CN112983658A - Method for controlling an engine, controller and motor vehicle - Google Patents
Method for controlling an engine, controller and motor vehicle Download PDFInfo
- Publication number
- CN112983658A CN112983658A CN201911309167.5A CN201911309167A CN112983658A CN 112983658 A CN112983658 A CN 112983658A CN 201911309167 A CN201911309167 A CN 201911309167A CN 112983658 A CN112983658 A CN 112983658A
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- China
- Prior art keywords
- engine
- time
- ignition power
- controller
- controlling
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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
- 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
- F02D17/00—Controlling engines by cutting out individual cylinders; Rendering engines inoperative or idling
- F02D17/04—Controlling engines by cutting out individual cylinders; Rendering engines inoperative or idling rendering engines inoperative or idling, e.g. caused by abnormal conditions
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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
- F02D2200/50—Input parameters for engine control said parameters being related to the vehicle or its components
- F02D2200/501—Vehicle speed
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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
- F02D2200/50—Input parameters for engine control said parameters being related to the vehicle or its components
- F02D2200/502—Neutral gear position
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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
- F02D2200/60—Input parameters for engine control said parameters being related to the driver demands or status
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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 Vehicle Engines Or Engines For Specific Uses (AREA)
Abstract
The invention relates to a method for controlling an engine, a controller and a motor vehicle. The method for controlling an engine includes the steps of: judging the state of the ignition power supply; determining the opening time of the ignition power supply; if the engine ignition power source on time is within a prescribed on time range, a misfire operation is performed on the engine.
Description
Technical Field
The invention relates to a method for controlling an engine, in particular an internal combustion engine, a controller and a motor vehicle.
Background
In current motor vehicles, it is desirable to reduce the idle time of the engine to reduce energy consumption and emissions on the one hand, and on the other hand, it is undesirable to start the engine shut down too often to allow the driver to wait too long. Engine start stop technology aims to reconcile the above contradictions, and existing engine start stop technology still leaves much room for improvement.
For example, if the driver actuates the brake pedal to park the motor vehicle, puts the shift lever into park or neutral again, and continues to actuate the brake pedal, the engine is operated at idle speed. If the driver wishes to shut down the engine at this time, he presses the start button to effect the shutdown. The driver may then press the start button twice, for example, inadvertently.
In this case, the controller of the engine receives the start instruction immediately after receiving the shutdown instruction. At this time, if the engine speed does not drop to 0, the engine speed slowly returns to the idle speed, and this process usually lasts for 4s to 6 s. Such a long recovery time may cause the driver to feel uncomfortable. In this case, the driver may expect the engine to either stop quickly or to quickly return to idle speed.
The present invention is intended to solve the above-mentioned technical problems.
Disclosure of Invention
The invention is based on the object of specifying a method for controlling an engine, with which driving comfort can be increased.
The method for controlling an engine according to the present invention includes the steps of:
judging the state of the ignition power supply;
determining the opening time of the ignition power supply;
if the engine ignition power source on time is within a prescribed on time range, a misfire operation is performed on the engine. According to the method of the present invention, the engine is turned off even if the ignition power source is in the on state, under the condition that the respective conditions are satisfied. Therefore, particularly in the case where the driver erroneously operates the ignition switch, the driver does not wait for a long time for the engine to restart and return to the idle rotation speed.
Preferably, the predefined opening time ranges are: below the threshold for the ignition power on time. The method is performed if more than two operations of the ignition switch are detected within a determined time window. The length of the time window is preferably less than 1 second.
According to a preferred embodiment, the method further includes determining whether the assist determination condition is satisfied, and performing a misfire operation on the engine only if the assist determination condition is satisfied.
By assisting in determining the conditions, the accuracy of the method can be improved to avoid erroneous flameout operations.
Preferably, the auxiliary judgment condition includes one or more of the following conditions:
the vehicle speed is close to zero or equal to zero;
the engine speed is within a predetermined range;
the engine is not in a starting state;
the vehicle is in a determined gear condition;
the brake actuating member is operated.
The auxiliary judgment condition may further include: the ignition power off time is within a predetermined range and/or the vehicle is in neutral or park. The invention further relates to a control unit for controlling an engine of a motor vehicle, which control unit executes the method according to the invention. The invention also relates to a motor vehicle comprising said controller.
Drawings
Fig. 1 shows a flow chart of a method according to the invention.
Detailed Description
The method and the motor vehicle according to the invention will be described in the following by means of specific embodiments with reference to the accompanying drawings. The exemplary embodiments, however, may be embodied in many different forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of example embodiments to those skilled in the art.
In the following, a preferred embodiment of the method according to the invention is described in detail with reference to fig. 1. The execution of the method shown in fig. 1 is preferably triggered when the ignition switch is manipulated more than twice in succession in a short time. For example, if the ignition switch is manipulated more than twice within a certain time window, it is considered that a continuous manipulation for a short time has occurred. The length of the time window is preferably less than 1 second, for example 0.5 second. It is of course also possible to trigger the execution of the method shown in fig. 1 each time the ignition switch is actuated.
In the method according to the present invention, the state of the ignition power source is determined in step S01. If it is determined in step S01 that the ignition power source is in the on state, it goes to step S02, otherwise it goes to step S08.
In step S08, the ignition-off time is incremented or counted up, and the ignition-on time is reset to zero. In this case, for example, a dedicated counter or timer may be provided for the ignition power supply off time in order to record the ignition power supply off time. The method then ends.
In step S02, the ignition power on time is incrementally calculated or the count time is incremented. In this case, for example, a dedicated counter or timer may be provided for the ignition supply on time in order to record the ignition supply on time. Then, the routine proceeds to step S03, where it is determined whether the ignition power on time is within a predetermined on time range. Preferably, it is determined whether the ignition power on time is less than an ignition power on time threshold.
If it is judged at step S03 that the ignition power on time is within the predetermined on time range, it goes to step S04, otherwise it goes to step S06. In step S04, it is determined whether or not the assist determination condition is satisfied.
Preferably, the auxiliary judgment condition includes one or more of the following conditions:
the ignition power off time is in a preset range, for example, the ignition power off time is greater than the judgment time minimum value and less than the judgment time maximum value;
the engine speed is within a predetermined range, e.g., the engine speed is below a speed threshold;
the vehicle speed is close to zero or equal to zero;
the engine is not in a starting state;
the vehicle is in a determined gear condition, i.e. the vehicle is in neutral or park;
the brake actuating element is actuated, i.e. the brake pedal is depressed or the brake switch is actuated.
If it is determined in step S04 that the assist determination condition is satisfied, the flow proceeds to step S05, otherwise, the flow proceeds to step S07. In step S05, the stall request flag is set to 1 and the stall operation is performed. For example, the fuel system of the engine is directly shut off. If the engine has been stopped, the ignition power-off time and the ignition power-on time are reset to zero. The method then ends.
In step S06, the ignition power off time is reset to zero. And then goes to step S07.
In step S07, the stall request flag is reset to zero. The method then ends.
Other embodiments of the present invention will readily suggest themselves to such skilled persons having the benefit of this disclosure. This application is intended to cover any variations, uses, or adaptations of the invention following, in general, the principles of the invention and including such departures from the present disclosure as come within known or customary practice within the art to which the invention pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the invention being indicated by the following claims.
Claims (10)
1. A method for controlling an engine, comprising the steps of:
judging a state of the ignition power source (S01);
determining the opening time of the ignition power supply;
if the engine ignition power source on time is within a prescribed on time range, a misfire operation is performed on the engine.
2. The method of claim 1, wherein the predefined open time range is: below the threshold for the ignition power on time.
3. Method according to claim 1, characterized in that the method is performed if more than two operations of the ignition switch are detected within a determined time window.
4. The method of claim 3, wherein the time window is less than 1 second in length.
5. The method of claim 1, further comprising determining whether an auxiliary determination condition is satisfied (S04), and performing a misfire operation on the engine only if the auxiliary determination condition is satisfied.
6. The method of claim 5, wherein the auxiliary judgment condition comprises one or more of the following conditions:
the vehicle speed is close to zero or equal to zero;
the engine speed is within a predetermined range;
the engine is not in a starting state;
the vehicle is in a determined gear condition;
the brake actuating member is operated.
7. The method of claim 5, wherein the auxiliary judgment condition comprises: the ignition power off time is within a predetermined range.
8. The method of claim 5, wherein the auxiliary judgment condition comprises: the vehicle is in neutral or park.
9. A controller for controlling an engine of a motor vehicle, the controller performing the method according to any one of the preceding claims.
10. A motor vehicle comprising a controller according to claim 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911309167.5A CN112983658A (en) | 2019-12-18 | 2019-12-18 | Method for controlling an engine, controller and motor vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911309167.5A CN112983658A (en) | 2019-12-18 | 2019-12-18 | Method for controlling an engine, controller and motor vehicle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112983658A true CN112983658A (en) | 2021-06-18 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911309167.5A Pending CN112983658A (en) | 2019-12-18 | 2019-12-18 | Method for controlling an engine, controller and motor vehicle |
Country Status (1)
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| CN (1) | CN112983658A (en) |
Citations (15)
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2019
- 2019-12-18 CN CN201911309167.5A patent/CN112983658A/en active Pending
Patent Citations (15)
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| JPH1030485A (en) * | 1996-07-12 | 1998-02-03 | Sanshin Ind Co Ltd | Fuel injection control device for internal combustion engine |
| DE10030290A1 (en) * | 1999-06-30 | 2001-08-23 | Valeo Equip Electr Moteur | Method and system for automatically controlling the shutdown and restart of an internal combustion engine of a vehicle when it is temporarily out of service |
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Application publication date: 20210618 |
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