Control methods, devices, equipment and storage media for the heater water pump in hybrid vehicles

Abstract

This invention discloses a control method, device, equipment, and storage medium for a heater pump in a hybrid vehicle. Its features include: upon detecting an engine cooling request from the vehicle engine, acquiring the engine operating state and first basic engine parameters, and determining a first duty cycle of the heater pump based on the engine operating state and engine parameters; upon detecting a gas cooling request from the exhaust gas recirculation system, acquiring second basic engine parameters and gas parameters of the exhaust gas recirculation valve, and determining a second duty cycle of the heater pump based on the engine operating state and exhaust gas recirculation valve parameters; upon detecting a heating request command from the vehicle heating system, determining a third duty cycle of the heater pump based on the heating request command; and determining a target duty cycle of the heater pump based on the first, second, and third duty cycles. This improves the safety and reliability of hybrid vehicles.

Description

Technical Field

[0001] This invention relates to the field of hybrid vehicle cooling technology, and more particularly to a control method, apparatus, equipment, and storage medium for a hybrid vehicle's heater water pump. Background Technology

[0002] In hybrid vehicles, the heater pump typically exchanges heat with the engine or electric motor, transferring the heat generated by the engine or motor to the vehicle's heating system. This heat then powers the air conditioning system to provide warmth for the vehicle's interior, meeting its heating needs. However, in hybrid vehicles, the heater pump also cools the engine and exhaust gas recirculation (EGR) system during the heat exchange process. Currently, however, the heater pump primarily addresses the heating needs of the air conditioning system and does not respond to the cooling requirements of the engine and EGR system. Furthermore, the control methods for the heater pump lack support for addressing the cooling needs of these systems. Summary of the Invention

[0003] This invention provides a control method, apparatus, device, and storage medium for a heater pump in a hybrid vehicle, to solve the technical problem that the heater pump cannot respond to the cooling needs of the vehicle engine and exhaust gas recirculation system.

[0004] According to one aspect of the present invention, a method for controlling the heater water pump of a hybrid vehicle is provided, comprising:

[0005] When an engine cooling request is detected from the vehicle engine, the engine operating status and first engine basic parameters of the vehicle engine are obtained, and the first duty cycle of the heater pump is determined based on the engine operating status and the engine basic parameters.

[0006] When a gas cooling request from the exhaust gas recirculation system is detected, the second engine basic parameters of the vehicle engine and the gas parameters of the exhaust gas recirculation valve are obtained, and the second duty cycle of the heater pump is determined based on the engine operating status and the gas parameters of the exhaust gas recirculation valve.

[0007] Upon detecting a heating request command from the vehicle heating system, the third duty cycle of the heater pump is determined based on the heating request command.

[0008] The target duty cycle of the warm air pump is determined based on the first duty cycle, the second duty cycle, and the third duty cycle.

[0009] According to another aspect of the present invention, a control device for a heater water pump in a hybrid vehicle is provided, comprising:

[0010] The engine cooling demand module is used to obtain the engine operating status and first engine basic parameters of the vehicle engine when an engine cooling request is detected, and to determine the first duty cycle of the heater pump based on the engine operating status and the engine basic parameters.

[0011] The exhaust gas recirculation system demand module is used to obtain the second engine basic parameters of the vehicle engine and the gas parameters of the exhaust gas recirculation valve when a gas cooling request of the exhaust gas recirculation system is detected, and to determine the second duty cycle of the heater pump based on the engine operating status and the gas parameters of the exhaust gas recirculation valve.

[0012] The heating demand module is used to determine the third duty cycle of the heater pump based on the heating request command when a heating request command of the vehicle heating system is detected.

[0013] The heater pump control module is used to determine the target duty cycle of the heater pump based on the first duty cycle, the second duty cycle, and the third duty cycle.

[0014] According to another aspect of the present invention, an electronic device is provided, the electronic device comprising:

[0015] At least one processor; and

[0016] A memory communicatively connected to the at least one processor; wherein,

[0017] The memory stores a computer program that can be executed by the at least one processor, the computer program being executed by the at least one processor to enable the at least one processor to perform the control method for the heater water pump of the hybrid vehicle according to any embodiment of the present invention.

[0018] According to another aspect of the present invention, a computer-readable storage medium is provided, the computer-readable storage medium storing computer instructions for causing a processor to execute and implement the control method for the heater water pump of a hybrid vehicle according to any embodiment of the present invention.

[0019] The technical solution of this invention, upon detecting an engine cooling request from a vehicle engine, acquires the engine operating state and first basic engine parameters of the vehicle engine, and determines a first duty cycle of the heater pump based on the engine operating state and the engine parameters. The heater pump can respond to the cooling needs of the vehicle engine, and by controlling the heater pump according to the engine operating state and engine parameters, it supports engine cooling, improves the control accuracy of the heater pump, and enhances the safety and reliability of the hybrid vehicle engine. Upon detecting a gas cooling request from the exhaust gas recirculation system, the invention acquires a second basic engine parameter and the gas parameters of the exhaust gas recirculation valve, and determines a second duty cycle of the heater pump based on the engine operating state and the exhaust gas recirculation valve parameters. The heater pump can respond to the cooling needs of the exhaust gas recirculation system, and by controlling the heater pump according to the exhaust gas recirculation valve parameters and engine parameters, it supports exhaust gas recirculation system cooling, further improving the control accuracy of the heater pump and enhancing the safety and reliability of the hybrid vehicle engine. Safety and reliability: Upon detecting a heating request command from the vehicle's heating system, the system determines a third duty cycle for the heater pump based on the heating request command. It then determines a target duty cycle for the heater pump based on the first, second, and third duty cycles. Finally, it determines the target duty cycle for the heater pump based on the vehicle's demand for the heater pump, effectively meeting the vehicle's needs and improving the utilization rate of the vehicle's heater pump. This further enhances the control accuracy of the hybrid vehicle system and solves the technical problem in the prior art where the heater pump cannot respond to the cooling needs of the vehicle's engine and exhaust gas recirculation system. It enables the heater pump to participate in the cooling of the vehicle's engine and exhaust gas recirculation system, improving the utilization rate of the heater pump, increasing the cooling efficiency of the vehicle's engine and exhaust gas recirculation system, and improving the safety and reliability of the hybrid vehicle.

[0020] 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

[0021] 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.

[0022] Figure 1 A flowchart of a control method for a heater pump in a hybrid vehicle is provided in Embodiment 1 of the present invention;

[0023] Figure 2 A flowchart of another method for controlling the heater water pump of a hybrid vehicle provided in an embodiment of the present invention;

[0024] Figure 3 A flowchart of another method for controlling the heater water pump of a hybrid vehicle provided in an embodiment of the present invention;

[0025] Figure 4 A schematic diagram of the structure of a control device for a heater water pump in a hybrid vehicle provided in an embodiment of the present invention;

[0026] Figure 5 A schematic diagram of the structure of an electronic device 10 that can be used to implement an embodiment of the present invention is shown. Detailed Implementation

[0027] 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.

[0028] 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.

[0029] Example 1

[0030] Figure 1 This is a flowchart illustrating a control method for a heater pump in a hybrid vehicle according to Embodiment 1 of the present invention. This embodiment is applicable to situations where the engine and exhaust gas recirculation system of a hybrid vehicle require cooling. The method can be executed by a control device for the heater pump of the hybrid vehicle. This control device can be implemented in hardware and / or software, and can be configured in an electronic device. Figure 1 As shown, the method includes:

[0031] S110. If an engine cooling request is detected from the vehicle engine, the engine operating status and first engine basic parameters of the vehicle engine are obtained, and the first duty cycle of the heater pump is determined based on the engine operating status and the engine basic parameters.

[0032] Among them, the engine cooling demand can be a request sent by the engine to cool the engine turbocharger.

[0033] The engine operating status can refer to the operating condition of the vehicle's engine. The engine operating status includes engine running and engine stopping. Engine running means that the vehicle's engine is operating and doing work, while engine stopping means that the vehicle's engine has stopped running.

[0034] The first engine basic parameters may include the water temperature and exhaust temperature when the engine is running, the water temperature when the engine is stopped, the exhaust temperature at the time of shutdown, the volute temperature when the engine is stopped, and the engine ambient temperature.

[0035] The first duty cycle can be the duty cycle at which the heater pump meets the cooling requirements of the vehicle's engine turbocharger.

[0036] Specifically, when the turbocharger of the vehicle engine needs cooling, an engine cooling request for the vehicle engine is generated. When the engine cooling request for the vehicle engine is detected, the engine operating status and the first engine basic parameters of the vehicle engine are obtained. Then, based on the engine operating status and the engine basic parameters, the first duty cycle required for the heater pump to cool the turbocharger of the vehicle engine is determined.

[0037] S120. When a gas cooling request from the exhaust gas recirculation system is detected, the second engine basic parameters of the vehicle engine and the gas parameters of the exhaust gas recirculation valve are obtained, and the second duty cycle of the heater pump is determined based on the engine operating status and the gas parameters of the exhaust gas recirculation valve.

[0038] The gas cooling request could be a request for cooling of the gases in the exhaust gas recirculation (EGR) system. The EGR system is a vehicle emission control device, typically integrated as a separate subsystem within the engine. It includes an EGR valve, which controls and regulates the amount of exhaust gas drawn from the engine's exhaust manifold and returns it to the intake manifold for reuse in the combustion process.

[0039] The basic parameters of the second engine may include engine speed, engine load, engine ambient temperature, and engine intake air temperature.

[0040] The gas parameters of the exhaust gas recirculation valve may include the exhaust gas mass flow rate at the valve and the system gas temperature at the exhaust gas recirculation valve.

[0041] Optionally, after the exhaust gas recirculation system is activated, the exhaust gas mass flow rate at the exhaust gas recirculation valve is detected to determine whether it exceeds a preset cooling threshold. If the exhaust gas mass flow rate at the exhaust gas recirculation valve exceeds the preset cooling mass flow rate, the system gas temperature at the exhaust gas recirculation valve is detected to determine whether it exceeds a preset cooling temperature. If the system gas temperature at the exhaust gas recirculation valve exceeds the preset cooling temperature, it indicates that the exhaust gas recirculation system needs cooling by a warm air pump, and a gas cooling request for the exhaust gas recirculation system is generated.

[0042] The second duty cycle can be the duty cycle of the warm air pump to meet the cooling requirements of the exhaust gas recirculation system.

[0043] Specifically, when a gas cooling request from the exhaust gas recirculation system is detected, the second engine basic parameters of the vehicle engine and the gas parameters of the exhaust gas recirculation valve are obtained. Based on the engine operating status and the gas parameters of the exhaust gas recirculation valve, the gas cooling requirement of the exhaust gas recirculation system is determined, and then the second duty cycle of the heater pump is determined.

[0044] S130. If a heating request command from the vehicle heating system is detected, the third duty cycle of the heater pump is determined according to the heating request command.

[0045] The heating request command can be generated by the vehicle's heating system based on heating needs. It's important to note that the vehicle's heating needs are determined by the driver inputting a heating command through the vehicle's infotainment system. The infotainment system then sends this heating request to the vehicle's heating system. This heating request can be transmitted via the vehicle's CAN (Controller Area Network) bus.

[0046] The third duty cycle can be the duty cycle at which the heater pump meets the heating system requirements of the vehicle.

[0047] Specifically, the vehicle heating system determines the heating request command based on the driver's heating needs, and determines the third duty cycle of the heater pump based on the heating request command.

[0048] S140. Determine the target duty cycle of the warm air pump based on the first duty cycle, the second duty cycle, and the third duty cycle.

[0049] The target duty cycle can be the final duty cycle at which the warm air pump meets the demand.

[0050] Specifically, after obtaining the first duty cycle, the second duty cycle, and the third duty cycle, the maximum value among the first duty cycle, the second duty cycle, and the third duty cycle is selected as the target duty cycle of the warm air pump.

[0051] The technical solution of this invention, upon detecting an engine cooling request from a vehicle engine, acquires the engine operating state and first basic engine parameters of the vehicle engine, and determines a first duty cycle of the heater pump based on the engine operating state and the engine parameters. The heater pump can respond to the cooling needs of the vehicle engine, and by controlling the heater pump according to the engine operating state and engine parameters, it supports engine cooling, improves the control accuracy of the heater pump, and enhances the safety and reliability of the hybrid vehicle engine. Upon detecting a gas cooling request from the exhaust gas recirculation system, the invention acquires a second basic engine parameter and the gas parameters of the exhaust gas recirculation valve, and determines a second duty cycle of the heater pump based on the engine operating state and the exhaust gas recirculation valve parameters. The heater pump can respond to the cooling needs of the exhaust gas recirculation system, and by controlling the heater pump according to the exhaust gas recirculation valve parameters and engine parameters, it supports exhaust gas recirculation system cooling, further improving the control accuracy of the heater pump and enhancing the safety and reliability of the hybrid vehicle engine. Safety and reliability: Upon detecting a heating request command from the vehicle's heating system, the system determines a third duty cycle for the heater pump based on the heating request command. It then determines a target duty cycle for the heater pump based on the first, second, and third duty cycles. Finally, it determines the target duty cycle for the heater pump based on the vehicle's demand for the heater pump, effectively meeting the vehicle's needs and improving the utilization rate of the vehicle's heater pump. This further enhances the control accuracy of the hybrid vehicle system and solves the technical problem in the prior art where the heater pump cannot respond to the cooling needs of the vehicle's engine and exhaust gas recirculation system. It enables the heater pump to participate in the cooling of the vehicle's engine and exhaust gas recirculation system, improving the utilization rate of the heater pump, increasing the cooling efficiency of the vehicle's engine and exhaust gas recirculation system, and improving the safety and reliability of the hybrid vehicle.

[0052] Figure 2This is a flowchart illustrating another method for controlling the heater pump of a hybrid vehicle according to an embodiment of the present invention. The relationship between this embodiment and the previous embodiments is that this describes a specific method for determining the vehicle engine's demand for the heater pump based on the engine's operating state and first engine basic parameters. Figure 2 As shown, the method includes:

[0053] S210. If an engine cooling request for the vehicle engine is detected, the engine operating status and first engine basic parameters of the vehicle engine are obtained.

[0054] S220. When the engine is in the running state, the first duty cycle is determined by querying the first engine basic parameters in the preset first cooling chart.

[0055] The preset first cooling chart can be a two-dimensional chart pre-set to determine the duty cycle of the heater pump's cooling demand during vehicle engine operation. It should be noted that the first cooling chart can be a two-dimensional chart based on the engine's coolant temperature and exhaust temperature during operation. The engine's coolant temperature and exhaust temperature are the variables in the two-dimensional chart, and the intersection of the two variables is the heater pump's duty cycle.

[0056] Specifically, when the engine is in the running state, the engine's coolant temperature and exhaust temperature are used to query the preset first cooling chart, and the required duty cycle obtained from the query is determined as the first duty cycle.

[0057] Optionally, in another optional embodiment of the present invention, determining the first duty cycle of the heater pump based on the engine operating state and the engine basic parameters further includes:

[0058] When the engine is in a stopped state, the first duty cycle is determined by querying the first engine basic parameters in the preset second cooling chart.

[0059] The preset second cooling chart can be a two-dimensional chart pre-set to determine the duty cycle of the heater pump's cooling demand during engine shutdown. It should be noted that the second cooling chart can be a two-dimensional chart based on the coolant temperature and exhaust temperature at the time of engine shutdown. The coolant temperature during engine operation and the exhaust temperature at the time of engine shutdown are used as variables in the two-dimensional chart, and the intersection of these two variables is used as the heater pump's duty cycle.

[0060] Specifically, when the engine is in a stopped state, the coolant temperature during engine operation and the exhaust temperature at the time of engine shutdown are queried in a preset second cooling chart, and the required duty cycle obtained from the query is determined as the first duty cycle.

[0061] Optionally, in another optional embodiment of the present invention, after determining the first duty cycle by querying the first engine basic parameters in a preset second cooling chart when the engine is in a stopped state, the method further includes:

[0062] The engine ambient temperature and the volute temperature of the vehicle engine are obtained.

[0063] The operating time of the heater pump is determined based on the engine ambient temperature and the volute temperature of the vehicle engine.

[0064] The shutdown command for the heating water pump is determined based on the first duty cycle and the operating time of the heating water pump.

[0065] Among them, the engine ambient temperature can be the ambient temperature of the vehicle engine; the engine casing temperature can be the temperature of the vehicle engine casing.

[0066] The running time can be the time the heater pump runs according to the first duty cycle. Optionally, when the engine is stopped, the first duty cycle is obtained. Since the engine is in the process of being stopped, the engine's cooling demand has a certain time limit. The running time can be calculated by using the volute temperature when the engine is stopped and the ambient temperature of the engine's surroundings. The required running time of the heater pump can then be determined. After the heater pump has run for the corresponding time, it can stop running.

[0067] Among them, the shutdown operation command can be a command to control the heating water pump to stop running.

[0068] Specifically, when the engine is stopped, during the cooling process of the engine turbocharger by the heater core pump, after determining the first duty cycle of the heater core pump, the ambient temperature of the engine and the volute temperature of the vehicle engine are obtained. The running time of the heater core pump is determined based on the ambient temperature of the engine and the volute temperature of the vehicle engine. After the actual running time of the heater core pump meets the running time requirement, the corresponding shutdown operation command of the heater core pump is determined based on the first duty cycle and the running time of the heater core pump. The heater core pump is then stopped by controlling the shutdown operation command.

[0069] Optionally, when the engine is stopped, if the engine restarts while the engine is cooling the turbocharger via the heater core pump, the engine cooling demand is determined by querying the engine's coolant temperature and exhaust temperature in a preset first cooling chart based on the engine's operating status. The duty cycle of the demand obtained from the query is then determined as the first duty cycle.

[0070] S230. When a gas cooling request from the exhaust gas recirculation system is detected, the second engine basic parameters of the vehicle engine and the gas parameters of the exhaust gas recirculation valve are obtained, and the second duty cycle of the heater pump is determined based on the engine operating status and the gas parameters of the exhaust gas recirculation valve.

[0071] S240. If a heating request command for the vehicle heating system is detected, the third duty cycle of the heater pump is determined according to the heating request command.

[0072] The technical solution of this invention, upon detecting an engine cooling request from a vehicle engine, acquires the engine operating state and first basic engine parameters of the vehicle engine, and determines a first duty cycle of the heater pump based on the engine operating state and the engine parameters. The heater pump can respond to the cooling needs of the vehicle engine, and by controlling the heater pump according to the engine operating state and engine parameters, it supports engine cooling, improves the control accuracy of the heater pump, and enhances the safety and reliability of the hybrid vehicle engine. Upon detecting a gas cooling request from the exhaust gas recirculation system, the invention acquires a second basic engine parameter and the gas parameters of the exhaust gas recirculation valve, and determines a second duty cycle of the heater pump based on the engine operating state and the exhaust gas recirculation valve parameters. The heater pump can respond to the cooling needs of the exhaust gas recirculation system, and by controlling the heater pump according to the exhaust gas recirculation valve parameters and engine parameters, it supports exhaust gas recirculation system cooling, further improving the control accuracy of the heater pump and enhancing the safety and reliability of the hybrid vehicle engine. Safety and reliability: Upon detecting a heating request command from the vehicle's heating system, the system determines a third duty cycle for the heater pump based on the heating request command. It then determines a target duty cycle for the heater pump based on the first, second, and third duty cycles. Finally, it determines the target duty cycle for the heater pump based on the vehicle's demand for the heater pump, effectively meeting the vehicle's needs and improving the utilization rate of the vehicle's heater pump. This further enhances the control accuracy of the hybrid vehicle system and solves the technical problem in the prior art where the heater pump cannot respond to the cooling needs of the vehicle's engine and exhaust gas recirculation system. It enables the heater pump to participate in the cooling of the vehicle's engine and exhaust gas recirculation system, improving the utilization rate of the heater pump, increasing the cooling efficiency of the vehicle's engine and exhaust gas recirculation system, and improving the safety and reliability of the hybrid vehicle.

[0073] Figure 3 This is a flowchart illustrating another method for controlling the heater pump in a hybrid vehicle according to an embodiment of the present invention. The relationship between this embodiment and the above embodiments is to explain how to determine the cooling requirements of the exhaust gas recirculation system for the heater pump. Figure 3 As shown, the method includes:

[0074] S310. When an engine cooling request is detected from the vehicle engine, the engine operating status and first engine basic parameters of the vehicle engine are obtained, and the first duty cycle of the heater pump is determined based on the engine operating status and the engine basic parameters.

[0075] S320. Based on the exhaust gas mass flow rate and the system gas temperature, query the preset third cooling chart to determine the required duty cycle of the warm air pump.

[0076] The third cooling chart can be a pre-set two-dimensional chart used to determine the duty cycle of the heater pump's cooling demand in the exhaust gas recirculation system. It should be noted that the third cooling chart can be a two-dimensional chart based on exhaust gas mass flow rate and system gas temperature, with exhaust gas mass flow rate and system gas temperature as variables in the two-dimensional chart, and the intersection of the two variables representing the heater pump's duty cycle.

[0077] Among them, the demand duty cycle can be the duty cycle of the operation of the demand heating water pump.

[0078] Specifically, based on the exhaust gas mass flow rate and system gas temperature, a query is performed in the pre-set third cooling chart, and the intersection of the exhaust gas mass flow rate and system gas temperature in the third cooling chart is taken as the demand duty cycle of the warm air pump.

[0079] S330. The required duty cycle is corrected according to the basic parameters of the second engine to determine the second duty cycle.

[0080] Specifically, since the cooling of the exhaust gas recirculation system is affected by the vehicle engine, after obtaining the duty cycle of the exhaust gas recirculation system's demand for the heater pump, the duty cycle is corrected by the second engine basic parameters of the vehicle engine to determine the second duty cycle.

[0081] Optionally, in another optional embodiment of the present invention, the step of correcting the required duty cycle based on the second engine basic parameters to determine the second duty cycle includes:

[0082] The first correction factor is determined based on the engine speed and the engine load;

[0083] The second correction factor is determined based on the engine ambient temperature and the engine intake air temperature;

[0084] The demand duty cycle is adjusted based on the first correction factor and the second correction factor to determine the second duty cycle.

[0085] The first correction factor and the second correction factor can be coefficients that correct the duty cycle of the exhaust gas recirculation system's demand on the heater pump. The first correction factor is determined by the engine speed and engine load. It is obtained by querying the engine speed and engine load in a pre-set two-dimensional chart of the first correction factor. The second correction factor is determined by the engine ambient temperature and engine intake air temperature. It is obtained by querying the engine ambient temperature and engine intake air temperature in a pre-set two-dimensional chart of the second correction factor.

[0086] Specifically, the first correction factor is determined by the engine speed and engine load in the second engine's basic parameters, and the second correction factor is determined by the engine ambient temperature and engine intake air temperature in the second engine's basic parameters. The first correction factor, the second correction factor, and the demand duty cycle are multiplied together to obtain the second duty cycle.

[0087] S340. If a heating request command for the vehicle heating system is detected, the third duty cycle of the heater pump is determined according to the heating request command.

[0088] S350. Determine the target duty cycle of the warm air pump based on the first duty cycle, the second duty cycle, and the third duty cycle.

[0089] Optionally, in another optional embodiment of the present invention, when the heater pump is detected to be in a faulty state, the engine torque limit value is determined according to a preset engine torque limit data table and the gas parameters of the exhaust gas recirculation valve.

[0090] One possible fault condition is the inability to control the heater pump. For example, when the vehicle controls the heater pump via the CAN bus, it may fail to receive a feedback signal from the heater pump or the feedback signal may be lost.

[0091] Among them, the engine torque limit value can be a value that limits the engine torque, and the engine torque limit value can effectively protect the vehicle engine.

[0092] The engine torque limit data table can be a pre-set two-dimensional chart used to determine the engine torque limit value of a vehicle. It should be noted that the engine torque limit data table is a two-dimensional chart constructed based on exhaust gas mass flow rate and system gas temperature. Exhaust gas mass flow rate and system gas temperature are used as variables in the two-dimensional chart, and the intersection of these two variables is used as the engine torque limit value for the heater core pump.

[0093] Specifically, when a fault is detected in the heater pump, the engine torque limit value is determined by querying the engine torque limit data table using the exhaust gas mass flow rate and system gas temperature, and then the engine torque is limited based on the engine torque limit value.

[0094] Optionally, after limiting the torque of the vehicle engine using the engine torque limiting value, the current torque limiting status of the vehicle engine is simultaneously reported to the VCU (Vehicle Control Unit). The VCU then determines the required torque value to be delivered to the engine based on the reported torque capability.

[0095] The technical solution of this invention, upon detecting an engine cooling request from a vehicle engine, acquires the engine operating state and first basic engine parameters of the vehicle engine, and determines a first duty cycle of the heater pump based on the engine operating state and the engine parameters. The heater pump can respond to the cooling needs of the vehicle engine, and by controlling the heater pump according to the engine operating state and engine parameters, it supports engine cooling, improves the control accuracy of the heater pump, and enhances the safety and reliability of the hybrid vehicle engine. Upon detecting a gas cooling request from the exhaust gas recirculation system, the invention acquires a second basic engine parameter and the gas parameters of the exhaust gas recirculation valve, and determines a second duty cycle of the heater pump based on the engine operating state and the exhaust gas recirculation valve parameters. The heater pump can respond to the cooling needs of the exhaust gas recirculation system, and by controlling the heater pump according to the exhaust gas recirculation valve parameters and engine parameters, it supports exhaust gas recirculation system cooling, further improving the control accuracy of the heater pump and enhancing the safety and reliability of the hybrid vehicle engine. Safety and reliability: Upon detecting a heating request command from the vehicle's heating system, the system determines a third duty cycle for the heater pump based on the heating request command. It then determines a target duty cycle for the heater pump based on the first, second, and third duty cycles. Finally, it determines the target duty cycle for the heater pump based on the vehicle's demand for the heater pump, effectively meeting the vehicle's needs and improving the utilization rate of the vehicle's heater pump. This further enhances the control accuracy of the hybrid vehicle system and solves the technical problem in the prior art where the heater pump cannot respond to the cooling needs of the vehicle's engine and exhaust gas recirculation system. It enables the heater pump to participate in the cooling of the vehicle's engine and exhaust gas recirculation system, improving the utilization rate of the heater pump, increasing the cooling efficiency of the vehicle's engine and exhaust gas recirculation system, and improving the safety and reliability of the hybrid vehicle.

[0096] Figure 4 This is a schematic diagram of the structure of a control device for a heater water pump in a hybrid vehicle, provided as an embodiment of the present invention. Figure 4 As shown, the device includes: an engine cooling demand module 410, an exhaust gas recirculation system demand module 420, a heating demand module 430, and a heater water pump control module 440; wherein:

[0097] The engine cooling demand module 410 is used to obtain the engine operating status and first engine basic parameters of the vehicle engine when an engine cooling request of the vehicle engine is detected, and to determine the first duty cycle of the heater water pump based on the engine operating status and the engine basic parameters.

[0098] The exhaust gas recirculation system demand module 420 is used to obtain the second engine basic parameters of the vehicle engine and the gas parameters of the exhaust gas recirculation valve when a gas cooling request of the exhaust gas recirculation system is detected, and to determine the second duty cycle of the heater pump based on the engine operating status and the gas parameters of the exhaust gas recirculation valve.

[0099] Heating demand module 430 is used to determine the third duty cycle of the heater water pump according to the heating request command when a heating request command of the vehicle heating system is detected.

[0100] The heater pump control module 440 is used to determine the target duty cycle of the heater pump based on the first duty cycle, the second duty cycle, and the third duty cycle.

[0101] The technical solution of this invention, upon detecting an engine cooling request from a vehicle engine, acquires the engine operating state and first basic engine parameters of the vehicle engine, and determines a first duty cycle of the heater pump based on the engine operating state and the engine parameters. The heater pump can respond to the cooling needs of the vehicle engine, and by controlling the heater pump according to the engine operating state and engine parameters, it supports engine cooling, improves the control accuracy of the heater pump, and enhances the safety and reliability of the hybrid vehicle engine. Upon detecting a gas cooling request from the exhaust gas recirculation system, the invention acquires a second basic engine parameter and the gas parameters of the exhaust gas recirculation valve, and determines a second duty cycle of the heater pump based on the engine operating state and the exhaust gas recirculation valve parameters. The heater pump can respond to the cooling needs of the exhaust gas recirculation system, and by controlling the heater pump according to the exhaust gas recirculation valve parameters and engine parameters, it supports exhaust gas recirculation system cooling, further improving the control accuracy of the heater pump and enhancing the safety and reliability of the hybrid vehicle engine. Safety and reliability: Upon detecting a heating request command from the vehicle's heating system, the system determines a third duty cycle for the heater pump based on the heating request command. It then determines a target duty cycle for the heater pump based on the first, second, and third duty cycles. Finally, it determines the target duty cycle for the heater pump based on the vehicle's demand for the heater pump, effectively meeting the vehicle's needs and improving the utilization rate of the vehicle's heater pump. This further enhances the control accuracy of the hybrid vehicle system and solves the technical problem in the prior art where the heater pump cannot respond to the cooling needs of the vehicle's engine and exhaust gas recirculation system. It enables the heater pump to participate in the cooling of the vehicle's engine and exhaust gas recirculation system, improving the utilization rate of the heater pump, increasing the cooling efficiency of the vehicle's engine and exhaust gas recirculation system, and improving the safety and reliability of the hybrid vehicle.

[0102] Optionally, the engine cooling requirement module is specifically used for:

[0103] When the engine is in the running state, the first duty cycle is determined by querying the first cooling chart based on the first engine basic parameters.

[0104] Optionally, the engine cooling requirement module is further used for:

[0105] When the engine is in a stopped state, the first duty cycle is determined by querying the first engine basic parameters in the preset second cooling chart.

[0106] Optionally, the engine cooling requirement module is further used for:

[0107] Obtain the ambient temperature and the volute temperature of the vehicle engine;

[0108] The operating time of the heater pump is determined based on the ambient temperature and the volute temperature of the vehicle engine.

[0109] The shutdown command for the heating water pump is determined based on the first duty cycle and the operating time of the heating water pump.

[0110] Optionally, the exhaust gas recirculation system requirement module is specifically used for:

[0111] The required duty cycle of the warm air pump is determined by querying the preset third cooling chart based on the exhaust gas mass flow rate and the system gas temperature.

[0112] The required duty cycle is corrected based on the second engine's basic parameters to determine the second duty cycle.

[0113] Optionally, the exhaust gas recirculation system requirement module is further used for:

[0114] The first correction factor is determined based on the engine speed and the engine load;

[0115] The second correction factor is determined based on the engine ambient temperature and the engine intake air temperature;

[0116] The demand duty cycle is adjusted based on the first correction factor and the second correction factor to determine the second duty cycle.

[0117] Optionally, the device further includes: a fault detection module and a torque limiting module, wherein,

[0118] The fault detection module is used to determine the engine torque limit value based on a preset engine torque limit data table and the gas parameters of the exhaust gas recirculation valve when the heater pump is detected to be in a fault state.

[0119] The torque limiting module is used to limit the torque of the vehicle engine according to the engine torque limiting value.

[0120] The control device for the heater pump of the hybrid vehicle provided in the embodiments of the present invention can execute the control method for the heater pump of the hybrid vehicle provided in any embodiment of the present invention, and has the corresponding functional modules and beneficial effects of the method.

[0121] Figure 5 A schematic diagram of an electronic device 10, which can be used to implement embodiments of the present invention, is shown. The electronic device is intended to represent various forms of digital computers, such as laptop computers, desktop computers, workstations, personal digital assistants, servers, blade servers, mainframe computers, and other suitable computers. The electronic device can also represent various forms of mobile devices, such as personal digital processors, cellular phones, smartphones, wearable devices (e.g., helmets, glasses, watches, etc.), and other similar computing devices. The components shown herein, their connections and relationships, and their patterns are merely illustrative and are not intended to limit the implementation of the invention described and / or claimed herein.

[0122] like Figure 5 As shown, the electronic device 10 includes at least one processor 11 and a memory, such as a read-only memory (ROM) 12 or a random access memory (RAM) 13, communicatively connected to the at least one processor 11. The memory stores computer programs executable by the at least one processor. The processor 11 can perform various appropriate actions and processes based on the computer program stored in the ROM 12 or loaded from storage unit 18 into the RAM 13. The RAM 13 may also store various programs and data required for the operation of the electronic device 10. The processor 11, ROM 12, and RAM 13 are interconnected via a bus 14. An input / output (I / O) interface 15 is also connected to the bus 14.

[0123] Multiple components in electronic device 10 are connected to I / O interface 15, including: input unit 16, such as keyboard, mouse, etc.; output unit 17, such as various types of monitors, speakers, etc.; storage unit 18, such as disk, optical disk, etc.; and communication unit 19, such as network card, modem, wireless transceiver, etc. Communication unit 19 allows electronic device 10 to exchange information / data with other devices through computer grids such as the Internet and / or various telecommunications grids.

[0124] Processor 11 can be a variety of general-purpose and / or special-purpose processing components with processing and computing capabilities. Some examples of processor 11 include, but are not limited to, a central processing unit (CPU), a graphics processing unit (GPU), various special-purpose artificial intelligence (AI) computing chips, various processors running machine learning model algorithms, a digital signal processor (DSP), and any suitable processor, controller, microcontroller, etc. Processor 11 performs the various methods and processes described above, such as the control method of the heater pump in a hybrid vehicle.

[0125] In some embodiments, the control method for the heater pump of a hybrid vehicle can be implemented as a computer program tangibly contained in a computer-readable storage medium, such as storage unit 18. In some embodiments, part or all of the computer program can be loaded and / or installed on electronic device 10 via ROM 12 and / or communication unit 19. When the computer program is loaded into RAM 13 and executed by processor 11, one or more steps of the control method for the heater pump of a hybrid vehicle described above can be performed. Alternatively, in other embodiments, processor 11 can be configured to perform the control method for the heater pump of a hybrid vehicle by any other suitable means (e.g., by means of firmware).

[0126] Various embodiments of the systems and techniques described above herein can be implemented in digital electronic circuit systems, integrated circuit systems, field-programmable gate arrays (FPGAs), application-specific integrated circuits (ASICs), application-specific standard products (ASSPs), systems-on-a-chip (SoCs), payload-programmable logic devices (CPLDs), computer hardware, firmware, software, and / or combinations thereof. These various embodiments may include implementations in one or more computer programs that can be executed and / or interpreted on a programmable system including at least one programmable processor, which may be a dedicated or general-purpose programmable processor, capable of receiving data and instructions from a storage system, at least one input device, and at least one output device, and transmitting data and instructions to the storage system, the at least one input device, and the at least one output device.

[0127] Computer programs used to implement the methods of the present invention can be written in any combination of one or more programming languages. These computer programs can be provided to a processor of a general-purpose computer, a special-purpose computer, or other programmable data processing device, such that when executed by the processor, the computer programs cause the patterns / operations specified in the flowcharts and / or block diagrams to be implemented. The computer programs can be executed entirely on a machine, partially on a machine, as a standalone software package partially on a machine and partially on a remote machine, or entirely on a remote machine or server.

[0128] In the context of this invention, a computer-readable storage medium can be a tangible medium that may contain or store a computer program for use by or in conjunction with an instruction execution system, apparatus, or device. A computer-readable storage medium may include, but is not limited to, electronic, magnetic, optical, electromagnetic, infrared, or semiconductor systems, apparatus, or devices, or any suitable combination thereof. Alternatively, a computer-readable storage medium may be a machine-readable signal medium. More specific examples of machine-readable storage media include electrical connections based on one or more wires, portable computer disks, hard disks, random access memory (RAM), read-only memory (ROM), erasable programmable read-only memory (EPROM or flash memory), optical fibers, portable compact disk read-only memory (CD-ROM), optical storage devices, magnetic storage devices, or any suitable combination thereof.

[0129] To provide interaction with a user, the systems and techniques described herein can be implemented on an electronic device having: a display device (e.g., a CRT (cathode ray tube) or LCD (liquid crystal display) monitor) for displaying information to the user; and a keyboard and pointing device (e.g., a mouse or trackball) through which the user provides input to the electronic device. Other types of devices can also be used to provide interaction with the user; for example, feedback provided to the user can be any form of sensory feedback (e.g., visual feedback, auditory feedback, or tactile feedback); and input from the user can be received in any form (including sound input, voice input, or tactile input).

[0130] The systems and technologies described herein can be implemented in computing systems that include backend components (e.g., as data servers), or middleware components (e.g., application servers), or frontend components (e.g., user computers with graphical user interfaces or grid browsers through which users can interact with implementations of the systems and technologies described herein), or any combination of such backend, middleware, or frontend components. The components of the system can be interconnected via digital data communication of any form or medium (e.g., a communication grid). Examples of communication grids include local area networks (LANs), wide area networks (WANs), blockchain grids, and the Internet.

[0131] A computing system can include clients and servers. Clients and servers are generally geographically separated and typically interact through a communication mesh. The client-server relationship is created by computer programs running on the respective computers and having a client-server relationship with each other. The server can be a cloud server, also known as a cloud computing server or cloud host, which is a hosting product within the cloud computing service system to address the shortcomings of traditional physical hosts and VPS services, such as high management difficulty and weak business scalability.

[0132] 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.

[0133] This embodiment provides a computer-readable storage medium storing a computer program that, when executed by a processor, implements the steps of a control method for a heater pump in a hybrid vehicle as provided in any embodiment of the present invention. The method includes:

[0134] When an engine cooling request is detected from the vehicle engine, the engine operating status and first engine basic parameters of the vehicle engine are obtained, and the first duty cycle of the heater pump is determined based on the engine operating status and the engine basic parameters.

[0135] When a gas cooling request from the exhaust gas recirculation system is detected, the second engine basic parameters of the vehicle engine and the gas parameters of the exhaust gas recirculation valve are obtained, and the second duty cycle of the heater pump is determined based on the engine operating status and the gas parameters of the exhaust gas recirculation valve.

[0136] Upon detecting a heating request command from the vehicle heating system, the third duty cycle of the heater pump is determined based on the heating request command.

[0137] The target duty cycle of the warm air pump is determined based on the first duty cycle, the second duty cycle, and the third duty cycle.

[0138] The computer storage medium of this invention can be any combination of one or more computer-readable media. A computer-readable medium can be a computer-readable signal medium or a computer-readable storage medium. For example, a computer-readable storage medium can be, but is not limited to, an electrical, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or any combination thereof. More specific examples (a non-exhaustive list) of computer-readable storage media include: an electrical connection having one or more wires, a portable computer disk, a hard disk, random access memory (RAM), read-only memory (ROM), erasable programmable read-only memory (EPROM or flash memory), optical fiber, portable compact disk read-only memory (CD-ROM), optical storage device, magnetic storage device, or any suitable combination thereof. In this document, a computer-readable storage medium can be any tangible medium that contains or stores a program that can be used by or in conjunction with an instruction execution system, apparatus, or device.

[0139] Computer-readable signal media may include data signals propagated in baseband or as part of a carrier wave, carrying computer-readable program code. Such propagated data signals may take various forms, including but not limited to electromagnetic signals, optical signals, or any suitable combination thereof. Computer-readable signal media may also be any computer-readable medium other than computer-readable storage media, capable of sending, propagating, or transmitting programs for use by or in connection with an instruction execution system, apparatus, or device.

[0140] Program code contained on a computer-readable medium may be transmitted using any suitable medium, including but not limited to: wireless, wire, optical fiber, RF, etc., or any suitable combination thereof.

[0141] Computer program code for performing the operations of this invention can be written in one or more programming languages ​​or a combination thereof, including object-oriented programming languages ​​such as Java, Smalltalk, and C++, as well as conventional procedural programming languages ​​such as "C" or similar programming languages. The program code can be executed entirely on the user's computer, partially on the user's computer, as a standalone software package, partially on the user's computer and partially on a remote computer, or entirely on a remote computer or server. In cases involving remote computers, the remote computer can be connected to the user's computer via any type of mesh, including a local area network (LAN) or a wide area network (WAN), or it can be connected to an external computer (e.g., via the Internet using an Internet service provider).

[0142] Those skilled in the art will understand that the modules or steps of the present invention described above can be implemented using general-purpose computing devices. They can be centralized on a single computing device or distributed across a grid of multiple computing devices. Optionally, they can be implemented using computer-executable program code, thereby allowing them to be stored in a storage device for execution by a computing device, or they can be fabricated as separate integrated circuit modules, or multiple modules or steps can be fabricated as a single integrated circuit module. Thus, the present invention is not limited to any particular combination of hardware and software.

[0143] 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.

[0144] 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 method for controlling the heater water pump in a hybrid vehicle, characterized in that, include: When an engine cooling request is detected from the vehicle engine, the engine operating status and first engine basic parameters of the vehicle engine are obtained, and the first duty cycle of the heater pump is determined based on the engine operating status and the engine basic parameters. When a gas cooling request from the exhaust gas recirculation system is detected, the second engine basic parameters of the vehicle engine and the gas parameters of the exhaust gas recirculation valve are obtained, and the second duty cycle of the heater pump is determined based on the engine operating status and the gas parameters of the exhaust gas recirculation valve. Upon detecting a heating request command from the vehicle heating system, the third duty cycle of the heater pump is determined based on the heating request command. The target duty cycle of the warm air pump is determined based on the first duty cycle, the second duty cycle, and the third duty cycle.

2. The method according to claim 1, characterized in that, The step of determining the first duty cycle of the heater pump based on the engine operating status and the first engine basic parameters includes: When the engine is in the running state, the first duty cycle is determined by querying the first engine basic parameters in the preset first cooling chart.

3. The method according to claim 1, characterized in that, The step of determining the first duty cycle of the heater pump based on the engine operating status and the engine basic parameters further includes: When the engine is in a stopped state, the first duty cycle is determined by querying the first engine basic parameters in the preset second cooling chart.

4. The method according to claim 3, characterized in that, When the engine is in a stopped operating state, after determining the first duty cycle by querying the preset second cooling chart based on the first engine basic parameters, the process further includes: Obtain the ambient temperature and the volute temperature of the vehicle engine; The operating time of the heater pump is determined based on the ambient temperature and the volute temperature of the vehicle engine. The shutdown command for the heating water pump is determined based on the first duty cycle and the operating time of the heating water pump.

5. The method according to claim 2, characterized in that, in, The gas parameters of the exhaust gas recirculation valve include exhaust gas mass flow rate and system gas temperature; when a gas cooling request is detected in the exhaust gas recirculation system, the second engine basic parameters of the vehicle engine and the gas parameters of the exhaust gas recirculation valve are obtained, and the second duty cycle of the heater pump is determined based on the engine operating status and the gas parameters of the exhaust gas recirculation valve, including: The required duty cycle of the warm air pump is determined by querying the preset third cooling chart based on the exhaust gas mass flow rate and the system gas temperature. The required duty cycle is corrected based on the second engine's basic parameters to determine the second duty cycle.

6. The method according to claim 5, characterized in that, The second engine basic parameters include engine speed, engine load, engine ambient temperature, and engine intake air temperature; the step of correcting the required duty cycle based on the second engine basic parameters to determine the second duty cycle includes: The first correction factor is determined based on the engine speed and the engine load; The second correction factor is determined based on the engine ambient temperature and the engine intake air temperature; The demand duty cycle is adjusted based on the first correction factor and the second correction factor to determine the second duty cycle.

7. The method according to claim 1, characterized in that, Also includes: If the heater pump is detected to be in a faulty state, the engine torque limit value is determined according to the preset engine torque limit data table and the gas parameters of the exhaust gas recirculation valve. The torque of the vehicle engine is limited according to the engine torque limit value.

8. A control device for a heater water pump in a hybrid vehicle, characterized in that, include: The engine cooling demand module is used to obtain the engine operating status and first engine basic parameters of the vehicle engine when an engine cooling request is detected, and to determine the first duty cycle of the heater pump based on the engine operating status and the engine basic parameters. The exhaust gas recirculation system demand module is used to obtain the second engine basic parameters of the vehicle engine and the gas parameters of the exhaust gas recirculation valve when a gas cooling request of the exhaust gas recirculation system is detected, and to determine the second duty cycle of the heater pump based on the engine operating status and the gas parameters of the exhaust gas recirculation valve. The heating demand module is used to determine the third duty cycle of the heater pump based on the heating request command when a heating request command of the vehicle heating system is detected. The heater pump control module is used to determine the target duty cycle of the heater pump based on the first duty cycle, the second duty cycle, and the third duty cycle.

9. An electronic device, characterized in that, The electronic device includes: At least one processor; and A memory communicatively connected to the at least one processor; wherein, The memory stores a computer program that can be executed by the at least one processor, the computer program being executed by the at least one processor to enable the at least one processor to perform the control method for the heater water pump of the hybrid vehicle according to any one of claims 1-7.

10. A computer-readable storage medium, characterized in that, The computer-readable storage medium stores computer instructions that, when executed by a processor, implement the control method for the heater pump of the hybrid vehicle according to any one of claims 1-7.

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