WO2023001058A1

WO2023001058A1 - Dew cleaning control method and apparatus for throttle valve of gasoline engine, and device and storage medium

Info

Publication number: WO2023001058A1
Application number: PCT/CN2022/105756
Authority: WO
Inventors: 李家玲; 邹铁; 孙鹏远; 龙立; 杜大瑞; 曾玲鑫; 刘霄雨
Original assignee: 中国第一汽车股份有限公司
Priority date: 2021-07-19
Filing date: 2022-07-14
Publication date: 2023-01-26
Also published as: CN113431686A; CN113431686B

Abstract

A dew cleaning control method for a throttle valve of a gasoline engine. The method comprises: collecting an ambient temperature and an ambient humidity of an engine at a flameout moment; according to the ambient temperature and the ambient humidity, determining whether a cleaning condition is satisfied; on the basis of a determination result that the ambient temperature and the ambient humidity satisfy the cleaning condition, collecting an initial temperature of the engine at the flameout moment; according to the flameout moment, the initial temperature and the ambient temperature, determining an execution moment when the engine is cooled to a preset temperature, wherein the preset temperature is not lower than 0°C; and controlling a throttle valve to execute a cleaning action at the execution moment. Further disclosed are an apparatus, a device and a storage medium.

Description

Gasoline engine throttle dew cleaning control method, device, equipment and storage medium

This application claims the priority of the Chinese patent application with application number 202110811769.1 submitted to the China Patent Office on July 19, 2021, the entire content of which is incorporated herein by reference.

technical field

The present application relates to the technical field of throttle control, such as a gasoline engine throttle dew cleaning control method, device, equipment and storage medium.

Background technique

When the vehicle is in a low environment, the water vapor will condense into dew near the throttle valve. After the dew gathers, it may freeze, and in severe cases, the throttle valve plate will be stuck. When the engine is running, it may cause excessive current of the throttle motor and ablation. When the throttle valve is frozen, the throttle valve flap cannot be opened to the target position within the specified time after starting the engine, the system will report a fault code in the background, the engine will enter the torque limit state after ignition, and the throttle valve will not move when the accelerator pedal is pressed.

The protection method of the engine throttle in the related art is to achieve the purpose of breaking the ice by swinging back and forth a certain number of times within the preset position range. However, this control process will lead to a large duty cycle output of the throttle during the ice-breaking process, which reduces the service life.

application content

Embodiments of the present application provide a gasoline engine throttle valve dew cleaning control method, device, equipment and storage medium.

In a first aspect, the present application provides a gasoline engine throttle valve dew cleaning control method, including:

Collect the ambient temperature and ambient humidity of the engine at the moment of flameout;

judging whether a cleaning condition is met according to the ambient temperature and the ambient humidity;

Based on the judging result that the ambient temperature and the ambient humidity meet the cleaning conditions, collecting the initial temperature of the engine at the moment of flameout;

According to the flameout time, the initial temperature and the ambient temperature, determine the execution time when the engine drops to a preset temperature, wherein the preset temperature is not less than 0°C;

The throttle valve is controlled to perform a cleaning action at the execution time.

In the second aspect, the present application provides a gasoline engine throttle dew cleaning control device, including:

The ambient temperature and humidity acquisition module is configured to obtain the ambient temperature and ambient humidity of the engine at the moment of flameout;

A cleaning condition judging module, configured to judge whether a cleaning condition is met according to the ambient temperature and the ambient humidity;

The engine temperature acquisition module is configured to acquire the initial temperature of the engine at the moment of flameout based on the judgment result that the ambient temperature and the ambient humidity meet the cleaning conditions;

The execution time determination module is configured to determine the execution time when the engine drops to a preset temperature according to the flameout time, the initial temperature and the ambient temperature;

The cleaning action control module is configured to control the throttle valve to perform the cleaning action at the execution time.

In a third aspect, the present application provides a device, including a memory, a processor, and a computer program stored on the memory and operable on the processor. When the processor executes the computer program, the dew water cleaning of the throttle valve of a gasoline engine as described above is realized. Control Method.

In a fourth aspect, the present application further provides a computer-readable storage medium, the computer-readable storage medium stores computer instructions, and the computer instructions cause the computer to execute the above-mentioned gasoline engine throttle dew cleaning control method.

Description of drawings

Fig. 1 is a schematic flow chart of a gasoline engine throttle valve dew cleaning control method according to Embodiment 1 of the present application;

Fig. 2 is a schematic flow chart of step S100 of the gasoline engine throttle valve dew cleaning control method according to Embodiment 1 of the present application;

Fig. 3 is a schematic flow chart of step S200 of the gasoline engine throttle valve dew cleaning control method according to Embodiment 1 of the present application;

Fig. 4 is a schematic flow chart of step S400 of the gasoline engine throttle valve dew cleaning control method according to Embodiment 1 of the present application;

Fig. 5 is a schematic flow chart of step S500 of the gasoline engine throttle valve dew cleaning control method according to Embodiment 1 of the present application;

Fig. 6 is a schematic flow chart of step S501 of the gasoline engine throttle valve dew cleaning control method according to Embodiment 1 of the present application;

Fig. 7 is a schematic flow chart of a part of the gasoline engine throttle valve dew cleaning control method according to Embodiment 2 of the present application;

Fig. 8 is a schematic flow chart of a part of the gasoline engine throttle dew cleaning control method according to Embodiment 3 of the present application;

FIG. 9 is a schematic structural diagram of a gasoline engine throttle valve dew cleaning control device according to Embodiment 4 of the present application.

detailed description

The application will be described below in conjunction with the accompanying drawings and embodiments. It should be understood that the embodiments described here are only used to explain the present application. In addition, it should be noted that, for the convenience of description, only some structures related to the present application are shown in the drawings but not all structures.

In the description of this application, the terms "connected", "connected" and "fixed" should be understood in a broad sense, for example, it can be a fixed connection, or a detachable connection, or integrated; it can be a mechanical connection, or a Electrical connection; it can be directly connected or indirectly connected through an intermediary, and it can be the internal communication of two components or the interaction relationship between two components. Those skilled in the art can understand the meanings of the above terms in this application according to the actual situation.

In this application, a first feature being "on" or "under" a second feature may include that the first and second features are in direct contact, and may also include that the first and second features are not in direct contact but pass between them. additional feature contacts. Moreover, "above", "above" and "above" the first feature on the second feature include that the first feature is directly above and obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. "Below", "beneath" and "under" the first feature to the second feature include that the first feature is directly below and obliquely below the second feature, or means that the first feature has a lower level than the second feature.

In the description of this embodiment, the terms "up", "down", "right", and other orientations or positional relationships are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of description and simplification of operations, rather than indicating Or imply that a referenced device or element must have a particular orientation, be constructed, and operate in a particular orientation. In addition, the terms "first" and "second" are only used to distinguish in description, and have no special meaning.

First, introduce and explain several terms involved in this application:

1. Gasoline Engine (Gasoline Engine) is an engine that uses gasoline as fuel to convert internal energy into kinetic energy. Because gasoline has low viscosity and evaporates quickly, the gasoline injection system can be used to inject gasoline into the cylinder, and after compression reaches a certain temperature and pressure, it is ignited with a spark plug to make the gas expand and do work. The gasoline engine is characterized by high speed, simple structure, light weight, low cost, stable operation, and convenient use and maintenance. Gasoline engines are widely used in cars, especially small cars.

2. The throttle valve is a controllable valve that controls the air entering the engine. After the gas enters the intake pipe, it will be mixed with gasoline to become a combustible mixture, thus burning to form work. The upper end of the throttle is connected to the air filter, and the lower end is connected to the engine block, which is called the throat of the car engine. Whether the car accelerates flexibly has a lot to do with the dirtiness of the throttle valve. Cleaning the throttle valve can reduce fuel consumption and make the engine flexible and powerful.

3. Dew, if the vehicle is parked for too long, the water vapor in the air will condense into water droplets in the intake manifold as the engine temperature decreases.

The present application will be described in detail below with specific examples. The following embodiments may be combined with each other, and the same or similar concepts or processes may not be repeated in some embodiments. Embodiments of the present application will be described below in conjunction with the accompanying drawings.

Referring to Fig. 1, it shows a schematic flow chart of a gasoline engine throttle valve dew cleaning control method, as shown in the figure, the method includes:

S100. Collect the ambient temperature H ₀ and the ambient humidity Hu _{0 of the engine at a flameout time t 0} _.

FIG. 2 is a flow chart of step S100 of the method for controlling the dew cleaning of the throttle valve of a gasoline engine according to Embodiment 1 of the application. As shown in Figure 2, step S100 includes the following steps S101-S102:

S101. Obtain the engine stop time t ₀ . When the vehicle engine is turned off, the vehicle electronic control unit (Electronic Control Unit, ECU) records the moment t ₀ .

S102. Obtain the ambient temperature H ₀ and the ambient humidity Hu ₀ .

The ambient temperature H0 and the ambient humidity Hu ₀ when the engine of the automobile is turned off are obtained respectively through the ambient temperature sensor and the ambient humidity sensor. And send two data to the car ECU.

It should be noted that both the ambient temperature H ₀ and the ambient humidity Hu ₀ are measured at the moment when the engine is turned off, and it can be understood that the temperature will not change drastically in a long period of time, so that the execution time calculated later There will be no major errors. Continuing to refer to FIG. 1 , after step S100, enter step S200, in step S200, judge whether the cleaning condition is satisfied according to the ambient temperature H ₀ and the ambient humidity Hu ₀ .

Referring to FIG. 3, step S200 includes the following steps S201-S202:

S201. Compare the magnitude of the ambient temperature H ₀ with the calibrated ambient temperature H ₁ , and compare the magnitude of the ambient humidity Hu ₀ with the calibrated ambient humidity Hu ₁ .

The automotive ECU stores the calibrated ambient temperature H ₁ and the calibrated ambient humidity Hu ₁ , and calculates the difference between the ambient temperature H ₀ and the calibrated ambient temperature H ₁ , and the difference between the ambient humidity Hu ₀ and the calibrated ambient humidity Hu ₁ .

S202. If the ambient temperature H ₀ is lower than the calibrated ambient temperature H ₁ , and the ambient humidity Hu ₀ is higher than the calibrated ambient humidity Hu ₁ , it is determined that the cleaning condition is met.

If the difference between the calculated ambient temperature H ₀ and the calibrated ambient temperature H ₁ is less than 0, and the difference between the ambient humidity Hu ₀ and the calibrated ambient humidity Hu ₁ is greater than 0, the cleaning condition is determined to be satisfied. Referring to Fig. 1, after step S200, enter step S300, in step S300, based on the judging result that the ambient temperature and the ambient humidity meet the cleaning conditions, the initial temperature T ₀ of the engine at the flameout time t ₀ is collected.

In an embodiment, the initial temperature T ₀ at the flame-off time t ₀ is acquired through a water temperature sensor on the water outlet of the engine at the flame-off time t ₀ . It should be noted that the engine temperature is consistent with the temperature of the water outlet of the engine, and the temperature of the water outlet is easy to measure, therefore, the temperature measured at the water outlet of the engine is regarded as the temperature of the engine.

Referring to Fig. 1, step S300 is followed by step S400. In step S400, the execution time t ₁ when the engine drops to the preset temperature T ₁ is determined according to the flameout time t ₀ , the initial temperature T ₀ and the ambient temperature H ₀ , wherein the preset Let the temperature T1 not be less _than 0°C.

It should be noted that in step S400, the preset temperature T1 is set to not less _than 0°C, which can respond in time when it is about to freeze but not yet, and at the same time avoid starting the cleaning action prematurely when the temperature is high without reaching dew Cleansing effect. In the embodiment of the present application, the range of the preset temperature T ₁ is 0-2°C, for example, it can be set to 0.5°C.

Normally, after the car has been running for 20 minutes, the engine temperature T can reach about 90°C. When the engine is turned off and the engine temperature T is affected by the external environment and the temperature drops to 0.5°C, the throttle valve needs to be cleaned.

Of course, the preset temperature T ₁ in the embodiment of the present application can be set to other values, such as 0.1°C, 0.6°C, 1.8°C, etc. In consideration of saving computing power and the environment will not change suddenly, the preset temperature T ₁ is close to 0°C The cleaning action can be performed at 0.5°C to avoid dew on the throttle surface from freezing after the engine temperature T continues to drop.

Referring to FIG. 4, step S400 includes the following steps S401-S402:

S401. According to the initial temperature T ₀ , the ambient temperature H ₀ and the engine calibration coefficient a, obtain the cooling time from the initial temperature T ₀ to the preset temperature T ₁ .

S402. Obtain the execution time t ₁ according to the flame-out time t ₀ and the cooling time.

In the present embodiment, the functional relationship T(t) of time t and engine temperature T is constructed, and the value of _tt0 is obtained:

T(t)＝H ₀ +(T ₀ -H ₀ )e ^a(t-t0)

Among them, a is a calibration constant related to the engine; T ₀ is the engine temperature at the flameout time t ₀ , and H ₀ is the ambient temperature.

The functional relationship between the execution time t ₁ and the flameout time t ₀ and tt ₀ is: t ₁ =t ₀ +(tt ₀ ).

For example, if the value of tt ₀ is calculated as 2400 (seconds) through the functional relationship T(t) between time t and engine temperature T, that is, 40 minutes, and the flameout time t ₀ is 9:15, then the result of time t1 is executed It's nine fifty-five.

It should be noted that the unit of the value of tt ₀ obtained according to the above two formulas is seconds, therefore, the structure for obtaining the execution time t ₁ is also accurate to seconds. That is, if the flameout time t ₀ is 9:15:28, the calculated value of tt ₀ is 2400 (seconds), that is, 40 minutes, then the result of executing the time t ₁ is 9:55:2 eighteen seconds.

In order to save computing power, the value of tt ₀ can also be rounded to minutes. For example, if the calculated value of tt ₀ is 2428 (seconds), that is, forty minutes and twenty-eight seconds, it can be approximately equal to forty minutes. Time t ₀ is 9:15:28, which is regarded as 9:15, and the execution time is regarded as 9:55.

Referring to FIG. 1 , step S400 is followed by step S500 , and in step S500 , the throttle valve is controlled to perform a cleaning action at the execution time.

As shown in Figure 5, step S500 includes the following steps S501-S503:

S501. Control the throttle valve to rotate in an opening direction to a first opening degree θ1, and then rotate in a closing direction to a second opening degree θ2.

S502. After repeating the step of rotating the throttle valve in the opening direction to the first opening degree and then rotating the throttle valve in the closing direction to the second opening degree N times, control the throttle valve to return to the natural opening degree.

S503. The count is reset to zero.

By controlling the throttle valve to reciprocate N times between the first opening degree θ1 and the second opening degree θ2, the dew on the surface of the throttle valve is shaken off to avoid dew accumulation and freezing. When repeated to the Nth time, the throttle valve is normally closed and counted Cleared to facilitate the next recount.

Understandably, N is a positive integer greater than 1.

In the embodiment of the present application, the first opening degree θ1 is set to 85°, the second opening degree θ2 is set to 2°, from the natural opening degree (in the embodiment of the present application, the natural opening degree is set to 5°) along the opening direction Rotate to 85° and then rotate to 2° in the closing direction, reciprocate once and count once, repeat until the end of the fourth time, control the throttle back to the natural opening of 5°, and reset the count to facilitate the next count. Moreover, after the count is reset to zero, it is deemed that the gasoline engine throttle dew cleaning control is completed.

As shown in Figure 6, step S501 includes the following steps S5011-S5017:

S5011. Control the throttle valve to rotate along the opening direction to the first opening degree θ1, and start timing to obtain the first duration.

S5012. When the first duration reaches the detection duration, detect the first actual opening degree θ10, stop timing and clear the first duration.

S5013. Determine whether the difference between the first actual opening degree θ10 and the first opening degree θ1 is within the first preset opening degree range.

S5014. Based on the judgment result that the difference between the first actual opening degree θ10 and the first opening degree θ1 is within the first preset opening degree range, control the throttle valve to rotate in the closing direction to the second opening degree θ2, and start timing to obtain Second duration.

S5015. When the second duration reaches the detection duration, detect the second actual opening degree θ20, stop timing, and clear the second duration.

S5016. Determine whether the difference between the second actual opening degree θ20 and the second opening degree θ2 is within the second preset opening degree range.

S5017. Count once based on the judgment result that the difference between the second actual opening degree θ20 and the second opening degree θ2 is within the second preset opening degree range.

In the embodiment of the present application, the detection duration is 200 milliseconds, the first preset opening range is 0-2°, and the second preset opening range is consistent with the first preset opening range.

In one embodiment, the automobile ECU issues an instruction that the throttle valve is rotated to 85° along the opening direction, and starts timing to obtain the first duration. Opening degree θ10, stop timing and clear the first duration. If the first actual opening θ10 is 84°, the difference between the first actual opening θ10 and the first opening θ1 is within the first preset opening range of 0-2°, and then the ECU of the car sends the throttle edge to close Rotate the direction to 2° command, and start timing to obtain the second duration. When the second duration reaches 200 milliseconds, the throttle position sensor detects the second actual opening degree θ20 again, stops timing, and resets the second duration. If the second actual opening θ20 is 3°, the difference between the second actual opening θ20 and the second opening θ2 is within the second preset opening range of 0-2°, and counted once. After step S5017, go to step S502. In step S502, when it is repeated for the Nth time, the throttle valve is controlled to return to the natural opening degree of 5°.

This control method can activate the cleaning program when the initial temperature T ₀ drops to the preset temperature T ₁ , and can perform dew cleaning before freezing, greatly reducing the probability of throttle freezing, and at the same time greatly reducing the throttle's ability to break ice. The duty cycle output during the process prolongs the service life of the throttle valve.

It should be noted that after step S5013 and step S5016, it also includes: S5018, based on the difference between the first actual opening degree θ10 and the first opening degree θ1 being outside the preset opening range, or the second actual opening degree θ20 and the second If the difference of the opening θ20 is outside the preset opening range, stop counting.

After step S5018, it also includes: step S5019, sending out an alarm.

It should be noted that the way of sending out the alarm can be set to turn on the fault lamp. Or, the way of sending out the alarm can be the subtitle information displayed on the central control screen. Caption information may include: Throttle Failure.

It should be noted that step S5019 is followed by step S503, and in S503, the count is reset to zero.

For example, the car ECU issues an instruction to rotate the throttle to 85° along the opening direction, and starts timing to obtain the first duration. When the first duration reaches 200 milliseconds, the opening sensor detects the first actual opening θ10 at this time, and stops Time and reset the first duration to zero. If the first actual opening θ10 is 70°, the difference between it and the first opening θ1 is not within the first preset opening range 0-2°, stop counting, and send an alarm. Alternatively, the automobile ECU sends an instruction to rotate the throttle valve to 2° along the closing direction, and starts timing to obtain the second duration; when the second duration reaches 200 milliseconds, the opening sensor detects the second actual opening θ20 again, and stops the timing. And clear the second duration to zero. If the second actual opening θ20 is 20°, the difference between the second actual opening θ2 and the second opening θ2 is not within the second preset opening range of 0-2°, stop counting, and turn on the fault light. After the fault lamp is turned on, enter step S503, and in step S503, the count is reset to zero.

If the difference between the first actual opening degree θ10 and the first opening degree θ1 is outside the first preset opening degree range, it indicates that the opening direction is hindered, resulting in a limited swing range of the throttle valve, affecting the dew drying efficiency, or the second The difference between the actual opening degree θ20 and the second opening degree θ2 is outside the second preset opening degree range, indicating that the closing direction is hindered, resulting in a limited swing range of the throttle valve, which affects dew drying, and is considered a cleaning failure. , after which the count is reset to zero. After the throttle valve is repaired, the count is recalculated, and no misjudgment will occur.

Embodiment two:

Embodiment 2 is substantially the same as Embodiment 1, the difference being that there are other steps between steps S400 and S500. FIG. 7 is a partial flow diagram of the gasoline engine throttle valve dew cleaning control method according to Embodiment 2 of the present application. As shown in Figure 7, the following steps may be included after step S400:

S601. Obtain battery voltage V ₁ .

S602. Determine whether the battery voltage V ₁ is greater than the calibrated voltage value V ₀ .

Based on the judging result that the battery voltage V1 is greater _than the nominal voltage value _V0 , after step S602, enter step S500.

Based on the judging result that the battery voltage V ₁ is lower than the calibrated voltage value V ₀ , after step S602, enter step S603, and in step S603, issue a low voltage prompt.

For example, the battery voltage of a car is generally around 12V, and it will increase to 13V-14V after the vehicle is started. In the embodiment of this application, the calibration voltage value _V0 is set to 11V. After the engine is turned off, the ECU will still work for a period of time. (for example 5s), the car ECU reads the voltage, if it is higher than 11V, for example 12V, it means that the battery voltage meets the calibrated voltage value V ₀ , and the cleaning procedure can be continued without affecting the restart of the engine, and subsequent cleaning actions can be performed.

The car ECU reads the voltage. If it is lower than 11V, such as 10V, it means that the battery voltage does not meet the calibrated voltage value V _0. If the cleaning procedure is continued, it is easy to affect the engine start. Therefore, if the battery voltage does not meet the calibrated voltage value V ₀ , then Subsequent cleaning actions are not performed.

The advantage of the second embodiment is to avoid affecting the starting of the engine.

Embodiment three:

Embodiment 3 is roughly the same as Embodiment 1, except that there are other steps between steps S400 and S500. FIG. 8 is a partial flow chart of the gasoline engine throttle valve dew cleaning control method according to Embodiment 3 of the present application. As shown in Figure 8, the following steps are also included after step S400:

S701. Detect whether a fault signal is received.

Based on the detection result that the fault signal is not received, proceed to step S202.

Based on the detection result of receiving the fault signal, enter step S702, and in step S702, issue a fault prompt.

In one embodiment, after step S400, go to step S701. In step S701, check whether a fault signal is received, and proceed to step S500 based on the detection result that no fault signal is received. If a battery failure signal is received, for example, a battery failure prompt is issued.

Optionally, the fault signals include the following:

1. Battery fault signal, for example, if the battery fault light is on, once the car’s battery signal light is still on after the car is started, it means that the battery is abnormal. At this time, it is recommended not to drive. Even if you drive, you can’t run for a long time. , In order to reduce the damage scope of the fault, it should be repaired in time to avoid safety problems that endanger the engine.

2. Engine water temperature fault signal, for example, if the water temperature fault light is on, once the car is short of water, the temperature of the car will rise sharply. At this time, problems such as deformation of the engine cylinder are trivial. It's a car crash. If the water temperature fault light shows a blue signal light, it means that the water temperature is too low, and if the water temperature fault light is red, it means that the water temperature is too high. When the water temperature is too high, you need to add coolant or pure water to cool down. Stop in time for maintenance.

3. Oil fault signal, for example, if the oil fault light is on, once the oil signal light is on, it may be due to insufficient oil, low oil pressure, etc. At this time, it is necessary to stop in time and check the cause of the signal light failure. If the owner does not pay attention, it will Engine wear, oil blockage, oil pump damage, etc., will eventually lead to serious damage to the engine after driving for a long time.

4. Engine fault signal, such as the engine fault light is on. Once the engine fault light is always on, it means that the engine is faulty. At this time, you can only stop and wait for a professional to check, otherwise it will affect the performance of the vehicle.

The above four faults have priority over the throttle valve icing fault. Therefore, if the above four fault signals are received, it is meaningless to judge whether there is throttle valve freezing or not, so as to save computing power.

Embodiment four:

This embodiment provides a gasoline engine throttle dew cleaning control device, as shown in Figure 9, the control device includes: an ambient temperature and humidity acquisition module 10, a cleaning condition judgment module 20, an engine temperature acquisition module 30, an execution time determination module 40 and a cleaning action control module 50 . Wherein, the ambient temperature and humidity acquisition module 10 is configured to acquire the ambient temperature H ₀ and the ambient humidity Hu _{0 of the engine at the engine-off time t 0} _. The cleaning condition judging module 20 is configured to judge whether the cleaning condition is satisfied according to the ambient temperature H ₀ and the ambient humidity Hu ₀ . The engine temperature obtaining module 30 is configured to obtain the initial temperature T ₀ of the engine at the flame-off time t ₀ based on the judgment result that the ambient temperature and the ambient humidity meet the cleaning condition. The execution time determination module 40 is configured to determine the execution time t ₁ when the engine drops to the preset temperature T ₁ according to the flameout time t ₀ , the initial temperature T ₀ and the ambient temperature H ₀ . The cleaning action control module 50 is configured to control the throttle valve to perform the cleaning action at execution time _t1 . The gasoline engine throttle dew cleaning control device can activate and execute the cleaning program when the initial temperature drops to the preset temperature, and can then perform dew cleaning before freezing, greatly reducing the probability of throttle freezing, and at the same time greatly reducing the temperature of the throttle. The duty cycle output in the process of breaking ice prolongs the service life of the throttle valve.

Embodiment five:

This embodiment provides a device, which includes a memory, a processor, and a computer program stored in the memory and operable on the processor. When the processor executes the computer program, the above method for controlling the dew cleaning of the throttle valve of a gasoline engine is realized. The device can activate the cleaning program when the initial temperature drops to the preset temperature, and then perform dew cleaning before freezing, which greatly reduces the probability of throttle freezing, and at the same time greatly reduces the throttle valve in the process of ice breaking. The air ratio output prolongs the service life of the throttle valve.

In an optional embodiment, a device is provided, and the device includes: a processor and a memory. Wherein, the processor and the memory are connected, such as through a bus. Optionally, the device may also include a transceiver.

The processor can be CPU (Central Processing Unit, central processing unit), general processor, DSP (Digital Signal Processor, data signal processor), ASIC (Application Specific Integrated Circuit, application specific integrated circuit), FPGA (Field Programmable Gate Array, field programmable gate array) or other programmable logic devices, transistor logic devices, hardware components, or any combination thereof. It can implement or execute the various illustrative logical blocks, modules and circuits described in connection with the present disclosure. The processor can also be a combination of computing functions, for example, a combination of one or more microprocessors, a combination of DSP and a microprocessor, and the like.

A bus may include a path for transferring information between the above-mentioned components. The bus can be a PCI (Peripheral Component Interconnect, peripheral component interconnection standard) bus or an EISA (Extended Industry Standard Architecture, extended industry standard architecture) bus, etc. Can be divided into address bus, data bus, control bus and so on.

The memory can be ROM (Read Only Memory, read-only memory) or other types of static storage devices that can store static information and instructions, RAM (Random Access Memory, random access memory) or other types of dynamic memory that can store information and instructions The storage device can also be EEPROM (Electrically Erasable Programmable Read Only Memory, Electrically Erasable Programmable Read Only Memory), CD-ROM (Compact Disc Read Only Memory, CD-ROM) or other CD storage, CD storage (including compact CD , laser disc, optical disc, digital versatile disc, blu-ray disc, etc.), magnetic disk storage medium or other magnetic storage device, or other devices capable of carrying or storing desired program code in the form of instructions or data structures and accessible by a computer medium.

The memory is used to store the application program code for executing the solution of the present application, and the execution is controlled by the processor. The processor is configured to execute the application program code stored in the memory, so as to realize the contents shown in the foregoing method embodiments.

Embodiment six:

This embodiment provides a computer-readable storage medium, which stores computer instructions, and the computer instructions cause the computer to execute the steps of the above-mentioned gasoline engine throttle valve dew cleaning control method. The computer-readable storage medium can activate a cleaning program when the initial temperature drops to a preset temperature, and can then perform dew cleaning before freezing, greatly reducing the probability of throttle freezing, and at the same time greatly reducing the throttle's ability to break ice. The duty cycle output during the process prolongs the service life of the throttle valve.

It should be understood that although the various steps in the flow chart of the accompanying drawings are displayed sequentially according to the arrows, these steps are not necessarily executed sequentially in the order indicated by the arrows. Unless otherwise specified herein, there is no strict order restriction on the execution of these steps, and they can be executed in other orders. Moreover, at least some of the steps in the flowcharts of the accompanying drawings may include multiple sub-steps or multiple stages, and these sub-steps or stages are not necessarily executed at the same time, but may be executed at different times, and the order of execution is also It is not necessarily performed sequentially, but may be performed alternately or alternately with at least a part of other steps or sub-steps or stages of other steps.

Claims

A gasoline engine throttle dew cleaning control method, comprising:

Collect the ambient temperature and ambient humidity of the engine at the moment of flameout;

judging whether a cleaning condition is met according to the ambient temperature and the ambient humidity;

Based on the judgment result that the ambient temperature and the ambient humidity meet the cleaning condition, collecting the initial temperature of the engine at the moment of flameout;

According to the flameout time, the initial temperature and the ambient temperature, determine the execution time when the engine drops to a preset temperature, wherein the preset temperature is not less than 0°C;

The throttle valve is controlled to perform a cleaning action at the execution time.
The gasoline engine throttle valve dew cleaning control method according to claim 1, wherein, according to the flameout time, the initial temperature and the ambient temperature, determining the execution time when the engine drops to a preset temperature includes :

According to the initial temperature, the ambient temperature and the engine calibration coefficient, obtain the cooling time from the initial temperature to the preset temperature;

The execution time is obtained according to the flame-off time and the cooling time.
The gasoline engine throttle valve dew cleaning control method according to claim 1, wherein said controlling the throttle valve to perform the cleaning action at the execution time comprises:

Control the throttle to rotate in the opening direction to the first opening degree and then in the closing direction to the second opening degree;

After repeating the step of controlling the throttle valve to rotate to the first opening degree along the opening direction to the first opening degree along the closing direction to the second opening degree along the closing direction, control the throttle valve to return to the natural opening degree; wherein, N is greater than 1 positive integer;

The count is cleared.
The gasoline engine throttle dew cleaning control method according to claim 3, wherein the control throttle rotates in the opening direction to a first opening degree, and then rotates in a closing direction to a second opening degree, comprising:

controlling the throttle valve to rotate in the opening direction to the first opening degree, and starting timing to obtain the first duration;

When the first duration reaches the detection duration, detect the first actual opening, stop timing and clear the first duration;

judging whether the difference between the first actual opening degree and the first opening degree is within a first preset opening degree range;

Based on the judgment result that the difference between the first actual opening degree and the first opening degree is within the first preset opening degree range, the throttle valve is controlled to rotate in the closing direction to the second opening degree, and starts Timing to obtain the second duration;

When the second duration reaches the detection duration, detect the second actual opening, stop timing, and reset the second duration;

judging whether the difference between the second actual opening degree and the second opening degree is within a second preset opening degree range;

Counting once based on the judgment result that the difference between the second actual opening degree and the second opening degree is within a second preset opening degree range.
According to the gasoline engine throttle dew cleaning control method according to claim 4, the control throttle rotates along the opening direction to the first opening degree and then rotates along the closing direction to the second opening degree, further comprising:

Based on the fact that the difference between the first actual opening and the first opening is outside the preset opening range or the difference between the second actual opening and the second opening is within the preset opening If the judgment result is outside the range, stop counting;

Alert;

The count is cleared.
According to the gasoline engine throttle valve dew cleaning control method according to claim 1, before controlling the throttle valve to perform the cleaning action at the execution time, further comprising:

Get battery voltage;

judging whether the battery voltage is greater than a calibrated voltage value;

Execute the cleaning action at the execution time based on the judgment result that the battery voltage is greater than the calibrated voltage value;

Based on the judgment result that the battery voltage is not greater than the calibrated voltage value, a low voltage prompt is issued.
According to the gasoline engine throttle valve dew cleaning control method according to claim 1 or 6, before controlling the throttle valve to perform the cleaning action at the execution time, it also includes:

Detect whether a fault signal is received;

performing the cleaning action based on the detection result that the failure signal is not received;

Based on the detection result of receiving the fault signal, a fault prompt is issued.
A gasoline engine throttle dew cleaning control device, comprising:

The ambient temperature and humidity acquisition module is configured to obtain the ambient temperature and ambient humidity of the engine at the moment of flameout;

A cleaning condition judging module, configured to judge whether the cleaning condition is met according to the ambient temperature and the ambient humidity;

The engine temperature acquisition module is configured to acquire the initial temperature of the engine at the moment of flameout based on the judgment result that the ambient temperature and the ambient humidity meet the cleaning condition;

The execution time determination module is configured to determine the execution time when the engine drops to a preset temperature according to the flameout time, the initial temperature and the ambient temperature, wherein the preset temperature is not less than 0°C;

The cleaning action control module is configured to control the throttle valve to perform the cleaning action at the execution time.
A device comprising a memory, a processor, and a computer program stored on the memory and operable on the processor, when the processor executes the program, the gasoline engine throttle valve according to any one of claims 1 to 7 is realized Dew cleaning control methods.
A computer-readable storage medium, the computer-readable storage medium stores computer instructions, and the computer instructions cause the computer to execute the dew cleaning control method for throttle valves of gasoline engines according to any one of claims 1 to 7.