CN109404148B - Air pressure control method and device and automobile - Google Patents
Air pressure control method and device and automobile Download PDFInfo
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- CN109404148B CN109404148B CN201811268605.3A CN201811268605A CN109404148B CN 109404148 B CN109404148 B CN 109404148B CN 201811268605 A CN201811268605 A CN 201811268605A CN 109404148 B CN109404148 B CN 109404148B
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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
- F02D41/0007—Controlling intake air for control of turbo-charged or super-charged engines
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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
- F02D23/00—Controlling engines characterised by their being supercharged
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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
- 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
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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
- 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
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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
- F02D2200/00—Input parameters for engine control
- F02D2200/02—Input parameters for engine control the parameters being related to the engine
- F02D2200/10—Parameters related to the engine output, e.g. engine torque or engine speed
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- 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
- Y02T10/12—Improving ICE efficiencies
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Control Of Throttle Valves Provided In The Intake System Or In The Exhaust System (AREA)
- Supercharger (AREA)
Abstract
The embodiment of the invention provides an air pressure control method, an air pressure control device and an automobile, and relates to the technical field of automobile control. The method comprises the following steps: the electronic control unit acquires position information sent by the displacement sensor and actual load generated by the engine; when the actual load is not matched with the demand load of the engine and the difference value between the actual load and the demand load is smaller than a first preset value, the electronic control unit outputs a first control instruction to the pressure controller according to the position information, so that the pressure controller adjusts the gas pressure in the actuator tank body according to the first control instruction, and the actual load generated by the engine is matched with the demand load of the engine. The method can solve the problem of engine performance parameter fluctuation caused by low supercharger control precision.
Description
Technical Field
The invention relates to the technical field of automobile control, in particular to an air pressure control method and device and an automobile.
Background
With the development of the automobile industry, the engine is being developed toward miniaturization and high economy. The requirement on the supercharger is higher and higher, and the requirement on the conventional supercharger is a challenge to improve the pressure ratio of the supercharger to meet the requirement on high performance of an engine and control the precision of the supercharger to reduce the performance fluctuation of the engine.
The existing supercharger actuator adopts two control modes, one mode is controlled by air pressure (positive pressure or negative pressure), the supercharger actuator has a simple structure and high thrust, but the control precision of the supercharger actuator is not high, so that the actuator pull rod shakes back and forth, noise is generated, and the performance of an engine is unstable; the other is electric control, and the electric control actuator is limited by a motor, generates small thrust and cannot provide a high compression ratio.
Disclosure of Invention
The invention aims to provide an air pressure control method, an air pressure control device and an automobile.
In order to achieve the above purpose, the embodiment of the present invention adopts the following technical solutions:
in a first aspect, an embodiment of the present invention provides an air pressure control method, which is applied to an automobile, where the automobile includes an engine, a supercharger, and a displacement sensor, the engine includes an electronic control unit, the supercharger includes a pressure controller, an actuator tank, and an actuator pull rod, the pressure controller is connected to the actuator tank, the actuator tank is connected to the actuator pull rod, the displacement sensor is disposed at a connection point between the actuator tank and the actuator pull rod, the electronic control unit is electrically connected to both the pressure controller and the displacement sensor, and the displacement sensor is configured to detect position information of the actuator pull rod, where the method includes: the electronic control unit acquires position information sent by the displacement sensor and actual load generated by the engine; and when the actual load is not matched with the demand load of the engine and the difference value between the actual load and the demand load is smaller than a first preset value, the electronic control unit outputs a first control instruction to the pressure controller according to the position information, so that the pressure controller adjusts the gas pressure in the actuator tank body according to the first control instruction, and the actual load generated by the engine is matched with the demand load of the engine.
In a second aspect, an embodiment of the present invention further provides an air pressure control device, which is applied to an automobile, where the automobile includes an engine, a supercharger, and a displacement sensor, the engine includes an electronic control unit, the supercharger includes a pressure controller, an actuator tank, and an actuator pull rod, the pressure controller is connected to the actuator tank, the actuator tank is connected to the actuator pull rod, the displacement sensor is disposed at a connection between the actuator tank and the actuator pull rod, the electronic control unit is electrically connected to the pressure controller and the displacement sensor, and the displacement sensor is configured to detect position information of the actuator pull rod, where the device includes: the acquisition unit is used for acquiring the position information sent by the displacement sensor and the actual load generated by the engine; and the instruction generating unit is used for outputting a first control instruction to the pressure controller according to the position information when the actual load is not matched with the demand load of the engine and the difference value between the actual load and the demand load is smaller than a first preset value, so that the pressure controller adjusts the gas pressure in the actuator tank body according to the first control instruction, and the actual load generated by the engine is matched with the demand load of the engine.
In a third aspect, an embodiment of the present invention further provides an automobile, including an engine, a supercharger and a displacement sensor, where the engine includes an electronic control unit, the supercharger includes a pressure controller, an actuator tank and an actuator pull rod, the pressure controller is connected to the actuator tank, the actuator tank is connected to the actuator pull rod, the displacement sensor is disposed at a connection point between the actuator tank and the actuator pull rod, the electronic control unit is electrically connected to both the pressure controller and the displacement sensor, and the displacement sensor is configured to detect position information of the actuator pull rod; the electronic control unit is used for acquiring position information sent by the displacement sensor and an actual load generated by the engine, and outputting a first control instruction to the pressure controller according to the position information when the actual load is not matched with a demand load of the engine and a difference value between the actual load and the demand load is smaller than a first preset value, so that the pressure controller can adjust gas pressure in the actuator tank body according to the first control instruction, and the actual load generated by the engine is matched with the demand load of the engine.
According to the air pressure control method, the air pressure control device and the automobile, when the actual load of the engine is not matched with the required load and the difference value of the actual load and the required load is smaller than a first preset value, a first control instruction is output to the pressure controller according to the position information, so that the pressure controller can adjust the air pressure in the actuator tank body according to the first control instruction, and the actual load generated by the engine is matched with the required load of the engine. Therefore, the electronic control unit can detect the shaking of the actuator pull rod according to the position information acquired by the displacement sensor, output a first control instruction to the pressure controller according to the position information, adjust the fluctuation of the gas pressure in the actuator tank body to be reduced, further reduce the shaking of the actuator pull rod and enable the output performance of the engine to be stable.
In order to make the aforementioned and other objects, features and advantages of the present invention comprehensible, preferred embodiments accompanied with figures are described in detail below.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.
FIG. 1 is a block diagram of an automobile according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of an automobile according to an embodiment of the present invention;
FIG. 3 is a flow chart illustrating a method for controlling air pressure according to an embodiment of the present invention;
fig. 4 is a schematic sub-flow diagram of step S120 provided in the embodiment of the present invention;
fig. 5 is a block diagram illustrating a structure of an air pressure control device according to an embodiment of the present invention.
Icon: 1-a car; 10-an engine; 11-an electronic control unit; 20-a supercharger; 21-a pressure controller; 22-an actuator tank; 23-an actuator pull rod; 24-a bypass valve; 30-a displacement sensor; 40-a pneumatic control device; 41-an acquisition unit; 42-an instruction generation unit; 421-a first acquisition subunit; 422-a second acquisition subunit; 423-first instruction generating subunit; 424-second instruction generating subunit.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations. Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the present invention without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures. Meanwhile, in the description of the present invention, the terms "first", "second", and the like are used only for distinguishing the description, and are not to be construed as indicating or implying relative importance.
As shown in fig. 1 and 2, for a structure diagram of an automobile 1 provided in an embodiment of the present invention, the automobile 1 includes an engine 10, a supercharger 20, and a displacement sensor 30, the engine 10 includes an electronic control unit 11, the supercharger 20 includes a pressure controller 21, an actuator tank 22, and an actuator pull rod 23, the pressure controller 21 is connected to the actuator tank 22, the actuator tank 22 is connected to the actuator pull rod 23, the actuator pull rod 23 is connected to the engine 10, the displacement sensor 30 is disposed at a connection position between the actuator tank 22 and the actuator pull rod 23, and the electronic control unit 11 is electrically connected to both the pressure controller 21 and the displacement sensor 30.
In this embodiment, the electronic control unit 11 may be a single chip, a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), an off-the-shelf programmable gate array (FPGA) or other programmable logic device, a discrete gate or transistor logic device, or a discrete hardware component; the pressure controller 21 may be a vacuum control valve for controlling the amount of gas supplied from the gas source to the actuator tank 22; the displacement sensor 30 is used for detecting the position information of the actuator pull rod 23.
Further, in the present embodiment, the automobile 1 further includes a bypass valve 24, and the actuator rod 23 is connected to the engine 10 through the bypass valve 24.
Fig. 3 is a schematic flow chart of an air pressure control method according to an embodiment of the present invention, and it should be noted that the air pressure control method according to the present invention is not limited by the specific sequence shown in fig. 3 and described below. It should be understood that in other embodiments, the order of some steps in the pneumatic control method according to the present invention may be interchanged according to actual needs, or some steps may be omitted or deleted. The specific flow shown in fig. 3 will be described in detail below. Referring to fig. 3, the present embodiment describes a processing flow of the electronic control unit 11, and the method includes:
in step S110, the electronic control unit 11 acquires the position information transmitted from the displacement sensor 30 and the actual load generated by the engine 10.
In this embodiment, before the step S101, the method further includes: the electronic control unit 11 receives the load instruction, generates a third control instruction according to the load instruction, and sends the third control instruction to the vacuum control valve, the vacuum control valve adjusts the opening according to the third control instruction to control the air source to provide air to the actuator tank 22, so as to adjust the air pressure in the actuator tank 22, the air pressure generated in the actuator tank 22 pushes the actuator pull rod 23 to move, and the opening of the bypass valve 24 is adjusted through the movement of the actuator pull rod 23.
The load command includes a required load of the engine 10, and the electronic control unit 11 is calibrated in advance with a correspondence relationship between the required load of the engine 10 and an opening degree of a vacuum control valve, a correspondence relationship between the opening degree of the vacuum control valve and an air pressure in the actuator tank 22, a correspondence relationship between the air pressure in the actuator tank 22 and an opening degree of the bypass valve 24, and a correspondence relationship between the air pressure in the actuator tank 22 and position information of the actuator rod 23. It will be appreciated that the opening of the vacuum control valve from 0% to 100% represents different engine 10 loads and gas pressures within the actuator tank 22, and that the gas pressure within the actuator tank 22 derived from the opening of the vacuum control valve represents different actuator pull rod 23 position information and bypass valve 24 opening.
For example, the required load in the load command received by the electronic control unit 11 is 5ms, the electronic control unit 11 obtains the target opening of the vacuum control valve corresponding to the required load of 5ms as 50% from the correspondence table between the required load of the engine 10 and the opening of the vacuum control valve calibrated in advance, the electronic control unit 11 sends a third control command to the vacuum control valve according to the target opening of the vacuum control valve as 50%, the third control command may be a PWM wave, the target opening of the vacuum control valve is controlled to be opened by 50% by adjusting the duty ratio of the PWM wave, and due to the aging of the supercharger 20 or the overlong time for obtaining the change of the operating condition, when the target opening of the vacuum control valve is opened by 50%, the actual gas pressure in the actuator tank 22 does not accord with the target gas pressure corresponding to the target opening of the vacuum control valve calibrated in advance by the electronic control unit 11 as 50%, the target position information of the actuator rod 23 and the target opening degree of the bypass valve 24, which are generated in such a manner that the actual position information of the actuator rod 23 and the actual opening degree of the bypass valve 24 correspond to 50% of the target opening degree of the vacuum control valve, do not coincide with each other, so that the actual load generated by the engine 10 does not match the required load.
In this embodiment, the load instruction may be sent by the vehicle control unit, and the vehicle control unit obtains the load instruction according to the accelerator depth and the gear information and sends the load instruction to the electronic control unit 11. The electronic control unit 11 may also be provided with a second preset value, and if the difference between the actual load generated by the engine 10 and the required load is smaller than the second preset value, the actual load generated by the engine 10 matches the required load; if the difference between the actual load generated by the engine 10 and the required load is greater than or equal to the second preset value, the actual load generated by the engine 10 does not match the required load; the second preset value may be 1 ms.
Step S120, when the actual load does not match the demand load of the engine 10 and the difference between the actual load and the demand load is smaller than a first preset value, the electronic control unit 11 outputs a first control instruction to the pressure controller 21 according to the position information, so that the pressure controller 21 adjusts the gas pressure in the actuator tank 22 according to the first control instruction, so that the actual load generated by the engine 10 matches the demand load of the engine 10.
In this embodiment, after acquiring the actual load generated by the engine 10, the electronic control unit 11 calculates a difference between the actual load and the required load in the load command, and if the difference is greater than or equal to a second preset value and smaller than a first preset value, the electronic control unit 11 outputs a first control command to the pressure controller 21 according to the position information, so that the pressure controller 21 adjusts the gas pressure in the actuator tank 22 according to the first control command, so that the actual load generated by the engine 10 matches the required load of the engine 10. Wherein the first preset value may be set to 3 ms.
As shown in fig. 4, in the present embodiment, the step S120 includes the following sub-steps:
and step S121, acquiring the target opening degree of the vacuum control valve corresponding to the demand load.
In the present embodiment, the electronic control unit 11 obtains the target opening degree of the vacuum control valve corresponding to the required load from a correspondence table of the required load of the engine 10 and the opening degree of the vacuum control valve, which is calibrated in advance.
And step S122, obtaining the target position information of the actuator pull rod 23 corresponding to the target opening according to the corresponding relation.
In this embodiment, the electronic control unit 11 further prestores a correspondence relationship between the opening degrees of the vacuum control valves and the position information of the actuator rod 23, and after the electronic control unit 11 obtains the target opening degree of the vacuum control valve corresponding to the demand load from a correspondence relationship table of the demand load of the engine 10 and the opening degrees of the vacuum control valves, which is calibrated in advance, the electronic control unit 11 obtains the target position information of the actuator rod 23 corresponding to the target opening degree from the correspondence relationship between the opening degrees of the vacuum control valves and the position information of the actuator rod 23. It will be appreciated that opening of the vacuum control valve from 0% to 100% represents different actuator pull rod 23 position information, which may be expressed in degrees. For example, the opening degree of the vacuum control valve is in one-to-one correspondence with the angle of the actuator pull rod 23 from 0 to 100 percent to 0 to 180 degrees.
Step S123, generating the first control instruction according to the position information and the target position information, and outputting the first control instruction to the vacuum control valve.
In this embodiment, the electronic control unit 11 obtains a difference value (i.e., an angle difference value) of the position information according to the position information and the target position information, the electronic control unit 11 may obtain a difference value for adjusting the opening degree of the vacuum control valve according to the difference value of the position information, and outputs a first control instruction to the vacuum control valve according to the difference value of the opening degree of the vacuum control valve, so that the opening degree of the vacuum control valve (i.e., the target opening degree obtained according to the demand load) changes the difference value of the opening degree, and further, the gas pressure in the actuator tank 22 changes correspondingly, so that the difference value between the actual load generated by the engine 10 and the demand load of the engine 10 is smaller than a second preset value.
It is understood that, if the difference in the position information is 10 °, the electronic control unit 11 may preset a correspondence relationship that the difference in the position information is 1 ° corresponding to the difference in the opening degree of the vacuum control valve being 1.8%, the difference of the opening degrees of the vacuum control valves, which is calculated from the correspondence between the difference of the position information and the difference of the opening degrees of the vacuum control valves, for which the difference of the position information is 10 °, is 18%, if the target opening degree of the vacuum control valve is 50%, the electronic control unit 11 adjusts the target opening degree of the vacuum control valve to be changed by 18%, if the position information is greater than the target position information, the target opening degree of the vacuum control valve is decreased by 18%, and the opening degree of the vacuum control valve is actually 32%, that is, when the opening degree of the vacuum control valve is 32%, the difference between the actual load and the required load of the engine 10 is smaller than the second preset value.
Further, in this embodiment, the method further includes the steps of:
in step S130, when the actual load does not match the demand load of the engine 10 and the difference between the actual load and the demand load is greater than or equal to the first preset value, the electronic control unit 11 outputs a second control command to the pressure controller 21 according to the actual load, so that the pressure controller 21 adjusts the gas pressure in the actuator tank 22 according to the second control command, so that the actual load generated by the engine 10 matches the demand load of the engine 10.
In this embodiment, the second control command is generated according to the difference between the actual load and the required load, and is output to the vacuum control valve.
In the present embodiment, the electronic control unit 11, after acquiring the actual load generated by the engine 10, the difference value between the actual load and the demand load in the load instruction is calculated, if the difference value is greater than or equal to a first preset value, the electronic control unit 11 obtains the adjustment amount of the target opening of the vacuum control valve (i.e. the opening difference of the vacuum control valve) according to the preset corresponding relationship between the difference between the actual load and the required load and the opening difference of the vacuum control valve, the electronic control unit 11 outputs a second control instruction to the vacuum control valve according to the adjustment amount of the target opening of the vacuum control valve, so that the target opening of the vacuum control valve changes the adjustment amount, and then the gas pressure in the actuator tank 22 is correspondingly changed, so that the difference between the actual load generated by the engine 10 and the required load of the engine 10 is smaller than a second preset value.
It is understood that, if the difference between the actual load and the required load is 5ms, the electronic control unit 11 may preset a correspondence relationship that the difference between the load and the required load is 1 ° and the difference between the opening degrees of the vacuum control valves is 5%, calculate the difference between the opening degrees of the vacuum control valves corresponding to the difference between the load and the opening degrees of the vacuum control valves to be 25% according to the correspondence relationship between the difference between the load and the opening degrees of the vacuum control valves, if the target opening degree of the vacuum control valves is 50%, the electronic control unit 11 may adjust the target opening degree of the vacuum control valves to be changed by 25%, if the actual load is greater than the required load, the target opening degree of the vacuum control valves may be decreased by 25%, and the opening degree of the vacuum control valves is actually 25%, that is, if the opening degree of the vacuum control valves is 25%, the difference between the actual load and the required load of the engine 10 is less than the second preset value.
As shown in fig. 5, which is a schematic structural diagram of an air pressure control device 40 provided in the embodiment of the present invention, the air pressure control device 40 is applied to an automobile 1, it should be noted that the basic principle and the generated technical effects of the air pressure control device 40 provided in the embodiment are the same as those of the foregoing method embodiment, and for brief description, reference may be made to corresponding contents in the foregoing method embodiment for parts not mentioned in the embodiment. The air pressure control device 40 includes an acquisition unit 41 and an instruction generation unit 42.
In the present embodiment, the air pressure control device 40 includes at least one software functional module that can be stored in a memory of the automobile 1 in a form of software or firmware (firmware), and the electronic control unit 11 is configured to execute executable modules stored in the memory, such as the software functional module and a computer program included in the air pressure control device 40.
The acquiring unit 41 is configured to acquire the position information sent by the displacement sensor 30 and the actual load generated by the engine 10.
It is understood that the acquiring unit 41 may perform the step S110.
The instruction generating unit 42 is configured to output a first control instruction to the pressure controller 21 according to the position information when the actual load does not match the demand load of the engine 10 and a difference between the actual load and the demand load is smaller than a first preset value, so that the pressure controller 21 adjusts the gas pressure in the actuator tank 22 according to the first control instruction, so that the actual load generated by the engine 10 matches the demand load of the engine 10.
It is understood that the instruction generating unit 42 may execute the above step S120.
In this embodiment, the instruction generating unit 42 includes a first obtaining sub-unit 421, a second obtaining sub-unit 422, and a first instruction generating sub-unit 423.
The first obtaining subunit 421 is configured to obtain a target opening degree of the vacuum control valve corresponding to the demand load.
It is understood that the first acquiring subunit 421 may perform the step S121.
The second obtaining subunit 422 is configured to obtain, according to the corresponding relationship, target position information of the actuator pull rod 23 corresponding to the target opening.
It is understood that the second acquiring subunit 422 may perform the step S122.
The first instruction generating subunit 423 is configured to generate the first control instruction according to the position information and the target position information, and output the first control instruction to the vacuum control valve.
It is understood that the first instruction generating subunit 423 may execute the step S123 described above.
Further, in this embodiment, the instruction generating unit 42 is further configured to output a second control instruction to the pressure controller 21 according to the actual load when the actual load does not match the demand load of the engine 10 and the difference between the actual load and the demand load is greater than or equal to the first preset value, so that the pressure controller 21 adjusts the gas pressure in the actuator tank 22 according to the second control instruction, so that the actual load generated by the engine 10 matches the demand load of the engine 10.
It is understood that the instruction generating unit 42 may also execute the above step S130.
In this embodiment, the instruction generating unit 42 further includes a second instruction generating subunit 424, and the second instruction generating subunit 424 is configured to generate the second control instruction according to the difference between the actual load and the required load, and output the second control instruction to the vacuum control valve.
In summary, according to the air pressure control method, the air pressure control device and the automobile provided by the embodiments of the present invention, when the actual load of the engine is not matched with the required load and the difference between the actual load and the required load is smaller than the first preset value, the method outputs the first control command to the pressure controller according to the position information, so that the pressure controller adjusts the gas pressure in the actuator tank according to the first control command, so that the actual load generated by the engine is matched with the required load of the engine. Therefore, the electronic control unit can detect the shaking of the actuator pull rod according to the position information acquired by the displacement sensor, output a first control instruction to the pressure controller according to the position information, adjust the fluctuation of the gas pressure in the actuator tank body to be reduced, further reduce the shaking of the actuator pull rod and enable the output performance of the engine to be stable.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus 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 apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention. It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.
Claims (7)
1. A pneumatic control method is characterized by being applied to an automobile, wherein the automobile comprises an engine, a supercharger and a displacement sensor, the engine comprises an electronic control unit, the supercharger comprises a pressure controller, an actuator tank body and an actuator pull rod, the pressure controller is connected with the actuator tank body, the actuator tank body is connected with the actuator pull rod, the actuator pull rod is connected with the engine, the displacement sensor is arranged at the joint of the actuator tank body and the actuator pull rod, the electronic control unit is electrically connected with the pressure controller and the displacement sensor, the displacement sensor is used for detecting the position information of the actuator pull rod, the pressure controller is a vacuum control valve, and the electronic control unit is pre-stored with the corresponding relation between the opening degree of the vacuum control valve and the position information of the actuator pull rod, the relative relation between the demand load of the engine and the opening degree of the vacuum control valve is calibrated in the electronic control unit in advance, and the method comprises the following steps:
the electronic control unit acquires position information sent by the displacement sensor and actual load generated by the engine;
when the actual load is not matched with the demand load of the engine and the difference value between the actual load and the demand load is smaller than a first preset value, the electronic control unit acquires a target opening degree of the vacuum control valve corresponding to the demand load, acquires target position information of the actuator pull rod corresponding to the target opening degree according to the corresponding relation, generates a first control instruction according to the position information and the target position information, and outputs the first control instruction to the vacuum control valve, so that the pressure controller adjusts the gas pressure in the actuator tank body according to the first control instruction, and the actual load generated by the engine is matched with the demand load of the engine.
2. The method of air pressure control as claimed in claim 1, further comprising:
when the actual load is not matched with the demand load of the engine and the difference value between the actual load and the demand load is larger than or equal to the first preset value, the electronic control unit outputs a second control instruction to the pressure controller according to the actual load, so that the pressure controller adjusts the gas pressure in the actuator tank body according to the second control instruction, and the actual load generated by the engine is matched with the demand load of the engine.
3. The air pressure control method according to claim 2, wherein the pressure controller is a vacuum control valve, and the step of outputting a second control command to the pressure controller according to the actual load comprises:
and generating the second control instruction according to the difference value between the actual load and the required load, and outputting the second control instruction to the vacuum control valve.
4. An air pressure control device is characterized in that the air pressure control device is applied to an automobile, the automobile comprises an engine, a supercharger and a displacement sensor, the engine comprises an electronic control unit, the supercharger comprises a pressure controller, an actuator tank body and an actuator pull rod, the pressure controller is connected with the actuator tank body, the actuator tank body is connected with the actuator pull rod, the actuator pull rod is connected with the engine, the displacement sensor is arranged at the joint of the actuator tank body and the actuator pull rod, the electronic control unit is electrically connected with the pressure controller and the displacement sensor, the displacement sensor is used for detecting the position information of the actuator pull rod, the pressure controller is a vacuum control valve, and the electronic control unit is pre-stored with the corresponding relation between the opening degree of the vacuum control valve and the position information of the actuator pull rod, the relative relation between the demand load of the engine and the opening degree of the vacuum control valve is calibrated in the electronic control unit in advance, and the device comprises:
the acquisition unit is used for acquiring the position information sent by the displacement sensor and the actual load generated by the engine;
the command generation unit is used for outputting a first control command to the pressure controller according to the position information when the actual load is not matched with the demand load of the engine and the difference value between the actual load and the demand load is smaller than a first preset value, so that the pressure controller can adjust the gas pressure in the actuator tank body according to the first control command, and the actual load generated by the engine is matched with the demand load of the engine;
the instruction generation unit includes: a first acquiring subunit, configured to acquire a target opening degree of the vacuum control valve corresponding to the demand load;
the second acquisition subunit is used for acquiring target position information of the actuator pull rod corresponding to the target opening according to the corresponding relation;
and the first instruction generating subunit is used for generating the first control instruction according to the position information and the target position information and outputting the first control instruction to the vacuum control valve.
5. The air pressure control device according to claim 4, wherein the command generating unit is further configured to output a second control command to the pressure controller in accordance with the actual load when the actual load does not match the required load of the engine and a difference between the actual load and the required load is greater than or equal to the first preset value, so that the pressure controller adjusts the gas pressure in the actuator tank in accordance with the second control command so that the actual load generated by the engine matches the required load of the engine.
6. The air pressure control apparatus according to claim 5, wherein the pressure controller is a vacuum control valve, and the instruction generating unit includes:
and the second instruction generating subunit is configured to generate the second control instruction according to the difference between the actual load and the required load, and output the second control instruction to the vacuum control valve.
7. An automobile is characterized by comprising an engine, a supercharger and a displacement sensor, wherein the engine comprises an electronic control unit, the supercharger comprises a pressure controller, an actuator tank body and an actuator pull rod, the pressure controller is connected with the actuator tank body, the actuator tank body is connected with the actuator pull rod, the actuator pull rod is connected with the engine, the displacement sensor is arranged at the joint of the actuator tank body and the actuator pull rod, the electronic control unit is electrically connected with the pressure controller and the displacement sensor, the displacement sensor is used for detecting the position information of the actuator pull rod, the pressure controller is a vacuum control valve, and the electronic control unit is pre-stored with the corresponding relation between the opening degree of the vacuum control valve and the position information of the actuator pull rod, the relative relation between the demand load of the engine and the opening of the vacuum control valve is calibrated in the electronic control unit in advance;
the electronic control unit is used for acquiring position information sent by the displacement sensor and an actual load generated by the engine, acquiring a target opening degree of the vacuum control valve corresponding to the required load when the actual load is not matched with the required load of the engine and a difference value between the actual load and the required load is smaller than a first preset value, acquiring target position information of the actuator pull rod corresponding to the target opening degree according to the corresponding relation, generating a first control command according to the position information and the target position information, and outputting the first control command to the vacuum control valve, so that the pressure controller adjusts gas pressure in the actuator tank body according to the first control command, and the actual load generated by the engine is matched with the required load of the engine.
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| CN201811268605.3A CN109404148B (en) | 2018-10-29 | 2018-10-29 | Air pressure control method and device and automobile |
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| CN201811268605.3A CN109404148B (en) | 2018-10-29 | 2018-10-29 | Air pressure control method and device and automobile |
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| JP2004150400A (en) * | 2002-11-01 | 2004-05-27 | Hino Motors Ltd | Continuously operating device for apparatus for engine |
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| KR101471306B1 (en) * | 2013-11-15 | 2014-12-09 | 주식회사 현대케피코 | apparatus for controlling Waste gate valve of turbo charger |
| CN107587947A (en) * | 2016-07-06 | 2018-01-16 | 现代自动车株式会社 | Control the method and system of vehicle Charge device |
| CN108060987A (en) * | 2018-01-02 | 2018-05-22 | 无锡财尔科技有限公司 | Turbocharger and control method with intelligent control |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006274831A (en) * | 2005-03-28 | 2006-10-12 | Denso Corp | Control device for internal combustion engine with turbocharger |
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- 2018-10-29 CN CN201811268605.3A patent/CN109404148B/en active Active
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004150400A (en) * | 2002-11-01 | 2004-05-27 | Hino Motors Ltd | Continuously operating device for apparatus for engine |
| CN103967592A (en) * | 2013-08-23 | 2014-08-06 | 江苏大学 | Engine turbocharger |
| KR101471306B1 (en) * | 2013-11-15 | 2014-12-09 | 주식회사 현대케피코 | apparatus for controlling Waste gate valve of turbo charger |
| CN107587947A (en) * | 2016-07-06 | 2018-01-16 | 现代自动车株式会社 | Control the method and system of vehicle Charge device |
| CN108060987A (en) * | 2018-01-02 | 2018-05-22 | 无锡财尔科技有限公司 | Turbocharger and control method with intelligent control |
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