CN114670595B - Vehicle warm air control method and device, warm air system and vehicle - Google Patents

Vehicle warm air control method and device, warm air system and vehicle Download PDF

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Publication number
CN114670595B
CN114670595B CN202011556849.9A CN202011556849A CN114670595B CN 114670595 B CN114670595 B CN 114670595B CN 202011556849 A CN202011556849 A CN 202011556849A CN 114670595 B CN114670595 B CN 114670595B
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China
Prior art keywords
warm air
control strategy
vehicle
engine
temperature
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CN202011556849.9A
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CN114670595A (en
Inventor
魏天伟
穆宇
贾会亚
贾世龙
刘海松
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Great Wall Motor Co Ltd
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Great Wall Motor Co Ltd
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Priority to CN202011556849.9A priority Critical patent/CN114670595B/en
Priority to PCT/CN2021/135078 priority patent/WO2022135104A1/en
Publication of CN114670595A publication Critical patent/CN114670595A/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
    • B60H1/00—Heating, cooling or ventilating [HVAC] devices
    • B60H1/00642—Control systems or circuits; Control members or indication devices for heating, cooling or ventilating devices
    • B60H1/00735—Control systems or circuits characterised by their input, i.e. by the detection, measurement or calculation of particular conditions, e.g. signal treatment, dynamic models
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
    • B60H1/00—Heating, cooling or ventilating [HVAC] devices
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
    • B60H1/00—Heating, cooling or ventilating [HVAC] devices
    • B60H1/02—Heating, cooling or ventilating [HVAC] devices the heat being derived from the propulsion plant
    • B60H1/04—Heating, cooling or ventilating [HVAC] devices the heat being derived from the propulsion plant from cooling liquid of the plant
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
    • F01P3/00—Liquid cooling
    • F01P3/20—Cooling circuits not specific to a single part of engine or machine
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
    • F01P7/00—Controlling of coolant flow
    • F01P7/14—Controlling of coolant flow the coolant being liquid
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/80—Technologies aiming to reduce greenhouse gasses emissions common to all road transportation technologies
    • Y02T10/88—Optimized components or subsystems, e.g. lighting, actively controlled glasses

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • General Engineering & Computer Science (AREA)
  • Air-Conditioning For Vehicles (AREA)

Abstract

The application discloses a vehicle warm air control method, a device, a warm air system and a vehicle, and relates to the technical field of automobiles, wherein the method comprises the following steps: when the vehicle is in a non-flameout state, obtaining the temperature of the engine water; determining a current target warm air control strategy of the vehicle at least according to the corresponding relation between the water temperature of the engine and the warm air control strategy; and according to the target warm air control strategy, the warm air waterway of the vehicle is circularly cut off or opened. The embodiment of the application has the thought principle of' due to temperature control, can keep the engine to work in the most favorable temperature range, can give the maximum matching performance boundary of the air conditioning and heating system, and is beneficial to the cost control of the air conditioning system and the performance maintenance of the engine.

Description

Vehicle warm air control method and device, warm air system and vehicle
Technical Field
The application relates to the technical field of automobiles, in particular to a vehicle warm air control method and device, a warm air system and a vehicle.
Background
The air conditioning and heating system refers to a system for providing heating for a compartment. The traditional fuel oil vehicle introduces the cooling liquid of the engine into the warm air core of the air conditioning warm air system for heat exchange so as to realize the function of heating the whole vehicle.
However, in the prior art, after the engine of the fuel vehicle is started, the cooling liquid in the warm air system is always in a circulating state, which has the following problems:
1. when the air conditioner is required to refrigerate at high temperature in summer, the warm air core body generates heat radiation to the evaporator of the air conditioner and the interior of a carriage, and the refrigerating effect is affected;
2. the engine temperature is low in winter, and the heating and defrosting effects of the whole vehicle are affected.
Disclosure of Invention
The embodiment of the application provides a vehicle warm air control method and device, a warm air system and a vehicle, so as to overcome the technical problems.
In order to solve the above problems, from an aspect of the present application, an embodiment of the present application discloses a vehicle warm air control method, including:
when the vehicle is in a non-flameout state, obtaining the temperature of the engine water;
determining a current target warm air control strategy of the vehicle at least according to the corresponding relation between the water temperature of the engine and the warm air control strategy;
and according to the target warm air control strategy, the warm air waterway of the vehicle is circularly cut off or opened.
In an embodiment of the present application, the warm air control policy includes a warm state control policy and a non-warm state control policy; determining a current target warm air control strategy of the vehicle at least according to the corresponding relation between the engine water temperature and the warm air control strategy, comprising:
when the engine water temperature is in a first temperature range, determining that the target warm air control strategy is a warmup state control strategy;
when the engine water temperature is in a second temperature range, determining that the target warm air control strategy is a non-warmup state control strategy;
according to the target warm air control strategy, the warm air waterway circulation of the vehicle is cut off or opened, and the method comprises the following steps:
according to the warm state control strategy, the warm air waterway of the vehicle is circularly cut off;
or, according to the non-warmup state control strategy, the warm air waterway of the vehicle is circularly cut off or opened.
In an embodiment of the present application, according to the non-warmup state control strategy, cutting off or starting the warm air waterway circulation of the vehicle includes:
judging whether the water temperature of the engine is smaller than a preset water temperature alarm temperature threshold value according to the non-warmth state control strategy;
when the water temperature of the engine is smaller than the temperature threshold value of the water temperature alarm, further acquiring the current environment temperature;
and when the current ambient temperature is smaller than a preset ambient temperature threshold value, circulating and starting a warm air waterway of the vehicle.
In an embodiment of the present application, according to the non-warmup state control strategy, the method further includes:
and when the water temperature of the engine is not less than the temperature threshold value of the water temperature alarm, cutting off the circulation of the warm air waterway of the vehicle.
In an embodiment of the present application, when the current ambient temperature is not less than the ambient temperature threshold, according to the non-warmup state control policy, the warm air waterway circulation of the vehicle is cut off or opened, and further including:
determining whether an air conditioning warm air request is received;
when an air conditioning warm air request is received, circulating and starting a warm air waterway of the vehicle;
and when the air conditioning warm air request is not received, cutting off the warm air waterway circulation of the vehicle.
In order to solve the above-mentioned problem, from another aspect of the present application, an embodiment of the present application further discloses a vehicle warm air control device, including:
the temperature obtaining module is used for obtaining the water temperature of the engine when the vehicle is in a non-flameout state;
the target warm air control strategy determining module is used for determining the current target warm air control strategy of the vehicle at least according to the corresponding relation between the water temperature of the engine and the warm air control strategy;
and the target warm air control strategy execution module is used for circularly cutting off or starting a warm air waterway of the vehicle according to the target warm air control strategy.
In an embodiment of the present application, the warm air control policy includes a warm state control policy and a non-warm state control policy; the target warm air control strategy determining module comprises:
a warmup state control strategy determination submodule configured to determine that the target warmup state control strategy is a warmup state control strategy when the engine water temperature is in a first temperature range;
a non-warmup state control strategy determination submodule for determining that the target warmup state control strategy is a non-warmup state control strategy when the engine water temperature is in a second temperature range;
the target warm air control strategy execution module comprises:
a warm state control strategy execution sub-module for circularly cutting off a warm air waterway of the vehicle according to the warm state control strategy;
or the non-warmup state control strategy execution submodule is used for cutting off or starting the warm air waterway circulation of the vehicle according to the non-warmup state control strategy.
In an embodiment of the present application, the non-warmup state control policy execution submodule includes:
the water temperature alarm threshold judging submodule is used for judging whether the water temperature of the engine is smaller than a preset water temperature alarm temperature threshold according to the non-warmup state control strategy;
the current environment temperature acquisition sub-module is used for further acquiring the current environment temperature when the water temperature of the engine is smaller than the temperature threshold value of the water temperature alarm;
and the first execution sub-module is used for circularly starting the warm air waterway of the vehicle when the current ambient temperature is smaller than a preset ambient temperature threshold value.
To solve the above problem, from yet another aspect of the present application, an embodiment of the present application further discloses a warm air system, including:
an engine, a warm air core body,
a warm air inlet pipe and a warm air return pipe which are arranged between the engine and the warm air core body, wherein a warm air stop valve is arranged on the warm air inlet pipe;
and the controller is connected with the warm air stop valve and is used for executing the vehicle warm air control method according to the embodiment of the application so as to control the warm air stop valve to cut off or open the warm air waterway circulation of the vehicle.
In order to solve the above-mentioned problem, from still another aspect of the present application, an embodiment of the present application further discloses a vehicle, including at least:
a warm air system as described in embodiments of the present application.
Embodiments of the present application include the following advantages:
when the vehicle is in a non-flameout state, the water temperature of the engine is obtained; determining a current target warm air control strategy of the vehicle at least according to the corresponding relation between the water temperature of the engine and the warm air control strategy; according to the target warm air control strategy, the warm air waterway of the vehicle is circularly cut off or opened, so that the following functions can be realized on the basis of meeting the functions of heating and defrosting of an air conditioner: 1. when the engine is in a warm state in winter, the warm-up speed can be increased by cutting off the circulation of the warm-air waterway; 2. when the water temperature of the engine is too high, the water flow of the heat dissipation cycle of the engine can be indirectly improved by cutting off the water circulation of the warm air waterway so as to reduce the water temperature of the engine; 3. when the ambient temperature is too high, the warm air core body can be prevented from leaking heat by cutting off the warm air waterway circulation. The embodiment of the application has the thought principle of' due to temperature control, can keep the engine to work in the most favorable temperature range, can give the maximum matching performance boundary of the air conditioning and heating system, and is beneficial to the cost control of the air conditioning system and the performance maintenance of the engine.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the present application, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a flow chart of steps of a method for controlling warm air of a vehicle according to an embodiment of the present application;
FIG. 2 is a logic diagram of a warm air control strategy according to an embodiment of the present application;
FIG. 3 is a schematic diagram of a warm air system according to an embodiment of the present disclosure;
FIG. 4 is a schematic view of a vehicle according to an embodiment of the present application;
fig. 5 is a schematic functional block diagram of a vehicle warm air control device according to an embodiment of the present application.
Reference numerals illustrate:
301-an engine, 302-a warm air core body, 303-a warm air inlet pipe, 304-a warm air return pipe, 305-a warm air stop valve and 306-a controller.
Detailed Description
The following description of the embodiments of the present application will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all, of the embodiments of the present application. All other embodiments, which can be made by one of ordinary skill in the art without undue burden from the present disclosure, are within the scope of the present disclosure.
To facilitate further understanding of the present application, a detailed analysis of technical problems of the present application is first performed by those skilled in the art:
when the automobile engine normally operates, a certain working temperature is required, and the normal operation and performance exertion of the engine are not facilitated due to the fact that the working temperature is too high or too low, and on the other hand, the conventional air cooling of heat generated by the operation of the engine is difficult to meet the requirements, so that the automobile engine widely adopts a water cooling heat conduction design, namely a cooling system is arranged inside the engine. The cooling system functions to maintain the engine operating in the most advantageous temperature range to increase engine power, reduce engine wear and fuel consumption. Typically the engine water temperature is 90 c optimal. After the engine is started, heat energy is generated to heat the cooling liquid in the internal cooling system, so that the water temperature of the engine reaches a preferred temperature. Therefore, in order to fully utilize the heat energy of the cooling liquid after the engine is started, the cooling liquid of the engine is introduced into the warm air core of the air conditioner for heat exchange by the traditional fuel oil vehicle so as to realize the function of heating the whole vehicle, namely, a warm air waterway circulation is established between the engine and the warm air core, and the warmed air waterway circulation can convey the heated cooling liquid into the warm air core so as to realize the heating in the vehicle compartment.
In practice, when the engine needs to be quickly warmed up, because the heated cooling liquid in the engine is always in a circulation state of supplying the cooling liquid to the warm air core body after the engine is started, namely, the warm air waterway circulation is in a continuous opening state, the water quantity needed to be heated after the engine is started is far greater than the quantity of the cooling liquid in the engine, so that the engine can not be quickly warmed up to reach the optimal water temperature, the performance of the engine and the use of a vehicle are affected to a certain extent, and particularly in winter, the temperature of the engine is slowly increased, and the heating and defrosting effects of the whole vehicle are affected. When the air conditioner is required to refrigerate in summer, the warm air waterway circulation is in a continuous opening state, and the warm air core radiates the evaporator and the interior of the vehicle of the air conditioner, so that the refrigerating effect is affected.
According to the technical problems, the warm air stop valve is added to the warm air waterway circulation of the warm air system, and the vehicle warm air control method is provided, and when the vehicle is in a non-flameout state, the warm air waterway circulation of the vehicle can be cut off or opened in a self-adaptive mode at least according to the water temperature of the engine by controlling the warm air stop valve, so that the following functions can be realized on the basis of meeting the functions of heating and defrosting of an air conditioner: 1. when the engine is in a warm state in winter, the warm-up speed can be increased by cutting off the circulation of the warm-air waterway; 2. when the water temperature of the engine is too high, the water flow of the heat dissipation cycle of the engine can be indirectly improved by cutting off the water circulation of the warm air waterway so as to reduce the water temperature of the engine; 3. when the ambient temperature is too high, the warm air core body can be prevented from leaking heat by cutting off the warm air waterway circulation. The embodiment of the application has the thought principle of' due to temperature control, can keep the engine to work in the most favorable temperature range, can give the maximum matching performance boundary of the air conditioning and heating system, and is beneficial to the cost control of the air conditioning system and the performance maintenance of the engine.
Referring to fig. 1, a step flowchart of a vehicle warm air control method according to an embodiment of the present application is shown, where the method specifically may include the following steps:
step S101, when the vehicle is in a non-flameout state, obtaining the temperature of the engine water;
step S102, determining a current target warm air control strategy of the vehicle at least according to the corresponding relation between the water temperature of the engine and the warm air control strategy;
step S103, according to the target warm air control strategy, the warm air waterway circulation of the vehicle is cut off or opened.
In the embodiment of the application, the non-flameout state refers to the power-on state of the vehicle, and the engine is in a starting state.
Engine water temperature refers to the temperature of the coolant inside the engine.
The warm air waterway circulation of the vehicle refers to a water circulation channel in which cooling liquid heated by the engine in the engine enters the warm air core body, exchanges heat in the warm air core body and returns to the engine body.
In practice, the temperature difference of the automobile engine under different working conditions and different environments is considered, and in order to keep the engine working in the most favorable temperature range, a warm air control strategy of the application is provided.
The method and the system establish a corresponding relation between the warm air control strategy and the water temperature of the engine in advance, and the corresponding relation can be stored in the system as an execution program. After the system determines the water temperature of the engine, a target warm air control strategy corresponding to the current water temperature of the engine can be queried, and then the warm air waterway of the vehicle is properly cut off or opened according to the target warm air control strategy due to temperature control.
Since the warm air control strategy varies based on the temperature of the engine water, the temperature of the engine water is closely related to the current operating conditions and the current ambient temperature of the engine. Therefore, the warm air control strategy provided by the application is also closely related to the current working condition and the current environment temperature of the engine. Firstly, considering the current working condition of the engine, in an embodiment of the present application, the warm air control strategy includes a warm state control strategy and a non-warm state control strategy, and the correspondence between the engine water temperature and the warm air control strategy in step S102 is as follows:
when the engine water temperature is in a first temperature range (less than or equal to T1), determining that the target warm air control strategy is a warmup state control strategy;
when the engine water temperature is in a second temperature range (> T1), the target warm-air control strategy is determined to be a non-warmed-up state control strategy.
In the application, the engine is warmed up, also called an engine heat engine, and the vehicle can effectively reduce the carbon emission when running after the engine is warmed up, so that the performance of the engine and the vehicle can be maintained. When the vehicle is just started, the water temperature of the engine is low, and the engine is in a warmth state, so that the warmth state control strategy is formulated, and the warmth state control strategy is preferentially executed under the condition, so that the water temperature of the engine quickly reaches the optimal water temperature. When the engine is in a non-warmed-up state, the engine is warmed up normally, and the water temperature range of normal operation is reached. However, considering that the situation in the actual use process after the engine is warmed up is complex, for example, the external environment temperature and the use requirement of the user in the vehicle on the air conditioning system can be related, therefore, the application designs a non-warmth state control strategy, and the warm air waterway circulation of the vehicle is cut off or opened according to the non-warmth state control strategy so as to adapt to the water temperature of the engine or the use requirement of the user in the vehicle on the heating of the air conditioner.
According to the corresponding relation between the engine water temperature and the warm air control strategy, in the scheme of the application, after the engine is started, the system continuously monitors the engine water temperature and judges whether the engine water temperature is greater than a preset warm-up temperature threshold, namely, whether the engine water temperature is in a first temperature range or a second temperature range, so that whether the vehicle is currently executing a non-warm-up state control strategy or a warm-up state control strategy is determined. Specifically, a warm-up temperature threshold (T1) is preset, when the engine water temperature is less than or equal to the warm-up temperature threshold, that is, when the engine water temperature is in a first temperature range (0 < engine water temperature is less than or equal to T1), the engine is illustrated to be still in a warm-up state, at this time, it is determined that the target warm-air control strategy is a warm-up state control strategy, and the vehicle executes the warm-up state control strategy. When the engine water temperature is greater than the warm-up temperature threshold, that is, the engine water temperature is in the second temperature range (engine water temperature is greater than T1), the engine is indicated to be in the non-warm-up state, the target warm-air control strategy is determined to be the non-warm-up state control strategy at this time, and the vehicle executes the non-warm-up state control strategy.
After the target warm air control strategy is determined, the step S103 is performed as follows:
according to the warm state control strategy, the warm air waterway of the vehicle is circularly cut off;
or, according to the non-warmup state control strategy, the warm air waterway of the vehicle is circularly cut off or opened.
In the warm-up state control strategy provided by the embodiment of the application, through circularly cutting off the warm air waterway of the vehicle, the flow of the cooling liquid flowing from the engine to the warm air core body is reduced, and the flow of the cooling liquid flowing from the warm air core body to the engine is also reduced, so that the flow of the cooling liquid required to be heated by the engine body is reduced, the water temperature in the engine body is further quickly increased until the water temperature is greater than a warm-up temperature threshold value, and the warm-up process can be quickly completed.
According to the non-warmup state control strategy, the warm air waterway of the vehicle is circularly cut off or opened, and the method comprises the following steps:
judging whether the water temperature of the engine is smaller than a preset water temperature alarm temperature threshold value according to the non-warmth state control strategy;
when the water temperature of the engine is smaller than the temperature threshold value of the water temperature alarm, further acquiring the current environment temperature;
and when the current ambient temperature is smaller than a preset ambient temperature threshold value, circulating and starting a warm air waterway of the vehicle.
In the embodiment of the application, the current ambient temperature refers to the ambient temperature of the vehicle, in particular to the ambient temperature around the engine.
When the engine is in a non-warmed-up state, namely the engine has completed the warming-up process, the engine heats in the working process, the water temperature in the engine is continuously increased, and in order to avoid overhigh water temperature and influence the performance of the engine, the temperature threshold of the water temperature alarm is set. If the engine water temperature is less than the temperature threshold (T2) of the water temperature alarm, namely when the engine water temperature is less than T1 and less than T2, the influence of the current environment temperature on the execution strategy under the non-warmup state control strategy is further considered, when the current environment temperature is less than the preset environment temperature threshold (T3), the system recognizes that the current environment temperature is lower, a user possibly has an air conditioner heating requirement, a warm air waterway of the vehicle is circularly started, and the water temperature is conveyed to a warm air core.
In practice, the engine is connected with the heat radiation structure, the warm air core body and the vehicle water pump simultaneously, after the cooling liquid in the vehicle water pump flows into the engine, the cooling liquid in the engine flows into the heat radiation structure and the warm air core body respectively, namely, a cooling liquid path circulation is formed between the engine and the heat radiation structure, and a warm air water path circulation mentioned in the application is formed between the engine and the warm air core body. When the water temperature of the engine exceeds the temperature threshold value of the water temperature alarm, if a warm air waterway is still started in a circulating way to supply heat to the warm air core body, a shunt is added under the condition that the water supply amount of the vehicle water pump is the same, so that the water flow between the engine and the heat dissipation structure is reduced, the heat dissipation speed of the engine is slowed down, and the engine cannot be kept to work in the most favorable temperature range. Therefore, according to the non-warmup state control strategy, the scheme for cutting off or opening the warm air waterway circulation of the vehicle further comprises:
and when the water temperature of the engine is not less than the temperature threshold value of the water temperature alarm, cutting off the circulation of the warm air waterway of the vehicle.
According to the method, when the engine is in a non-warmed-up state and the engine water temperature is not less than the temperature threshold value of the water temperature alarm, namely, the engine water temperature is not less than T2, the flow of cooling liquid flowing from the engine to the warm air core body can be reduced by cutting off the warm air waterway circulation of the vehicle, so that the cooling speed of the engine water temperature is accelerated, and the technical problem is solved.
The application considers the influence of the current ambient temperature on the execution strategy under the non-warmth state control strategy, and when the current ambient temperature is not smaller than the ambient temperature threshold value, the application does not cut off the circulation of the warm air waterway, and at the moment, according to the provided non-warmth state control strategy, the system execution steps are as follows:
determining whether an air conditioning warm air request is received;
when an air conditioning warm air request is received, circulating and starting a warm air waterway of the vehicle;
and when the air conditioning warm air request is not received, cutting off the warm air waterway circulation of the vehicle.
According to the method, whether the warm air channel is circularly opened or closed is determined by further considering the wish of the user for heating the air conditioner or not by judging whether the warm air request of the air conditioner is received, and the execution mode is suitable for the warm air channel and is more humanized. Specific:
if the system receives an air conditioning and warm air request, the warm air waterway of the vehicle is circularly started, so that the user can still normally use the air conditioning and warm air function when the external environment temperature is higher.
If the system does not receive the air conditioning warm air request, the warm air waterway circulation of the vehicle is cut off, and the warm air core body can be prevented from leaking heat when the environment temperature is too high.
In summary, the present application describes the warm air control strategy in detail, as shown in fig. 2, which is a logic schematic diagram of the warm air control strategy according to the embodiment of the present application. In fig. 2, the warm air water path of the vehicle is opened or closed by a warm air stop valve mounted on the pipeline, the above-mentioned warm-up temperature threshold is T1 in fig. 2, the temperature threshold of the water temperature alarm is T2 in fig. 2, and the ambient temperature threshold is T3 in fig. 2.
Based on the same inventive concept, referring to fig. 3, an embodiment of the present application provides a schematic structural diagram of a warm air system, which may include:
the engine 301, the warm air core 302,
a warm air inlet pipe 303 and a warm air return pipe 304 which are arranged between the engine 301 and the warm air core 302, wherein a warm air stop valve 305 is arranged on the warm air inlet pipe 303;
and the controller 306 is connected with the warm air stop valve 305 and is used for executing the vehicle warm air control method in the embodiment of the application so as to control the warm air stop valve 305 to cut off or open the warm air waterway circulation of the vehicle.
Wherein the controller may be controlled by an engine control unit ECU (Engine Control Unit). The flow channels formed by the engine 301, the warm air core 302, the warm air water inlet pipe 303 and the warm air water return pipe 304 together form the warm air water path circulation in the embodiment of the application, namely, the cooling liquid heated by the engine 301 in the engine 301 enters the warm air core 302 through the warm air water inlet pipe 303, and returns to the engine body through the warm air water return pipe 304 after heat exchange in the warm air core 302. Referring to the structure of fig. 3, a warm air shut-off valve 305 is provided on the warm air intake pipe 303, and the warm air water path circulation can be shut off by closing the warm air shut-off valve 305; by opening the warm air shut-off valve 305, the warm air waterway can be cyclically opened. The warm air stop valve 305 adopts a solenoid valve, and can be connected with the controller through a wire or wirelessly, and receive a control signal of the controller 306 to execute the vehicle warm air control method according to the embodiment of the present application. Regarding the vehicle warm air control method, reference is made to the steps and principles shown in fig. 1 and 2, and the description thereof is omitted herein.
According to the warm air system, when a vehicle is in a non-flameout state, the warm air water inlet pipe 303 of the vehicle can be cut off or opened in a self-adaptive manner by controlling the warm air stop valve 305 according to the water temperature of the engine and the current environment temperature, so that the following functions can be realized on the basis of meeting the functions of heating and defrosting of an air conditioner: 1. when the engine is in a warm state, the warm-up speed can be increased by cutting off the circulation of the warm-air waterway; 2. when the water temperature of the engine is too high, the water flow of the heat dissipation cycle of the engine can be indirectly improved by cutting off the water circulation of the warm air waterway so as to reduce the water temperature of the engine; 3. when the ambient temperature is too high, the warm air core body can be prevented from leaking heat by cutting off the warm air waterway circulation.
Based on the same inventive concept, referring to fig. 4, an embodiment of the present application provides a schematic structural diagram of a vehicle, which may at least include:
a warm air system as described in embodiments of the present application.
According to the vehicle disclosed by the embodiment of the application, the warm air system shown in the figure 3 is arranged, so that the maximum matching performance boundary of the vehicle air conditioning warm air system can be given based on the thought principle of 'due to temperature control', the cost control of the air conditioning system and the performance maintenance of an engine are facilitated, and the running performance of the whole vehicle is improved.
It should be noted that, for simplicity of description, the method embodiments are shown as a series of acts, but it should be understood by those skilled in the art that the embodiments are not limited by the order of acts described, as some steps may occur in other orders or concurrently in accordance with the embodiments. Further, those skilled in the art will appreciate that the embodiments described in the specification are all preferred embodiments and that the acts referred to are not necessarily required by the embodiments of the present application.
Based on the same inventive concept, referring to fig. 5, an embodiment of the present application further provides a functional module schematic diagram of a vehicle warm air control device, where the device may include the following modules:
a temperature obtaining module 501 for obtaining an engine water temperature when the vehicle is in a non-flameout state;
the target warm air control strategy determining module 502 is configured to determine a current target warm air control strategy of the vehicle according to at least a correspondence between the engine water temperature and the warm air control strategy;
and the target warm air control strategy execution module 503 is configured to cycle off or on a warm air waterway of the vehicle according to the target warm air control strategy.
In an embodiment of the present application, the warm air control policy includes a warm state control policy and a non-warm state control policy; the target warm air control strategy determination module 502 includes:
a warmup state control strategy determination submodule configured to determine that the target warmup state control strategy is a warmup state control strategy when the engine water temperature is in a first temperature range;
a non-warmup state control strategy determination submodule for determining that the target warmup state control strategy is a non-warmup state control strategy when the engine water temperature is in a second temperature range;
the target warm air control policy execution module 503 includes:
a warm state control strategy execution sub-module for circularly cutting off a warm air waterway of the vehicle according to the warm state control strategy;
or the non-warmup state control strategy execution submodule is used for cutting off or starting the warm air waterway circulation of the vehicle according to the non-warmup state control strategy.
In an embodiment of the present application, the non-warmup state control policy execution submodule includes:
the water temperature alarm threshold judging submodule is used for judging whether the water temperature of the engine is smaller than a preset water temperature alarm temperature threshold according to the non-warmup state control strategy;
the current environment temperature acquisition sub-module is used for further acquiring the current environment temperature when the water temperature of the engine is smaller than the temperature threshold value of the water temperature alarm;
and the first execution sub-module is used for circularly starting the warm air waterway of the vehicle when the current ambient temperature is smaller than a preset ambient temperature threshold value.
In an embodiment of the present application, the target warm air control policy execution module 503 may further include:
and the second execution sub-module is used for cutting off the circulation of the warm air waterway of the vehicle when the water temperature of the engine is not less than the temperature threshold value of the water temperature alarm.
In an embodiment of the present application, when the current ambient temperature is not less than the ambient temperature threshold, the non-warmup state control policy execution sub-module may further include:
the air conditioner warm air request receiving and determining submodule is used for determining whether an air conditioner warm air request is received or not;
the third execution sub-module is used for circularly starting a warm air waterway of the vehicle when receiving an air conditioning warm air request;
and the fourth execution sub-module is used for cutting off the warm air waterway circulation of the vehicle when the warm air request of the air conditioner is not received.
It should be noted that, in the present specification, each embodiment is described in a progressive manner, and each embodiment is mainly described as different from other embodiments, and identical and similar parts between the embodiments are all enough to be referred to each other.
It should also be noted that, in this document, the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," "outer," and the like indicate an orientation or a positional relationship based on that shown in the drawings, and are merely for convenience of description and to simplify the description, but do not indicate or imply that the apparatus or elements to be referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present application. Moreover, relational terms such as "first" and "second" may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions, or order, and without necessarily being construed as indicating or implying any relative importance. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or terminal that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or terminal. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article, or terminal device comprising the element.
The foregoing has outlined rather broadly the more detailed description of the present application, and the detailed description of the principles and embodiments herein may be better understood as being a limitation on the present application. Also, various modifications in the details and application scope may be made by those skilled in the art in light of this disclosure, and all such modifications and variations are not required to be exhaustive or are intended to be within the scope of the disclosure.

Claims (6)

1. A vehicle warm air control method, characterized by comprising:
when the vehicle is in a non-flameout state, obtaining the temperature of the engine water;
determining a current target warm air control strategy of the vehicle at least according to the corresponding relation between the water temperature of the engine and the warm air control strategy;
according to the target warm air control strategy, the warm air waterway circulation of the vehicle is cut off or opened, and at least comprises:
the warm air control strategy comprises a warm state control strategy and a non-warm state control strategy; determining a current target warm air control strategy of the vehicle at least according to the corresponding relation between the engine water temperature and the warm air control strategy, comprising:
when the engine water temperature is in a first temperature range, determining that the target warm air control strategy is a warmup state control strategy, wherein the first temperature range is smaller than 90 ℃;
when the engine water temperature is in a second temperature range, determining that the target warm air control strategy is a non-warmup state control strategy, wherein the second temperature range is greater than or equal to 90 ℃; according to the non-warmup state control strategy, the warm air waterway circulation of the vehicle is cut off or opened, and at least comprises:
judging whether the water temperature of the engine is smaller than a preset water temperature alarm temperature threshold value according to the non-warmth state control strategy;
when the water temperature of the engine is smaller than the temperature threshold value of the water temperature alarm, further acquiring the current environment temperature;
when the current ambient temperature is smaller than a preset ambient temperature threshold value, circulating a warm air waterway of the vehicle;
when the current ambient temperature is not less than the ambient temperature threshold, according to the non-warmup state control strategy, cutting off or starting the warm air waterway circulation of the vehicle, and further comprising:
determining whether an air conditioning warm air request is received;
when an air conditioning warm air request is received, circulating and starting a warm air waterway of the vehicle;
when the warm air request of the air conditioner is not received, the warm air waterway of the vehicle is circularly cut off;
when the temperature of the engine water is less than or equal to a warm-up temperature threshold value, the warm air waterway circulation of the vehicle is cut off;
and when the water temperature of the engine is not less than the temperature threshold value of the water temperature alarm, cutting off the circulation of the warm air waterway of the vehicle.
2. The method of claim 1, wherein the step of determining the position of the substrate comprises,
according to the target warm air control strategy, the warm air waterway circulation of the vehicle is cut off or opened, and the method comprises the following steps:
and according to the warm state control strategy, the warm air waterway circulation of the vehicle is cut off.
3. A vehicle warm air control apparatus, comprising:
the temperature obtaining module is used for obtaining the water temperature of the engine when the vehicle is in a non-flameout state;
the target warm air control strategy determining module is used for determining the current target warm air control strategy of the vehicle at least according to the corresponding relation between the water temperature of the engine and the warm air control strategy;
the target warm air control strategy execution module is used for circularly cutting off or starting a warm air waterway of the vehicle according to the target warm air control strategy;
the target warm air control strategy execution module is at least used for:
when the temperature of the engine water is less than or equal to a warm-up temperature threshold value, the warm air waterway circulation of the vehicle is cut off;
when the water temperature of the engine is not less than the temperature threshold value of the water temperature alarm, the warm air waterway of the vehicle is circularly cut off;
wherein the warm air control strategy comprises a warm state control strategy and a non-warm state control strategy; the target warm air control strategy determining module comprises:
a warmup state control strategy determination submodule configured to determine that the target warmup state control strategy is a warmup state control strategy when the engine water temperature is in a first temperature range;
a non-warmup state control strategy determination submodule for determining that the target warmup state control strategy is a non-warmup state control strategy when the engine water temperature is in a second temperature range;
the target warm air control strategy execution module comprises a non-warmup state control strategy execution sub-module,
the non-warmup state control strategy execution sub-module is configured to cut off or open a warm air waterway cycle of the vehicle according to the non-warmup state control strategy, and includes:
the water temperature alarm threshold judging submodule is used for judging whether the water temperature of the engine is smaller than a preset water temperature alarm temperature threshold according to the non-warmup state control strategy;
the current environment temperature acquisition sub-module is used for further acquiring the current environment temperature when the water temperature of the engine is smaller than the temperature threshold value of the water temperature alarm;
the first execution sub-module is used for circularly starting a warm air waterway of the vehicle when the current ambient temperature is smaller than a preset ambient temperature threshold value;
wherein when the current ambient temperature is not less than the ambient temperature threshold, the non-warmup state control strategy execution sub-module further includes:
the air conditioner warm air request receiving and determining submodule is used for determining whether an air conditioner warm air request is received or not;
the third execution sub-module is used for circularly starting a warm air waterway of the vehicle when receiving an air conditioning warm air request;
a fourth execution sub-module, configured to cycle off a warm air waterway of the vehicle when an air conditioning warm air request is not received;
the target warm air control strategy execution module further comprises:
and the second execution sub-module is used for cutting off the circulation of the warm air waterway of the vehicle when the water temperature of the engine is not less than the temperature threshold value of the water temperature alarm.
4. The apparatus of claim 3, wherein the device comprises a plurality of sensors,
the target warm air control strategy execution module further comprises:
and the warm state control strategy execution submodule is used for cutting off the warm air waterway circulation of the vehicle according to the warm state control strategy.
5. A warm air system, comprising:
an engine (301), a warm air core (302),
a warm air inlet pipe (303) and a warm air return pipe (304) which are arranged between the engine (301) and the warm air core body (302), wherein a warm air stop valve (305) is arranged on the warm air inlet pipe (303);
a controller (306) connected to the warm air shut-off valve (305) for executing the vehicle warm air control method according to any one of claims 1 to 2, so as to control the warm air shut-off valve (305) to shut off or open the warm air waterway cycle of the vehicle.
6. A vehicle, characterized by at least comprising:
a warm air system according to claim 5.
CN202011556849.9A 2020-12-24 2020-12-24 Vehicle warm air control method and device, warm air system and vehicle Active CN114670595B (en)

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