Control method, device and equipment for warm air water pump of hybrid electric vehicle and storage medium

Abstract

The invention discloses a control method, device and equipment for a warm air water pump of a hybrid electric vehicle and a storage medium, and is characterized in that the control method comprises the following steps: under the condition that an engine cooling request of a vehicle engine is detected, acquiring an engine running state and a first engine basic parameter of the vehicle engine, the first duty ratio of the warm air water pump is determined according to the engine operation state and the engine basic parameters; under the condition that a gas cooling request of the exhaust gas recirculation system is detected, second engine basic parameters of the vehicle engine and gas parameters of the exhaust gas recirculation valve are obtained, and a second duty ratio of the warm air water pump is determined according to the engine running state and the gas parameters of the exhaust gas recirculation valve; under the condition that a heating request instruction of a vehicle heating system is detected, a third duty ratio of a warm air water pump is determined according to the heating request instruction; and the target duty ratio of the warm air water pump is determined according to the first duty ratio, the second duty ratio and the third duty ratio. And the safety and the reliability of the hybrid vehicle are improved.

Description

Technical Field

[0001] The present invention relates to the technical field of hybrid vehicle cooling, and in particular to a control method, device, equipment and storage medium for a heater water pump of a hybrid vehicle. Background Art

[0002] In hybrid vehicles, the heater water pump can usually exchange heat with the heat generated by the engine or motor, and can be used to bring the heat generated by the engine or motor into the vehicle's heating system, and heat the air conditioner in the vehicle through the heater system to meet the vehicle's heating needs. However, in hybrid vehicles, the vehicle engine and exhaust gas recirculation system will also be cooled during the heat exchange process with the heater water pump. However, in the prior art, the heater water pump usually only meets the heating needs of the heater system, and does not respond to the cooling needs of the vehicle engine and exhaust gas recirculation system. The control method of the heater water pump lacks support for the cooling needs of the vehicle engine and exhaust gas recirculation system. Summary of the invention

[0003] The present invention provides a control method, device, equipment and storage medium for a heater water pump of a hybrid vehicle to solve the technical problem that the heater water pump cannot respond to the cooling requirements of the vehicle engine and the exhaust gas recirculation system.

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

[0005] When an engine cooling request of a vehicle engine is detected, acquiring an engine operating state and a first engine basic parameter of the vehicle engine, and determining a first duty cycle of a heater water pump according to the engine operating state and the engine basic parameter;

[0006] When a gas cooling request of an exhaust gas recirculation system is detected, obtaining a second basic engine parameter of the vehicle engine and a gas parameter of an exhaust gas recirculation valve, and determining a second duty cycle of the heater water pump according to an operating state of the engine and the gas parameter of the exhaust gas recirculation valve;

[0007] When a heating request instruction of the vehicle heating system is detected, determining a third duty cycle of the heater water pump according to the heating request instruction;

[0008] A target duty cycle of the warm air water pump is determined according to 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 of a hybrid vehicle is provided, comprising:

[0010] an engine cooling requirement module, configured to, when an engine cooling request of a vehicle engine is detected, obtain an engine operating state and a first engine basic parameter of the vehicle engine, and determine a first duty cycle of a heater water pump according to the engine operating state and the engine basic parameter;

[0011] an exhaust gas recirculation system demand module, configured to obtain a second basic engine parameter of the vehicle engine and a gas parameter of the exhaust gas recirculation valve when a gas cooling request of the exhaust gas recirculation system is detected, and determine a second duty cycle of the heater water pump according to the engine operating state and the gas parameter of the exhaust gas recirculation valve;

[0012] A heating demand module, configured to determine a third duty cycle of the heater water pump according to a heating request instruction when a heating request instruction of a vehicle heating system is detected;

[0013] The heater water pump control module is used to determine a target duty cycle of the heater water pump according to 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 executable by the at least one processor, and the computer program is executed by the at least one processor so that the at least one processor can execute the method for controlling a heater water pump of a 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, wherein the computer-readable storage medium stores computer instructions, wherein the computer instructions are used to enable a processor to implement the method for controlling a heater water pump of a hybrid vehicle according to any embodiment of the present invention when executed.

[0019] The technical solution of the embodiment of the present invention is to obtain the engine operating state and the first engine basic parameters of the vehicle engine when the engine cooling request of the vehicle engine is detected, and determine the first duty cycle of the heater water pump according to the engine operating state and the engine basic parameters. The heater water pump can respond to the cooling demand of the vehicle engine, control the heater water pump according to the engine operating state and the engine basic parameters, support the cooling of the vehicle engine, improve the control accuracy of the heater water pump, and improve the safety and reliability of the hybrid vehicle engine; when the gas cooling request of 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 determine the second duty cycle of the heater water pump according to the engine operating state and the gas parameters of the exhaust gas recirculation valve. The heater water pump can respond to the cooling demand of the exhaust gas recirculation system, control the heater water pump according to the gas parameters of the exhaust gas recirculation valve and the engine basic parameters, support the cooling of the exhaust gas recirculation system, further improve the control accuracy of the heater water pump, and improve the hybrid vehicle. Safety and reliability; when a heating request instruction of the vehicle heating system is detected, the third duty cycle of the warm air water pump is determined according to the heating request instruction, the target duty cycle of the warm air water pump is determined according to the first duty cycle, the second duty cycle and the third duty cycle, and the target duty cycle of the warm air water pump is determined according to the vehicle's demand for the warm air water pump, so as to effectively meet the needs of the vehicle, improve the utilization rate of the vehicle's warm air water pump, further improve the control accuracy of the hybrid vehicle system, solve the technical problem in the prior art that the warm air water pump cannot respond to the cooling needs of the vehicle engine and the exhaust gas recirculation system, realize the participation of the warm air water pump in the cooling of the vehicle engine and the exhaust gas recirculation system, improve the utilization rate of the warm air water pump, improve the cooling efficiency of the vehicle engine and the exhaust gas recirculation system, and improve the safety and reliability of the hybrid vehicle.

[0020] It should be understood that the contents described in this section are not intended to identify the key or important features of the embodiments of the present invention, nor are they intended to limit the scope of the present invention. Other features of the present invention will become easily understood through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0022] Figure 1 A flowchart of a method for controlling a heater water pump of a hybrid vehicle is provided for the first embodiment of the present invention;

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

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

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

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

[0027] In order to enable those skilled in the art to better understand the scheme of the present invention, the technical scheme in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work 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 and claims of the present invention and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchanged where appropriate, so that the embodiments of the present invention described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units that are clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0029] Embodiment 1

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

[0031] S110 . When an engine cooling request of a vehicle engine is detected, an engine operating state and a first engine basic parameter of the vehicle engine are obtained, and a first duty cycle of a heater water pump is determined according to the engine operating state and the engine basic parameter.

[0032] The engine cooling demand may be a demand sent by the engine requesting cooling of the engine supercharger.

[0033] Among them, the engine operating state can be the operating condition of the vehicle engine, and the engine operating state includes engine running and engine stopping. The engine running can be that the vehicle engine is running and doing work, and the engine stopping can be that the vehicle engine stops running.

[0034] Among them, the first basic engine parameter 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 stopping, the volute temperature when the engine is stopped, and the engine ambient temperature.

[0035] The first duty cycle may be a duty cycle for the heater water pump to meet a cooling demand of a supercharger of a vehicle engine.

[0036] Specifically, when a supercharger of a vehicle engine needs to be cooled, an engine cooling request of the vehicle engine is generated. When the engine cooling request of the vehicle engine is detected, an engine operating state and a first engine basic parameter of the vehicle engine are obtained, and then a first duty cycle required for the heater water pump to cool the supercharger of the vehicle engine is determined according to the engine operating state and the engine basic parameters.

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

[0038] The gas cooling request may be a request information for cooling the gas in the exhaust gas recirculation system; the exhaust gas recirculation (EGR) system may be an emission control device of a vehicle, and the exhaust gas recirculation system is usually integrated into the engine as an independent subsystem. The exhaust gas recirculation system includes an exhaust gas recirculation valve, which is a component of the exhaust gas recirculation system and can control and adjust the amount of exhaust gas extracted from the exhaust manifold of the engine, and can send the exhaust gas back to the intake manifold and participate in the combustion process again.

[0039] The second engine basic parameter may include engine speed, engine load, engine ambient temperature and engine intake temperature.

[0040] The gas parameters of the exhaust gas recirculation valve may include the exhaust gas mass flow rate at the exhaust gas recirculation valve and the system gas temperature of 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 the exhaust gas mass flow rate at the exhaust gas recirculation valve is greater than a preset cooling threshold; if the exhaust gas mass flow rate at the exhaust gas recirculation valve is greater than the preset cooling mass flow rate, the system gas temperature at the exhaust gas recirculation valve is detected to determine whether the system gas temperature at the exhaust gas recirculation valve is greater than a preset cooling temperature; if the system gas temperature at the exhaust gas recirculation valve is greater than the preset cooling temperature, it means that the exhaust gas recirculation system requires a heater water pump for cooling, and a gas cooling request for the exhaust gas recirculation system is generated.

[0042] The second duty cycle may be a duty cycle for the heater water pump to meet the cooling demand of the exhaust gas recirculation system.

[0043] Specifically, when a gas cooling request for 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 gas cooling requirement of the exhaust gas recirculation system is determined according to the engine operating state and the gas parameters of the exhaust gas recirculation valve, thereby determining the second duty cycle of the heater water pump.

[0044] S130: When a heating request instruction of the vehicle heating system is detected, determine a third duty cycle of the heater water pump according to the heating request instruction.

[0045] The heating request instruction may be an instruction generated by the vehicle heating system according to the heating demand. It should be noted that the vehicle heating demand is a heating command input by the vehicle driver through the vehicle computer system, and the vehicle computer system determines the corresponding heating demand according to the heating instruction and sends the heating demand to the vehicle heating system. The heating demand may be transmitted through the vehicle's CAN (Controller Area Network) bus.

[0046] The third duty cycle may be a duty cycle for the heater water pump to meet the requirements of the vehicle heating system.

[0047] Specifically, the vehicle heating system determines a heating request instruction according to the heating demand of the vehicle driver, and determines the third duty cycle of the heater water pump according to the heating request instruction.

[0048] S140: Determine a target duty cycle of the warm air water pump according to the first duty cycle, the second duty cycle, and the third duty cycle.

[0049] The target duty cycle may be a final duty cycle of the heater water pump to meet demand.

[0050] Specifically, after the first duty cycle, the second duty cycle and the third duty cycle are obtained, a 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 water pump.

[0051] The technical solution of the embodiment of the present invention is to obtain the engine operating state and the first engine basic parameters of the vehicle engine when the engine cooling request of the vehicle engine is detected, and determine the first duty cycle of the heater water pump according to the engine operating state and the engine basic parameters. The heater water pump can respond to the cooling demand of the vehicle engine, control the heater water pump according to the engine operating state and the engine basic parameters, support the cooling of the vehicle engine, improve the control accuracy of the heater water pump, and improve the safety and reliability of the hybrid vehicle engine; when the gas cooling request of 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 determine the second duty cycle of the heater water pump according to the engine operating state and the gas parameters of the exhaust gas recirculation valve. The heater water pump can respond to the cooling demand of the exhaust gas recirculation system, control the heater water pump according to the gas parameters of the exhaust gas recirculation valve and the engine basic parameters, support the cooling of the exhaust gas recirculation system, further improve the control accuracy of the heater water pump, and improve the hybrid vehicle. Safety and reliability; when a heating request instruction of the vehicle heating system is detected, the third duty cycle of the warm air water pump is determined according to the heating request instruction, the target duty cycle of the warm air water pump is determined according to the first duty cycle, the second duty cycle and the third duty cycle, and the target duty cycle of the warm air water pump is determined according to the vehicle's demand for the warm air water pump, so as to effectively meet the needs of the vehicle, improve the utilization rate of the vehicle's warm air water pump, further improve the control accuracy of the hybrid vehicle system, solve the technical problem in the prior art that the warm air water pump cannot respond to the cooling needs of the vehicle engine and the exhaust gas recirculation system, realize the participation of the warm air water pump in the cooling of the vehicle engine and the exhaust gas recirculation system, improve the utilization rate of the warm air water pump, improve the cooling efficiency of the vehicle engine and the exhaust gas recirculation system, and improve the safety and reliability of the hybrid vehicle.

[0052] Figure 2This is a flow chart of another method for controlling a heater water pump of a hybrid vehicle provided by an embodiment of the present invention. The relationship between this embodiment and the above-mentioned embodiment is to illustrate a specific method for determining the demand of the vehicle engine for the heater water pump according to the engine operating state of the vehicle engine and the first basic engine parameter. Figure 2 As shown, the method includes:

[0053] S210: When an engine cooling request of a vehicle engine is detected, obtain an engine operating state and a first engine basic parameter of the vehicle engine.

[0054] S220: When the engine operating state is engine running, query the first engine basic parameters in a preset first cooling chart to determine the first duty cycle.

[0055] The preset first cooling chart may be a two-dimensional chart pre-set to determine the duty ratio of the cooling demand of the vehicle engine during operation to the demand of the heater water pump. It should be noted that the first cooling chart may be a two-dimensional chart formed according to the water temperature when the engine is running and the exhaust temperature of the engine, the water temperature when the engine is running and the exhaust temperature of the engine are used as variables of the two-dimensional chart, and the intersection of the two variables is used as the duty ratio of the demand of the heater water pump.

[0056] Specifically, when the engine operating state is the engine running, a query is performed in a preset first cooling chart through the water temperature when the engine is running and the exhaust temperature of the engine, and the required duty cycle obtained by the query is determined as the first duty cycle.

[0057] Optionally, in another optional embodiment of the present invention, the first duty cycle of the heater water pump is determined according to the engine operating state and the engine basic parameters, further comprising:

[0058] When the engine operating state is engine shutdown, a query is performed in a preset second cooling chart according to the first engine basic parameter to determine the first duty cycle.

[0059] The preset second cooling chart may be a two-dimensional chart pre-set to determine the duty ratio of the cooling demand of the vehicle engine during shutdown for the heater water pump. It should be noted that the second cooling chart may be a two-dimensional chart formed according to the water temperature when the engine is shut down and the exhaust temperature when the engine is shut down, the water temperature when the engine is running and the exhaust temperature when the engine is shut down are used as variables of the two-dimensional chart, and the intersection of the two variables is used as the duty ratio of the heater water pump.

[0060] Specifically, when the engine operating state is engine shutdown, the water temperature when the engine is running and the exhaust temperature when the engine is shut down are queried in a preset second cooling chart, and the required duty cycle obtained by the query is determined as the first duty cycle.

[0061] Optionally, in another optional embodiment of the present invention, when the engine operating state is engine shutdown, querying the first engine basic parameter in a preset second cooling chart to determine the first duty cycle further includes:

[0062] Acquiring an engine ambient temperature and a volute temperature of the vehicle engine;

[0063] determining the operation time of the heater water pump according to the engine ambient temperature and the volute temperature of the vehicle engine;

[0064] A shutdown operation instruction corresponding to the heater water pump is determined according to the first duty cycle and the operation time of the heater water pump.

[0065] The engine ambient temperature may be the ambient temperature of the vehicle engine; and the volute temperature of the vehicle engine may be the temperature of the casing of the vehicle engine.

[0066] The running time may be the time that the heater water 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 stopping, the cooling demand of the engine has a certain time limit. The running time can be calculated by the volute temperature when the engine is stopped and the ambient temperature of the environment in which the engine is located to determine the running time that the heater water pump needs to run. After the heater water pump runs for a corresponding running time, the heater water pump can stop running.

[0067] The shutdown operation instruction may be an instruction to control the heater water pump to stop running.

[0068] Specifically, when the engine is stopped, the engine supercharger is cooled by the heater water pump. After determining a first duty cycle of the heater water pump, the engine ambient temperature and the volute temperature of the vehicle engine are obtained, and the operating time of the heater water pump is determined according to the engine ambient temperature and the volute temperature of the vehicle engine. After the actual operating time of the heater water pump meets the operating time, a shutdown operating instruction corresponding to the heater water pump is determined according to the first duty cycle and the operating time of the heater water pump, and the heater water pump is controlled to stop operating through the shutdown operating instruction.

[0069] Optionally, when the engine is stopped and the engine supercharger is cooled by the warm air water pump, if the engine is started again, the engine cooling demand is based on the engine operating state. When the engine is running, the water temperature when the engine is running and the exhaust temperature of the engine are queried in a preset first cooling chart, and the demand duty cycle obtained by the query is determined as the first duty cycle.

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

[0071] S240: When a heating request instruction of the vehicle heating system is detected, determine a third duty cycle of the heater water pump according to the heating request instruction.

[0072] The technical solution of the embodiment of the present invention is to obtain the engine operating state and the first engine basic parameters of the vehicle engine when the engine cooling request of the vehicle engine is detected, and determine the first duty cycle of the heater water pump according to the engine operating state and the engine basic parameters. The heater water pump can respond to the cooling demand of the vehicle engine, control the heater water pump according to the engine operating state and the engine basic parameters, support the cooling of the vehicle engine, improve the control accuracy of the heater water pump, and improve the safety and reliability of the hybrid vehicle engine; when the gas cooling request of 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 determine the second duty cycle of the heater water pump according to the engine operating state and the gas parameters of the exhaust gas recirculation valve. The heater water pump can respond to the cooling demand of the exhaust gas recirculation system, control the heater water pump according to the gas parameters of the exhaust gas recirculation valve and the engine basic parameters, support the cooling of the exhaust gas recirculation system, further improve the control accuracy of the heater water pump, and improve the hybrid vehicle. Safety and reliability; when a heating request instruction of the vehicle heating system is detected, the third duty cycle of the warm air water pump is determined according to the heating request instruction, the target duty cycle of the warm air water pump is determined according to the first duty cycle, the second duty cycle and the third duty cycle, and the target duty cycle of the warm air water pump is determined according to the vehicle's demand for the warm air water pump, so as to effectively meet the needs of the vehicle, improve the utilization rate of the vehicle's warm air water pump, further improve the control accuracy of the hybrid vehicle system, solve the technical problem in the prior art that the warm air water pump cannot respond to the cooling needs of the vehicle engine and the exhaust gas recirculation system, realize the participation of the warm air water pump in the cooling of the vehicle engine and the exhaust gas recirculation system, improve the utilization rate of the warm air water pump, improve the cooling efficiency of the vehicle engine and the exhaust gas recirculation system, and improve the safety and reliability of the hybrid vehicle.

[0073] Figure 3 This is a flow chart of another method for controlling a heater water pump of a hybrid vehicle provided by an embodiment of the present invention. The relationship between this embodiment and the above embodiment is to illustrate how to determine the cooling requirement of the exhaust gas recirculation system for the heater water pump. Figure 3 As shown, the method includes:

[0074] S310: When an engine cooling request of a vehicle engine is detected, an engine operating state and a first engine basic parameter of the vehicle engine are obtained, and a first duty cycle of a heater water pump is determined according to the engine operating state and the engine basic parameter.

[0075] S320 , determining a demand duty cycle of the heater water pump by querying a preset third cooling chart according to the exhaust gas mass flow rate and the system gas temperature.

[0076] The third cooling chart may be a two-dimensional chart pre-set to determine the duty ratio of the demand for the heater water pump in the exhaust gas recirculation system. It should be noted that the third cooling chart may be a two-dimensional chart formed according to the exhaust gas mass flow rate and the system gas temperature, the exhaust gas mass flow rate and the system gas temperature are used as variables of the two-dimensional chart, and the intersection of the two variables is used as the duty ratio of the demand for the heater water pump.

[0077] The demand duty cycle may be a duty cycle for demanding the operation of the heater water pump.

[0078] Specifically, a query is performed in a preset third cooling chart based on the exhaust gas mass flow rate and the system gas temperature, and the intersection of the exhaust gas mass flow rate and the system gas temperature in the third cooling chart is used as the demand duty cycle of the heater water pump.

[0079] S330. Correct the required duty cycle according to the second engine basic parameters 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 demand duty cycle of the exhaust gas recirculation system for the heater water pump, the demand duty cycle is corrected by the second engine basic parameter 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 according to the second engine basic parameter to determine the second duty cycle includes:

[0082] determining a first correction factor according to the engine speed and the engine load;

[0083] determining a second correction factor according to the engine ambient temperature and the engine intake air temperature;

[0084] The required duty cycle is corrected according to the first correction factor and the second correction factor to determine the second duty cycle.

[0085] Among them, the first correction factor and the second correction factor can be coefficients for correcting the demand duty cycle of the exhaust gas recirculation system for the heater water pump; the first correction factor is determined by the engine speed and the engine load, and in a pre-set two-dimensional chart of the first correction factor, the engine speed and the engine load are queried to obtain the first correction factor; the second correction factor is determined by the engine ambient temperature and the engine intake temperature, and in a pre-set two-dimensional chart of the second correction factor, the engine ambient temperature and the engine intake temperature are queried to obtain the second correction factor.

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

[0087] S340: When a heating request instruction of the vehicle heating system is detected, determine a third duty cycle of the heater water pump according to the heating request instruction.

[0088] S350: Determine a target duty cycle of the warm air water pump according to the first duty cycle, the second duty cycle, and the third duty cycle.

[0089] Optionally, in another optional embodiment of the present invention, when it is detected that the heater water pump is 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] The fault state may be that the heater water pump cannot be controlled. For example, when the vehicle controls the heater water pump via the CAN bus, a feedback signal from the heater water pump cannot be received or the feedback signal from the heater water pump is lost.

[0091] The engine torque limit value may be a value that limits the engine torque, and the engine torque limit value may effectively protect the vehicle engine.

[0092] The engine torque limit data table may be a two-dimensional chart pre-set for determining the vehicle engine torque limit value. It should be noted that the engine torque limit data table may be a two-dimensional chart constructed based on the exhaust gas mass flow rate and the system gas temperature, with the exhaust gas mass flow rate and the system gas temperature being used as variables of the two-dimensional chart, and the intersection of the two variables being used as the engine torque limit value of the heater water pump.

[0093] Specifically, when it is detected that the heater water pump is in a faulty state, the engine torque limit value is determined by querying the engine torque limit data table through the exhaust gas mass flow rate and the system gas temperature, and the vehicle engine is torque limited according to the engine torque limit value.

[0094] Optionally, after the vehicle engine is torque limited by the engine torque limit value, the current torque limit state of the vehicle engine is reported to the VCU (Vehicle Control Unit), and the VCU determines the required torque value to be issued to the engine according to the reported torque capacity.

[0095] The technical solution of the embodiment of the present invention is to obtain the engine operating state and the first engine basic parameters of the vehicle engine when the engine cooling request of the vehicle engine is detected, and determine the first duty cycle of the heater water pump according to the engine operating state and the engine basic parameters. The heater water pump can respond to the cooling demand of the vehicle engine, control the heater water pump according to the engine operating state and the engine basic parameters, support the cooling of the vehicle engine, improve the control accuracy of the heater water pump, and improve the safety and reliability of the hybrid vehicle engine; when the gas cooling request of 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 determine the second duty cycle of the heater water pump according to the engine operating state and the gas parameters of the exhaust gas recirculation valve. The heater water pump can respond to the cooling demand of the exhaust gas recirculation system, control the heater water pump according to the gas parameters of the exhaust gas recirculation valve and the engine basic parameters, support the cooling of the exhaust gas recirculation system, further improve the control accuracy of the heater water pump, and improve the hybrid vehicle. Safety and reliability; when a heating request instruction of the vehicle heating system is detected, the third duty cycle of the warm air water pump is determined according to the heating request instruction, the target duty cycle of the warm air water pump is determined according to the first duty cycle, the second duty cycle and the third duty cycle, and the target duty cycle of the warm air water pump is determined according to the vehicle's demand for the warm air water pump, so as to effectively meet the needs of the vehicle, improve the utilization rate of the vehicle's warm air water pump, further improve the control accuracy of the hybrid vehicle system, solve the technical problem in the prior art that the warm air water pump cannot respond to the cooling needs of the vehicle engine and the exhaust gas recirculation system, realize the participation of the warm air water pump in the cooling of the vehicle engine and the exhaust gas recirculation system, improve the utilization rate of the warm air water pump, improve the cooling efficiency of the vehicle engine and the exhaust gas recirculation system, and improve the safety and reliability of the hybrid vehicle.

[0096] Figure 4 The present invention provides a schematic diagram of the structure of a control device for a heater water pump of a hybrid vehicle. 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 requirement module 410 is used to obtain an engine operating state and a first engine basic parameter of the vehicle engine when an engine cooling request of the vehicle engine is detected, and determine a first duty cycle of the heater water pump according to the engine operating state and the engine basic parameter;

[0098] an exhaust gas recirculation system demand module 420, configured to obtain a second basic engine parameter of the vehicle engine and a gas parameter of the exhaust gas recirculation valve when a gas cooling request of the exhaust gas recirculation system is detected, and determine a second duty cycle of the heater water pump according to the engine operating state and the gas parameter of the exhaust gas recirculation valve;

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

[0100] The heater water pump control module 440 is configured to determine a target duty cycle of the heater water pump according to the first duty cycle, the second duty cycle, and the third duty cycle.

[0101] The technical solution of the embodiment of the present invention is to obtain the engine operating state and the first engine basic parameters of the vehicle engine when the engine cooling request of the vehicle engine is detected, and determine the first duty cycle of the heater water pump according to the engine operating state and the engine basic parameters. The heater water pump can respond to the cooling demand of the vehicle engine, control the heater water pump according to the engine operating state and the engine basic parameters, support the cooling of the vehicle engine, improve the control accuracy of the heater water pump, and improve the safety and reliability of the hybrid vehicle engine; when the gas cooling request of 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 determine the second duty cycle of the heater water pump according to the engine operating state and the gas parameters of the exhaust gas recirculation valve. The heater water pump can respond to the cooling demand of the exhaust gas recirculation system, control the heater water pump according to the gas parameters of the exhaust gas recirculation valve and the engine basic parameters, support the cooling of the exhaust gas recirculation system, further improve the control accuracy of the heater water pump, and improve the hybrid vehicle. Safety and reliability; when a heating request instruction of the vehicle heating system is detected, the third duty cycle of the warm air water pump is determined according to the heating request instruction, the target duty cycle of the warm air water pump is determined according to the first duty cycle, the second duty cycle and the third duty cycle, and the target duty cycle of the warm air water pump is determined according to the vehicle's demand for the warm air water pump, so as to effectively meet the needs of the vehicle, improve the utilization rate of the vehicle's warm air water pump, further improve the control accuracy of the hybrid vehicle system, solve the technical problem in the prior art that the warm air water pump cannot respond to the cooling needs of the vehicle engine and the exhaust gas recirculation system, realize the participation of the warm air water pump in the cooling of the vehicle engine and the exhaust gas recirculation system, improve the utilization rate of the warm air water pump, improve the cooling efficiency of the vehicle engine and the exhaust gas recirculation system, and improve the safety and reliability of the hybrid vehicle.

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

[0103] When the engine operating state is engine running, a query is performed in a preset first cooling chart according to the first engine basic parameter to determine the first duty cycle.

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

[0105] When the engine operating state is engine shutdown, a query is performed in a preset second cooling chart according to the first engine basic parameter to determine the first duty cycle.

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

[0107] Acquiring an ambient temperature and a volute temperature of the vehicle engine;

[0108] determining the operation time of the heater water pump according to the ambient temperature and the volute temperature of the vehicle engine;

[0109] A shutdown operation instruction corresponding to the heater water pump is determined according to the first duty cycle and the operation time of the heater water pump.

[0110] Optionally, the exhaust gas recirculation system demand module is specifically used to:

[0111] determining a demand duty cycle of the heater water pump by querying a preset third cooling chart according to the exhaust gas mass flow rate and the system gas temperature;

[0112] The required duty cycle is corrected according to the second engine basic parameter to determine the second duty cycle.

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

[0114] determining a first correction factor according to the engine speed and the engine load;

[0115] determining a second correction factor according to the engine ambient temperature and the engine intake air temperature;

[0116] The required duty cycle is corrected according to the first correction factor and the second correction factor to determine the second duty cycle.

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

[0118] The fault detection module is used to determine the engine torque limit value according to a preset engine torque limit data table and the gas parameters of the exhaust gas recirculation valve when detecting that the heater water pump is 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 water pump of a hybrid vehicle provided by the embodiment of the present invention can execute the control method for the heater water pump of a hybrid vehicle provided by any embodiment of the present invention, and has the corresponding functional modules and beneficial effects of the execution method.

[0121] 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. 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 processing, cellular phones, smart phones, wearable devices (such as helmets, glasses, watches, etc.) and other similar computing devices. The components shown herein, their connections and relationships, and their modes are merely examples and are not intended to limit the implementation of the present invention described and / or required herein.

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

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

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

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

[0126] Various implementations 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 chips (SOCs), load programmable logic devices (CPLDs), computer hardware, firmware, software, and / or combinations thereof. These various implementations can include: being implemented in one or more computer programs that can be executed and / or interpreted on a programmable system including at least one programmable processor, which can be a special purpose or general purpose programmable processor that can receive data and instructions from a storage system, at least one input device, and at least one output device, and transmit data and instructions to the storage system, the at least one input device, and the at least one output device.

[0127] Computer programs for implementing the methods of the present invention may be written in any combination of one or more programming languages. These computer programs may be provided to a processor of a general-purpose computer, a special-purpose computer, or other programmable data processing device, so that when the computer program is executed by the processor, the modes / operations specified in the flow chart and / or block diagram are implemented. The computer program may be executed entirely on the machine, partially on the machine, partially on the machine and partially on a remote machine as a stand-alone software package, or entirely on a remote machine or server.

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

[0129] To provide interaction with a user, the systems and techniques described herein may 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 a pointing device (e.g., a mouse or trackball) through which the user can provide input to the electronic device. Other types of devices may also be used to provide interaction with the user; for example, the feedback provided to the user may be any form of sensory feedback (e.g., visual feedback, auditory feedback, or tactile feedback); and input from the user may be received in any form (including acoustic input, voice input, or tactile input).

[0130] The systems and techniques described herein can be implemented in a computing system that includes backend components (e.g., as a data server), or a computing system that includes middleware components (e.g., an application server), or a computing system that includes frontend components (e.g., a user computer with a graphical user interface or a grid browser through which a user can interact with implementations of the systems and techniques described herein), or a computing system that includes any combination of such backend components, middleware components, or frontend components. The components of the system can be interconnected by any form or medium of digital data communication (e.g., a communication grid). Examples of communication grids include: a local area network (LAN), a wide area network (WAN), a blockchain grid, and the Internet.

[0131] A computing system may include a client and a server. The client and the server are generally remote from each other and usually interact through a communication grid. The client and server relationship is generated by computer programs running on the respective computers and having a client-server relationship with each other. The server may be a cloud server, also known as a cloud computing server or cloud host, which is a host product in the cloud computing service system to solve the defects of difficult management and weak business scalability in traditional physical hosts and VPS services.

[0132] It should be understood that the various forms of processes shown above can be used to reorder, add or delete steps. For example, the steps described in the present invention can be executed in parallel, sequentially or in different orders, as long as the desired results of the technical solution of the present invention can be achieved, and this document does not limit this.

[0133] This embodiment provides a computer-readable storage medium having a computer program stored thereon. When the program is executed by a processor, the steps of a method for controlling a heater water pump of a hybrid vehicle provided in any embodiment of the present invention are implemented. The method includes:

[0134] When an engine cooling request of a vehicle engine is detected, acquiring an engine operating state and a first engine basic parameter of the vehicle engine, and determining a first duty cycle of a heater water pump according to the engine operating state and the engine basic parameter;

[0135] When a gas cooling request of an exhaust gas recirculation system is detected, obtaining a second basic engine parameter of the vehicle engine and a gas parameter of an exhaust gas recirculation valve, and determining a second duty cycle of the heater water pump according to an operating state of the engine and the gas parameter of the exhaust gas recirculation valve;

[0136] When a heating request instruction of the vehicle heating system is detected, determining a third duty cycle of the heater water pump according to the heating request instruction;

[0137] A target duty cycle of the warm air water pump is determined according to the first duty cycle, the second duty cycle, and the third duty cycle.

[0138] The computer storage medium of the embodiment of the present invention can adopt any combination of one or more computer-readable media. The computer-readable medium can be a computer-readable signal medium or a computer-readable storage medium. The computer-readable storage medium can be, for example, but not limited to: an electrical, magnetic, optical, electromagnetic, infrared, or semiconductor system, device or device, or any combination of the above. More specific examples (non-exhaustive list) of computer-readable storage media include: an electrical connection with one or more wires, a portable computer disk, a hard disk, a random access memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber, a portable compact disk read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the above. In this document, a computer-readable storage medium can be any tangible medium containing or storing a program, which can be used by an instruction execution system, device or device or used in combination with it.

[0139] Computer-readable signal media may include data signals propagated in baseband or as part of a carrier wave, which carry computer-readable program code. Such propagated data signals may take a variety of forms, including but not limited to electromagnetic signals, optical signals, or any suitable combination of the above. Computer-readable signal media may also be any computer-readable medium other than a computer-readable storage medium, which may send, propagate, or transmit a program for use by or in conjunction with an instruction execution system, apparatus, or device.

[0140] The program code embodied on the computer readable medium may be transmitted using any appropriate medium, including but not limited to wireless, wireline, optical fiber cable, RF, etc., or any suitable combination of the foregoing.

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

[0142] It should be understood by those skilled in the art that the above modules or steps of the present invention can be implemented by a general-purpose computing device, they can be concentrated on a single computing device, or distributed on a grid composed of multiple computing devices, optionally, they can be implemented by a program code executable by a computer device, so that they can be stored in a storage device and executed by the computing device, or they can be made into individual integrated circuit modules, or multiple modules or steps therein can be made into a single integrated circuit module for implementation. Thus, the present invention is not limited to any specific combination of hardware and software.

[0143] It should be understood that the various forms of processes shown above can be used to reorder, add or delete steps. For example, the steps described in the present invention can be executed in parallel, sequentially or in different orders, as long as the desired results of the technical solution of the present invention can be achieved, and this document does not limit this.

[0144] The above specific implementations do not constitute a limitation on the protection scope of the present invention. It should be understood by those skilled in the art that various modifications, combinations, sub-combinations and substitutions can be made according to design requirements and other factors. Any modification, equivalent substitution and improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A method for controlling a heater water pump of a hybrid vehicle, characterized in that: include: When an engine cooling request of a vehicle engine is detected, acquiring an engine operating state and a first engine basic parameter of the vehicle engine, and determining a first duty cycle of a heater water pump according to the engine operating state and the engine basic parameter; When a gas cooling request of an exhaust gas recirculation system is detected, obtaining a second basic engine parameter of the vehicle engine and a gas parameter of an exhaust gas recirculation valve, and determining a second duty cycle of the heater water pump according to an operating state of the engine and the gas parameter of the exhaust gas recirculation valve; When a heating request instruction of the vehicle heating system is detected, determining a third duty cycle of the heater water pump according to the heating request instruction; A target duty cycle of the warm air water pump is determined according to the first duty cycle, the second duty cycle, and the third duty cycle.

2. The method according to claim 1, characterized in that The method of determining a first duty cycle of a heater water pump according to the engine operating state and the first engine basic parameter comprises: When the engine operating state is engine running, a query is performed in a preset first cooling chart according to the first engine basic parameter to determine the first duty cycle.

3. The method according to claim 1, characterized in that The first duty cycle of the heater water pump is determined according to the engine operating state and the basic parameters of the engine, and further includes: When the engine operating state is engine shutdown, a query is performed in a preset second cooling chart according to the first engine basic parameter to determine the first duty cycle.

4. The method according to claim 3, characterized in that When the engine operation state is engine shutdown, querying a preset second cooling chart according to the first engine basic parameter to determine the first duty cycle further includes: Acquiring an ambient temperature and a volute temperature of the vehicle engine; determining the operation time of the heater water pump according to the ambient temperature and the volute temperature of the vehicle engine; A shutdown operation instruction corresponding to the heater water pump is determined according to the first duty cycle and the operation time of the heater 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 and system gas temperature; when the gas cooling request of 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 water pump is determined according to the engine operating state and the gas parameters of the exhaust gas recirculation valve, including: determining a demand duty cycle of the heater water pump by querying a preset third cooling chart according to the exhaust gas mass flow rate and the system gas temperature; The required duty cycle is corrected according to the second engine basic parameter 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 temperature; and the step of correcting the required duty cycle according to the second engine basic parameters to determine the second duty cycle includes: determining a first correction factor according to the engine speed and the engine load; determining a second correction factor according to the engine ambient temperature and the engine intake air temperature; The required duty cycle is corrected according to 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: When it is detected that the heater water pump is in a faulty state, determining the engine torque limit value according to a preset engine torque limit data table and the gas parameters of the exhaust gas recirculation valve; The vehicle engine is torque limited according to the engine torque limit value.

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

9. An electronic device, characterized in that: The electronic device comprises: at least one processor; and a memory communicatively connected to the at least one processor; wherein, The memory stores a computer program executable by the at least one processor, and the computer program is executed by the at least one processor so that the at least one processor can execute the method for controlling a heater water pump of a hybrid vehicle according to any one of claims 1 to 7.

10. A computer-readable storage medium, characterized in that: The computer-readable storage medium stores computer instructions, and the computer instructions are used to enable a processor to implement the method for controlling a heater water pump of a hybrid vehicle according to any one of claims 1 to 7 when the processor executes the instructions.

Images