engine is Tq. Max Therefore, the temperature-limiting torque value Tq of the hybrid engine CoolT = First torque limiting coefficient Fac TEng1 *The second torque limiting coefficient is Fac TEng2 *The maximum allowable torque output of the hybrid engine is Tq MaxThe first torsion limiting factor spectrum is the high-temperature torsion limiting factor spectrum, and the second torsion limiting factor spectrum is the ultra-high-temperature torsion limiting factor spectrum. Both the first and second torsion limiting factor spectra can be obtained statistically from experimental data.

[0078] Furthermore, the opening calculation unit includes a timer, which is used to record the temperature holding time of each engine coolant temperature when the thermal management controller fails.

[0079] The opening calculation unit is used for:

[0080] When there is no fault in the thermal management controller, the maximum allowable torque value of the hybrid engine is determined to be the opening torque limit value of the hybrid engine, and the opening torque limit value of the hybrid engine is transmitted to the data transmission unit.

[0081] When the thermal management controller malfunctions, the actual opening degree of the thermal management controller is compared with the preset opening degree value. Based on the comparison result, combined with the engine coolant temperature, the maximum allowable torque value of the hybrid engine, and the temperature holding time of the current engine coolant temperature, the opening torque limit value of the hybrid engine is determined and transmitted to the data transmission unit.

[0082] Specifically, when the thermal management controller is functioning correctly, it indicates that its operation meets the hybrid engine's requirements, and there is no need to limit the hybrid engine's output torque. Therefore, the maximum allowable output torque of the hybrid engine can be determined as the hybrid engine's opening torque limit value, which is then transmitted to the data transmission unit. When the thermal management controller is faulty, if the actual opening degree of the thermal management controller is less than or equal to the preset opening degree value, a third torque limit coefficient is determined based on the engine coolant temperature and the current engine coolant temperature holding time. This third torque limit coefficient, along with the maximum allowable output torque value of the hybrid engine, is then used to determine the hybrid engine's opening torque limit value, which is transmitted to the data transmission unit. If the actual opening degree of the thermal management controller is greater than the preset opening degree value, a fourth torque limit coefficient is determined based on the engine coolant temperature. This fourth torque limit coefficient, along with the maximum allowable output torque value of the hybrid engine, is then used to determine the hybrid engine's opening torque limit value, which is transmitted to the data transmission unit.

[0083] Furthermore, the opening calculation unit is used for:

[0084] When the thermal management controller malfunctions, if the actual opening degree of the thermal management controller is less than or equal to the preset opening degree value, a third torque limiting coefficient is determined based on the engine coolant temperature and the temperature holding time of the current engine coolant temperature. The opening torque limiting value of the hybrid engine is determined by the third torque limiting coefficient and the maximum torque value that the hybrid engine is allowed to output, and the opening torque limiting value of the hybrid engine is transmitted to the data transmission unit.

[0085] If the actual opening degree of the thermal management controller is greater than the preset opening degree value, the fourth torque limiting coefficient is determined based on the engine coolant temperature. The opening torque limiting value of the hybrid engine is determined by the fourth torque limiting coefficient and the maximum torque value that the hybrid engine is allowed to output, and the opening torque limiting value of the hybrid engine is transmitted to the data transmission unit.

[0086] Specifically, when the thermal management controller malfunctions, if the actual opening degree of the thermal management controller is less than or equal to the preset opening value, it indicates a serious fault in the thermal management controller. Because the actual opening degree of the thermal management controller is too small, the engine coolant flow rate is essentially zero. At this time, the coolant temperature sensor cannot accurately reflect the current actual temperature of the hybrid engine. Therefore, it is necessary to determine the third torque limiting coefficient based on the engine coolant temperature and the current coolant temperature holding time, referring to the third torque limiting factor graph. Finally, the opening torque limiting value of the hybrid engine is determined by multiplying the third torque limiting coefficient by the maximum allowable torque value of the hybrid engine, and this value is transmitted to the data transmission unit. For example, let the opening torque limiting value of the hybrid engine be Tq. TMM The maximum allowable torque output of a hybrid engine is Tq. Max The third torque limiting coefficient is Fac TMM1 Therefore, the opening torque limit Tq of the hybrid engine TMM = The maximum allowable torque output of the hybrid engine, Tq Max *Third torque limiting coefficient Fac TMM1 .

[0087] If the actual opening degree of the thermal management controller is greater than the preset opening value, it indicates a general fault in the thermal management controller. In this case, the engine coolant still has circulation capability, but it cannot meet the cooling requirements of the hybrid engine. Therefore, it is still necessary to limit the output torque of the hybrid engine. The fourth torque limiting coefficient can be determined by referring to the fourth torque limiting factor graph based on the engine coolant temperature. Finally, the opening torque limiting value of the hybrid engine is determined by multiplying the fourth torque limiting coefficient by the maximum allowable output torque value of the hybrid engine, and then transmitted to the data transmission unit. For example, let the opening torque limiting value of the hybrid engine be Tq. TMM The maximum allowable torque output of a hybrid engine is Tq. Max The fourth torque limiting coefficient is Fac TMM2Therefore, the opening torque limit Tq of the hybrid engine TMM = The maximum allowable torque output of the hybrid engine, Tq Max *Fourth torque limiting coefficient Fac TMM2 The third torque limiting factor spectrum represents the torque limiting factor spectrum for severe faults in the thermal management controller, while the fourth torque limiting factor spectrum represents the torque limiting factor spectrum for general faults in the thermal management controller. The third and fourth torque limiting factor spectra can be obtained statistically from experimental data.

[0088] Furthermore, the speed calculation unit is used for:

[0089] When there is no fault in the electronic water pump, the maximum torque value that the hybrid engine can output is determined to be the speed limit torque value of the hybrid engine, and the speed limit torque value of the hybrid engine is transmitted to the data transmission unit.

[0090] When the electronic water pump malfunctions, the actual speed of the electronic water pump is compared with the preset speed value. Based on the comparison result, combined with the engine coolant temperature and the maximum torque value that the hybrid engine can output, the speed limit torque value of the hybrid engine is determined, and the opening torque limit value of the hybrid engine is transmitted to the data transmission unit.

[0091] Specifically, when the electronic water pump is functioning correctly, it indicates that its operation meets the requirements of the hybrid engine, and there is no need to limit the engine's output torque. Therefore, the maximum allowable torque value for the hybrid engine can be determined as the engine's torque limit value, and this value is transmitted to the data transmission unit. When the electronic water pump is faulty, if the actual speed of the pump is less than or equal to a preset speed value, a first fixed torque value is determined as the engine's torque limit value, and this value is transmitted to the data transmission unit. If the actual speed of the pump is greater than the preset speed value, the engine's torque limit value is determined based on the engine coolant temperature and the maximum allowable torque value for the hybrid engine, and this value is transmitted to the data transmission unit. The first fixed torque value can be set according to actual conditions, and this embodiment of the invention does not impose any restrictions on it.

[0092] Furthermore, the speed calculation unit is used for:

[0093] When the electronic water pump malfunctions, if the actual speed of the electronic water pump is less than or equal to the preset speed value, the first fixed torque value is determined to be the speed limit torque value of the hybrid engine, and the speed limit torque value of the hybrid engine is transmitted to the data transmission unit.

[0094] If the actual speed of the electric water pump is greater than the preset speed value, the fifth torque limiting coefficient is determined based on the engine coolant temperature. The speed limit torque value of the hybrid engine is determined by the fifth torque limiting coefficient and the maximum torque value that the hybrid engine can output, and the speed limit torque value of the hybrid engine is transmitted to the data transmission unit.

[0095] Specifically, when the electronic water pump malfunctions, if its actual speed is less than or equal to the preset speed value, it indicates a serious fault. Because the actual speed is too low, the engine coolant circulation is slow. In this case, the first fixed torque value set in the speed calculation unit is determined as the hybrid engine's speed torque limit value, and this value is transmitted to the data transmission unit. For example, the first fixed torque value can be 10% of the maximum allowable torque value of the hybrid engine. If the actual speed of the electronic water pump is greater than the preset speed value, it indicates a general fault. In this case, the actual speed is low and cannot meet the cooling requirements of the hybrid engine, necessitating a limitation on the hybrid engine's output torque. The fifth torque limit coefficient can be determined by referring to the fifth torque limit factor graph based on the engine coolant temperature. The hybrid engine's speed torque limit value is then determined by multiplying the fifth torque limit coefficient by the maximum allowable torque value of the hybrid engine, and transmitted to the data transmission unit. The fifth torque limit factor graph is a general fault torque limit factor graph for the electronic water pump, which can be obtained statistically from experimental data.

[0096] Furthermore, the torque output module is used for:

[0097] The temperature-limited torque value, the opening-limited torque value, and the speed-limited torque value of the hybrid engine are compared, and the overall torque limit value is determined based on the comparison results. The overall torque limit value is then output to the hybrid engine.

[0098] Specifically, the temperature-limited torque value, the opening-limited torque value, and the speed-limited torque value of the hybrid engine can be compared, and the minimum value among these three values ​​can be determined as the overall torque limit value, which is then output to the hybrid engine.

[0099] This invention provides a torque control method for a hybrid engine, applicable to the torque control system of any of the hybrid engines described in the above embodiments. Figure 3 This is a flowchart of a torque control method for a hybrid engine according to an embodiment of the present invention, with reference to... Figure 3 Torque control methods include:

[0100] S110 The data acquisition module acquires the hybrid engine speed, the maximum allowable output torque of the hybrid engine, the engine coolant temperature, the fault diagnosis status of the thermal management controller, the actual opening degree of the thermal management controller, the fault diagnosis status of the electric water pump, and the actual speed of the electric water pump in real time, and transmits the engine coolant temperature, the fault diagnosis status of the thermal management controller, the fault diagnosis status of the electric water pump, the hybrid engine speed, the maximum allowable output torque of the hybrid engine, the engine coolant temperature, the actual opening degree of the thermal management controller, and the actual speed of the electric water pump to the calculation execution module.

[0101] S120: After receiving the engine coolant temperature, the fault diagnosis status of the thermal management controller, the fault diagnosis status of the electric water pump, the hybrid engine speed, the maximum allowable torque value of the hybrid engine, the engine coolant temperature, the actual opening degree of the thermal management controller, and the actual speed of the electric water pump, the calculation execution module determines the temperature limit torque value, the opening limit torque value, and the speed limit torque value of the hybrid engine based on the engine coolant temperature, the fault diagnosis status of the thermal management controller, the fault diagnosis status of the electric water pump, the hybrid engine speed, the maximum allowable torque value of the hybrid engine, the engine coolant temperature, the actual opening degree of the thermal management controller, and the actual speed of the electric water pump. Then, it transmits the temperature limit torque value, the opening limit torque value, and the speed limit torque value of the hybrid engine to the torque output module.

[0102] S130: After receiving the temperature torque limit value, the opening torque limit value, and the speed torque limit value of the hybrid engine, the torque output module outputs the overall torque limit value to the hybrid engine based on these values.

[0103] The torque control method for a hybrid engine provided in this embodiment of the invention acquires in real time the hybrid engine speed, the maximum allowable output torque value of the hybrid engine, the engine coolant temperature, the fault diagnosis status of the thermal management controller, the actual opening degree of the thermal management controller, the fault diagnosis status of the electric water pump, and the actual speed of the electric water pump through a data acquisition module. This data is then transmitted to a calculation and execution module. The calculation and execution module calculates the torque based on the engine coolant temperature, the fault diagnosis status of the thermal management controller, the fault diagnosis status of the electric water pump, the hybrid engine speed, the maximum allowable output torque value of the hybrid engine, the engine coolant temperature, the actual opening degree of the thermal management controller, and the actual speed of the electric water pump. The maximum allowable output torque value of the engine, the engine coolant temperature, the actual opening degree of the thermal management controller, and the actual speed of the electric water pump are used to determine the temperature-limited torque value, the opening-limited torque value, and the speed-limited torque value of the hybrid engine. These values ​​are then transmitted to the torque output module. The torque output module outputs an overall torque limit value to the hybrid engine based on these values. This allows the torque control method for the hybrid engine in this embodiment to limit the output torque of the hybrid engine according to different fault sources, effectively preventing damage to hybrid engine components and greatly improving the service life of the hybrid engine.

[0104] It should be understood that the various forms of processes shown above can be used, with steps reordered, added, or deleted. For example, the steps described in this invention can be executed in parallel, sequentially, or in different orders, as long as the desired result of the technical solution of this invention can be achieved, and this is not limited herein.

[0105] The specific embodiments described above do not constitute a limitation on the scope of protection of this invention. Those skilled in the art should understand that various modifications, combinations, sub-combinations, and substitutions can be made according to design requirements and other factors. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this invention should be included within the scope of protection of this invention.

Claims

1. A torque control system for a hybrid engine, characterized in that, include: Data acquisition module, calculation and execution module, and torque output module; The data acquisition module is connected to the calculation execution module. The data acquisition module is used to acquire in real time the hybrid engine speed, the maximum allowable torque value of the hybrid engine, the engine coolant temperature, the fault diagnosis status of the thermal management controller, the actual opening degree of the thermal management controller, the fault diagnosis status of the electric water pump, and the actual speed of the electric water pump. The data acquisition module then transmits the engine coolant temperature, the fault diagnosis status of the thermal management controller, the fault diagnosis status of the electric water pump, the hybrid engine speed, the maximum allowable torque value of the hybrid engine, the engine coolant temperature, the actual opening degree of the thermal management controller, and the actual speed of the electric water pump to the calculation execution module. The calculation execution module is connected to the torque output module. The calculation execution module is used to receive the engine coolant temperature, the fault diagnosis status of the thermal management controller, the fault diagnosis status of the electronic water pump, the hybrid engine speed, the maximum allowable torque value of the hybrid engine, the engine coolant temperature, the actual opening degree of the thermal management controller, and the actual speed of the electronic water pump. Based on the engine coolant temperature, the fault diagnosis status of the thermal management controller, the fault diagnosis status of the electronic water pump, the hybrid engine speed, the maximum allowable torque value of the hybrid engine, the engine coolant temperature, the actual opening degree of the thermal management controller, and the actual speed of the electronic water pump, the calculation execution module determines the temperature limit torque value, the opening limit torque value, and the water pump speed limit torque value of the hybrid engine. The calculation execution module then transmits the temperature limit torque value, the opening limit torque value, and the water pump speed limit torque value of the hybrid engine to the torque output module. The torque output module is used to receive the temperature torque limit value, the opening torque limit value, and the water pump speed torque limit value of the hybrid engine, and output the overall torque limit value to the hybrid engine based on the temperature torque limit value, the opening torque limit value, and the water pump speed torque limit value. The calculation execution module includes an opening degree calculation unit; The opening calculation unit includes a timer, which is used to record the temperature holding time of each engine coolant temperature when the thermal management controller malfunctions. The opening degree calculation unit is used for: When there is no fault in the thermal management controller, the maximum torque value that the hybrid engine can output is determined to be the opening torque limit value of the hybrid engine, and the opening torque limit value of the hybrid engine is transmitted to the data transmission unit. When the thermal management controller malfunctions, the actual opening degree of the thermal management controller is compared with the preset opening degree value. Based on the comparison result, combined with the engine coolant temperature, the maximum allowable torque value of the hybrid engine, and the temperature holding time of the current engine coolant temperature, the opening torque limit value of the hybrid engine is determined, and the opening torque limit value of the hybrid engine is transmitted to the data transmission unit. The opening degree calculation unit is used for: When the thermal management controller malfunctions, if the actual opening degree of the thermal management controller is less than or equal to the preset opening degree value, a third torque limiting coefficient is determined based on the engine coolant temperature and the temperature holding time of the current engine coolant temperature. The opening torque limiting value of the hybrid engine is determined by the third torque limiting coefficient and the maximum torque value that the hybrid engine is allowed to output, and the opening torque limiting value of the hybrid engine is transmitted to the data transmission unit. If the actual opening degree of the thermal management controller is greater than the preset opening degree value, a fourth torque limiting coefficient is determined based on the engine coolant temperature. The opening torque limiting value of the hybrid engine is determined by the fourth torque limiting coefficient and the maximum torque value that the hybrid engine is allowed to output, and the opening torque limiting value of the hybrid engine is transmitted to the data transmission unit.

2. The torque control system for the hybrid engine according to claim 1, characterized in that, The calculation execution module includes a data receiving unit, a temperature calculation unit, an opening degree calculation unit, a rotational speed calculation unit, and a data transmission unit; The first end of the data receiving unit is connected to the data acquisition module, the second end of the data receiving unit is connected to the first end of the temperature calculation unit, the second end of the data receiving unit is connected to the first end of the opening degree calculation unit, and the second end of the data receiving unit is connected to the first end of the speed calculation unit. The data receiving unit is used to receive the engine coolant temperature, the fault diagnosis status of the thermal management controller, the fault diagnosis status of the electric water pump, the hybrid engine speed, the maximum allowable torque value of the hybrid engine, the engine coolant temperature, the actual opening degree of the thermal management controller, and the actual speed of the electric water pump. It also transmits the engine coolant temperature, the hybrid engine speed, and the maximum allowable torque value of the hybrid engine to the temperature calculation unit; the fault diagnosis status of the thermal management controller, the engine coolant temperature, the maximum allowable torque value of the hybrid engine, and the actual opening degree of the thermal management controller to the opening degree calculation unit; and the fault diagnosis status of the electric water pump, the engine coolant temperature, the maximum allowable torque value of the hybrid engine, and the actual speed of the electric water pump to the speed calculation unit. The second end of the temperature calculation unit is connected to the first end of the data transmission unit. The temperature calculation unit is used to determine the temperature limit torque value of the hybrid engine based on the engine coolant temperature, the hybrid engine speed, and the maximum allowable torque value of the hybrid engine, and transmit the temperature limit torque value of the hybrid engine to the data transmission unit. The second end of the opening degree calculation unit is connected to the first end of the data transmission unit. The opening degree calculation unit is used to determine the opening degree torque limit value of the hybrid engine based on the fault diagnosis status of the thermal management controller, the engine coolant temperature, the maximum torque value that the hybrid engine can output, and the actual opening degree of the thermal management controller, and transmit the opening degree torque limit value of the hybrid engine to the data transmission unit. The second end of the speed calculation unit is connected to the first end of the data transmission unit. The speed calculation unit is used to determine the water pump speed limit torque value of the hybrid engine based on the fault diagnosis status of the electronic water pump, the engine coolant temperature, the maximum allowable torque value of the hybrid engine, and the actual speed of the electronic water pump, and transmit the opening torque limit value of the hybrid engine to the data transmission unit. The second end of the data transmission unit is connected to the torque output module. The data transmission unit is used to transmit the temperature torque limit value, the opening torque limit value, and the water pump speed torque limit value of the hybrid engine to the torque output module.

3. The torque control system for the hybrid engine according to claim 2, characterized in that, The temperature calculation unit is used for: The engine coolant temperature is compared with a first preset value and a second preset value. Based on the comparison result, the hybrid engine speed and the maximum allowable torque value of the hybrid engine are combined to determine the temperature limit torque value of the hybrid engine. The temperature limit torque value of the hybrid engine is then transmitted to the data transmission unit.

4. The torque control system for the hybrid engine according to claim 3, characterized in that, The temperature calculation unit is used for: Compare the engine coolant temperature with a first preset value and a second preset value; If the engine coolant temperature is less than or equal to the first preset value, then the maximum torque value that the hybrid engine can output is determined to be the temperature limit torque value of the hybrid engine, and the temperature limit torque value of the hybrid engine is transmitted to the data transmission unit. If the engine coolant temperature is greater than the first preset value and less than or equal to the second preset value, then a first torque limiting coefficient is determined based on the engine coolant temperature, and the temperature torque limiting value of the hybrid engine is determined by the first torque limiting coefficient and the maximum torque value that the hybrid engine is allowed to output, and the temperature torque limiting value of the hybrid engine is transmitted to the data transmission unit. If the engine coolant temperature is greater than the second preset value, a first torque limiting coefficient is determined based on the engine coolant temperature, and a second torque limiting coefficient is determined based on the hybrid engine speed. The temperature-limited torque value of the hybrid engine is determined by the first torque limiting coefficient, the second torque limiting coefficient, and the maximum allowable torque value of the hybrid engine, and the temperature-limited torque value of the hybrid engine is transmitted to the data transmission unit.

5. The torque control system for the hybrid engine according to claim 2, characterized in that, The rotational speed calculation unit is used for: When the electronic water pump is not faulty, the maximum torque value that the hybrid engine can output is determined to be the water pump speed torque limit value of the hybrid engine, and the water pump speed torque limit value of the hybrid engine is transmitted to the data transmission unit. When the electronic water pump malfunctions, the actual speed of the electronic water pump is compared with the preset speed value. Based on the comparison result, combined with the engine coolant temperature and the maximum torque value allowed to be output by the hybrid engine, the water pump speed limit torque value of the hybrid engine is determined, and the opening torque limit value of the hybrid engine is transmitted to the data transmission unit.

6. The torque control system for the hybrid engine according to claim 5, characterized in that, The rotational speed calculation unit is used for: When the electronic water pump malfunctions, if the actual speed of the electronic water pump is less than or equal to the preset speed value, then the first fixed torque value is determined to be the water pump speed limit torque value of the hybrid engine, and the water pump speed limit torque value of the hybrid engine is transmitted to the data transmission unit. If the actual speed of the electronic water pump is greater than the preset speed value, a fifth torque limiting coefficient is determined based on the engine coolant temperature. The water pump speed limiting torque value of the hybrid engine is determined by the fifth torque limiting coefficient and the maximum torque value that the hybrid engine is allowed to output, and the water pump speed limiting torque value of the hybrid engine is transmitted to the data transmission unit.

7. The torque control system for the hybrid engine according to claim 1, characterized in that, The torque output module is used for: The temperature torque limit, the opening torque limit, and the water pump speed torque limit of the hybrid engine are compared, and the overall torque limit is determined based on the comparison results. The overall torque limit is then output to the hybrid engine.

8. A torque control method for a hybrid engine, characterized in that, A torque control system applied to a hybrid engine as described in any one of claims 1 to 7, comprising: The data acquisition module acquires the hybrid engine speed, the maximum allowable torque value of the hybrid engine, the engine coolant temperature, the fault diagnosis status of the thermal management controller, the actual opening degree of the thermal management controller, the fault diagnosis status of the electric water pump, and the actual speed of the electric water pump in real time, and transmits the engine coolant temperature, the fault diagnosis status of the thermal management controller, the fault diagnosis status of the electric water pump, the hybrid engine speed, the maximum allowable torque value of the hybrid engine, the engine coolant temperature, the actual opening degree of the thermal management controller, and the actual speed of the electric water pump to the calculation execution module. After receiving the engine coolant temperature, the fault diagnosis status of the thermal management controller, the fault diagnosis status of the electric water pump, the hybrid engine speed, the maximum allowable torque value of the hybrid engine, the engine coolant temperature, the actual opening degree of the thermal management controller, and the actual speed of the electric water pump, the calculation execution module determines the temperature limit torque value, the opening limit torque value, and the water pump speed limit torque value of the hybrid engine based on the engine coolant temperature, the fault diagnosis status of the thermal management controller, the fault diagnosis status of the electric water pump, the hybrid engine speed, the maximum allowable torque value of the hybrid engine, the engine coolant temperature, the actual opening degree of the thermal management controller, and the actual speed of the electric water pump. The module then transmits these values ​​to the torque output module. After receiving the temperature torque limit value, the opening torque limit value, and the water pump speed torque limit value of the hybrid engine, the torque output module outputs an overall torque limit value to the hybrid engine based on these values.

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