CN109057940B

CN109057940B - Automobile water pump control method, device, system and controller

Info

Publication number: CN109057940B
Application number: CN201810822689.4A
Authority: CN
Inventors: 程远; 王晓丽; 云非; 鲍帅华; 张贵强; 汪名月; 赵福成; 王瑞平
Original assignee: Yiwu Geely Engine Co ltd; Zhejiang Geely Holding Group Co Ltd
Current assignee: Zhejiang Geely Holding Group Co Ltd; Yiwu Geely Powertrain Co Ltd
Priority date: 2018-07-24
Filing date: 2018-07-24
Publication date: 2020-09-11
Anticipated expiration: 2038-07-24
Also published as: CN109057940A

Abstract

The invention provides an automobile water pump control method, an automobile water pump control device, an automobile water pump control system and a controller, and relates to the technical field of new energy automobiles, wherein the automobile water pump control method comprises the steps of obtaining temperature information of a current automobile, wherein the temperature information comprises the temperature of cooling liquid and the temperature of the surrounding environment; acquiring the working condition state of the current engine; and adjusting the water pump according to the temperature information of the current vehicle and the working condition state of the current engine. In the technical scheme of the invention, the operation condition and the temperature condition of the engine are comprehensively considered, and the water pump is controlled to provide circulating power for the cooling liquid according to the operation condition and the temperature condition, namely, the water pump is regulated and controlled according to the actual requirement, so that the water pump is prevented from being always in high-power consumption, the optimal regulation and control can be achieved in different working condition scenes as far as possible, and the emission of the whole engine and the consumption of fuel oil are further effectively reduced.

Description

Automobile water pump control method, device, system and controller

Technical Field

The invention relates to the technical field of new energy automobiles, in particular to an automobile water pump control method, device, system and controller.

Background

With the improvement of national emission standards and the wide application of new energy technology on the traditional engine, the electronic water pump is applied to the traditional engine more and more, and not only can be used as an auxiliary electronic water pump to cool one or two subsystems, but also can be used as a main water pump to provide power for the circulation of the cooling liquid of the whole engine.

The existing water pump control is mainly adjusted and controlled according to the temperature of cooling liquid, the adjusting mode is single, optimal regulation and control in different working condition scenes are difficult to achieve, and therefore the emission of the whole machine and the consumption of fuel oil are increased.

Disclosure of Invention

In view of the above, the present invention provides a method, an apparatus, a system and a controller for controlling an automobile water pump, so as to comprehensively consider the operation condition and the temperature condition of an engine, control the water pump to provide circulating power for a coolant according to the operation condition and the temperature condition, and achieve optimal regulation and control in different conditions as much as possible, thereby effectively reducing the discharge of the whole engine and the consumption of fuel.

In a first aspect, an embodiment of the present invention provides a method for controlling an automobile water pump, including:

acquiring temperature information of a current vehicle, wherein the temperature information comprises the temperature of cooling liquid and the temperature of the surrounding environment;

acquiring the working condition state of the current engine;

and adjusting the water pump according to the current temperature information of the vehicle and the current working condition state of the engine.

With reference to the first aspect, an embodiment of the present invention provides a first possible implementation manner of the first aspect, where the operating condition state includes a cold start state;

according to the temperature information of the current vehicle and the working condition state of the current engine, the water pump is adjusted to include:

and when the working condition state of the current engine is detected to be in a cold starting state, the temperature of the cooling liquid is less than or equal to a first threshold value, and the temperature of the surrounding environment is less than or equal to an environment low threshold value, controlling the water pump to stop running.

With reference to the first aspect, an embodiment of the present invention provides a second possible implementation manner of the first aspect, where the operating condition state includes a high load state;

and when the current working condition state of the engine is detected to be in a high load state, the temperature of the cooling liquid is greater than or equal to a second threshold value and less than or equal to a third threshold value, and the temperature of the surrounding environment is greater than an environment low threshold value and less than an environment high threshold value, controlling the water pump to operate according to a set rotating speed.

With reference to the first aspect, an embodiment of the present invention provides a third possible implementation manner of the first aspect, where the operating condition state includes a shutdown state; the temperature information further includes an exhaust temperature;

and when the current working condition state of the engine is detected to be in a stop state, the temperature of the cooling liquid is greater than a third threshold value, and the temperature of the surrounding environment is greater than an environment high threshold value, controlling the water pump to continuously run for a preset time according to the set rotating speed according to the exhaust temperature.

With reference to the first aspect, an embodiment of the present invention provides a fourth possible implementation manner of the first aspect, where the operating condition state includes an idle start-stop state;

and when the current working condition state of the engine is detected to be in an idling starting and stopping state, the temperature of the cooling liquid is greater than or equal to a second threshold value and less than or equal to a third threshold value, and the water pump is controlled to operate according to a set rotating speed so as to cool the motor.

With reference to the first aspect, an embodiment of the present invention provides a fifth possible implementation manner of the first aspect, where the method further includes:

when the water pump is detected to be out of order, a correction instruction is sent to the water pump to remove the failure.

In a second aspect, an embodiment of the present invention further provides an automobile water pump control device, including:

the temperature acquisition module is used for acquiring the temperature information of the current vehicle, wherein the temperature information comprises the temperature of the cooling liquid and the temperature of the surrounding environment;

the state acquisition module is used for acquiring the working condition state of the current engine;

and the water pump adjusting module is used for adjusting the water pump according to the temperature information of the current vehicle and the working condition state of the current engine.

With reference to the second aspect, an embodiment of the present invention provides a first possible implementation manner of the second aspect, where the operating condition state includes an idle start-stop state;

the water pump regulating module is also used for: and when the current working condition state of the engine is detected to be in an idling starting and stopping state, the temperature of the cooling liquid is greater than or equal to a second threshold value and less than or equal to a third threshold value, and the water pump is controlled to operate according to a set rotating speed so as to cool the motor.

In a third aspect, an embodiment of the present invention further provides an automobile water pump control system, including a controller, an engine, a liquid temperature sensor, an ambient temperature sensor, a water pump, and an expansion tank;

the expansion kettle, the water pump and the engine are sequentially connected through a water pipe to form a cooling liquid circulation loop;

the controller comprises the automobile water pump control device according to the second aspect and any one of the possible embodiments thereof, and is in communication connection with the water pump, the liquid temperature sensor and the ambient temperature sensor; the liquid temperature sensor is used for detecting the temperature of cooling liquid in the water pipe, and the environment temperature sensor is used for detecting the temperature of the surrounding environment.

In a fourth aspect, an embodiment of the present invention further provides a controller, which includes a memory and a processor, where the memory stores a computer program that is executable on the processor, and the processor executes the computer program to implement the method according to the first aspect and any possible implementation manner thereof.

The embodiment of the invention has the following beneficial effects:

in the embodiment of the invention, the control method of the automobile water pump comprises the steps of obtaining temperature information of a current vehicle, wherein the temperature information comprises the temperature of cooling liquid and the temperature of the surrounding environment; acquiring the working condition state of the current engine; and adjusting the water pump according to the temperature information of the current vehicle and the working condition state of the current engine. In the technical scheme of the invention, the operation condition and the temperature condition of the engine are comprehensively considered, and the water pump is controlled to provide circulating power for the cooling liquid according to the operation condition and the temperature condition, namely, the water pump is regulated and controlled according to the actual requirement, so that the water pump is prevented from being always in high-power consumption, the optimal regulation and control can be achieved in different working condition scenes as far as possible, and the emission of the whole engine and the consumption of fuel oil are further effectively reduced.

Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. The objectives and other advantages of the invention will be realized and attained by the structure particularly pointed out in the written description and claims hereof as well as the appended drawings.

In order to make the aforementioned and other objects, features and advantages of the present invention comprehensible, preferred embodiments accompanied with figures are described in detail below.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.

FIG. 1 is a schematic flow chart of a method for controlling a water pump of an automobile according to an embodiment of the present invention;

FIG. 2 is a schematic structural diagram of an automotive water pump control device according to an embodiment of the present invention;

FIG. 3 is a schematic diagram of communication connection of an automobile water pump control system according to an embodiment of the present invention;

FIG. 4 is a schematic diagram of a water circulation structure of an automobile water pump control system according to an embodiment of the present invention;

fig. 5 is a schematic structural diagram of a controller according to an embodiment of the present invention.

Icon:

11-a temperature acquisition module; 12-a state acquisition module; 13-a water pump regulating module; 100-a controller; 200-an engine; 300-liquid temperature sensor; 400-ambient temperature sensor; 500-a water pump; 600-an expansion kettle; 700-warming up; 800-thermostat; 900-a heat sink; 40-a processor; 41-a memory; 42-a bus; 43-communication interface.

Detailed Description

To make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings, and it is apparent that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

The existing water pump control is mainly adjusted and controlled according to the temperature of cooling liquid, the adjusting mode is single, optimal regulation and control in different working condition scenes are difficult to achieve, and therefore the emission of the whole machine and the consumption of fuel oil are increased. Based on the above, the method, the device, the system and the controller for controlling the water pump of the automobile provided by the embodiment of the invention comprehensively consider the operation condition and the temperature condition of the engine, control the water pump to provide circulating power for the cooling liquid according to the operation condition and the temperature condition, and achieve optimal regulation and control in different working condition scenes as far as possible, thereby effectively reducing the discharge amount of the whole engine and the consumption amount of fuel oil.

In order to facilitate understanding of the embodiment, a detailed description will be first given of a control method of an automobile water pump disclosed in the embodiment of the present invention. The vehicle Control method may be, but not limited to, applied to a controller of a hybrid vehicle, such as a vehicle controller, an ECU (Electronic Control Unit), and the like, and is implemented by related hardware or software.

Fig. 1 shows a schematic flow chart of a control method of an automobile water pump provided in an embodiment of the present invention, and as shown in fig. 1, the control method of the automobile water pump includes:

step S101, acquiring temperature information of the current vehicle, wherein the temperature information comprises the temperature of the cooling liquid and the temperature of the surrounding environment.

In a possible embodiment, the temperature of the cooling liquid is detected by a liquid temperature sensor, and the temperature of the surrounding environment is detected by an ambient temperature sensor. Wherein the liquid temperature sensor may be arranged at the engine cylinder head.

In one embodiment, the plurality of ambient temperature sensors may be respectively configured to detect a cylinder head metal temperature, an engine room temperature, and an outdoor temperature, and the controller calculates the ambient temperature according to a preset weight value after receiving the cylinder head metal temperature, the engine room temperature, and the outdoor temperature. For example, the weight value of the metal temperature of the cylinder cover is 0.5, the weight value of the cabin temperature is 0.25, and the weight value of the outdoor temperature is 0.25, then the temperature of the surrounding environment is the metal temperature of the cylinder cover multiplied by 0.5+ the cabin temperature multiplied by 0.25+ the outdoor temperature multiplied by 0.25, so that the temperature of the surrounding environment is comprehensively considered, and the accurate adjustment and control of the water pump are facilitated, so that the effective temperature reduction is achieved.

And step S102, acquiring the working condition state of the current engine.

In possible embodiments, the operating condition of the engine may be varied, including any one of a cold start condition, a low load condition, a high load condition, a low speed hill climbing condition, an idle start stop condition, and a shutdown condition.

The cold start state refers to the engine being started under the condition of low liquid temperature, and the automobile is not started for a long time (such as after night parking). The low load state refers to an engine state when the load factor of the engine is lower than a load threshold value, and the high load state refers to an engine state when the load factor of the engine is higher than the load threshold value. The load factor is a percentage relative concept of torque at a specific engine speed, and is strictly defined as the ratio of torque emitted by a part of throttles to the maximum torque emitted by the throttles at full opening at the same engine speed. The low-speed hill climbing state refers to a state of the engine when the vehicle climbs a hill with the vehicle speed lower than the vehicle speed threshold. The idling start-stop state is an engine state when the engine runs under the condition of no load, the friction resistance of internal parts of the engine is only needed to be overcome, the external output power is not required, the vehicle stops, and the BSG (Belt drive Starter Generator) is started. The shutdown state refers to a state in which the vehicle is turned off.

And step S103, adjusting the water pump according to the temperature information of the current vehicle and the working condition state of the current engine.

Wherein, the water pump is preferably an electronic water pump, so that the electronic water pump is directly controlled by the controller. In a possible embodiment, the controller may perform signal interpretation and command control with the electronic water pump through a Local Interconnect Network (LIN) protocol, for example, to control the water pump to rotate at a preset speed, or to continuously rotate at a preset speed for a preset time, and the like.

Of course, the water pump may also be a mechanical water pump, and related mechanical elements are needed to control the mechanical water pump.

In the technical scheme of the invention, the operation condition and the temperature condition of the engine are comprehensively considered, and the water pump is controlled to provide circulating power for the cooling liquid according to the operation condition and the temperature condition, namely, the water pump is regulated and controlled according to the actual requirement, so that the water pump is prevented from being always in high-power consumption, the optimal regulation and control can be achieved in different working condition scenes as far as possible, and the emission of the whole engine and the consumption of fuel oil are further effectively reduced.

In order to specifically explain the regulation process of the controller to the water pump, the following is divided into a plurality of cases for specific explanation:

(1) when the operating condition state includes a cold start state, the step S103 includes: and when the current working condition state of the engine is detected to be in a cold starting state, the temperature T of the cooling liquid is less than or equal to a first threshold value T1, and the temperature T0 of the surrounding environment is less than or equal to an environment low threshold value Tx, controlling the water pump to stop running.

Wherein the first threshold T1 and the environment low threshold Tx are predetermined by the relevant person according to a priori experience. In addition, under the condition of cold starting, the controller sends an opening instruction to warm-up, the thermostat is controlled to keep in a closed state, and the water pump keeps in a closed state, so that the liquid temperature of cooling liquid in the engine is guaranteed to be rapidly increased.

(2) When the operating condition state includes a low load state, the step S103 includes: when the working condition state of the current engine is detected to be in a low-load state, if the temperature T of the cooling liquid is greater than or equal to a first threshold value T1 and less than or equal to a second threshold value T2, and the temperature T0 of the surrounding environment is less than or equal to an environment low threshold value Tx, controlling the water pump to operate at a first set rotating speed alpha; at the moment, the controller controls the thermostat to keep a closed state;

if the temperature T of the cooling liquid is greater than or equal to a second threshold value T2 and less than or equal to a third threshold value T3, and the temperature T0 of the surrounding environment is less than or equal to an environment low threshold value Tx, controlling the water pump to operate according to a second set rotating speed beta; at the moment, the controller controls the thermostat to keep an open state for better matching with the water pump so as to achieve a better cooling effect, and further water flow in the cooling circulation loop is adjusted.

Wherein the first set rotation speed alpha is less than the second set rotation speed beta; the second threshold value T2 and the third threshold value T3, and the first set rotation speed α and the second set rotation speed β are predetermined by the relevant person from a priori experience.

(3) When the operating condition state includes a high load state, the step S103 includes: and when the current working condition state of the engine is detected to be in a high load state, the temperature T of the cooling liquid is greater than or equal to a second threshold value T2 and less than or equal to a third threshold value T3, and the temperature T0 of the surrounding environment is greater than an environment low threshold value Tx and less than an environment high threshold value Ty, controlling the water pump to operate at a third set rotating speed gamma.

The third set rotating speed gamma is larger than the second set rotating speed beta, and is predetermined by related personnel according to prior experience, and if the third set rotating speed can be a rated rotating speed, the water pump reaches the maximum power, the cooling liquid circulates rapidly, and the engine is cooled rapidly. In addition, the controller controls the thermostat to remain open during high load conditions.

(4) When the operating condition state includes a low-speed climbing state, the step S103 includes: and when the working condition state of the current engine is detected to be in a low-speed climbing state, the temperature T of the cooling liquid is greater than a third threshold value, and the temperature T0 of the surrounding environment is greater than an environment high threshold value Ty, controlling the water pump to operate according to a third set rotating speed gamma, so that the engine is rapidly cooled.

Under the low-speed climbing state, the controller controls the thermostat to keep an opening state.

(5) When the operating condition state includes an idle state, the step S103 includes: when the current working condition state of the engine is detected to be in the idle starting and stopping state, the temperature T of the cooling liquid is greater than or equal to a second threshold value T2 and less than or equal to a third threshold value T3, and the water pump is controlled to operate according to a first set rotating speed alpha so as to cool the motor.

Specifically, the motor is BSG, the vehicle stops and the BSG is started in an idling state, the controller controls the conduction of a circulation loop of BSG cooling liquid at the time, and the water pump is controlled to operate according to a first set rotating speed alpha to serve as an auxiliary water pump to cool the BSG.

(6) The temperature information further includes an exhaust gas temperature at which the combustion gas in the engine passes through the turbine rotating at a high speed after being discharged from the combustion chamber, and then passes through the turbine outlet section of the engine.

When the operating condition state includes a shutdown state, the step S103 includes: and when the current working condition state of the engine is detected to be in a stop state, the temperature T of the cooling liquid is greater than a third threshold value T3, and the temperature T0 of the surrounding environment is greater than an environment high threshold value Ty, controlling the water pump to continuously operate for a preset time according to the set rotating speed according to the exhaust temperature.

Specifically, at the beginning of the stop of the automobile, if the temperature information of the engine is too high, the temperature reduction needs to be continued. In principle, when T > T3, and T0> Ty, the preset period of operation is longer the higher the control set rotational speed if the exhaust gas temperature is higher.

In summary, the present invention provides a control policy table as shown in table 1:

TABLE 1

In order to ensure the normal operation of the water pump, in a possible embodiment, the method further includes: when the water pump is detected to be out of order, a correction instruction is sent to the water pump to remove the failure.

Specifically, whether the impeller of the water pump is stuck or not or whether the rotating speed is normal or not is detected by a rotating speed sensor connected with the controller. If the impeller is stuck, a delay instruction or a reverse rotation instruction is sent to the water pump to control the water pump to rotate forwards after actively rotating reversely for a preset time or to control the water pump to rotate forwards continuously after delaying for a preset time, so that the rotating speed of the controller is normal.

Further, after the controller sends a delay instruction or a reverse instruction to the water pump for a preset time, if the rotating speed of the impeller is detected to be still abnormal, an alarm instruction is sent to a terminal corresponding to a related person.

It should be noted that the preset time period is only used for describing the preset time period, and is not limited to a specific time.

In summary, in the embodiment of the invention, the method determines different working conditions and different temperature environments, and ensures that the water pump (as the main water pump of the engine) can achieve optimal fuel consumption and emission under all possible working conditions. In addition, the thermostat is used for adjusting the water flow in the cooling circulation loop, so that the actual cooling requirement of the motor system is better met, and the motor is guaranteed to work at the optimal temperature. Meanwhile, when some fault modes (such as impeller clamping stagnation) occur, the water pump carries out active error correction (active reverse rotation or forward transmission after delay) and gives an alarm in time. Specifically, the method comprises the following steps:

(1) when the vehicle is in cold start, the water pump does not work, so that the temperature of cooling liquid in a water jacket of the engine can be rapidly increased, and the emission is improved.

(2) When the vehicle is in high load, the water pump reaches the maximum power, so that the cooling liquid circulates quickly, and the normal work of the engine is ensured.

(3) When the vehicle is frequently started and stopped, the auxiliary water pump is used for cooling the BSG, so that low oil consumption of the vehicle is ensured.

For the control method of the automobile water pump in the foregoing embodiment, an embodiment of the present invention provides an automobile water pump control device, as shown in fig. 2, the automobile water pump control device includes:

the temperature acquisition module 11 is configured to acquire temperature information of a current vehicle, where the temperature information includes a temperature of the coolant and a temperature of an ambient environment;

the state acquisition module 12 is used for acquiring the working condition state of the current engine;

and the water pump adjusting module 13 is used for adjusting the water pump according to the current temperature information of the vehicle and the current working condition state of the engine.

Further, the working condition state comprises an idling start-stop state;

the water pump regulating module 13 is further configured to: and when the current working condition state of the engine is detected to be in an idling starting and stopping state, the temperature of the cooling liquid is greater than or equal to a second threshold value and less than or equal to a third threshold value, and the water pump is controlled to operate according to the set rotating speed so as to cool the motor.

For the control method of the water pump of the automobile in the above embodiment, an embodiment of the present invention provides an automobile water pump control system, as shown in fig. 3 and 4, the automobile water pump control system includes: the system comprises a controller 100, an engine 200, a liquid temperature sensor 300, an ambient temperature sensor 400, a water pump 500 and an expansion water pot 600.

The expansion water tank 600, the water pump 500 and the engine 200 are connected in sequence through water pipes to form a cooling liquid circulation loop. In a possible embodiment, the water pump is mounted at the engine head or block.

Wherein the controller 100 comprises the automotive water pump control device as in the previous embodiments, the controller 100 is in communication connection with the water pump 500, the liquid temperature sensor 300 and the ambient temperature sensor 400. The liquid temperature sensor is used for detecting the temperature of cooling liquid in the water pipe, and the environment temperature sensor is used for detecting the temperature of the surrounding environment.

The controller may be a vehicle controller or an ECU, and is connected to the water pump 500, the liquid temperature sensor 300, and the ambient temperature sensor 400 through the LIN bus. The water pump is preferably an electronic water pump, and is easy to communicate and control.

Specifically, the expansion tank 600 is used for preventing the cooling system from having too high pressure and causing bad effects of pipe explosion if the pressure is too high or the cooling liquid is excessive during the circulation of the cooling liquid, so that redundant gas and the cooling liquid flow out of a bypass water channel of the expansion tank.

Further, the system further comprises a warm-up machine 700 in communication connection with the controller, wherein one end of the warm-up machine is connected to the electronic water pump, and the other end of the warm-up machine is connected to the engine and the expansion kettle. At the time of cold start, the coolant is rapidly warmed by warming up, thereby improving the emission.

Further, the system includes a thermostat 800 and a radiator 900. One end of the thermostat 800 is connected with an engine, and the other end is connected with a radiator and an electronic water pump; one end of the radiator is connected with the thermostat, and the other end of the radiator is connected with the electronic water pump. The thermostat is in communication with the controller, and in possible embodiments, may be of a conventional wax construction.

Specifically, the controller controls whether the thermostat is opened or not according to the temperature of the cooling liquid and the temperature of the surrounding environment, and can adjust the water quantity entering the radiator and change the circulation range of the cooling liquid so as to match the water pump and adjust the cooling capacity of the cooling system and ensure that the engine works in a proper temperature range.

Referring to fig. 5, an embodiment of the present invention further provides a controller 100, including: a processor 40, a memory 41, a bus 42 and a communication interface 43, wherein the processor 40, the communication interface 43 and the memory 41 are connected through the bus 42; the processor 40 is arranged to execute executable modules, such as computer programs, stored in the memory 41.

The Memory 41 may include a high-speed Random Access Memory (RAM) and may also include a non-volatile Memory (non-volatile Memory), such as at least one disk Memory. The communication connection between the network element of the system and at least one other network element is realized through at least one communication interface 43 (which may be wired or wireless), and the internet, a wide area network, a local network, a metropolitan area network, etc. may be used.

The bus 42 may be an ISA bus, PCI bus, EISA bus, or the like. The bus may be divided into an address bus, a data bus, a control bus, etc. For ease of illustration, only one double-headed arrow is shown in FIG. 5, but this does not indicate only one bus or one type of bus.

The memory 41 is used for storing a program, the processor 40 executes the program after receiving an execution instruction, and the method executed by the apparatus defined by the flow process disclosed in any of the foregoing embodiments of the present invention may be applied to the processor 40, or implemented by the processor 40.

The processor 40 may be an integrated circuit chip having signal processing capabilities. In implementation, the steps of the above method may be performed by integrated logic circuits of hardware or instructions in the form of software in the processor 40. The Processor 40 may be a general-purpose Processor, and includes a Central Processing Unit (CPU), a Network Processor (NP), and the like; the device can also be a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), a Field-Programmable Gate Array (FPGA) or other Programmable logic device, a discrete Gate or transistor logic device, or a discrete hardware component. The various methods, steps and logic blocks disclosed in the embodiments of the present invention may be implemented or performed. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like. The steps of the method disclosed in connection with the embodiments of the present invention may be directly implemented by a hardware decoding processor, or implemented by a combination of hardware and software modules in the decoding processor. The software module may be located in ram, flash memory, rom, prom, or eprom, registers, etc. storage media as is well known in the art. The storage medium is located in a memory 41, and the processor 40 reads the information in the memory 41 and completes the steps of the method in combination with the hardware thereof.

The automobile water pump control device, the automobile water pump control system and the automobile water pump control controller provided by the embodiment of the invention have the same technical characteristics as the automobile water pump control method provided by the embodiment, so that the same technical problems can be solved, and the same technical effects can be achieved.

The computer program product for performing the method for controlling the water pump of the vehicle according to the embodiment of the present invention includes a computer readable storage medium storing a nonvolatile program code executable by a processor, where instructions included in the program code may be used to execute the method described in the foregoing method embodiment, and specific implementation may refer to the method embodiment, and will not be described herein again.

It can be clearly understood by those skilled in the art that, for convenience and brevity of description, the specific working processes of the above-described apparatus, system and controller may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again.

The flowchart and block diagrams in the figures illustrate the architecture, functionality, and operation of possible implementations of methods and computer program products according to various embodiments of the present invention. In this regard, each block in the flowchart or block diagrams may represent a module, segment, or portion of code, which comprises one or more executable instructions for implementing the specified logical function(s). It should also be noted that, in some alternative implementations, the functions noted in the block may occur out of the order noted in the figures. For example, two blocks shown in succession may, in fact, be executed substantially concurrently, or the blocks may sometimes be executed in the reverse order, depending upon the functionality involved. It will also be noted that each block of the block diagrams and/or flowchart illustration, and combinations of blocks in the block diagrams and/or flowchart illustration, can be implemented by special purpose hardware-based systems which perform the specified functions or acts, or combinations of special purpose hardware and computer instructions.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. Unless specifically stated otherwise, the relative steps, numerical expressions, and values of the components and steps set forth in these embodiments do not limit the scope of the present invention.

In the several embodiments provided in the present application, it should be understood that the disclosed system, apparatus and method may be implemented in other ways. The above-described embodiments of the apparatus are merely illustrative, and for example, the division of the units is only one logical division, and there may be other divisions when actually implemented, and for example, a plurality of units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection of devices or units through some communication interfaces, and may be in an electrical, mechanical or other form.

The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.

In addition, functional units in the embodiments of the present invention may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit.

The functions, if implemented in the form of software functional units and sold or used as a stand-alone product, may be stored in a non-volatile computer-readable storage medium executable by a processor. Based on such understanding, the technical solution of the present invention may be embodied in the form of a software product, which is stored in a storage medium and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the method according to the embodiments of the present invention. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk, and other various media capable of storing program codes.

Finally, it should be noted that: the above-mentioned embodiments are only specific embodiments of the present invention, which are used for illustrating the technical solutions of the present invention and not for limiting the same, and the protection scope of the present invention is not limited thereto, although the present invention is described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: any person skilled in the art can modify or easily conceive the technical solutions described in the foregoing embodiments or equivalent substitutes for some technical features within the technical scope of the present disclosure; such modifications, changes or substitutions do not depart from the spirit and scope of the embodiments of the present invention, and they should be construed as being included therein. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims

1. A control method of an automobile water pump is characterized by comprising the following steps:

acquiring the working condition state of the current engine;

adjusting a water pump according to the temperature information of the current vehicle and the working condition state of the current engine;

the working condition state comprises a cold start state;

when the working condition state of the current engine is detected to be in a cold starting state, the temperature of the cooling liquid is smaller than or equal to a first threshold value, and the temperature of the surrounding environment is smaller than or equal to an environment low threshold value, controlling the water pump to stop running;

the working condition state comprises an idle speed starting and stopping state;

when the working condition state of the current engine is detected to be in an idling start-stop state, the temperature of the cooling liquid is greater than or equal to a second threshold value and less than or equal to a third threshold value, and the water pump is controlled to operate according to a set rotating speed so as to cool the motor;

the acquiring of the temperature information of the current vehicle includes:

respectively acquiring the metal temperature of a cylinder cover, the temperature of an engine room and the outdoor temperature;

and calculating the temperature of the surrounding environment according to the metal temperature of the cylinder cover, the temperature of the engine room, the outdoor temperature and a preset weight value.

2. The method of claim 1, wherein the operating condition state comprises a high load state;

3. The method of claim 1, wherein the operating condition state comprises a shutdown state; the temperature information further includes an exhaust temperature;

4. The method of claim 1, further comprising:

5. An automobile water pump control device, comprising:

the water pump adjusting module is used for adjusting a water pump according to the temperature information of the current vehicle and the working condition state of the current engine;

the working condition state comprises a cold start state;

the water pump adjusting module is specifically used for: when the working condition state of the current engine is detected to be in a cold starting state, the temperature of the cooling liquid is smaller than or equal to a first threshold value, and the temperature of the surrounding environment is smaller than or equal to an environment low threshold value, controlling the water pump to stop running;

the water pump regulating module is also used for: when the working condition state of the current engine is detected to be in an idling start-stop state, the temperature of the cooling liquid is greater than or equal to a second threshold value and less than or equal to a third threshold value, and the water pump is controlled to operate according to a set rotating speed so as to cool the motor;

the temperature acquisition module is specifically configured to:

6. An automobile water pump control system is characterized by comprising a controller, an engine, a liquid temperature sensor, an environment temperature sensor, a water pump and an expansion kettle;

the controller comprises the automobile water pump control device as claimed in claim 5, and is in communication connection with the water pump, the liquid temperature sensor and the ambient temperature sensor; the liquid temperature sensor is used for detecting the temperature of cooling liquid in the water pipe, and the environment temperature sensor is used for detecting the temperature of the surrounding environment.

7. A controller comprising a memory, a processor, and a computer program stored on the memory and operable on the processor, wherein the processor implements the method of any of claims 1 to 4 when executing the computer program.