CN111734542A - Switch type idling air inflow control method of motorcycle engine - Google Patents
Switch type idling air inflow control method of motorcycle engine Download PDFInfo
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- CN111734542A CN111734542A CN202010598193.0A CN202010598193A CN111734542A CN 111734542 A CN111734542 A CN 111734542A CN 202010598193 A CN202010598193 A CN 202010598193A CN 111734542 A CN111734542 A CN 111734542A
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- 238000000034 method Methods 0.000 title claims abstract description 25
- 241001269524 Dura Species 0.000 claims description 6
- 230000001276 controlling effect Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 2
- 230000014759 maintenance of location Effects 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 238000007792 addition Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
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Classifications
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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
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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
- F02D41/009—Electrical control of supply of combustible mixture or its constituents using means for generating position or synchronisation signals
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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
- F02D41/02—Circuit arrangements for generating control signals
- F02D41/14—Introducing closed-loop corrections
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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
- F02D2200/0406—Intake manifold pressure
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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
- F02D2200/101—Engine speed
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Combined Controls Of Internal Combustion Engines (AREA)
- Electrical Control Of Air Or Fuel Supplied To Internal-Combustion Engine (AREA)
Abstract
The invention relates to a switch type idling air inflow control method of a motorcycle engine, which comprises the following specific steps: step S1: detecting whether the engine enters an idling state, if so, acquiring the rotating speed and voltage information of the engine, and turning to step S2, if not, keeping the current running state; step S2: calculating opening teeth, opening continuous angles, finishing teeth and final position residence time of the switch type idle speed control valve, detecting whether the phase of the crankshaft reaches the opening teeth or not by the engine controller according to data of a crankshaft sensor, if so, turning to step S3, and if not, continuing to detect; step S3: the engine controller outputs low level, the control valve is opened, and the intake manifold admits air; step S4: if the phase of the crankshaft reaches the end tooth and the duration reaches the end dwell time, the engine controller outputs a high level and the control valve is closed, otherwise the intake manifold keeps an intake state. Compared with the prior art, the invention has the advantages of simplifying the structure of the idle speed control system, reducing the requirements and the cost on the idle speed control valve and the like.
Description
Technical Field
The invention relates to the field of motorcycle engine control, in particular to a switch type idling air inflow control method of a motorcycle engine.
Background
The idling of the motorcycle refers to a working condition that the power output of the engine is disconnected and the engine is in an idling state, under the working condition, the mechanical throttle valve is almost completely closed, and the engine can stably run at the target idling speed by controlling the air inflow of the bypass pipeline and the ignition device.
At present, two main modes of idle speed control exist: 1) in the traditional idle speed control method, the idle speed screw on the throttle body is manually adjusted to adjust the air inflow during idle speed, and the method has extensive control, large workload and poor environmental adaptability; 2) the automatic control method for motorcycle idle speed includes regulating the opening of idle speed control valve by the electronic control unit based on the target idle speed value and other parameters to change air inflow and regulating the ignition advance angle to realize idle speed control.
The prior art discloses 1) an electronic fuel injection motorcycle idle speed control method, according to the difference between the actual rotating speed of an engine and a target idle speed value, a stepping motor drives a telescopic rod connected with the stepping motor to move to adjust the switch of a bypass pipeline, so that the air inflow is changed, and the actual rotating speed is matched with the target idle speed value by combining with the adjustment of a corresponding ignition advance angle; 2) an idling control method for an electronic control unit of a motorcycle engine comprises the steps of starting a special electronic control unit when the engine is in an idling working condition, and controlling the opening of a solenoid valve according to the driving time of an idling solenoid valve obtained through calculation, so that the air inflow adjustment is realized; 3) the idle speed closed-loop control method for electrically controlled motorcycle engine includes monitoring the idle speed of the engine with the speed sensor, comparing the idle speed with the target speed value, and increasing or decreasing the opening of the bypass air valve based on the comparison result to realize the closed-loop control of the idle speed. However, the control system according to the above-mentioned disclosure needs to add an additional stepping motor and a driving module or an independent electric control unit, and changes the air input by adjusting the opening of the valve on the bypass channel, and when the control system is applied to a motorcycle, the control system has the disadvantages of complex system, large occupied space, high cost, and the like.
Disclosure of Invention
The invention aims to provide a switch type idling air inflow control method of a motorcycle engine to overcome the defects of complex idling control system, large occupied space and high cost in the prior art.
The purpose of the invention can be realized by the following technical scheme:
a method for controlling the air input of a motorcycle engine in an on-off idle speed specifically comprises the following steps:
step S1: detecting whether the engine enters an idling state, if so, acquiring the rotation speed information and the voltage information of the current engine, and turning to the step S2, otherwise, keeping the current running state;
step S2: calculating opening teeth, opening continuous angles, finishing teeth and final dwell time of the switch type idle speed control valve according to the rotating speed information and the voltage information of the engine, detecting whether the phase of the crankshaft reaches the opening teeth or not by the engine controller according to data uploaded by a crankshaft sensor, if so, turning to a step S3, otherwise, continuously detecting the phase of the crankshaft by the engine controller;
step S3: a pin of the engine controller outputs a low level, the switch type idle speed control valve is opened, and an air inlet manifold of the engine starts to admit air;
step S4: and the crankshaft keeps rotating, if the phase of the crankshaft reaches the end tooth and the duration reaches the end dwell time, a pin of an engine controller outputs a high level, the switch type idle speed control valve is closed, and otherwise, the air inlet manifold keeps an air inlet state.
The on-off idle speed control valve is mounted on a bypass passage of the engine.
Further, the switch type idle speed control valve is connected with a switch type low-side output channel of an engine controller.
The open duration angle of the on-off idle speed control valve is calculated by the following formula:
dura_ang＝max_open_ang(VRPM)*Idleairflow(VRPM)+offset(VIGN)*VRPM
the dura _ ang is the opening continuous angle of the switch type idle speed control valve, the max _ open _ ang is the maximum opening angle of the switch type idle speed control valve, the Idleailflow is the required air inflow of the engine, the VRPM is the rotating speed of the engine, and the offset (VIGN) is a corrected calibration variable based on the power supply voltage.
Further, the rotating speed of the engine is calculated according to the rotating speed information.
Further, the required intake air amount of the engine, the maximum opening angle of the on-off idle speed control valve, and the opening teeth are stored in the engine controller in a table form.
Further, the number of the crankshaft signal teeth corresponding to the opening continuation angle of the on-off idle speed control valve is specifically:
dura_tooth＝dura_ang/n
wherein dura _ tooth is the crankshaft signal tooth number, and n is the tooth number of the crankshaft.
Further, the number of the crankshaft signal teeth comprises a crankshaft signal integer part and a crankshaft signal decimal part, the crankshaft signal integer part is an integer part of the number of the crankshaft signal teeth, and the crankshaft signal decimal part is a decimal part of the number of the crankshaft signal teeth.
Further, the calculation formula of the final dwell time is specifically as follows:
frac_time＝VRPM/n*tooth_dec/60000
here, frac _ time is the last dwell time, and tooth _ dec is the crankshaft signal fraction.
Further, the calculation formula of the end tooth of the on-off idle speed control valve is as follows:
end_tooth＝start_tooth+tooth_int
wherein, end _ tooth is the ending tooth of the switch type idle speed control valve, start _ tooth is the opening tooth of the switch type idle speed control valve, and tooth _ int is the crankshaft signal integer part.
The engine controller is used for collecting signals of all the sensors, calculating and judging the signals and outputting control signals to the actuator.
And the intake manifold is provided with an intake manifold pressure sensor, and data acquired by the crankshaft sensor and the intake manifold pressure sensor are used for phase judgment and angle calculation of the crankshaft.
Compared with the prior art, the invention has the following beneficial effects:
the invention utilizes the commonly used switch type low-side output channel of the motorcycle engine controller to be connected with the switch type idle speed control valve, and controls the opening teeth and the opening angle of the control valve in the air intake stroke, thereby realizing the air intake control. Compared with a control mode of adjusting the air input by adopting an independent electric control unit and utilizing a stepping motor to adjust the opening of the idle speed valve, the invention greatly simplifies the structure of the idle speed control system and reduces the requirements and control cost for the idle speed control valve and a drive circuit thereof.
Drawings
FIG. 1 is a schematic flow diagram of the present invention;
fig. 2 is a schematic structural diagram of a switch-type low-side output driving circuit of a generator controller according to the present invention.
Detailed Description
The invention is described in detail below with reference to the figures and specific embodiments. The present embodiment is implemented on the premise of the technical solution of the present invention, and a detailed implementation manner and a specific operation process are given, but the scope of the present invention is not limited to the following embodiments.
As shown in fig. 1 and 2, a method for controlling the on-off idle speed air inflow of a motorcycle engine simplifies the structure of an idle speed control system, reduces the requirements and control cost for an idle speed control valve and a driving circuit thereof, and specifically comprises the following steps:
step S1: detecting whether the engine enters an idling state, if so, acquiring the rotation speed information and the voltage information of the current engine, and turning to the step S2, otherwise, keeping the current running state;
step S2: calculating opening teeth, opening continuous angles, finishing teeth and final position retention time of the switch type idle speed control valve according to the rotating speed information and the voltage information of the engine, detecting whether the phase of the crankshaft reaches the opening teeth or not by the engine controller according to data uploaded by a crankshaft sensor, if so, turning to a step S3, otherwise, continuously detecting the phase of the crankshaft by the engine controller;
step S3: a pin of an engine controller outputs a low level, a switch type idle speed control valve is opened, and an air inlet manifold of the engine starts to admit air;
step S4: and (3) the crankshaft keeps rotating, if the phase of the crankshaft reaches the end tooth and the duration reaches the end position retention time, a pin of the engine controller outputs a high level, the switch type idle speed control valve is closed, and otherwise, the air inlet manifold keeps an air inlet state.
The on-off idle speed control valve is mounted on a bypass passage of the engine.
The switch type idle speed control valve is connected with a switch type low-side output channel of an engine controller.
The open duration angle of the on-off idle speed control valve is calculated as follows:
dura_ang＝max_open_ang(VRPM)*Idleairflow(VRPM)+offset(VIGN)*VRPM
the dura _ ang is the opening continuous angle of the switch type idle speed control valve, the max _ open _ ang is the maximum opening angle of the switch type idle speed control valve, the Idleailflow is the required air inflow of the engine, the VRPM is the rotating speed of the engine, and the offset (VIGN) is a corrected calibration variable based on the power supply voltage.
And the rotating speed of the engine is calculated according to the rotating speed information.
The required air inflow of the engine, the maximum opening angle of the on-off idle speed control valve and the opening teeth are stored in the engine controller in a table form.
The crankshaft signal tooth number corresponding to the opening continuous angle of the switch type idle speed control valve is specifically as follows:
dura_tooth＝dura_ang/n
wherein dura _ tooth is the crankshaft signal tooth number, and n is the tooth number of the crankshaft.
The crankshaft signal tooth number comprises a crankshaft signal integer part and a crankshaft signal decimal part, the crankshaft signal integer part is an integer part of the crankshaft signal tooth number, and the crankshaft signal decimal part is a decimal part of the crankshaft signal tooth number.
The calculation formula of the final residence time is as follows:
frac_time＝VRPM/n*tooth_dec/60000
here, frac _ time is the last dwell time, and tooth _ dec is the crankshaft signal fraction.
The formula for calculating the end tooth of the on-off idle speed control valve is as follows:
end_tooth＝start_tooth+tooth_int
wherein, end _ tooth is the ending tooth of the switch type idle speed control valve, start _ tooth is the opening tooth of the switch type idle speed control valve, and tooth _ int is the crankshaft signal integer part.
The engine controller is used for collecting signals of all the sensors, calculating and judging the signals and outputting control signals to the actuator.
And an intake manifold pressure sensor is arranged on the intake manifold, and data acquired by the crankshaft sensor and the intake manifold pressure sensor are used for phase judgment and angle calculation of the crankshaft.
And in the air inlet stroke, when the engine controller detects the opening teeth, the on-off idle speed control valve is opened, and after the end teeth are reached and the duration reaches the end dwell time, the on-off idle speed control valve is closed, so that the adjustment of the air inlet amount under the idle working condition is realized.
In addition, it should be noted that the specific embodiments described in the present specification may have different names, and the above descriptions in the present specification are only illustrations of the structures of the present invention. All equivalent or simple changes in the structure, characteristics and principles of the invention are included in the protection scope of the invention. Various modifications or additions may be made to the described embodiments or methods may be similarly employed by those skilled in the art without departing from the scope of the invention as defined in the appending claims.
Claims (10)
1. A method for controlling the air input of a motorcycle engine in an on-off idle speed mode is characterized by comprising the following steps:
step S1: detecting whether the engine enters an idling state, if so, acquiring the rotation speed information and the voltage information of the current engine, and turning to the step S2, otherwise, keeping the current running state;
step S2: calculating opening teeth, opening continuous angles, finishing teeth and final dwell time of the switch type idle speed control valve according to the rotating speed information and the voltage information of the engine, detecting whether the phase of the crankshaft reaches the opening teeth or not by the engine controller according to data uploaded by a crankshaft sensor, if so, turning to a step S3, otherwise, continuously detecting the phase of the crankshaft by the engine controller;
step S3: a pin of the engine controller outputs a low level, the switch type idle speed control valve is opened, and an air inlet manifold of the engine starts to admit air;
step S4: and the crankshaft keeps rotating, if the phase of the crankshaft reaches the end tooth and the duration reaches the end dwell time, a pin of an engine controller outputs a high level, the switch type idle speed control valve is closed, and otherwise, the air inlet manifold keeps an air inlet state.
2. A method of controlling an idle speed intake air amount of a motorcycle engine as claimed in claim 1, wherein said idle speed control valve is installed on a bypass passage of the engine.
3. The method of claim 2, wherein the on-off idle speed control valve is connected to an on-off low side output channel of an engine controller.
4. A switch-type idle speed intake air amount control method of a motorcycle engine according to claim 1, wherein the open continuation angle of the switch-type idle speed control valve is calculated as follows:
dura_ang＝max_open_ang(VRPM)*Idleairflow(VRPM)+offset(VIGN)*VRPM
the dura _ ang is the opening continuous angle of the switch type idle speed control valve, the max _ open _ ang is the maximum opening angle of the switch type idle speed control valve, the Idleailflow is the required air inflow of the engine, the VRPM is the rotating speed of the engine, and the offset (VIGN) is a corrected calibration variable based on the power supply voltage.
5. A switch-type idle intake air amount control method of a motorcycle engine as claimed in claim 4, wherein the rotation speed of the engine is calculated based on the rotation speed information.
6. The method as claimed in claim 4, wherein the required air intake amount of the engine, the maximum opening angle of the on-off idle speed control valve, and the opening teeth are stored in the engine controller in a table form, and the corrected calibration variable based on the power supply voltage is also stored in the engine controller in a table form.
7. The method for controlling the open-close type idle speed air inflow of the motorcycle engine according to claim 4, wherein the number of the crankshaft signal teeth corresponding to the opening duration angle of the open-close type idle speed control valve is specifically as follows:
dura_tooth＝dura_ang/n
wherein dura _ tooth is the crankshaft signal tooth number, and n is the tooth number of the crankshaft.
8. The method of claim 7, wherein the number of crankshaft signal teeth includes a crankshaft signal integer part and a crankshaft signal decimal part, the crankshaft signal integer part is an integer part of the number of crankshaft signal teeth, and the crankshaft signal decimal part is a decimal part of the number of crankshaft signal teeth.
9. The method of claim 8, wherein the final dwell time is calculated as follows:
frac_time＝VRPM/n*tooth_dec/60000
here, frac _ time is the last dwell time, and tooth _ dec is the crankshaft signal fraction.
10. A switch-type idle speed intake air amount control method of a motorcycle engine according to claim 8, wherein a calculation formula of an end tooth of the switch-type idle speed control valve is as follows:
end_tooth＝start_tooth+tooth_int
wherein, end _ tooth is the ending tooth of the switch type idle speed control valve, start _ tooth is the opening tooth of the switch type idle speed control valve, and tooth _ int is the crankshaft signal integer part.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010598193.0A CN111734542A (en) | 2020-06-28 | 2020-06-28 | Switch type idling air inflow control method of motorcycle engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010598193.0A CN111734542A (en) | 2020-06-28 | 2020-06-28 | Switch type idling air inflow control method of motorcycle engine |
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| CN111734542A true CN111734542A (en) | 2020-10-02 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202010598193.0A Pending CN111734542A (en) | 2020-06-28 | 2020-06-28 | Switch type idling air inflow control method of motorcycle engine |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112557042A (en) * | 2020-11-25 | 2021-03-26 | 上汽通用五菱汽车股份有限公司 | Engine idling durability monitoring method |
| CN113982769A (en) * | 2021-09-06 | 2022-01-28 | 马瑞利（中国）有限公司 | Motorcycle engine timing synchronization method based on intake manifold |
-
2020
- 2020-06-28 CN CN202010598193.0A patent/CN111734542A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112557042A (en) * | 2020-11-25 | 2021-03-26 | 上汽通用五菱汽车股份有限公司 | Engine idling durability monitoring method |
| CN113982769A (en) * | 2021-09-06 | 2022-01-28 | 马瑞利（中国）有限公司 | Motorcycle engine timing synchronization method based on intake manifold |
| CN113982769B (en) * | 2021-09-06 | 2024-01-23 | 马瑞利（中国）有限公司 | Motorcycle engine timing synchronization method based on intake manifold |
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Application publication date: 20201002 |
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