阅读说明：本技术 一种关于发动机的恒温空气热管理控制系统及方法 (Constant-temperature air thermal management control system and method for engine ) 是由 苏金龙 沈琼 柳芳 赵向前 于 2021-01-08 设计创作，主要内容包括：本申请实施例公开了一种关于发动机的恒温空气热管理控制系统及方法,用于减少在发动机运行时,因进出气波动较大而影响发动机运行效率的情况。本申请实施例方法包括：中冷器、电磁阀结构、进气传感器、加热器、发动机、风扇、增压器、废气循环结构以及发动机控制单元；加热器的一端与进气传感器连接,另一端与发动机连接；发动机与增压器连接；增压器与电磁阀结构连接；电磁阀结构与中冷器连接；中冷器与进气传感器连接；风扇与发动机控制单元分别设于发动机；废气循环结构分别与电磁阀结构、增压器以及发动机连接；当检测到增压后的空气温度过高或过低时,发动机控制单元用于控制电磁阀结构与废气循环结构的状态。(The embodiment of the application discloses a constant-temperature air thermal management control system and method for an engine, which are used for reducing the influence on the running efficiency of the engine due to large fluctuation of air inlet and outlet when the engine runs. The method in the embodiment of the application comprises the following steps: the system comprises an intercooler, an electromagnetic valve structure, an air inlet sensor, a heater, an engine, a fan, a supercharger, an exhaust gas circulation structure and an engine control unit; one end of the heater is connected with the air inlet sensor, and the other end of the heater is connected with the engine; the engine is connected with the supercharger; the supercharger is structurally connected with the electromagnetic valve; the electromagnetic valve structure is connected with the intercooler; the intercooler is connected with the air inlet sensor; the fan and the engine control unit are respectively arranged on the engine; the exhaust gas circulation structure is respectively connected with the electromagnetic valve structure, the supercharger and the engine; when the temperature of the supercharged air is detected to be too high or too low, the engine control unit is used for controlling the states of the electromagnetic valve structure and the exhaust gas circulation structure.)

1. A thermostatic air thermal management control system for an engine, comprising:

the system comprises an intercooler, an electromagnetic valve structure, an air inlet sensor, a heater, an engine, a fan, a supercharger, an exhaust gas circulation structure and an engine control unit;

one end of the heater is connected with the air inlet sensor, the other end of the heater is connected with the engine, the air inlet sensor is used for detecting the temperature, the pressure and the flow rate of air inlet of the engine, and the heater is used for assisting in air inlet temperature rise;

the engine is connected with the supercharger, and the supercharger is used for supercharging air passing through the engine;

the supercharger is connected with the electromagnetic valve structure, and the electromagnetic valve structure is used for controlling the temperature and the pressure of the air after intercooling and supercharging;

the electromagnetic valve structure is connected with the intercooler, and the intercooler is used for reducing the temperature of the pressurized air;

the intercooler is connected with the air inlet sensor;

the fan and the engine control unit are respectively arranged on the engine, and the fan is used for assisting the heat dissipation of the engine;

the exhaust gas circulation structure is respectively connected with the electromagnetic valve structure, the supercharger and the engine, and is used for treating and releasing exhaust gas discharged after the engine reacts;

and when the temperature of the supercharged air is detected to be too high or too low, the engine control unit is used for controlling the states of the electromagnetic valve structure and the exhaust gas circulation structure.

2. The control system of claim 1, further comprising: a mixer;

the mixer is respectively connected with the supercharger and the exhaust gas circulation structure, and the mixer is used for mixing the exhaust gas in the exhaust gas circulation structure with the pressurized air in the supercharger.

3. The control system according to claim 2, wherein the exhaust gas circulation structure includes: an exhaust gas recirculation valve and an exhaust gas recirculation cooler;

the exhaust gas circulating valve is connected with the mixer;

the exhaust gas circulation cooler is respectively connected with the engine and the supercharger;

the exhaust gas circulation valve is connected with the exhaust gas recirculation cooler, the exhaust gas circulation valve is used for controlling the circulation quantity of the exhaust gas, and the exhaust gas recirculation cooler is used for reducing the temperature of the exhaust gas.

4. The control system of claim 3, further comprising: an air outlet sensor;

the air outlet sensor is connected between the electromagnetic valve structure and the mixer and used for detecting the temperature, pressure and flow rate of air outlet from the engine.

5. The control system of claim 4, further comprising: an air quality detector;

the air quality detector is arranged between the engine and the heater and is used for detecting the air quality value flowing through the engine in real time.

6. The control system of any one of claims 1 to 5, wherein there are at least two solenoid valves in the solenoid valve arrangement.

7. A thermostatic air thermal management control method for an engine, characterized by comprising:

acquiring a first detection value within a preset time, wherein the first detection value is the content ratio of the mixed gas detected by the gas outlet sensor;

judging whether the first detection value reaches a first preset value, wherein the first preset value is a gas content ratio required by the internal reaction of the engine;

if not, determining the adjusting opening degree of an exhaust gas circulating valve in the exhaust gas circulating structure;

controlling a valve opening of the exhaust gas circulation valve according to the adjustment opening;

obtaining a second detection value for the second time;

judging whether the second detection value reaches a first preset value or not;

if not, acquiring a first air temperature value and a second air temperature value, wherein the first air temperature value is an air temperature value detected by an air inlet sensor, and the second air temperature value is a gas temperature value of the mixture of air and waste gas detected by an air outlet sensor;

judging whether the temperature state of the engine intake air is an abnormal state or not according to the first temperature value and the second temperature value;

and if so, determining the regulating opening of the electromagnetic valve in the electromagnetic valve structure and the regulating parameters of the related components according to the abnormal state.

8. The control method according to claim 7, before the determining whether the air temperature state of the engine intake air is an abnormal state based on the first air temperature value and the second air temperature value, the control method further comprising:

and calculating the temperature difference value between the preset standard gas temperature value and the first gas temperature value.

9. The control method according to claim 8, wherein the determining of the regulation opening degree of the solenoid valve in the solenoid valve structure and the regulation parameter of the relevant component according to the abnormal state includes:

when the abnormal state is that the air inlet temperature is too low, determining the voltage and current parameters of the heater according to the temperature difference between the first air temperature value and the second air temperature value to increase the temperature;

when the abnormal state is that the inlet air temperature is too high, judging whether the first air temperature value is larger than a second preset value or not, if so, controlling a first electromagnetic valve and a second electromagnetic valve of an electromagnetic valve structure to be fully opened, and determining the rotating speed of a fan and the pressure ratio of a supercharger according to the temperature difference value to assist in cooling;

if not, judging whether the first air temperature value is smaller than a third preset value or not;

and if so, determining the opening degree of a first electromagnetic valve of the electromagnetic valve structure according to the temperature difference value.

10. The control method according to claim 9, wherein after determining whether the first air temperature value is less than a third preset value, the control method further comprises:

if not, controlling the first electromagnetic valve of the electromagnetic valve structure to be fully opened, and determining the opening degree of a second electromagnetic valve of the electromagnetic valve structure according to the temperature difference value.

Technical Field

The embodiment of the application relates to the technical field of engines, in particular to a constant-temperature air thermal management control system and method for an engine.

Background

With the continuous development of automobile science and technology, the requirements of users on automobile performance begin to be gradually improved, and the engine is required to have better combustion performance, the whole automobile has better emission performance and the like. The air heat management system of the engine of the whole vehicle not only influences the power performance of the engine of the whole vehicle, such as power output and the like, but also influences the important components of the whole vehicle, such as combustion performance, emission performance and the like of the engine of the whole vehicle.

The air heat management system of the traditional whole vehicle engine collects water temperature data through a water temperature sensor and transmits the water temperature data to an engine control unit, and the engine control unit adjusts the rotating speed of a fan according to the water temperature of the engine to dissipate heat, so that the water temperature of the engine is reduced, and pressurized air is diluted.

In the conventional air heat management mode used at present, factors such as unstable temperature of the intake air after intercooling, insufficient combustion reaction of the engine and the like exist, so that the fluctuation of the intake air and the exhaust air of the engine is large, and the running efficiency of the engine is influenced.

Disclosure of Invention

The embodiment of the application provides a constant-temperature air thermal management control system and method for an engine, which are used for reducing the influence on the running efficiency of the engine due to large fluctuation of air inlet and outlet when the engine runs.

The present application provides in a first aspect a thermostatic air thermal management control system for an engine comprising:

the system comprises an intercooler, an electromagnetic valve structure, an air inlet sensor, a heater, an engine, a fan, a supercharger, an exhaust gas circulation structure and an engine control unit;

one end of the heater is connected with the air inlet sensor, the other end of the heater is connected with the engine, the air inlet sensor is used for detecting the temperature, the pressure and the flow rate of air inlet of the engine, and the heater is used for assisting in air inlet temperature rise;

the engine is connected with the supercharger, and the supercharger is used for supercharging air passing through the engine;

the supercharger is connected with the electromagnetic valve structure, and the electromagnetic valve structure is used for controlling the temperature and the pressure of the air after intercooling and supercharging;

the electromagnetic valve structure is connected with the intercooler, and the intercooler is used for reducing the temperature of the pressurized air;

the intercooler is connected with the air inlet sensor;

the fan and the engine control unit are respectively arranged on the engine, and the fan is used for assisting the heat dissipation of the engine;

the exhaust gas circulation structure is respectively connected with the electromagnetic valve structure, the supercharger and the engine, and is used for treating and releasing exhaust gas discharged after the engine reacts;

and when the temperature of the supercharged air is detected to be too high or too low, the engine control unit is used for controlling the states of the electromagnetic valve structure and the exhaust gas circulation structure.

Optionally, the control system further includes: a mixer;

the mixer is respectively connected with the supercharger and the exhaust gas circulation structure, and the mixer is used for mixing the exhaust gas in the exhaust gas circulation structure with the pressurized air in the supercharger.

Optionally, the exhaust gas circulation structure includes: an exhaust gas recirculation valve and an exhaust gas recirculation cooler;

the exhaust gas circulating valve is connected with the mixer;

the exhaust gas circulation cooler is respectively connected with the engine and the supercharger;

the exhaust gas circulation valve is connected with the exhaust gas recirculation cooler, the exhaust gas circulation valve is used for controlling the circulation quantity of the exhaust gas, and the exhaust gas recirculation cooler is used for reducing the temperature of the exhaust gas.

Optionally, the control system further includes: an air outlet sensor;

the air outlet sensor is connected between the electromagnetic valve structure and the mixer and used for detecting the temperature, pressure and flow rate of air outlet from the engine.

Optionally, the control system further includes: an air quality detector;

the air quality detector is arranged between the engine and the heater and is used for detecting the air quality value flowing through the engine in real time.

Optionally, at least two electromagnetic valves are arranged in the electromagnetic valve structure.

The present application provides, in a second aspect, a method for controlling thermostatic air thermal management in relation to an engine, comprising:

acquiring a first detection value within a preset time, wherein the first detection value is the content ratio of the mixed gas detected by the gas outlet sensor;

judging whether the first detection value reaches a first preset value, wherein the first preset value is a gas content ratio required by the internal reaction of the engine;

if not, determining the adjusting opening degree of an exhaust gas circulating valve in the exhaust gas circulating structure;

controlling a valve opening of the exhaust gas circulation valve according to the adjustment opening;

obtaining a second detection value for the second time;

judging whether the second detection value reaches a first preset value or not;

if not, acquiring a first air temperature value and a second air temperature value, wherein the first air temperature value is an air temperature value detected by an air inlet sensor, and the second air temperature value is a gas temperature value of the mixture of air and waste gas detected by an air outlet sensor;

judging whether the temperature state of the engine intake air is an abnormal state or not according to the first temperature value and the second temperature value;

and if so, determining the regulating opening of the electromagnetic valve in the electromagnetic valve structure and the regulating parameters of the related components according to the abnormal state.

Optionally, before determining whether the temperature state of the engine intake air is an abnormal state according to the first air temperature value and the second air temperature value, the control method further includes:

and calculating the temperature difference value between the preset standard gas temperature value and the first gas temperature value.

Optionally, the determining, according to the abnormal state, an adjustment opening of a solenoid valve in the solenoid valve structure and an adjustment parameter of a related component includes:

when the abnormal state is that the air inlet temperature is too low, determining the voltage and current parameters of the heater according to the temperature difference between the first air temperature value and the second air temperature value to increase the temperature;

when the abnormal state is that the inlet air temperature is too high, judging whether the first air temperature value is larger than a second preset value or not, if so, controlling a first electromagnetic valve and a second electromagnetic valve of an electromagnetic valve structure to be fully opened, and determining the rotating speed of a fan and the pressure ratio of a supercharger according to the temperature difference value to assist in cooling;

if not, judging whether the first air temperature value is smaller than a third preset value or not;

and if so, determining the opening degree of a first electromagnetic valve of the electromagnetic valve structure according to the temperature difference value.

Optionally, after determining whether the first air temperature value is smaller than a third preset value, the control method further includes:

if not, controlling the first electromagnetic valve of the electromagnetic valve structure to be fully opened, and determining the opening degree of a second electromagnetic valve of the electromagnetic valve structure according to the temperature difference value.

According to the technical scheme, the embodiment of the application has the following advantages:

through setting up the control system who has the intercooler, the solenoid valve structure, the sensor admits air, the heater, the engine, a fan, the booster, exhaust gas circulation structure and engine control unit, it is abundant whether to confirm the combustion reaction of engine through the real-time detection of sensor to engine admit air gas temperature, when the air temperature after the sensor detects the pressure boost is too high or low, then confirm that the combustion reaction of engine inside does not satisfy the demand, need to adjust the solenoid valve structure through engine control unit, exhaust gas circulation structure, so that admit air temperature can reach the sufficient condition of engine combustion, simultaneously can also assist the intensification through the rotational speed of adjusting the fan and the power of heater, the cooling. Thus, the influence of large fluctuation of intake and exhaust gas on the engine operation efficiency can be reduced.

Drawings

FIG. 1 is a schematic overall structure diagram of a constant-temperature air thermal management control system of an engine according to an embodiment of the application;

FIG. 2 is another overall structure schematic diagram of the constant-temperature air thermal management control system of the engine according to the embodiment of the application;

FIG. 3 is a schematic flow chart illustrating an embodiment of a method for controlling thermostatic air thermal management of an engine according to an embodiment of the present disclosure;

FIG. 4 is a schematic flow chart of another embodiment of a method for controlling thermostatic air thermal management of an engine according to an embodiment of the present application.

Detailed Description

In the present application, the terms "upper", "lower", "left", "right", "front", "rear", "top", "bottom", "inner", "outer", "middle", "vertical", "horizontal", "lateral", "longitudinal", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are used only for explaining relative positional relationships between the respective members or components, and do not particularly limit specific mounting orientations of the respective members or components.

Moreover, some of the above terms may be used to indicate other meanings besides the orientation or positional relationship, for example, the term "on" may also be used to indicate some kind of attachment or connection relationship in some cases. The specific meaning of these terms in this application will be understood by those of ordinary skill in the art as appropriate.

Furthermore, the terms "mounted," "disposed," "provided," "connected," and "connected" are to be construed broadly. For example, it may be a fixed connection, a removable connection, or a unitary construction; can be a mechanical connection, or an electrical connection; may be directly connected, or indirectly connected through intervening media, or may be in internal communication between two devices, elements or components. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.

In addition, the structures, the proportions, the sizes, and the like, which are illustrated in the accompanying drawings and described in the present application, are intended to be considered illustrative and not restrictive, and therefore, not limiting, since those skilled in the art will understand and read the present application, it is understood that any modifications of the structures, changes in the proportions, or adjustments in the sizes, which are not necessarily essential to the practice of the present application, are intended to be within the scope of the present disclosure without affecting the efficacy and attainment of the same.

The technical solutions in the present application will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present application, and it is obvious that the described embodiments are only some embodiments of the present application, not all embodiments. 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 application.

The embodiment of the application provides a constant-temperature air heat management control system for an engine, which is used for reducing the influence on the running efficiency of the engine due to large fluctuation of inlet and outlet air when the engine runs.

Referring to fig. 1 to 2, an embodiment of the present application discloses a thermostatic air thermal management control system for an engine, including: the system comprises an intercooler 1, an electromagnetic valve structure 2, an air inlet sensor 3, a heater 4, an engine 5, a fan 6, a supercharger 7, an exhaust gas circulation structure 8 and an engine control unit 9; one end of the heater 4 is connected with the air inlet sensor 3, the other end of the heater 4 is connected with the engine 5, the air inlet sensor 3 is used for detecting the temperature, the pressure and the flow rate of air inlet of the engine 5, and the heater 4 is used for assisting in air inlet temperature rise; the engine 5 is connected with a supercharger 7, and the supercharger 7 is used for supercharging air passing through the engine 5; the supercharger 7 is connected with the electromagnetic valve structure 2, and the electromagnetic valve structure 2 is used for controlling the temperature and the pressure of the air after intercooling and supercharging; the electromagnetic valve structure 2 is connected with the intercooler 1, and the intercooler 1 is used for reducing the temperature of the supercharged air; the intercooler 1 is connected with the air inlet sensor 3; the fan 6 and the engine control unit 9 are respectively arranged on the engine 5, and the fan 6 is used for assisting the engine 5 in radiating; the exhaust gas circulation structure 8 is respectively connected with the electromagnetic valve structure 2, the supercharger 7 and the engine 5, and the exhaust gas circulation structure 8 is used for treating and releasing exhaust gas discharged after the reaction of the engine 5; when the supercharged air temperature is detected to be too high or too low, the engine control unit 9 is used for controlling the states of the electromagnetic valve structure 2 and the exhaust gas circulation structure 8.

In order to improve the accuracy of the regulation of the gas temperature, in the solenoid valve arrangement 2 of the system, there are at least two solenoid valves.

Optionally, the control system is further provided with a mixer 21, the mixer 21 is respectively connected with the supercharger 7 and the exhaust gas circulation structure 8, and the mixer 21 can mix the exhaust gas in the exhaust gas circulation structure 8 with the charging air in the supercharger 7, so that the exhaust gas generated through the combustion reaction in the engine 5 can be introduced into the pipeline for utilization again.

In the embodiment of the present application, the exhaust gas circulation structure 8 includes an exhaust gas circulation valve 22 and an exhaust gas circulation cooler 23, wherein the exhaust gas circulation valve 22 is connected to the mixer 21, one end of the exhaust gas circulation cooler 23 is connected to the exhaust gas circulation valve 22, and the other end is connected to the engine 5 and the supercharger 7, respectively. When a combustion reaction is performed in the engine 5, the generated exhaust gas is introduced into the exhaust gas circulation structure 8, in this case, the exhaust gas circulation cooler 23 in the exhaust gas circulation structure 8 may be used to reduce the temperature of the exhaust gas discharged from the engine 5, and then the exhaust gas circulation valve 22 controls the flow rate of the exhaust gas redirected to the mixer 21 to be mixed by controlling the opening degree of the valve.

Alternatively, in addition to detecting various parameters of the gas entering the engine, various parameters of the gas at the gas outlet end of the engine need to be detected as reference data for detecting whether the temperature of the gas required by the reaction inside the engine 5 reaches the expected standard, so that an outlet sensor 24 needs to be arranged between the electromagnetic valve structure 2 and the mixer 21, and the outlet sensor 24 can be used for detecting the temperature, the pressure and the flow rate of the air exiting the engine 5.

Optionally, the system is further provided with an air quality detector 25, and the air quality detector 25 is arranged between the engine 5 and the heater 4 and used for detecting the air quality value flowing through the engine 5 in real time so as to monitor whether the combustion reaction inside the engine 5 is sufficient or not.

Specifically, in the embodiment of the present application, the control procedure for air thermal management is as follows: firstly, after the fresh air after the supercharging of the supercharger of the engine 5 and the exhaust gas which is introduced from the exhaust gas of the engine 5 and cooled by the exhaust gas circulation cooler 23 are fully mixed in the mixer 21, the parameters of the temperature, the pressure, the flow rate and the like of the supercharged mixed air are collected by the exhaust gas sensor 24 and are transmitted to the engine control unit 9; meanwhile, the supercharged mixed air passing through the intercooler 1 passes through the air inlet sensor 3, and the parameters of the supercharged mixed air, such as temperature, pressure, flow speed and the like, are acquired, and are also transmitted to the engine control unit 9. The engine control unit 9 collects parameters such as temperature, pressure and flow velocity of the supercharged air according to the air outlet sensor 24 and the air inlet sensor 3, and controls and adjusts the opening degree of the exhaust gas circulating valve 22 by combining actual air usage parameters which are preset in the control unit and are required by the sufficient combustion of the engine 5, so that the flow rate of the exhaust gas is adjusted, the exhaust gas is fully mixed with the air supercharged by the supercharger 7 through the mixer 21 and then is cooled through a normally open area of the intercooler 1, so that the heat load of the engine 5 is reduced, and then the mixed air enters the engine 5 for combustion, so that the air inlet of the engine 5 is subjected to constant temperature control in a standard air temperature state.

It should be particularly noted that, during the combustion reaction inside the engine 5, the intake sensor 3 and the exhaust sensor 24 still need to detect the temperature parameters of the gas in real time and transmit them to the engine control unit 9 for analysis, when it is analyzed that the engine 5 still cannot meet the thermostatic control of the engine 5 after passing through the above control flow, it needs to determine whether the current intake temperature is too high or too low, if so, there are three solving flows, for example, the engine control unit 9 may define the too high temperature into three ranges based on two temperature thresholds: slightly higher, slightly taller and ultrahigh.

When the temperature of the current intake air is determined to be slightly higher, the engine control unit 9 adjusts the pressure, the flow rate and the like of the supercharged air passing through the intercooler 1 by controlling the opening degree of the first electromagnetic valve in the electromagnetic valve structure 2, and performs closed-loop control on the first electromagnetic valve by acquiring the parameters of the temperature, the pressure, the flow rate and the like of the supercharged and intercooled air through the intake sensor 3, so that the intake air of the engine 5 is subjected to constant temperature control in a standard air temperature state.

When the current inlet air temperature is determined to be slightly higher, the engine control unit 9 adjusts parameters such as the pressure and the flow rate of the pressurized air passing through the intercooler 1 by controlling the first electromagnetic valve to be fully opened and simultaneously controlling the opening degree of the second electromagnetic valve, and performs closed-loop control on the second electromagnetic valve by acquiring the parameters such as the temperature, the pressure and the flow rate of the pressurized and intercooled air through the inlet air sensor 3, so that the inlet air of the engine 5 is subjected to constant temperature control in a standard air temperature state.

When the current inlet air temperature is determined to be ultrahigh, the engine control unit 9 adjusts the air pressure, the flow rate and the like after pressurization of the intercooler 1 by controlling the first electromagnetic valve and the second electromagnetic valve to be fully opened and simultaneously performing auxiliary control by controlling the rotating speed of the fan 6 and the pressure ratio of the supercharger 7, and the engine control unit 9 performs closed-loop control on the rotating speed of the fan 6 and the pressure ratio of the supercharger 7 according to the parameters of the temperature, the pressure, the flow rate and the like of the air after pressurization and collected by the inlet air sensor 3, so that the inlet air of the engine 5 is subjected to constant temperature control in a standard air temperature state.

If the current intake air temperature is too low, the engine control unit 9 can acquire parameters such as the temperature, the pressure, the flow rate and the like of the supercharged air according to the air outlet sensor 24 and the air inlet sensor 3, and adjust and control the voltage and the current of the heater 4 by combining the actual air demand of the engine, so that the intake air of the engine 5 is subjected to constant temperature control in a standard air temperature state.

In the embodiment of the application, whether the combustion reaction of the engine is sufficient is determined by setting a control system with an intercooler 1, an electromagnetic valve structure 2, an air intake sensor 3, a heater 4, the engine 5, a fan 6, a supercharger 7, an exhaust gas circulation structure 8 and an engine control unit 9 to detect in real time, when the air temperature after supercharging is detected by the air intake sensor 3 to be too high or too low, it is determined that the combustion reaction inside the engine 5 does not meet the requirement, at the moment, the electromagnetic valve structure 2 and the exhaust gas circulation structure 8 can be adjusted through the engine control unit 9, the air intake temperature can reach the condition that the combustion of the engine 5 is sufficient, and meanwhile, the temperature rise and the temperature fall can be assisted by adjusting the rotating speed of the fan 6 and. This reduces the possibility that the intake/exhaust fluctuation is large and the operating efficiency of the engine 5 is affected when the engine 5 is operated.

The above-described embodiments of the present application describe in detail the air thermal management control system for the engine, and the following describes the air thermal management control method for the engine in the embodiments of the present application.

The method of the embodiment of the present application may be applied to a server, a terminal, or other devices with logic processing capability, and is not limited herein. For convenience of description, the following description will be given taking an execution main body as an engine control unit as an example.

Referring to fig. 3, an embodiment of a method for controlling thermal management of air at constant temperature of an engine according to an embodiment of the present application includes:

101. the engine control unit acquires a first detection value within a preset time;

in the embodiment of the application, the engine control unit needs to judge whether the engine reaches the air content and the temperature for sufficient combustion according to the gas content state of the reaction in the engine, and then determine the adjusting direction of the relevant part according to the judgment result. Before judging whether the engine reaches the content and the temperature of sufficient combustion according to the content state of gas reacted in the engine, the engine control unit needs to acquire the content ratio of the mixed gas detected by the gas outlet sensor as judgment data of whether the engine reaches the content and the temperature of the air of sufficient combustion.

102. The engine control unit judges whether the first detection value reaches a first preset value; if not, go to step 103;

the engine control unit is preset with a first preset value as a gas content ratio required by the internal reaction of the engine, and then the obtained content ratio of the mixed gas detected by the gas outlet sensor is compared with the first preset value, if the content ratio reaches, the internal full combustion reaction of the engine is indicated, and if the content ratio does not reach, the related parts need to be adjusted.

103. The engine control unit determines the regulating opening of an exhaust gas circulating valve in the exhaust gas circulating structure;

when the engine control unit determines that the first detection value does not reach the first preset value, the adjustment opening degree of the exhaust gas circulation valve in the exhaust gas circulation structure is determined.

104. The engine control unit controls the valve opening of the exhaust gas circulating valve according to the adjusting opening;

after determining the regulating opening of the exhaust gas recirculation valve in the exhaust gas recirculation system, the engine control unit sends a regulating signal to the exhaust gas recirculation valve according to the regulating opening determined by the reference data, so that the exhaust gas recirculation valve can regulate the valve opening according to the regulating signal.

105. The engine control unit acquires a second detection value for the second time;

in order to detect the control of whether or not the engine reaches the standard air temperature at this time after the exhaust gas circulation valve changes the valve opening degree, it is necessary to secondarily acquire the second detection value as the detection data of the detection.

106. The engine control unit judges whether the second detection value reaches a first preset value; if not, go to step 107;

after the opening of the exhaust gas circulation valve adjusting valve is adjusted, the engine control unit detects whether the second detected value obtained in the second time reaches the first preset value again, if yes, the condition that the interior of the engine achieves sufficient combustion after adjustment is shown, and if not, the condition that the interior of the engine does not achieve sufficient combustion due to other factors except gas content is shown.

107. The method comprises the steps that an engine control unit obtains a first air temperature value and a second air temperature value;

in the embodiment of the application, when the engine control unit determines that the second detection value does not reach the first preset value, it is necessary to determine whether the internal combustion of the engine is insufficient due to the fact that the temperature does not reach the standard or exceeds the standard by obtaining the temperature of the gas entering and exiting the engine, and therefore, the air temperature value detected by the air inlet sensor needs to be obtained as the first air temperature value, and the gas temperature value detected by the air outlet sensor and mixed with the exhaust gas is the second air temperature value.

108. The engine control unit judges whether the temperature state of the engine intake air is an abnormal state according to the first temperature value and the second temperature value; if yes, go to step 109;

after the first air temperature value and the second air temperature value are obtained, the temperature difference value between the first air temperature value and the second air temperature value can be calculated, and because the range of standard air temperature difference is preset in the engine control unit, the engine control unit can directly place the calculated temperature difference value in the preset temperature difference range for comparison, if the temperature difference value does not belong to the preset temperature difference range, the temperature in the engine is in an abnormal state, and the temperature needs to be adjusted; if the temperature difference value belongs to the preset temperature difference range, the engine possibly reaches the required standard after the second detection value is obtained, and the content ratio of the mixed gas detected by the gas outlet sensor needs to be obtained again for judgment.

109. The engine control unit determines the regulating opening of the solenoid valve in the solenoid valve structure and the regulating parameters of the relevant components according to the abnormal state.

When the engine control unit determines that the air temperature state of the engine inlet air is an abnormal state according to the first air temperature value and the second air temperature value, the adjusting opening degree of the electromagnetic valve in the electromagnetic valve structure and the adjusting parameters of the relevant components are determined according to the abnormal state.

In the embodiment of the application, an engine control unit can judge whether the gas content ratio of inlet gas and outlet gas of an engine reaches a standard through an obtained first detection value, if the gas content ratio of inlet gas and outlet gas of the engine does not reach the standard, the opening degree of a waste gas circulating valve in a waste gas circulating structure is determined and adjusted, after the adjustment, a second detection value is obtained to judge whether the gas content ratio of inlet gas and outlet gas of the engine reaches the standard for the second time, if the gas content ratio of inlet gas and outlet gas of the engine does not reach the standard, the temperature values of an inlet sensor and an outlet sensor are obtained, whether the temperature state of inlet gas and outlet gas of the engine is an abnormal state is determined according to the temperature values, and if the temperature ratio of. Thus, the influence of large fluctuation of intake and exhaust gas on the engine operation efficiency can be reduced.

Referring to fig. 4, in an embodiment of the present application, another embodiment of a method for controlling thermal management of air at a constant temperature of an engine includes:

201. the engine control unit acquires a first detection value within a preset time;

202. the engine control unit judges whether the first detection value reaches a first preset value; if yes, the process is ended, otherwise, step 203 is executed;

203. the engine control unit determines the regulating opening of an exhaust gas circulating valve in the exhaust gas circulating structure;

204. the engine control unit controls the valve opening of the exhaust gas circulating valve according to the adjusting opening;

205. the engine control unit acquires a second detection value for the second time;

206. the engine control unit judges whether the second detection value reaches a first preset value; if yes, go to step 207; if not, go to step 208;

steps 201 to 206 in this embodiment are similar to steps 101 to 106 in the previous embodiment, and are not described again here.

207. The engine control unit determines that the engine meets the condition of carrying out sufficient combustion reaction, and completes adjustment;

and when the engine control unit determines whether the second detection value reaches the first preset value, determining that the engine meets the condition of carrying out sufficient combustion reaction, and finishing the adjustment.

208. The method comprises the steps that an engine control unit obtains a first air temperature value and a second air temperature value;

step 208 in this embodiment is similar to step 107 in the previous embodiment, and is not described here again.

209. The engine control unit calculates a temperature difference value between a preset standard air temperature value and a first air temperature value;

210. the engine control unit judges whether the temperature state of the engine intake air is an abnormal state according to the first temperature value and the second temperature value; if yes, go to step 211; if not, returning to execute the step 205;

step 210 in this embodiment is similar to step 108 in the previous embodiment, and is not described herein again.

211. The engine control unit judges whether the abnormal state is a state with too low temperature; if yes, go to step 212; if not, go to step 213;

when the engine control unit determines that the air temperature state of the engine intake air is an abnormal state, it is necessary to further determine whether the abnormal state is an excessively high or excessively low air temperature, and perform a corresponding adjustment operation according to the excessively high or excessively low air temperature.

212. The engine control unit determines voltage and current parameters of the heater according to the temperature difference between the first air temperature value and the second air temperature value to increase the temperature;

when the engine control unit determines that the abnormal state is a state with too low temperature, the voltage and current parameters of the heater are determined according to the temperature difference between the first air temperature value and the second air temperature value to increase the temperature.

213. The engine control unit determines whether the first air temperature value is greater than a second preset value, if yes, step 214 is executed; if not, go to step 215;

when the engine control unit determines that the abnormal state is not a state with too low temperature, namely a state with too high temperature, the engine control unit defines three too high ranges by two preset values for the state with too high temperature: slightly higher, slightly higher and ultrahigh, different ranges perform different operations, and therefore it is also necessary to determine in which range the state of the excessive temperature is.

214. The engine control unit controls a first electromagnetic valve and a second electromagnetic valve of the electromagnetic valve structure to be fully opened, and determines the rotating speed of a fan and the pressure ratio of a supercharger according to the temperature difference value to assist in cooling;

when the engine control unit determines that the first air temperature value is greater than the second preset value, the abnormal state that the air temperature is ultrahigh is determined, the first electromagnetic valve and the second electromagnetic valve of the electromagnetic valve structure need to be controlled to be fully opened, and the rotating speed of the fan and the pressure ratio of the supercharger are determined according to the temperature difference value to assist in cooling.

215. The engine control unit judges whether the first air temperature value is smaller than a third preset value; if yes, go to step 216; if not, go to step 217;

216. the engine control unit determines the opening degree of a first electromagnetic valve of the electromagnetic valve structure according to the temperature difference value;

when the engine control unit determines that the first air temperature value is smaller than the third preset value, it is determined that the air temperature is in an abnormal state, and the opening degree of the first electromagnetic valve of the electromagnetic valve structure needs to be determined according to the temperature difference value obtained in step 209.

217. The engine control unit controls the first electromagnetic valve of the electromagnetic valve structure to be fully opened, and determines the opening degree of a second electromagnetic valve of the electromagnetic valve structure according to the temperature difference value.

When the engine control unit determines that the first air temperature value is not less than the third preset value, it is determined that the air temperature is in an abnormal state slightly higher than the third preset value, the first electromagnetic valve of the electromagnetic valve structure needs to be controlled to be fully opened, and the opening degree of the second electromagnetic valve of the electromagnetic valve structure is determined according to the temperature difference value obtained in step 209.

The effects of the related devices mentioned in the method for controlling the thermal management of the thermostatic air of the engine in the second aspect of the embodiment of the present application on the related devices in the system for controlling the thermal management of the thermostatic air of the engine in the first aspect of the embodiment of the present application are the same, and the detailed description is omitted here.

It is clear to those skilled in the art that, for convenience and brevity of description, the specific working processes of the above-described systems, apparatuses and units may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again.

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 manners. For example, the above-described apparatus embodiments are merely illustrative, and for example, the division of the units is only one logical division, and other divisions may be realized in practice, 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 through some interfaces, devices or units, 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.