Method of ecu controller controlling ball valve thermostat

Abstract

The application discloses a method for controlling a ball valve thermostat by an ECU controller, and comprises the following steps: obtaining the water temperature in the current first state of the engine; judging whether the water temperature in the current first state meets the standard temperature of the heating working condition; if not, the ECU controller adjusts the opening of the ball valve thermostat to the minimum opening value 0%; if yes, judging whether the water temperature in the current first state meets the temperature in the current first environment; if yes, after the ECU controller receives the air conditioner switch signal, the ECU controller adjusts the opening of the ball valve thermostat to 8% required by the heating working condition; the method for controlling the ball valve thermostat by the ECU controller according to the embodiment of the application can realize the accuracy of the opening of the ball valve thermostat, and further realizes the rapid stabilization of the engine water temperature and the comfortable heating of the passenger cabin.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of automobile air conditioning control, in particular to a method for controlling a ball valve thermostat by an ECU controller. BACKGROUND

[0002] The ball valve thermostat plays a crucial role in the engine cooling system of an automobile, which is responsible for regulating the temperature of the cooling water and controlling the heating system. Generally, the heating function of the automobile air conditioner is achieved by heat exchange between the hot water generated after the engine is warmed up and the heat exchanger in the vehicle, which can increase the temperature in the passenger compartment and meet the heating needs of passengers.

[0003] However, the opening size of the ball valve thermostat has a direct impact on the engine water temperature rising speed and the heating effect of the air conditioner. If the opening of the ball valve thermostat is set too large, the engine water temperature will rise slowly, the warm-up time will be prolonged, and the waiting time of the customer will be increased. On the contrary, if the opening is set too small, although the engine water temperature rises faster, the heating effect of the air conditioner will be affected, and the temperature rising speed will be slow, which is also difficult to meet the heating needs of customers, and therefore there is room for improvement. SUMMARY

[0004] The present application aims to solve at least one of the technical problems existing in the prior art. To this end, the present application aims to provide a method for controlling a ball valve thermostat by an ECU controller, which intelligently controls the ball valve thermostat by the ECU controller, and realizes the rapid and stable engine water temperature and comfortable heating of the passenger compartment.

[0005] The present application provides a method for controlling a ball valve thermostat by an ECU controller, comprising:

[0006] obtaining the water temperature at the current first state of the engine;

[0007] determining whether the water temperature at the current first state meets the standard temperature of the heating condition;

[0008] If not, the ECU controller adjusts the opening of the ball valve thermostat to the minimum opening value of 0%.

[0009] If yes, according to the water temperature at the current first state, it is determined whether the temperature at the current first environment meets the standard temperature of the heating condition;

[0010] If yes, after the ECU controller receives the air conditioner switch signal, the ECU controller adjusts the opening of the ball valve thermostat to 8% required by the heating condition.

[0011] According to an embodiment of the present application, the method for controlling a ball valve thermostat by an ECU controller further comprises:

[0012] Real-time monitoring and obtaining the current engine end second state water temperature;

[0013] ECU controller determines whether the current second state water temperature meets the standard temperature of the thermal working condition;

[0014] If it meets, it enters the thermal working condition, and the ball valve thermostat fixes the opening degree of the thermal working condition.

[0015] In some embodiments, the water temperature is controlled by PID regulation in the thermal working condition.

[0016] In some embodiments, the method for controlling the ball valve thermostat by the ECU controller further comprises:

[0017] Real-time monitoring and obtaining the current engine end third state water temperature;

[0018] ECU controller determines whether the current third state water temperature meets the standard temperature of the high temperature working condition;

[0019] If it meets, it enters the high temperature working condition, and the ECU controller calculates the target water temperature according to the current speed and load, and obtains the ball valve target opening degree for reducing the water temperature.

[0020] In some embodiments, the ball valve target opening degree for reducing the water temperature further comprises: fan ratio control.

[0021] In some embodiments, obtaining the ball valve thermostat opening degree information comprises: receiving the opening degree information of the air conditioning end ball valve heating signal and inputting it into the ECU controller.

[0022] In some embodiments, after the ECU controller receives the opening degree information of the air conditioning end ball valve heating signal, it obtains the best opening degree information of the air conditioning end ball valve heating signal through flow test according to the received opening degree information of the air conditioning end ball valve heating signal.

[0023] In some embodiments, obtaining the ball valve thermostat opening degree information is according to the current engine water temperature and speed load, and the target opening degree required for cooling by the ECU controller.

[0024] In some embodiments, obtaining the ball valve thermostat opening degree information further comprises: receiving the engine end ball valve opening degree information generated by the engine water temperature and speed load, and inputting it into the ECU controller.

[0025] The method for controlling the ball valve thermostat by the ECU controller according to the embodiment of the present application realizes the rapid stabilization of the engine water temperature and the comfortable heating of the passenger compartment by intelligently controlling the ball valve thermostat by the ECU controller. By monitoring the engine water temperature, the engine speed and the load in real time and receiving the ball valve opening degree information of the air conditioner end and the engine end, the ECU controller can comprehensively understand the requirements of the engine and the passenger compartment and accurately control the opening degree of the ball valve thermostat accordingly. In addition, in combination with the PID regulation and the fan proportion control, the present application can also rapidly reduce the engine water temperature under high-temperature working conditions to protect the engine from damage. Overall, by calibrating and matching the control by the ECU controller, the balance between the heating of the passenger compartment and the heat dissipation requirement of the engine is met. ① The ECU controller controls the ball valve thermostat on the engine to further control the opening degree of the ball valve thermostat to make the high-temperature and low-temperature cooling liquid exchange heat with the radiator to stabilize the engine cooling liquid temperature; ② The ECU controller controls the ball valve thermostat on the engine to control the opening degree of the ball valve thermostat to make the high-temperature and low-temperature cooling liquid exchange heat with the passenger compartment after signal interaction with the air conditioner to perform heating.

[0026] Additional aspects and advantages of the present application will be set forth in part in the description that follows, and in part will become apparent to those having ordinary skill in the art upon examination of the following or can be learned from practice of the present application. BRIEF DESCRIPTION OF DRAWINGS

[0027] The above and / or additional aspects and advantages of the present application will become apparent and be readily appreciated from the following description, taken in conjunction with the accompanying drawings, in which:

[0028] Figure 1 is a flow chart of a method for controlling a ball valve thermostat by an ECU controller according to an embodiment of the present application;

[0029] Figure 2 is a flow chart of another method for controlling a ball valve thermostat by an ECU controller according to an embodiment of the present application;

[0030] Figure 3 is a schematic diagram of a ball valve thermostat control system. DETAILED DESCRIPTION

[0031] Embodiments of the present application are described in detail below with reference to the attached drawings, which show by way of example, embodiments in which like numerals indicate like elements or elements having the same or similar function. The embodiments described below with reference to the drawings are exemplary only, and are not to be construed as limiting the present application.

[0032] The method for controlling a ball valve thermostat by an ECU controller according to an embodiment of the present application is described below in conjunction with Figures 1-3

[0033] As Figure 1 and Figure 2 ​As shown, the present disclosure proposes a method for an ECU controller to control a ball valve thermostat, comprising:

[0034] Obtaining the water temperature at the current first engine state;

[0035] Determining whether the water temperature at the current first state meets the standard temperature of the heating condition;

[0036] If not, the ECU controller adjusts the ball valve thermostat opening to the minimum opening value of 0%;

[0037] If yes, according to the water temperature at the current first state, it is determined whether the temperature at the current first environment meets the standard temperature;

[0038] If yes, after the ECU controller receives the air conditioning switch signal, the ECU controller adjusts the ball valve thermostat opening to 8% required by the heating condition.

[0039] By obtaining the engine water temperature, the ECU controller can intelligently adjust the ball valve thermostat opening to meet the demand of the heating condition or rapid warm-up.

[0040] Specifically, when the engine water temperature is lower than the standard temperature of the heating condition, the ECU controller adjusts the ball valve thermostat opening to the minimum value to accelerate the water temperature rise; when the water temperature meets the heating condition, the ball valve opening is adjusted according to the ambient temperature to maintain comfortable heating effect.

[0041] According to an embodiment of the present disclosure, the method for the ECU controller to control the ball valve thermostat further comprises:

[0042] Real-time monitoring and obtaining the water temperature at the current second engine state;

[0043] The ECU controller determines whether the water temperature at the current second state meets the standard temperature of the hot engine condition;

[0044] If yes, enter the hot engine condition, and the ball valve thermostat is fixed at the opening degree of the hot engine condition.

[0045] Specifically, when the engine water temperature reaches the standard temperature of the hot engine condition, the ECU controller fixes the opening of the ball valve thermostat, which helps the engine maintain a stable working state in the hot engine stage.

[0046] In some embodiments, the water temperature is controlled stably by PID adjustment in the hot engine condition.

[0047] Thus, in the hot engine condition, the water temperature can be more accurately controlled by PID adjustment, improving the engine performance.

[0048] Specifically, PID adjustment is an effective control algorithm that can accurately adjust according to the deviation between the current water temperature and the target water temperature, ensuring that the water temperature is quickly and stably within the target range.

[0049] In some embodiments, the method of controlling the ball valve thermostat by the ECU controller further comprises:

[0050] Real-time monitoring and obtaining the current engine-end third state water temperature;

[0051] The ECU controller determines whether the current third state water temperature meets the standard temperature of the high-temperature working condition;

[0052] If it meets, it enters the high-temperature working condition, and the ECU controller calculates the target water temperature according to the current speed and load, and obtains the ball valve target opening degree for reducing the water temperature.

[0053] Under the high-temperature working condition, the ECU controller can calculate the target water temperature according to the speed and load, and reduce the water temperature by adjusting the ball valve opening degree, so as to protect the engine from damage.

[0054] Specifically, when the engine water temperature is too high, the ECU controller calculates the appropriate target water temperature according to the current speed and load, and reduces the water temperature by adjusting the ball valve opening degree, so as to ensure the stable operation of the engine under the high-temperature working condition.

[0055] In some embodiments, the ball valve target opening degree for reducing the water temperature further comprises: fan ratio control.

[0056] Combined with the fan ratio control, that is, according to the target opening degree and the fan matching, the engine water temperature can be more effectively reduced, and the efficiency of the entire cooling system can be improved.

[0057] Specifically, under the high-temperature working condition, only adjusting the ball valve opening degree may not be enough to quickly reduce the water temperature. Combined with the fan ratio control, the ball valve thermostat can assist the engine water temperature to be reduced more quickly, and the efficiency of the entire cooling system can be improved.

[0058] In some embodiments, obtaining the ball valve thermostat opening degree information comprises: receiving the opening degree information of the air conditioning-end ball valve heating signal and inputting it into the ECU controller.

[0059] Receiving the opening degree information of the air conditioning-end ball valve heating signal enables the ECU controller to more accurately understand the heating demand of the passenger compartment.

[0060] Specifically, the opening degree information of the air conditioning-end ball valve heating signal directly reflects the heating demand of the passenger compartment. By receiving this information and inputting it into the ECU controller, the opening degree of the ball valve thermostat can be more accurately controlled to meet the heating demand of the passenger compartment.

[0061] In some embodiments, after the ECU controller receives the opening degree information of the air-conditioning end ball valve heating signal, the ECU controller obtains the optimal opening degree information of the air-conditioning end ball valve heating signal through a flow test according to the received opening degree information of the air-conditioning end ball valve heating signal.

[0062] The optimal opening degree information of the air-conditioning end ball valve heating signal obtained through the flow test can improve the heating effect and avoid problems caused by excessive or insufficient opening degree of the ball valve.

[0063] Specifically, the flow test can determine the optimal opening degree of the ball valve, thereby ensuring that the heating effect of the passenger compartment reaches the optimal state. By inputting this optimal opening degree information into the ECU controller, the opening degree of the ball valve thermostat can be more accurately controlled.

[0064] In some embodiments, the ball valve thermostat opening degree information is obtained according to the current engine water temperature and speed load, and the ECU controller calculates the target opening degree required for cooling.

[0065] The target opening degree required for cooling calculated according to the engine water temperature and speed load enables the ECU controller to more accurately control the opening degree of the ball valve thermostat to meet the cooling demand of the engine.

[0066] Specifically, the engine water temperature and speed load are important parameters for judging the working state of the engine. By calculating the target opening degree required for cooling, the ECU controller can accurately control the opening degree of the ball valve thermostat according to the actual working state of the engine.

[0067] In some embodiments, obtaining the ball valve thermostat opening degree information further includes receiving engine end ball valve opening degree information generated by the engine water temperature and speed load and inputting the information into the ECU controller.

[0068] Receiving the engine end ball valve opening degree information generated by the engine water temperature and speed load enables the ECU controller to comprehensively understand the working state of the engine, thereby more accurately controlling the opening degree of the ball valve thermostat.

[0069] Specifically, the engine end ball valve opening degree information directly reflects the working state of the engine. By receiving this information and inputting it into the ECU controller, the working state of the engine can be more comprehensively understood, and the opening degree of the ball valve thermostat can be accurately controlled accordingly.

[0070] The method for controlling the ball valve thermostat by the ECU controller according to the embodiment of the application realizes the rapid stabilization of the engine water temperature and the comfortable heating of the passenger compartment by intelligently controlling the ball valve thermostat by the ECU controller. By monitoring the engine water temperature, speed and load in real time and receiving the ball valve opening degree information of the air conditioner end and the engine end, the ECU controller can comprehensively understand the requirements of the engine and the passenger compartment and accurately control the opening degree of the ball valve thermostat accordingly. In addition, in combination with the PID adjustment and the fan proportion control, the application can also rapidly reduce the engine water temperature under high-temperature working conditions to protect the engine from damage. Overall, the application improves the efficiency and stability of the automobile engine cooling system, meets the heating requirements of the passenger compartment and improves the driving experience of customers.

[0071] As shown in Figure 3 , the ball valve thermostat control system comprises an engine, a ball valve thermostat, an ECU controller, an air conditioner, a passenger compartment and a radiator.

[0072] As shown in Figure 3 , the ball valve thermostat is arranged on the engine and is used to obtain the current engine-end multi-state water temperature, for example, the current engine-end first-state water temperature, the current engine-end second-state water temperature and the current engine-end third-state water temperature can be obtained; the engine is signal-connected with the air conditioner, the ECU controller is signal-connected with the ball valve thermostat, the ECU controller is signal-connected with the air conditioner, the air conditioner is signal-connected with the passenger compartment, if the current first-state water temperature does not meet the standard temperature of the heating working condition, the ECU controller adjusts the ball valve thermostat opening degree to the minimum opening degree value of 0%; if the current first-state water temperature meets the standard temperature of the heating working condition, it is judged whether the temperature at the current first environment meets the current first-state water temperature, if it meets, the information signal of the first-state water temperature and the temperature at the first environment is sent to the air conditioner, after the air conditioner receives the information signal of the first-state water temperature and the temperature at the first environment, the air conditioner switch is started, after the ECU controller receives the air conditioner switch signal, the ECU controller adjusts the ball valve thermostat opening degree to 8% required by the heating working condition to meet the heating requirements of the passenger compartment.

[0073] The current water temperature is followed, that is, the current engine-end second-state water temperature is monitored and obtained in real time, the ECU controller judges whether the current second-state water temperature meets the standard temperature of the hot engine working condition, if it meets, the hot engine working condition is entered, the opening degree of the ball valve thermostat is fixed to stabilize the current water temperature.

[0074] Follow up the current water temperature, that is, real-time monitoring and obtaining the current engine end third state water temperature, the ECU controller determines whether the current third state water temperature meets the high temperature working condition standard temperature, if it meets, enters the high temperature working condition, the ECU controller calculates the target water temperature according to the current speed and load, obtains the ball valve target opening degree of reducing water temperature, that is, quickly reduces the current water temperature, so as to protect the engine and avoid over-temperature.

[0075] In order to avoid super high temperature, the ball valve target opening degree of reducing water temperature also includes: fan ratio control, starting the fan can also reduce the temperature, so as to achieve the effect of protecting the engine.

[0076] The ECU controller controls calibration matching, and meets the balance between the heating demand of the passenger compartment and the heat dissipation demand of the engine. ① The ECU controller controls the ball valve thermostat on the engine, and further controls the opening degree of the ball valve thermostat to make the high and low temperature cooling liquid and the radiator exchange heat, so as to stabilize the engine cooling liquid temperature; ② The ECU controller controls the ball valve thermostat on the engine, and controls the opening degree of the ball valve thermostat to make the high and low temperature cooling liquid and the passenger compartment exchange heat after signal interaction with the air conditioner, so as to heat.

[0077] The method for the ECU controller to control the ball valve thermostat according to the embodiment of the application and other configurations and operations described are known to those skilled in the art, and will not be described in detail here.

[0078] In the description of the present specification, the description of the terms "one embodiment", "some embodiments", "exemplary embodiment", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In the present specification, the exemplary description of the above terms does not necessarily mean the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0079] Although the embodiments of the present application have been shown and described, those skilled in the art can understand that various changes, modifications, replacements and variations can be made to the embodiments without departing from the principles and purposes of the present application, and the scope of the present application is defined by the claims and their equivalents.

Claims

1. A method of controlling a ball valve thermostat with an ECU controller, characterized by, The application relates to a method for controlling the opening degree of a ball valve thermostat of an engine. The method comprises the following steps: acquiring the water temperature at the current first state of the engine; determining whether the water temperature at the current first state meets the standard temperature of the heating working condition; if not, the ECU controller adjusts the opening degree of the ball valve thermostat to the minimum opening degree value 0%; if yes, according to the water temperature at the current first state, it is determined whether the temperature at the current first environment meets the standard temperature; if yes, after the ECU controller receives the air conditioner switch signal, the ECU controller adjusts the opening degree of the ball valve thermostat to 8% required by the heating working condition; real-time monitoring and acquiring the water temperature at the current second state of the engine; the ECU controller determines whether the water temperature at the current second state meets the standard temperature of the heating working condition; if yes, the heating working condition is entered, and the opening degree of the ball valve thermostat is fixed; under the heating working condition, the water temperature is stably controlled through PID adjustment; real-time monitoring and acquiring the water temperature at the current third state of the engine; the ECU controller determines whether the water temperature at the current third state meets the standard temperature of the high-temperature working condition; 2. The method of claim 1, wherein the ECU controller controls the ball valve thermostat, and if yes, the high-temperature working condition is entered, the ECU controller calculates the target water temperature according to the current rotating speed and load, and obtains the target opening degree of the ball valve for reducing the water temperature.

3. The method of claim 2, wherein the ECU controller controls the ball valve thermostat, and The target opening degree of the ball valve for reducing the water temperature further comprises fan proportion control.

4. The method of claim 3, wherein the ECU controller controls the ball valve thermostat, and Acquiring the opening degree information of the ball valve thermostat comprises the following steps:

5. The method of claim 3, wherein the ECU controller controls the ball valve thermostat, and receiving the opening degree information of the ball valve heating signal at the air conditioner end, and inputting the opening degree information into the ECU controller.

6. The method of claim 5, wherein the ECU controller controls the ball valve thermostat, and after the ECU controller receives the opening degree information of the ball valve heating signal at the air conditioner end, the ECU controller obtains the best opening degree information of the ball valve heating signal at the air conditioner end according to the received opening degree information. Acquiring the opening degree information of the ball valve thermostat is based on the current engine water temperature and rotating speed load, and the ECU controller calculates the target opening degree required for reducing the temperature. Acquiring the opening degree information of the ball valve thermostat further comprises the following steps: receiving the opening degree information of the ball valve at the engine end generated by the engine water temperature and rotating speed load, and inputting the opening degree information into the ECU controller.

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