CN115126609A - Engine air intake control system and method - Google Patents

Engine air intake control system and method Download PDF

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Publication number
CN115126609A
CN115126609A CN202110605917.4A CN202110605917A CN115126609A CN 115126609 A CN115126609 A CN 115126609A CN 202110605917 A CN202110605917 A CN 202110605917A CN 115126609 A CN115126609 A CN 115126609A
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CN
China
Prior art keywords
humidity
current
valve position
engine
air inlet
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Pending
Application number
CN202110605917.4A
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Chinese (zh)
Inventor
王小平
曹万
王红明
梁世豪
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Wuhan Finemems Inc
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Wuhan Finemems Inc
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Publication date
Application filed by Wuhan Finemems Inc filed Critical Wuhan Finemems Inc
Priority to CN202110605917.4A priority Critical patent/CN115126609A/en
Publication of CN115126609A publication Critical patent/CN115126609A/en
Pending legal-status Critical Current

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D41/00—Electrical control of supply of combustible mixture or its constituents
    • F02D41/0002—Controlling intake air
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D29/00—Controlling engines, such controlling being peculiar to the devices driven thereby, the devices being other than parts or accessories essential to engine operation, e.g. controlling of engines by signals external thereto
    • F02D29/02—Controlling engines, such controlling being peculiar to the devices driven thereby, the devices being other than parts or accessories essential to engine operation, e.g. controlling of engines by signals external thereto peculiar to engines driving vehicles; peculiar to engines driving variable pitch propellers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D9/00—Controlling engines by throttling air or fuel-and-air induction conduits or exhaust conduits
    • F02D9/08—Throttle valves specially adapted therefor; Arrangements of such valves in conduits
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D2200/00—Input parameters for engine control
    • F02D2200/02—Input parameters for engine control the parameters being related to the engine
    • F02D2200/04—Engine intake system parameters
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D2200/00—Input parameters for engine control
    • F02D2200/02—Input parameters for engine control the parameters being related to the engine
    • F02D2200/04—Engine intake system parameters
    • F02D2200/0414—Air temperature
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D2200/00—Input parameters for engine control
    • F02D2200/02—Input parameters for engine control the parameters being related to the engine
    • F02D2200/04—Engine intake system parameters
    • F02D2200/0418—Air humidity
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/10—Internal combustion engine [ICE] based vehicles
    • Y02T10/40—Engine management systems

Abstract

The invention discloses an engine air inlet control system and method. The system comprises: the air conditioner comprises an air inlet pipeline communicated with an air inlet of an engine, an air inlet branch communicated with the air inlet pipeline through a first regulating valve, a humidity sensor and a controller connected with the first regulating valve and the humidity sensor; the controller receives the current temperature of the air inlet detected by the temperature sensor, determines the preset humidity corresponding to the current working condition, and sends a signal to the first regulating valve when the current humidity is greater than the preset humidity so as to enlarge the first regulating valve to the corresponding valve position, so that the gas in the air inlet pipeline and the gas in the air inlet branch are mixed and transmitted to the air inlet of the engine, and the gas in the air inlet branch is the dehumidifying gas with the target humidity. The invention controls the valve position of the first regulating valve according to the current working condition, controls the flow of the dehumidifying gas entering the air inlet pipeline, ensures that the humidity of the mixed gas conforms to the current working condition, monitors and controls the actual air inlet humidity of the engine, and improves the working efficiency of the engine.

Description

Engine air intake control system and method
Technical Field
The invention relates to the technical field of automobiles, in particular to an engine air inlet control system and method.
Background
The engine is one of the important parts in the automobile and is used for providing power for the automobile. When the engine works, the influence factors of the working efficiency of the engine mainly comprise air inlet temperature, air inlet humidity and air inlet pressure, and the existing automobile cannot monitor and control the actual air inlet condition of the engine, so that the working efficiency of the engine is low.
The above is only for the purpose of assisting understanding of the technical aspects of the present invention, and does not represent an admission that the above is prior art.
Disclosure of Invention
The invention mainly aims to provide an engine air intake control system and method, and aims to solve the technical problem that the working efficiency of an engine is low because the actual air intake condition of the engine cannot be monitored and controlled by the conventional automobile.
To achieve the above object, the present invention provides an engine intake control system including: the air inlet pipeline, the air inlet branch, the first regulating valve, the humidity sensor and the controller are arranged on the air inlet pipeline;
the air inlet pipeline is communicated with an air inlet of an engine, the air inlet branch is communicated with the air inlet pipeline through the first regulating valve, the humidity sensor is arranged at the air inlet of the engine, and the controller is connected with the first regulating valve and the humidity sensor;
the humidity sensor is used for acquiring the current humidity of an air inlet of the engine and sending the current humidity to the controller;
the controller is used for determining the current working condition according to the running parameters of the vehicle, determining the corresponding preset humidity according to the current working condition, and sending a corresponding first valve position control signal to the first regulating valve according to the current humidity and the preset humidity when the current humidity is greater than the preset humidity;
the first regulating valve is used for regulating the valve position to the corresponding valve position when the first valve position control signal is received, so that the gas in the gas inlet pipeline is mixed with the gas in the gas inlet branch, and the mixed gas is transmitted to a gas inlet of the engine, wherein the gas in the gas inlet branch is dehumidifying gas with target humidity.
Optionally, the first regulating valve is further configured to feed back a current valve position value to the controller;
the controller is further configured to determine a corresponding humidity difference value according to the current humidity and the preset humidity when the current humidity is greater than the preset humidity, look up a corresponding target valve position value through a first calibration table according to the humidity difference value, and send a corresponding first valve position control signal to the first regulating valve according to the target valve position value when the sum of the current valve position value and the target valve position value is less than or equal to a maximum valve position value corresponding to the first regulating valve.
Optionally, the engine intake control system further includes a dehumidifier, the dehumidifier is disposed in the intake branch and connected to the controller;
the controller is further configured to send a corresponding dehumidification control signal to the dehumidifier when the sum of the current valve position value and the target valve position value is greater than the maximum valve position value corresponding to the first regulating valve;
and the dehumidifier is used for dehumidifying the gas in the air inlet branch when receiving the dehumidification control signal so as to reduce the target humidity of the gas in the air inlet branch.
Optionally, the engine air intake control system further comprises a temperature sensor;
the temperature sensor is arranged at an air inlet of the engine, and the controller is connected with the temperature sensor;
the temperature sensor is used for acquiring the current temperature of an air inlet of the engine and sending the current temperature to the controller;
the controller is further used for determining a corresponding preset temperature according to the current working condition, and sending a corresponding second valve position control signal to the first regulating valve according to the current temperature and the preset temperature when the current temperature is higher than the preset temperature;
and the first regulating valve is used for regulating the valve position to a corresponding valve position when receiving the second valve position control signal so as to mix the gas in the gas inlet pipeline and the gas in the gas inlet branch and transmit the mixed gas to a gas inlet of the engine, wherein the gas in the gas inlet branch is cooling gas at a target temperature.
Optionally, the first regulating valve is further configured to feed back a current valve position value to the controller;
the controller is further configured to determine a corresponding temperature difference according to the current temperature and the preset temperature when the current temperature is greater than the preset temperature, look up a corresponding expected valve position value through a second calibration table according to the temperature difference, and send a corresponding second valve position control signal to the first regulating valve according to the expected valve position value when the sum of the current valve position and the expected valve position value is less than or equal to a maximum valve position value corresponding to the first regulating valve.
Optionally, the engine intake control system further comprises a cooler, wherein the cooler is arranged in the intake branch and connected with the controller;
the controller is further configured to send a corresponding cooling control signal to the cooler when the sum of the current valve position value and the expected valve position value is greater than the maximum valve position value corresponding to the first regulating valve;
and the cooler is used for cooling the gas in the gas inlet branch when the cooling control signal is received so as to reduce the target temperature of the gas in the gas inlet branch.
Optionally, the engine intake control system further comprises a pressure sensor and a second regulating valve, the pressure sensor is arranged at an air inlet of the engine, and the air inlet pipeline is communicated with the air inlet of the engine through the second regulating valve;
the pressure sensor is used for acquiring a current pressure value of an air inlet of the engine and sending the current pressure value to the controller;
the controller is further configured to determine a corresponding preset pressure value according to the current working condition, and send a pressure adjustment control signal to the second regulating valve when the current pressure value is not matched with the preset pressure value;
and the second regulating valve is used for regulating to a corresponding position according to the pressure regulating control signal when receiving the pressure regulating control signal.
Optionally, the controller is further configured to determine a pressure difference value according to the current pressure value and the preset pressure value when the current pressure value is not matched with the preset pressure value, look up a corresponding valve position adjustment parameter through a third calibration table according to the pressure difference value, and send a pressure adjustment control signal to the second regulating valve according to the valve position adjustment parameter.
Further, to achieve the above object, the present invention also proposes an engine intake control method applied to the engine intake control system as described above, the engine intake control system comprising: the air inlet pipeline, the air inlet branch, the first regulating valve, the humidity sensor and the controller are arranged on the air inlet pipeline;
the air inlet pipeline is communicated with an air inlet of an engine, the air inlet branch is communicated with the air inlet pipeline through the first regulating valve, the humidity sensor is arranged at the air inlet of the engine, and the controller is connected with the first regulating valve and the humidity sensor;
the engine intake control method includes:
the humidity sensor acquires the current humidity of an air inlet of the engine and sends the current humidity to the controller;
the controller determines a current working condition according to the running parameters of the vehicle, determines corresponding preset humidity according to the current working condition, and sends a corresponding first valve position control signal to the first regulating valve according to the current humidity and the preset humidity when the current humidity is greater than the preset humidity;
when the first regulating valve receives the first valve position control signal, the valve position is regulated to the corresponding valve position, so that the gas in the gas inlet pipeline is mixed with the gas in the gas inlet branch, and the mixed gas is transmitted to a gas inlet of the engine, wherein the gas in the gas inlet branch is the dehumidifying gas with target humidity.
Optionally, when the current humidity is greater than the preset humidity, the controller sends a corresponding first valve position control signal to the first adjusting valve according to the current humidity and the preset humidity, including:
the first regulating valve feeds back a current valve value to the controller;
when the current humidity is higher than the preset humidity, the controller determines a corresponding humidity difference value according to the current humidity and the preset humidity, searches a corresponding target valve position value through a first calibration table according to the humidity difference value, and sends a corresponding first valve position control signal to the first regulating valve according to the target valve position value when the sum of the current valve position value and the target valve position value is smaller than or equal to a maximum valve position value corresponding to the first regulating valve.
The engine air inlet control system comprises an air inlet pipeline communicated with an air inlet of an engine, a first regulating valve, an air inlet branch communicated with the air inlet pipeline through the first regulating valve, a humidity sensor arranged at the air inlet of the engine and a controller connected with the first regulating valve and the humidity sensor; the method comprises the following steps that a humidity sensor acquires the current humidity of an air inlet of an engine and sends the current humidity to a controller; the controller determines the current working condition according to the running parameters of the vehicle, determines the corresponding preset humidity according to the current working condition, and sends a corresponding first valve position control signal to the first regulating valve according to the current humidity and the preset humidity when the current humidity is greater than the preset humidity; when the first regulating valve receives a first valve position control signal, the valve position is regulated to a corresponding valve position, so that gas in the gas inlet pipeline is mixed with gas in the gas inlet branch, the mixed gas is transmitted to a gas inlet of the engine, and the gas in the gas inlet branch is dehumidifying gas with target humidity. In this way, acquire the current humidity of engine air inlet through humidity transducer, confirm to predetermine humidity according to current operating mode, when the humidity of the air inlet of engine can not satisfy the requirement of current operating mode, adjust the valve position of first governing valve, control gets into the gaseous flow of dehumidification in the air inlet pipeline, make the humidity of the gas after the mixture accord with current operating mode, the mist that will satisfy the requirement transmits to the air inlet of engine, the actual humidity of admitting air of engine has been monitored and controlled, the problem that the too high humidity that leads to the combustion rate to reduce of the air that has avoided getting into the engine, the work efficiency of engine has been improved.
Drawings
FIG. 1 is a block diagram of an engine air intake control system according to a first embodiment of the present invention;
FIG. 2 is a block diagram of a second embodiment of an engine air intake control system according to the present invention;
fig. 3 is a flowchart illustrating the engine intake control method according to the first embodiment of the present invention.
The reference numbers illustrate:
reference numerals Name (R) Reference numerals Name (R)
10 Air inlet pipeline 70 Moisture eliminator
20 Air inlet branch 80 Temperature sensor
30 First regulating valve 90 Temperature lowering device
40 Humidity sensor 100 Pressure sensor
50 Controller 110 Second regulating valve
60 Air intake of engine
The implementation, functional features and advantages of the present invention will be further described with reference to the accompanying drawings.
Detailed Description
It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Referring to fig. 1, fig. 1 is a block diagram showing the configuration of a first embodiment of an intake control system for an engine according to the present invention.
In this embodiment, the engine intake control system includes: the air inlet pipeline 10, the air inlet branch 20, the first regulating valve 30, the humidity sensor 40 and the controller 50;
the air inlet pipeline 10 is communicated with an air inlet 60 of an engine, the air inlet branch 20 is communicated with the air inlet pipeline 10 through the first regulating valve 30, the humidity sensor 40 is arranged at the air inlet 60 of the engine, and the controller 50 is connected with the first regulating valve 30 and the humidity sensor 40. In this embodiment, the state of the first regulating valve 30 includes an open state and a plurality of valve positions, and the initial state is a closed state, and is adjusted to a corresponding valve position when receiving the control signal of the controller 50.
The humidity sensor 40 is configured to acquire a current humidity of the air intake 60 of the engine, and send the current humidity to the controller 50. In this embodiment, the humidity sensor 40 is installed in the air inlet 60 of the engine, acquire the humidity information of the air inlet 60 of the engine in real time, and send the humidity information to the controller 50, the humidity sensor 40 collects the humidity information under the control of the controller 50, the specific process can be that the controller 50 sends a detection signal to the humidity sensor 40 when receiving an engine start instruction, the humidity sensor 40 collects the humidity information according to the detection signal, the controller 50 sends a detection signal to the humidity sensor 40 again when detecting that the current working condition changes, so that the humidity sensor 40 collects the humidity information again according to the detection signal. In addition, in a specific implementation, the detection signal sent by the controller 50 may include a collection frequency, and the humidity sensor 40 collects humidity information based on the collection frequency.
The controller 50 is configured to determine a current working condition according to an operation parameter of the vehicle, determine a corresponding preset humidity according to the current working condition, and send a corresponding first valve position control signal to the first adjusting valve 30 according to the current humidity and the preset humidity when the current humidity is greater than the preset humidity. In this embodiment, the controller 50 may be a vehicle-mounted computer, or may be another controller 50 in communication connection with the vehicle-mounted computer, in this embodiment, the other controller 50 in communication connection with the vehicle-mounted computer is taken as an example to explain, the controller 50 is connected with the vehicle-mounted computer, so as to obtain a vehicle operation parameter detected by a sensor on a vehicle through a CAN bus of the vehicle-mounted computer, determine a current working condition based on the vehicle operation parameter, the controller 50 is connected with a preset memory, and is configured to obtain mapping table information pre-stored in the preset memory, in a specific implementation, the preset memory stores a mapping table between a working condition and humidity, and the controller 50 queries the mapping table between the working condition and humidity according to the current working condition, thereby determining a preset humidity corresponding to the current working condition.
Specifically, the first regulating valve 30 is also used for feeding back the current valve position value to the controller 50. In this embodiment, the regulating valve includes a plurality of valve positions, for example, the regulating valve has ten valve positions, and when the current valve position is 0, the regulating valve is characterized as being in the closed state, and when the current valve position is 9, the regulating valve is characterized as being in the fully open state.
The controller 50 is further configured to determine a corresponding humidity difference according to the current humidity and the preset humidity when the current humidity is greater than the preset humidity, look up a corresponding target valve position value through a first calibration table according to the humidity difference, and send a corresponding first valve position control signal to the first adjusting valve 30 according to the target valve position value when a sum of the current valve position value and the target valve position value is less than or equal to a maximum valve position value corresponding to the first adjusting valve 30. In this embodiment, in order to ensure that the humidity of the mixed gas meets the current working condition, the humidity difference and the valve position of the first adjusting valve 30 are calibrated in advance, a first calibration table is provided, the first calibration table includes the humidity difference and the corresponding valve position, when the current humidity is greater than the preset humidity, the controller 50 takes the difference between the current humidity and the preset humidity as the humidity difference, and determines the valve position of the first adjusting valve 30, i.e., the target valve position value, from the first calibration table according to the humidity difference.
It can be understood that, when the sum of the current and target valve position values is less than or equal to the maximum valve position value corresponding to the first regulating valve 30, the characteristic that the valve position of the first regulating valve 30 can meet the requirement of the current operating condition is satisfied, for example, the first regulating valve 30 feeds back the current valve position value as 2, the controller 50 finds that the target valve position value is 3 through the first calibration table, the maximum valve position value of the first regulating valve 30 is 9, and the sum of the current and target valve position values is less than or equal to the maximum valve position value corresponding to the first regulating valve 30. When the sum of the current valve position value and the target valve position value is greater than the maximum valve position value corresponding to the first regulating valve 30, the representation that the valve position of the first regulating valve 30 is regulated is not enough to meet the requirement of the current working condition, and the dehumidifier 70 is arranged in the embodiment to dehumidify the gas in the air inlet branch 20, so that the humidity of the mixed gas is further reduced.
The first adjusting valve 30 is configured to adjust the valve position to a corresponding valve position when receiving the first valve position control signal, so that the gas in the intake pipeline 10 is mixed with the gas in the intake branch 20, and the mixed gas is transmitted to the intake port 60 of the engine, where the gas in the intake branch 20 is a dehumidified gas with a target humidity. In this embodiment, the air in the air intake branch 20 is dehumidified air with preset humidity as target humidity, and the target humidity is determined by calibration. The target humidity is smaller than the preset humidity corresponding to any working condition.
It should be noted that the first regulating valve 30 receives the first valve position control signal, determines a target valve position value to be regulated according to the first valve position control signal, and regulates the valve position to the corresponding valve position according to the target valve position value.
Further, the engine intake control system further includes a dehumidifier 70, and the dehumidifier 70 is disposed in the intake branch 20 and connected to the controller 50;
the controller 50 is further configured to send a corresponding dehumidification control signal to the dehumidifier 70 when the sum of the current valve position value and the target valve position value is greater than the maximum valve position value corresponding to the first regulating valve 30. In this embodiment, the initial state of the dehumidifier 70 is an open state, and the specific process is as follows: when receiving an engine start instruction, the controller 50 sends a start signal to the dehumidifier 70, and the dehumidifier 70 performs a default dehumidification operation according to the start signal to dehumidify the gas in the inlet branch 20, so that the humidity of the gas in the inlet branch 20 is maintained at a target humidity. When the sum of the current valve position and the target valve position is greater than the maximum valve position corresponding to the first control valve 30, the controller 50 sends a dehumidification control signal to the dehumidifier 70, so that the dehumidifier 70 increases the dehumidification strength.
The dehumidifier 70 is configured to dehumidify the gas in the air intake branch 20 when receiving the dehumidification control signal, so as to reduce the target humidity of the gas in the air intake branch 20. In this embodiment, the dehumidifier 70 reduces the humidity of the air in the air intake branch 20 under the control of the dehumidification control signal, so that after the air in the air intake branch 20 is mixed with the air in the air intake pipeline 10, the humidity of the mixed air is further reduced to meet the requirement of the current working condition. The embodiment provides an engine air inlet control system for reducing air inlet humidity aiming at the problem that combustion speed is reduced due to overhigh air inlet humidity.
The engine air inlet control system of the embodiment comprises an air inlet pipeline 10 communicated with an air inlet 60 of an engine, a first regulating valve 30, an air inlet branch 20 communicated with the air inlet pipeline 10 through the first regulating valve 30, a humidity sensor 40 arranged at the air inlet 60 of the engine, and a controller 50 connected with the first regulating valve 30 and the humidity sensor 40; the humidity sensor 40 acquires the current humidity of the air inlet 60 of the engine and sends the current humidity to the controller 50; the controller 50 determines a current working condition according to the operating parameters of the vehicle, determines a corresponding preset humidity according to the current working condition, and sends a corresponding first valve position control signal to the first adjusting valve 30 according to the current humidity and the preset humidity when the current humidity is greater than the preset humidity; when receiving the first valve position control signal, the first regulating valve 30 regulates the valve position to a corresponding valve position, so that the gas in the intake pipeline 10 is mixed with the gas in the intake branch 20, and the mixed gas is transmitted to the intake port 60 of the engine, wherein the gas in the intake branch 20 is the dehumidified gas with the target humidity. In this way, acquire the current humidity of engine air inlet through humidity transducer 40, confirm preset humidity according to current operating mode, when the humidity of the air inlet 60 of engine does not satisfy the requirement of current operating mode, adjust the valve position of first governing valve 30, the control gets into the gaseous flow of dehumidification in the inlet line 10, make the gaseous humidity after the mixture accord with current operating mode, the gaseous mixture that will satisfy the requirement transmits to the air inlet 60 of engine, the actual inlet air humidity of engine has been monitored and controlled, the problem that the humidity of the air of having avoided getting into the engine leads to the combustion speed to reduce is too high, the work efficiency of engine has been improved.
Referring to fig. 2, fig. 2 is a block diagram showing the structure of a second embodiment of the intake control system of the engine according to the present invention.
Based on the first embodiment described above, the engine intake control system of the present embodiment further includes a temperature sensor 80;
the temperature sensor 80 is arranged at the air inlet 60 of the engine, and the controller 50 is connected with the temperature sensor 80;
the temperature sensor 80 is configured to acquire a current temperature of the air intake 60 of the engine, and send the current temperature to the controller 50. In this embodiment, the temperature sensor 80 is installed in the air inlet 60 of the engine, acquire the temperature information of the air inlet 60 of the engine in real time, and send the temperature information to the controller 50, the temperature sensor 80 collects the temperature information under the control of the controller 50, a specific process may be that the controller 50 sends a detection signal to the temperature sensor 80 when receiving an engine start instruction, the temperature sensor 80 collects the temperature information according to the detection signal, and the controller 50 sends a detection signal to the temperature sensor 80 again when detecting that the current working condition changes, so that the temperature sensor 80 collects the temperature information again according to the detection signal. In addition, in a specific implementation, the detection signal sent by the controller 50 may include a collection frequency, and the temperature sensor 80 collects temperature information based on the collection frequency.
The controller 50 is further configured to determine a corresponding preset temperature according to the current working condition, and send a corresponding second valve position control signal to the first regulating valve 30 according to the current temperature and the preset temperature when the current temperature is greater than the preset temperature. In this embodiment, the controller 50 is connected to the vehicle-mounted computer to obtain vehicle operating parameters detected by a sensor on the vehicle through a CAN bus of the vehicle-mounted computer, and determine a current working condition based on the vehicle operating parameters, and the controller 50 is connected to the preset memory to obtain mapping table information pre-stored in the preset memory.
Specifically, the first regulating valve 30 is further configured to feed back a current valve position value to the controller 50;
the controller 50 is further configured to determine a corresponding temperature difference according to the current temperature and the preset temperature when the current temperature is greater than the preset temperature, look up a corresponding expected valve position value through a second calibration table according to the temperature difference, and send a corresponding second valve position control signal to the first regulating valve 30 according to the expected valve position value when the sum of the current valve position value and the expected valve position value is less than or equal to a maximum valve position value corresponding to the first regulating valve 30. In this embodiment, in order to ensure that the temperature of the mixed gas meets the current working condition, the temperature difference value and the valve position of the first regulating valve 30 are calibrated in advance, a second calibration table is provided, the second calibration table includes the temperature difference value and the corresponding valve position, when the current temperature is higher than the preset temperature, the controller 50 takes the difference between the current temperature and the preset temperature as the temperature difference value, and the valve position of the first regulating valve 30, that is, the expected valve position value, is determined from the second calibration table according to the temperature difference value.
It can be understood that, when the sum of the current value and the expected value is less than or equal to the maximum value corresponding to the first regulating valve 30, the representation of adjusting the valve position of the first regulating valve 30 can meet the requirement of the current operating condition, and when the sum of the current value and the expected value is greater than the maximum value corresponding to the first regulating valve 30, the representation of adjusting the valve position of the first regulating valve 30 is not enough to meet the requirement of the current operating condition, in this embodiment, the temperature reducer 90 is provided to reduce the temperature of the gas in the intake branch 20, so as to further reduce the temperature of the mixed gas.
In a specific implementation, the controller 50 has two control modes, the first mode is that the controller 50 controls the first regulating valve 30 in real time, adjusts the control valve according to a target valve position value corresponding to a humidity difference value when current humidity is obtained, and adjusts the control valve according to an expected valve position value corresponding to a temperature difference value when current temperature is obtained; the second way is that the controller 50 searches the target valve value in the first calibration table according to the humidity difference value and searches the expected valve value in the second calibration table according to the temperature difference value, because the humidity adjustment and the temperature condition are both required, the controller 50 determines the final valve value according to the expected valve value and the target valve value, and sends the corresponding second valve control signal to the first adjusting valve 30 according to the final valve value, wherein the final valve value is the larger valve value between the expected valve value and the target valve value.
The first adjusting valve 30 is configured to adjust the valve position to a corresponding valve position when receiving the second valve position control signal, so that the gas in the intake pipeline 10 is mixed with the gas in the intake branch 20, and the mixed gas is transmitted to the intake port 60 of the engine, where the gas in the intake branch 20 is a temperature-reduced gas at a target temperature. In this embodiment, the gas in the intake branch 20 is a temperature-reduced gas with a preset temperature as a target temperature, and the target temperature is determined by calibration. The target temperature is less than the preset temperature corresponding to any working condition.
It should be noted that the first regulating valve 30 receives the second valve position control signal, determines the valve position value to be regulated according to the second valve position control signal, and regulates the valve position to the corresponding valve position according to the valve position value to be regulated.
Further, the engine intake control system further comprises a cooler 90, wherein the cooler 90 is arranged in the intake branch 20 and connected with the controller 50;
the controller 50 is further configured to send a corresponding cooling control signal to the cooler 90 when the sum of the current valve position and the expected valve position is greater than the maximum valve position corresponding to the first adjusting valve 30. In this embodiment, the initial state of the cooler 90 is an open state, and the specific process is as follows: when receiving an engine start instruction, the controller 50 sends a start signal to the temperature reducer 90, and the temperature reducer 90 performs a default temperature reduction operation according to the start signal to reduce the temperature of the gas in the gas inlet branch 20, so that the temperature of the gas in the gas inlet branch 20 is maintained at a target temperature. When the sum of the current valve position and the expected valve position is greater than the maximum valve position corresponding to the first regulating valve 30, the controller 50 sends a cooling control signal to the cooler 90, so that the cooler 90 increases the cooling force.
The temperature reducer 90 is configured to, when receiving the temperature reduction control signal, reduce the temperature of the gas in the gas inlet branch 20, so as to reduce the target temperature of the gas in the gas inlet branch 20. In this embodiment, the temperature reducer 90 reduces the temperature of the gas in the gas inlet branch 20 under the control of the temperature reduction control signal, so that the temperature of the mixed gas is further reduced after the gas in the gas inlet branch 20 is mixed with the gas in the gas inlet pipeline 10, and the requirement of the current working condition is met. The embodiment provides an engine air inlet control system for reducing the air inlet temperature aiming at the condition that the air inlet temperature is too high to cause incomplete combustion.
Further, in order to monitor and control the pressure at the intake of the engine, the engine intake control system further comprises a pressure sensor 100 and a second regulating valve 110, wherein the pressure sensor 100 is disposed at the intake 60 of the engine, and the intake pipeline 10 is communicated with the intake 60 of the engine through the second regulating valve 110;
the pressure sensor 100 is configured to acquire a current pressure value of the air inlet 60 of the engine, and send the current pressure value to the controller 50. In this embodiment, the pressure sensor 100 is installed at the air inlet 60 of the engine, the pressure information of the air inlet 60 of the engine is acquired in real time, and the pressure information is sent to the controller 50, the pressure sensor 100 collects the pressure information under the control of the controller 50, a specific process may be that the controller 50 sends a detection signal to the pressure sensor 100 when receiving an engine start instruction, the pressure sensor 100 collects the pressure information according to the detection signal, and the controller 50 sends the detection signal to the pressure sensor 100 again when detecting that the current working condition changes, so that the pressure sensor 100 collects the pressure information again according to the detection signal. In addition, in a specific implementation, the detection signal sent by the controller 50 may include a collection frequency, and the pressure sensor 100 collects pressure information based on the collection frequency.
The controller 50 is further configured to determine a corresponding preset pressure value according to the current working condition, and send a pressure adjustment control signal to the second adjusting valve 110 when the current pressure value is not matched with the preset pressure value. In this embodiment, the preset memory stores a mapping table between the operating conditions and the pressure values, and the controller 50 queries the mapping table between the operating conditions and the pressure values in the preset memory according to the current operating conditions, so as to determine the preset pressure value corresponding to the current operating conditions.
The controller 50 is further configured to determine a pressure difference value according to the current pressure value and the preset pressure value when the current pressure value is not matched with the preset pressure value, look up a corresponding valve position adjustment parameter through a third calibration table according to the pressure difference value, and send a pressure adjustment control signal to the second adjustment valve 110 according to the valve position adjustment parameter. In this embodiment, the second regulating valve 110 includes a plurality of valve positions, and the initial state may be an open state, and since the current operating condition may be an operating condition when the engine is started or an operating condition when the vehicle is accelerated, the initial state of the second regulating valve 110 may also be a valve position corresponding to the previous operating condition.
It should be noted that the controller 50 determines a pressure difference value according to the current pressure value and the preset pressure value, if the current pressure value is greater than the preset pressure value, it is determined that the intake pressure needs to be reduced, the second regulating valve 110 is controlled to decrease the pipe area to reduce the intake pressure, if the current pressure value is less than the preset pressure value, it is determined that the intake pressure needs to be raised, the second regulating valve 110 is controlled to increase the pipe area, if the second regulating valve 110 has been regulated to the maximum, the second regulating valve 110 feeds back the current state to the controller 50, so that the controller 50 obtains the current valve position value of the first regulating valve 30, and when the current valve position value is less than the maximum valve position value corresponding to the first regulating valve 30, the first regulating valve 30 is controlled to increase one valve position to raise the intake pressure.
It should be understood that the pressure difference may be a positive value or a negative value, and the position adjustment parameter is the desired position value of the second adjustment valve 110, such as 2 positions are desired to be adjusted larger and 2 positions are desired to be adjusted smaller. In a specific implementation, the intake pressure difference value and the expected valve position value of the second regulating valve 110 are calibrated in advance, a third calibration table is set, the third calibration table includes the intake pressure difference value and the corresponding expected valve position value, the intake pressure difference value is determined according to the current pressure value and the preset pressure value, and the expected valve position value, that is, the valve position adjusting parameter, is determined from the third calibration table.
And the second regulating valve 110 is configured to regulate to a corresponding position according to the pressure regulation control signal when receiving the pressure regulation control signal. In this embodiment, the second regulating valve 110 determines a valve position parameter to be adjusted according to the pressure regulating control signal, and adjusts the valve position parameter to a corresponding position according to the valve position parameter.
The engine air intake control system of the present embodiment further includes a temperature sensor 80, the temperature sensor 80 is disposed at the air inlet 60 of the engine, and the controller 50 is connected to the temperature sensor 80; the temperature sensor 80 acquires the current temperature of the air intake 60 of the engine, and sends the current temperature to the controller 50; the controller 50 determines a corresponding preset temperature according to the current working condition, and when the current temperature is higher than the preset temperature, sends a corresponding second valve position control signal to the first regulating valve 30 according to the current temperature and the preset temperature; when receiving the second valve position control signal, the first regulating valve 30 increases the valve position to the corresponding valve position, so that the gas in the intake pipeline 10 is mixed with the gas in the intake branch 20, and the mixed gas is transmitted to the intake port 60 of the engine, wherein the gas in the intake branch 20 is a temperature-reduced gas at a target temperature. In the above manner, while the current humidity of the engine intake port is acquired by the humidity sensor 40, the current temperature of the engine intake port is acquired by the temperature sensor 80, the preset humidity and the preset temperature are determined according to the current working condition, when the humidity and the temperature of the air inlet 60 of the engine do not meet the requirements of the current working condition, the valve position of the first regulating valve 30 is adjusted, the flow of cooling gas entering the air inlet pipeline 10 is controlled, the humidity and the temperature of mixed gas are enabled to accord with the current working condition, the mixed gas meeting the requirements is transmitted to the air inlet 60 of the engine, the actual air inlet humidity and the air inlet temperature of the engine are monitored and controlled, the problem that the combustion speed is reduced due to overhigh humidity of the air entering the engine is avoided, the problem that incomplete combustion is caused due to overhigh air inlet temperature is also avoided, and the working efficiency of the engine is improved.
Referring to fig. 3, fig. 3 is a schematic flow chart of the engine intake control method according to the first embodiment of the present invention.
As shown in fig. 3, the engine intake control method according to the embodiment of the present invention is applied to the engine intake control system described above, which includes: the air inlet pipeline, the air inlet branch, the first regulating valve, the humidity sensor and the controller are arranged on the air inlet pipeline;
the air inlet pipeline is communicated with an air inlet of an engine, the air inlet branch is communicated with the air inlet pipeline through the first regulating valve, the humidity sensor is arranged at the air inlet of the engine, and the controller is connected with the first regulating valve and the humidity sensor;
the engine intake control method includes:
step S10: the humidity sensor acquires the current humidity of an air inlet of the engine and sends the current humidity to the controller.
Step S20: the controller determines the current working condition according to the running parameters of the vehicle, determines the corresponding preset humidity according to the current working condition, and sends a corresponding first valve position control signal to the first regulating valve according to the current humidity and the preset humidity when the current humidity is greater than the preset humidity.
Step S30: when the first regulating valve receives the first valve position control signal, the valve position is regulated to the corresponding valve position, so that the gas in the gas inlet pipeline is mixed with the gas in the gas inlet branch, and the mixed gas is transmitted to a gas inlet of the engine, wherein the gas in the gas inlet branch is dehumidifying gas with target humidity.
Specifically, when the current humidity is greater than the preset humidity, the controller sends a corresponding first valve position control signal to the first adjusting valve according to the current humidity and the preset humidity, and the method includes: the first regulating valve feeds back a current valve value to the controller; when the current humidity is higher than the preset humidity, the controller determines a corresponding humidity difference value according to the current humidity and the preset humidity, searches a corresponding target valve position value through a first calibration table according to the humidity difference value, and sends a corresponding first valve position control signal to the first regulating valve according to the target valve position value when the sum of the current valve position value and the target valve position value is smaller than or equal to a maximum valve position value corresponding to the first regulating valve.
It should be understood that the above is only an example, and the technical solution of the present invention is not limited in any way, and in a specific application, a person skilled in the art may set the technical solution as needed, and the present invention is not limited thereto.
The engine air inlet control system of the embodiment comprises an air inlet pipeline communicated with an air inlet of an engine, a first regulating valve, an air inlet branch communicated with the air inlet pipeline through the first regulating valve, a humidity sensor arranged at the air inlet of the engine and a controller connected with the first regulating valve and the humidity sensor; the method comprises the steps that a humidity sensor obtains the current humidity of an air inlet of an engine and sends the current humidity to a controller; the controller determines the current working condition according to the running parameters of the vehicle, determines the corresponding preset humidity according to the current working condition, and sends a corresponding first valve position control signal to the first regulating valve according to the current humidity and the preset humidity when the current humidity is greater than the preset humidity; when the first regulating valve receives a first valve position control signal, the valve position is regulated to a corresponding valve position, so that gas in the gas inlet pipeline is mixed with gas in the gas inlet branch, the mixed gas is transmitted to a gas inlet of the engine, and the gas in the gas inlet branch is dehumidifying gas with target humidity. In this way, acquire the current humidity of engine air inlet through humidity transducer, confirm preset humidity according to current operating mode, when the humidity of the air inlet of engine does not satisfy the requirement of current operating mode, adjust the valve position of first governing valve, the control gets into the gaseous flow of dehumidification in the inlet line, make the humidity of the gaseous after mixing accord with current operating mode, the gaseous mixture that will satisfy the requirement transmits the air inlet to the engine, the actual humidity of admitting air of engine has been monitored and controlled, the problem that the humidity of the air of having avoided getting into the engine leads to the combustion speed to reduce is too high, the work efficiency of engine has been improved.
It should be noted that the above-mentioned work flows are only illustrative and do not limit the scope of the present invention, and in practical applications, those skilled in the art may select some or all of them according to actual needs to implement the purpose of the solution of the present embodiment, and the present invention is not limited herein.
In addition, technical details that are not elaborated in the present embodiment may be referred to an engine intake control system provided in any embodiment of the present invention, and are not described herein again.
In one embodiment, the engine intake control system further comprises a dehumidifier, the dehumidifier is arranged in the intake branch and is connected with the controller;
when the current humidity is greater than the preset humidity, the controller determines a corresponding humidity difference value according to the current humidity and the preset humidity, and after searching a corresponding target valve value through a first calibration table according to the humidity difference value, the method further comprises:
when the sum of the current valve position value and the target valve position value is larger than the maximum valve position value corresponding to the first regulating valve, the controller sends a corresponding dehumidification control signal to the dehumidifier;
and when the dehumidifier receives the dehumidification control signal, dehumidifying the air in the air inlet branch so as to reduce the target humidity of the air in the air inlet branch.
In one embodiment, the engine air intake control system further comprises a temperature sensor;
the temperature sensor is arranged at an air inlet of the engine, and the controller is connected with the temperature sensor;
the method further comprises the following steps:
the temperature sensor acquires the current temperature of an air inlet of the engine and sends the current temperature to the controller;
the controller determines a corresponding preset temperature according to the current working condition, and sends a corresponding second valve position control signal to the first regulating valve according to the current temperature and the preset temperature when the current temperature is higher than the preset temperature;
when the first regulating valve receives the second valve position control signal, the valve position is regulated to the corresponding valve position, so that the gas in the gas inlet pipeline is mixed with the gas in the gas inlet branch, and the mixed gas is transmitted to a gas inlet of the engine, wherein the gas in the gas inlet branch is cooling gas at a target temperature.
In an embodiment, when the current temperature is higher than the preset temperature, the controller sends a corresponding second valve position control signal to the first regulating valve according to the current temperature and the preset temperature, including:
the first regulating valve feeds back a current valve position value to the controller;
when the current temperature is higher than the preset temperature, the controller determines a corresponding temperature difference value according to the current temperature and the preset temperature, looks up a corresponding expected valve position value through a second calibration table according to the temperature difference value, and sends a corresponding second valve position control signal to the first regulating valve according to the expected valve position value when the sum of the current valve position value and the expected valve position value is smaller than or equal to the maximum valve position value corresponding to the first regulating valve.
In one embodiment, the engine intake control system further comprises a cooler, wherein the cooler is arranged in the intake branch and connected with the controller;
when the current temperature is higher than the preset temperature, the controller determines a corresponding temperature difference value according to the current temperature and the preset temperature, and after looking up a corresponding expected valve value through a second calibration table according to the temperature difference value, the method further comprises:
when the sum of the current valve position value and the expected valve position value is larger than the maximum valve position value corresponding to the first regulating valve, the controller sends a corresponding cooling control signal to the cooler;
the cooler is receiving when cooling control signal, it is right gaseous cooling in the branch road admits air, in order to reduce gaseous in the branch road admits air the target temperature.
In one embodiment, the engine intake control system further comprises a pressure sensor and a second regulating valve, the pressure sensor is arranged at the air inlet of the engine, and the air inlet pipeline is communicated with the air inlet of the engine through the second regulating valve;
the method further comprises the following steps:
the pressure sensor acquires a current pressure value of an air inlet of the engine and sends the current pressure value to the controller;
the controller determines a corresponding preset pressure value according to the current working condition, and sends a pressure regulation control signal to the second regulating valve when the current pressure value is not matched with the preset pressure value;
and when receiving the pressure adjusting control signal, the second adjusting valve adjusts to a corresponding position according to the pressure adjusting control signal.
In one embodiment, when the current pressure value does not match the preset pressure value, the controller sends a pressure regulation control signal to the second regulating valve, including:
and when the current pressure value is not matched with the preset pressure value, the controller determines a pressure difference value according to the current pressure value and the preset pressure value, searches for a corresponding valve position adjusting parameter through a third calibration table according to the pressure difference value, and sends a pressure adjusting control signal to the second adjusting valve according to the valve position adjusting parameter.
Furthermore, it should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or system that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or system. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in the process, method, article, or system in which the element is included.
The above-mentioned serial numbers of the embodiments of the present invention are merely for description and do not represent the merits of the embodiments.
Through the above description of the embodiments, those skilled in the art will clearly understand that the method of the above embodiments can be implemented by software plus a necessary general hardware platform, and certainly can also be implemented by hardware, but in many cases, the former is a better implementation manner. Based on such understanding, the technical solution of the present invention or portions thereof that contribute to the prior art may be embodied in the form of a software product, where the computer software product is stored in a storage medium (e.g. Read Only Memory (ROM)/RAM, magnetic disk, optical disk), and includes several instructions for enabling a terminal device (e.g. a mobile phone, a computer, a server, or a network device) to execute the method according to the embodiments of the present invention.
The above description is only a preferred embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes, which are made by using the contents of the present specification and the accompanying drawings, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.

Claims (10)

1. An engine air intake control system, characterized by comprising: the air inlet pipeline, the air inlet branch, the first regulating valve, the humidity sensor and the controller are arranged on the air inlet pipeline;
the air inlet pipeline is communicated with an air inlet of an engine, the air inlet branch is communicated with the air inlet pipeline through the first regulating valve, the humidity sensor is arranged at the air inlet of the engine, and the controller is connected with the first regulating valve and the humidity sensor;
the humidity sensor is used for acquiring the current humidity of an air inlet of the engine and sending the current humidity to the controller;
the controller is used for determining the current working condition according to the running parameters of the vehicle, determining the corresponding preset humidity according to the current working condition, and sending a corresponding first valve position control signal to the first regulating valve according to the current humidity and the preset humidity when the current humidity is greater than the preset humidity;
the first regulating valve is used for regulating the valve position to the corresponding valve position when receiving the first valve position control signal, so that the gas in the gas inlet pipeline is mixed with the gas in the gas inlet branch, and the mixed gas is transmitted to a gas inlet of the engine, wherein the gas in the gas inlet branch is dehumidifying gas with target humidity.
2. The engine air intake control system of claim 1, wherein the first regulator valve is further configured to feedback a current valve position value to the controller;
the controller is further configured to determine a corresponding humidity difference according to the current humidity and the preset humidity when the current humidity is greater than the preset humidity, search a corresponding target valve position value through a first calibration table according to the humidity difference, and send a corresponding first valve position control signal to the first regulating valve according to the target valve position value when the sum of the current valve position and the target valve position value is less than or equal to a maximum valve position value corresponding to the first regulating valve.
3. The engine air intake control system of claim 2, further comprising a dehumidifier disposed in the air intake branch and connected to the controller;
the controller is further configured to send a corresponding dehumidification control signal to the dehumidifier when the sum of the current valve position value and the target valve position value is greater than the maximum valve position value corresponding to the first regulating valve;
and the dehumidifier is used for dehumidifying the gas in the air inlet branch when receiving the dehumidification control signal so as to reduce the target humidity of the gas in the air inlet branch.
4. The engine air intake control system of claim 1, further comprising a temperature sensor;
the temperature sensor is arranged at an air inlet of the engine, and the controller is connected with the temperature sensor;
the temperature sensor is used for acquiring the current temperature of an air inlet of the engine and sending the current temperature to the controller;
the controller is further used for determining a corresponding preset temperature according to the current working condition, and sending a corresponding second valve position control signal to the first regulating valve according to the current temperature and the preset temperature when the current temperature is higher than the preset temperature;
and the first regulating valve is used for regulating the valve position to a corresponding valve position when receiving the second valve position control signal so as to mix the gas in the gas inlet pipeline and the gas in the gas inlet branch and transmit the mixed gas to a gas inlet of the engine, wherein the gas in the gas inlet branch is cooling gas at a target temperature.
5. The engine air intake control system of claim 4, wherein the first regulator valve is further configured to feed back a current valve position value to the controller;
the controller is further configured to determine a corresponding temperature difference according to the current temperature and the preset temperature when the current temperature is greater than the preset temperature, look up a corresponding expected valve position value through a second calibration table according to the temperature difference, and send a corresponding second valve position control signal to the first regulating valve according to the expected valve position value when the sum of the current valve position value and the expected valve position value is less than or equal to a maximum valve position value corresponding to the first regulating valve.
6. The engine induction control system of claim 5, further comprising a desuperheater disposed in the intake branch and coupled to the controller;
the controller is further configured to send a corresponding cooling control signal to the cooler when the sum of the current valve position value and the expected valve position value is greater than the maximum valve position value corresponding to the first regulating valve;
and the cooler is used for cooling the gas in the gas inlet branch when the cooling control signal is received so as to reduce the target temperature of the gas in the gas inlet branch.
7. The engine intake control system according to any one of claims 1 to 6, further comprising a pressure sensor provided at an intake port of the engine, and a second regulator valve through which the intake pipe communicates with the intake port of the engine;
the pressure sensor is used for acquiring a current pressure value of an air inlet of the engine and sending the current pressure value to the controller;
the controller is further configured to determine a corresponding preset pressure value according to the current working condition, and send a pressure adjustment control signal to the second regulating valve when the current pressure value is not matched with the preset pressure value;
and the second regulating valve is used for regulating to a corresponding position according to the pressure regulating control signal when receiving the pressure regulating control signal.
8. The engine intake control system of claim 7, wherein the controller is further configured to determine a pressure difference value according to the current pressure value and the preset pressure value when the current pressure value does not match the preset pressure value, look up a corresponding valve position adjustment parameter through a third calibration table according to the pressure difference value, and send a pressure adjustment control signal to the second regulating valve according to the valve position adjustment parameter.
9. An engine intake control method applied to an engine intake control system according to any one of claims 1 to 8, the engine intake control system comprising: the air inlet pipeline, the air inlet branch, the first regulating valve, the humidity sensor and the controller are arranged on the air inlet pipeline;
the air inlet pipeline is communicated with an air inlet of an engine, the air inlet branch is communicated with the air inlet pipeline through the first regulating valve, the humidity sensor is arranged at the air inlet of the engine, and the controller is connected with the first regulating valve and the humidity sensor;
the engine intake control method includes:
the humidity sensor acquires the current humidity of an air inlet of the engine and sends the current humidity to the controller;
the controller determines a current working condition according to the running parameters of the vehicle, determines corresponding preset humidity according to the current working condition, and sends a corresponding first valve position control signal to the first regulating valve according to the current humidity and the preset humidity when the current humidity is greater than the preset humidity;
when the first regulating valve receives the first valve position control signal, the valve position is regulated to the corresponding valve position, so that the gas in the gas inlet pipeline is mixed with the gas in the gas inlet branch, and the mixed gas is transmitted to a gas inlet of the engine, wherein the gas in the gas inlet branch is dehumidifying gas with target humidity.
10. The engine intake control method of claim 9, wherein the controller sending a corresponding first valve position control signal to the first regulator valve based on the current humidity and the preset humidity when the current humidity is greater than the preset humidity comprises:
the first regulating valve feeds back a current valve value to the controller;
when the current humidity is higher than the preset humidity, the controller determines a corresponding humidity difference value according to the current humidity and the preset humidity, searches a corresponding target valve position value through a first calibration table according to the humidity difference value, and sends a corresponding first valve position control signal to the first regulating valve according to the target valve position value when the sum of the current valve position value and the target valve position value is smaller than or equal to a maximum valve position value corresponding to the first regulating valve.
CN202110605917.4A 2021-05-31 2021-05-31 Engine air intake control system and method Pending CN115126609A (en)

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Application Number Priority Date Filing Date Title
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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006046307A (en) * 2004-08-02 2006-02-16 Satoshi Suganuma Intake air humidifying device for internal combustion engine
CN201961310U (en) * 2011-01-31 2011-09-07 佛山市南海码金投资咨询有限公司 Energy-saving efficient automobile engine output power control device
CN105134432A (en) * 2015-09-28 2015-12-09 苏州市海神达机械科技有限公司 Air intake system for engine
US20160003179A1 (en) * 2014-07-07 2016-01-07 Caterpillar Energy Solutions Gmbh Condensation control system for engine
CN106555712A (en) * 2015-09-29 2017-04-05 长城汽车股份有限公司 A kind of engine charge moisture control system and automobile

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006046307A (en) * 2004-08-02 2006-02-16 Satoshi Suganuma Intake air humidifying device for internal combustion engine
CN201961310U (en) * 2011-01-31 2011-09-07 佛山市南海码金投资咨询有限公司 Energy-saving efficient automobile engine output power control device
US20160003179A1 (en) * 2014-07-07 2016-01-07 Caterpillar Energy Solutions Gmbh Condensation control system for engine
CN105134432A (en) * 2015-09-28 2015-12-09 苏州市海神达机械科技有限公司 Air intake system for engine
CN106555712A (en) * 2015-09-29 2017-04-05 长城汽车股份有限公司 A kind of engine charge moisture control system and automobile

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