CN110425071B - Engine start control method - Google Patents
Engine start control method Download PDFInfo
- Publication number
- CN110425071B CN110425071B CN201910654034.5A CN201910654034A CN110425071B CN 110425071 B CN110425071 B CN 110425071B CN 201910654034 A CN201910654034 A CN 201910654034A CN 110425071 B CN110425071 B CN 110425071B
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- CN
- China
- Prior art keywords
- engine
- motor
- control method
- reverse rotation
- oil injection
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- 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
- F02D41/30—Controlling fuel injection
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02N—STARTING OF COMBUSTION ENGINES; STARTING AIDS FOR SUCH ENGINES, NOT OTHERWISE PROVIDED FOR
- F02N11/00—Starting of engines by means of electric motors
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Electrical Control Of Air Or Fuel Supplied To Internal-Combustion Engine (AREA)
- Combined Controls Of Internal Combustion Engines (AREA)
- Electrical Control Of Ignition Timing (AREA)
- Control Of Vehicle Engines Or Engines For Specific Uses (AREA)
Abstract
An engine starting control method, during the reverse rotation of a motor, the engine rotates along with the motor in the reverse direction, and fuel injection is carried out at the time of the engine needing fuel injection by the fuel injection amount of n1 times of the forward rotation, wherein n1 is a coefficient which is larger than 0 and smaller than 1. The invention avoids excessive reverse rotation by reducing the fuel injection quantity, properly injects fuel into the air inlet passage during reverse rotation, forms an oil film on the wall surface of the air inlet passage, and can improve the starting performance of the engine when the engine is started in forward rotation.
Description
Technical Field
The invention relates to automation equipment, in particular to an engine starting control method.
Background
The starting and power generation integrated machine is widely applied to automobiles. The application in the field of motorcycles is also becoming more and more extensive at present.
The starting and power generation integrated machine has at least the following two starting methods:
a. the forward rotation is stopped, then the reverse rotation is carried out, and then the forward rotation is carried out again after the reverse rotation (if the forward rotation is unsuccessful, the reverse rotation is carried out again → the forward rotation);
b. firstly, reversely rotating, judging whether the passing compression top dead center or the passing exhaust top dead center is the compression top dead center, stopping reversely rotating after meeting the conditions, and immediately rotating forwards.
When the electronic fuel injection engine rotates in the forward direction, quantitative fuel injection and ignition are carried out according to the rotation position of the crankshaft. Generally, the reverse rotation is performed when the fire is struck. If the engine is driven to rotate reversely, the same amount of fuel injection and ignition as that of the normal rotation are performed according to the position of the crankshaft, and the engine may be excessively rotated reversely to cause runaway reverse rotation, thereby possibly having adverse effects on the engine.
Disclosure of Invention
In order to overcome the above-described drawbacks, the present invention provides an engine start control method capable of avoiding excessive reverse rotation to thereby alleviate adverse effects on the engine.
The technical scheme adopted by the invention for solving the technical problem is as follows: an engine starting control method, during the reverse rotation of a motor, the engine rotates along with the motor in the reverse direction, and fuel injection is carried out at the time of the engine needing fuel injection by the fuel injection amount of n1 times of the forward rotation, wherein n1 is a coefficient which is larger than 0 and smaller than 1.
As a further improvement of the invention, during the reverse rotation of the motor, the ignition energy is n2 times of the normal ignition energy, and n2 is a coefficient greater than 0 and less than 1.
As a further development of the invention, the engine is a starter generator.
As a further improvement of the invention, the engine rotates in the reverse direction before rotating in the forward direction.
As a further improvement of the present invention, the engine includes a motor control device that drives the motor to rotate and controls the motor to generate power, an injection control device that injects a predetermined amount of oil at a predetermined timing, and an ignition control device that ignites at a predetermined timing.
The invention has the beneficial effects that: when the engine is driven by the driving motor to rotate reversely, quantitative oil injection is not carried out, but a coefficient which is more than 0 and less than 1 is multiplied on the basis of the oil injection quantity of the forward rotation, namely, the oil injection quantity is reduced during the reverse rotation, excessive reverse rotation is avoided, oil is properly injected into the air inlet passage, an oil film is formed on the wall surface of the air inlet passage, and when the engine is started in the forward rotation, the starting performance of the engine can be improved.
Detailed Description
An engine starting control method, during the reverse rotation of a motor, the engine rotates along with the motor in the reverse direction, and fuel injection is carried out at the time of the engine needing fuel injection by the fuel injection amount of n1 times of the forward rotation, wherein n1 is a coefficient which is larger than 0 and smaller than 1. When the engine is driven by the driving motor to rotate reversely, quantitative oil injection is not carried out, and a coefficient which is larger than 0 and smaller than 1 is multiplied on the basis of the forward rotation oil injection quantity. When the engine rotates reversely, the fuel injection quantity is reduced, excessive reverse rotation is avoided, fuel is injected into the air inlet channel properly, an oil film is formed on the wall surface of the air inlet channel, and when the engine rotates forwardly and starts, the starting performance of the engine can be improved.
Preferably, the ignition energy is n2 times the normal ignition energy during the reverse rotation of the motor, and n2 is a coefficient greater than 0 and less than 1. The purpose is to control the number of reverse rotation turns within a proper range, and avoid the phenomenon that the reverse rotation is out of control and excessive reverse rotation possibly causes abnormal combustion in an engine silencer to cause abnormal burning loss of a catalyst. Excessive reverse rotation can also cause abnormal wear to the engine starting mechanism, causing the starting mechanism to fail.
Preferably, the engine is a starter generator, thereby driving the engine to start rotation and generating electricity when the engine is running.
Preferably, the engine rotates in a reverse direction before rotating in a forward direction. The first reverse rotation corresponds to run-up before the engine is rotated forward, so that the engine is rotated and started more easily.
Specifically, the engine comprises a motor control device for driving the motor to rotate and controlling the motor to generate power, an oil injection control device for injecting a specified oil quantity at a specified time, and an ignition control device for igniting at a specified time.
When the motor is driven to rotate the engine reversely, quantitative oil injection is not carried out, but a coefficient which is larger than 0 and smaller than 1 is multiplied on the basis of the forward rotation oil injection amount, so that the oil injection amount is reduced, and excessive reverse rotation is avoided. When the engine is started in the forward rotation mode, the engine starting performance can be improved.
Claims (5)
1. An engine start control method is characterized in that: during the reverse rotation of the motor, the engine rotates along with the motor in the reverse direction, and oil injection is carried out at the time when the engine needs oil injection, wherein the oil injection is carried out by the oil injection amount which is n1 times of the oil injection amount during the forward rotation, and n1 is a coefficient which is larger than 0 and smaller than 1.
2. The engine start control method according to claim 1, characterized in that: during the reverse rotation of the motor, the ignition energy is n2 times the normal ignition energy, and n2 is a coefficient greater than 0 and less than 1.
3. The engine start control method according to claim 1 or 2, characterized in that: the motor is a starting and power generating integrated machine.
4. The engine start control method according to claim 3, characterized in that: the engine rotates in reverse before rotating in forward direction.
5. The engine start control method according to claim 3, characterized in that: the engine comprises a motor control device for driving the motor to rotate and controlling the motor to generate power, an oil injection control device for injecting specified oil quantity at specified time and an ignition control device for igniting at specified time.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910654034.5A CN110425071B (en) | 2019-07-19 | 2019-07-19 | Engine start control method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910654034.5A CN110425071B (en) | 2019-07-19 | 2019-07-19 | Engine start control method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110425071A CN110425071A (en) | 2019-11-08 |
| CN110425071B true CN110425071B (en) | 2021-06-11 |
Family
ID=68410125
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910654034.5A Active CN110425071B (en) | 2019-07-19 | 2019-07-19 | Engine start control method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110425071B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113756961A (en) * | 2021-09-16 | 2021-12-07 | 重庆隆鑫通航发动机制造有限公司 | Starting control method and system for universal aircraft engine starting integrated motor |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004027914A (en) * | 2002-06-24 | 2004-01-29 | Denso Corp | Control device for internal combustion engine |
| JP2004100616A (en) * | 2002-09-11 | 2004-04-02 | Toyota Motor Corp | Starting control device for internal combustion engine |
| CN1673510A (en) * | 2004-03-26 | 2005-09-28 | 伯斯有限公司 | Controlled starting and braking of an internal combustion engine |
| CN103147892A (en) * | 2013-02-24 | 2013-06-12 | 吉林大学 | Method for directly starting four-cylinder gasoline direct inject engine |
| CN105121241A (en) * | 2013-04-16 | 2015-12-02 | 丰田自动车株式会社 | Vehicle control device |
| EP2998546A1 (en) * | 2014-07-23 | 2016-03-23 | Yamaha Hatsudoki Kabushiki Kaisha | Engine system and saddle-type vehicle |
| CN108223153A (en) * | 2016-12-15 | 2018-06-29 | 丰田自动车株式会社 | For the start-control device of engine |
-
2019
- 2019-07-19 CN CN201910654034.5A patent/CN110425071B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004027914A (en) * | 2002-06-24 | 2004-01-29 | Denso Corp | Control device for internal combustion engine |
| JP2004100616A (en) * | 2002-09-11 | 2004-04-02 | Toyota Motor Corp | Starting control device for internal combustion engine |
| CN1673510A (en) * | 2004-03-26 | 2005-09-28 | 伯斯有限公司 | Controlled starting and braking of an internal combustion engine |
| CN103147892A (en) * | 2013-02-24 | 2013-06-12 | 吉林大学 | Method for directly starting four-cylinder gasoline direct inject engine |
| CN105121241A (en) * | 2013-04-16 | 2015-12-02 | 丰田自动车株式会社 | Vehicle control device |
| EP2998546A1 (en) * | 2014-07-23 | 2016-03-23 | Yamaha Hatsudoki Kabushiki Kaisha | Engine system and saddle-type vehicle |
| CN108223153A (en) * | 2016-12-15 | 2018-06-29 | 丰田自动车株式会社 | For the start-control device of engine |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110425071A (en) | 2019-11-08 |
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