CN115263582B - Control strategy and storage medium for limiting engine galloping - Google Patents
Control strategy and storage medium for limiting engine galloping Download PDFInfo
- Publication number
- CN115263582B CN115263582B CN202210969168.8A CN202210969168A CN115263582B CN 115263582 B CN115263582 B CN 115263582B CN 202210969168 A CN202210969168 A CN 202210969168A CN 115263582 B CN115263582 B CN 115263582B
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- Prior art keywords
- engine
- braking
- speed
- galloping
- control strategy
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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
- 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
- F02D31/00—Use of speed-sensing governors to control combustion engines, not otherwise provided for
- F02D31/001—Electric control of rotation speed
- F02D31/002—Electric control of rotation speed controlling air supply
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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
- F02D31/00—Use of speed-sensing governors to control combustion engines, not otherwise provided for
- F02D31/001—Electric control of rotation speed
- F02D31/007—Electric control of rotation speed controlling fuel supply
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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
- F02D41/008—Controlling each cylinder individually
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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
- F02D41/04—Introducing corrections for particular operating 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
- F02D9/00—Controlling engines by throttling air or fuel-and-air induction conduits or exhaust conduits
- F02D9/04—Controlling engines by throttling air or fuel-and-air induction conduits or exhaust conduits concerning exhaust conduits
- F02D9/06—Exhaust brakes
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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
Landscapes
- 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)
- Control Of Throttle Valves Provided In The Intake System Or In The Exhaust System (AREA)
Abstract
The application discloses a control strategy for limiting engine galloping braking, which is characterized in that: the method comprises the following steps: s1, setting a rated rotation speed P through a controller ECU, and acquiring current rotation speed information of an engine; s2, the controller controls the engine according to the current engine speed P 2 And the ratio Y of the rated engine speed P adopts one or more braking modes of closing a throttle valve, activating in-cylinder braking and exhausting braking; y is greater than 1.2. The application has the advantages of simple braking process, good safety and the like.
Description
Technical Field
The application relates to the technical field of engine braking, in particular to a control strategy and a storage medium for limiting engine galloping.
Background
The engine is a device for providing power for the automobile, determines the power performance, economy, stability and environmental protection of the automobile, and can be divided into a diesel engine, a gasoline engine, an electric automobile motor and a hybrid engine according to different power sources.
When the automobile runs, the phenomenon of overspeed running of the engine and galloping of the engine can occur, so that the engine is damaged, and the automobile is extremely unsafe for a user. The protection device for overspeed and galloping of the engine of the automobile in the market is almost blank at present.
The foregoing background is only for the purpose of facilitating an understanding of the principles and concepts of the application and is not necessarily in the prior art to the present application and is not intended to be used as an admission that such background is not entitled to antedate such novelty and creativity by virtue of prior application or that it is already disclosed at the date of filing of this application.
Disclosure of Invention
The application aims to provide a control strategy and a storage medium for limiting engine galloping, which are simple in braking process and good in safety.
Therefore, the application provides a control strategy and a storage medium for limiting engine galloping.
Preferably, the present application may further have the following technical features:
a control strategy for limiting engine galloping braking comprises the following steps:
s1, setting a rated rotation speed P through a controller ECU, and acquiring current rotation speed information of an engine;
s2, the controller controls the engine according to the current engine speed P 2 And the ratio Y of the rated engine speed P adopts one or more braking modes of closing a throttle valve, activating in-cylinder braking and exhausting braking; y is greater than 1.2.
Further, 1.2 < Y < 1.5.
Further, braking mode command I, e.g. current engine speed P 2 When the rated rotation speed P is greater than 1.25 times, the ECU commands fuel cut-off;
braking mode instructions II, e.g. current engine speed P 2 When the speed is larger than 1.30 times of rated rotation speed P, the braking mode instruction I is executed, and the throttle valve is instructed to be closed to 50%;
braking mode instructions III, e.g. current engine speed P 2 When the speed is larger than 1.35 times of rated speed P, executing a braking mode instruction II and simultaneously instructing to close a throttle valve to 100%;
braking mode command IV, e.g. current engine speed P 2 When the brake mode command III is executed and in-cylinder braking and exhaust braking are activated at the same time when the brake mode command III is larger than 1.40 times the rated rotation speed P.
Further, in braking mode command I, e.g. current engine speed P 2 The throttle valve is gradually closed from 0% to 50% between 1.25 and 1.30 times of rated rotation speed.
Further, in braking mode command II, e.g. current engine speed P 2 The throttle valve is gradually closed from 50% to 100% between 1.30 and 1.35 times of rated rotation speed.
A computer readable storage medium storing a computer program or instructions that when run on a computer performs the limited engine galloping brake control strategy of claim 1.
Compared with the prior art, the application has the beneficial effects that: the throttle valve is used for matching with in-cylinder braking and exhaust braking, the braking effect is gradually increased, the working state of the engine is effectively controlled, and galloping is prevented.
Drawings
Fig. 1 is a control strategy trigger condition diagram of the present application.
Fig. 2 is a control flow diagram of the present application.
Detailed Description
The application will be described in further detail with reference to the following detailed description and with reference to the accompanying drawings. It should be emphasized that the following description is merely exemplary in nature and is in no way intended to limit the scope of the application or its applications.
Non-limiting and non-exclusive embodiments will be described with reference to the following drawings, in which like reference numerals refer to like elements unless otherwise specified.
The engine galloping limiting brake control strategy shown in fig. 1-2 comprises the following steps:
s1, setting a rated rotation speed P through a controller ECU, and acquiring current rotation speed information of an engine;
s2, the controller controls the engine according to the current engine speed P 2 And the ratio Y of the rated engine speed P adopts one or more braking modes of closing a throttle valve, activating in-cylinder braking and exhausting braking; y is greater than 1.2 (i.e. P 2 > 1.2P), preferably 1.2 < Y < 1.5. The specific value of the rated rotation speed P is specifically calibrated according to different engines.
Specifically, the braking mode command I of the engine galloping brake control strategy is limited, such as the current engine speed P 2 When the rated rotation speed P is greater than 1.25 times, the ECU commands fuel cut-off;
the braking mode instruction II of the control strategy for limiting engine galloping braking, such as the current engine speed P 2 When the speed is greater than 1.30 times rated speed P, the braking mode instruction I is executed, and the throttle valve is instructed to be closed to 50%, or the throttle valve is gradually closed from 0% to 50% between 1.25 and 1.30 times rated speed, and the throttle valve is optionally controlled to be at the current engine speed P 2 When the speed is 1.25-1.30 times of the rated rotation speed P, the throttle valve is closed from 0% to 50% at a constant speed.
The braking mode instruction III of the control strategy of limiting engine galloping braking, such as the current engine speed P 2 When the speed is greater than 1.35 times of rated speed P, executing a braking mode instruction II and simultaneously commanding the throttle valve to be closed to 100 percent, or gradually closing the throttle valve from 50 percent to 100 percent between 1.30 and 1.35 times of rated speed P; optionally, e.g. current engine speed P 2 When the speed is 1.30-1.35 times of the rated rotation speed P, the throttle valve is closed from 50% to 100% at a constant speed.
The braking mode command IV of the control strategy of limiting engine galloping braking, such as the current engine speed P 2 When the brake mode command III is executed and in-cylinder braking and exhaust braking are activated at the same time when the brake mode command III is larger than 1.40 times the rated rotation speed P.
When the current engine speed P acquired by the controller 2 And when the ratio Y of the rated engine speed P is less than 1.2, the engine galloping brake control strategy is exited.
A computer-readable storage medium, characterized by: for storing a computer program or instructions that when run on a computer performs the limited engine galloping brake control strategy described above.
Those skilled in the art will recognize that numerous variations are possible in light of the above description, and that the examples and figures are presented for the purpose of describing one or more particular embodiments only.
While there have been described and illustrated what are considered to be example embodiments of the present application, it will be understood by those skilled in the art that various changes and substitutions can be made therein without departing from the spirit of the application. In addition, many modifications may be made to adapt a particular situation to the teachings of the application without departing from the central concept thereof as described herein. Therefore, it is intended that the application not be limited to the particular embodiment disclosed, but that the application will include all embodiments falling within the scope of the application and equivalents thereof.
Claims (5)
1. A limited engine galloping brake control strategy, characterized by: the method comprises the following steps:
s1, setting a rated rotation speed P through a controller ECU, and acquiring current rotation speed information of an engine;
s2, the controller controls the engine according to the current engine speed P 2 And the ratio Y of the rated engine speed P adopts one or more braking modes of closing a throttle valve, activating in-cylinder braking and exhausting braking; y is greater than 1.2;
braking mode command I, e.g. current engine speed P 2 When the rated rotation speed P is greater than 1.25 times, the ECU commands fuel cut-off;
braking mode instructions II, e.g. current engine speed P 2 When the speed is larger than 1.30 times of rated rotation speed P, the braking mode instruction I is executed, and the throttle valve is instructed to be closed to 50%;
braking mode instructions III, e.g. current engine speed P 2 When the speed is larger than 1.35 times of rated speed P, executing a braking mode instruction II and simultaneously instructing to close a throttle valve to 100%;
braking mode command IV, e.g. current engine speed P 2 When the brake mode command III is executed and in-cylinder braking and exhaust braking are activated at the same time when the brake mode command III is larger than 1.40 times the rated rotation speed P.
2. A limited engine galloping brake control strategy as recited in claim 1, wherein: y is more than 1.2 and less than 1.5.
3. A limited engine galloping brake control strategy as recited in claim 1, wherein: such as the current engine speed P 2 The throttle valve is gradually closed from 0% to 50% between 1.25 and 1.30 times of rated rotation speed.
4. A limited engine galloping brake control strategy as recited in claim 1, wherein: such asCurrent engine speed P 2 The throttle valve is gradually closed from 50% to 100% between 1.30 and 1.35 times of rated rotation speed.
5. A computer-readable storage medium, characterized by: for storing a computer program or instructions that when run on a computer performs the limited engine galloping brake control strategy of claim 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210969168.8A CN115263582B (en) | 2022-08-12 | 2022-08-12 | Control strategy and storage medium for limiting engine galloping |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210969168.8A CN115263582B (en) | 2022-08-12 | 2022-08-12 | Control strategy and storage medium for limiting engine galloping |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN115263582A CN115263582A (en) | 2022-11-01 |
| CN115263582B true CN115263582B (en) | 2023-09-22 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210969168.8A Active CN115263582B (en) | 2022-08-12 | 2022-08-12 | Control strategy and storage medium for limiting engine galloping |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102182562A (en) * | 2011-02-01 | 2011-09-14 | 潍柴动力股份有限公司 | Diesel engine slippage protecting equipment, method and system |
| CN104153892A (en) * | 2014-05-16 | 2014-11-19 | 玉柴联合动力股份有限公司 | Integrated diesel engine capable of braking inside cylinder forced by external controller |
| CN105041568A (en) * | 2015-08-28 | 2015-11-11 | 沈阳华创风能有限公司 | Control method for preventing fan galloping |
| CN112879168A (en) * | 2021-01-26 | 2021-06-01 | 三一汽车起重机械有限公司 | Engine overspeed protection control method, control device and vehicle |
| CN113047966A (en) * | 2021-03-04 | 2021-06-29 | 广西玉柴机器股份有限公司 | Method and system for adjusting braking power in engine cylinder and related device |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6993426B2 (en) * | 2003-07-14 | 2006-01-31 | Detroit Diesel Corporation | Method of engine overspeed protection by inhibiting operator throttle input |
| US8738248B2 (en) * | 2008-10-21 | 2014-05-27 | Allison Transmission, Inc. | System for controlling vehicle overspeeding via control of one or more exhaust brake devices |
-
2022
- 2022-08-12 CN CN202210969168.8A patent/CN115263582B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102182562A (en) * | 2011-02-01 | 2011-09-14 | 潍柴动力股份有限公司 | Diesel engine slippage protecting equipment, method and system |
| CN104153892A (en) * | 2014-05-16 | 2014-11-19 | 玉柴联合动力股份有限公司 | Integrated diesel engine capable of braking inside cylinder forced by external controller |
| CN105041568A (en) * | 2015-08-28 | 2015-11-11 | 沈阳华创风能有限公司 | Control method for preventing fan galloping |
| CN112879168A (en) * | 2021-01-26 | 2021-06-01 | 三一汽车起重机械有限公司 | Engine overspeed protection control method, control device and vehicle |
| CN113047966A (en) * | 2021-03-04 | 2021-06-29 | 广西玉柴机器股份有限公司 | Method and system for adjusting braking power in engine cylinder and related device |
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| Publication number | Publication date |
|---|---|
| CN115263582A (en) | 2022-11-01 |
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