CN113339152A - Rail pressure control method of high-pressure common rail diesel engine - Google Patents
Rail pressure control method of high-pressure common rail diesel engine Download PDFInfo
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- CN113339152A CN113339152A CN202110681391.8A CN202110681391A CN113339152A CN 113339152 A CN113339152 A CN 113339152A CN 202110681391 A CN202110681391 A CN 202110681391A CN 113339152 A CN113339152 A CN 113339152A
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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
- F02D41/30—Controlling fuel injection
- F02D41/38—Controlling fuel injection of the high pressure type
- F02D41/3809—Common rail control systems
- F02D41/3836—Controlling the fuel 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
- 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
- F02D41/1401—Introducing closed-loop corrections characterised by the control or regulation method
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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
- F02D41/24—Electrical control of supply of combustible mixture or its constituents characterised by the use of digital means
- F02D41/2406—Electrical control of supply of combustible mixture or its constituents characterised by the use of digital means using essentially read only memories
- F02D41/2425—Particular ways of programming the data
- F02D41/2429—Methods of calibrating or learning
- F02D41/2451—Methods of calibrating or learning characterised by what is learned or calibrated
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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
- F02D41/30—Controlling fuel injection
- F02D41/38—Controlling fuel injection of the high pressure type
- F02D41/3809—Common rail control systems
- F02D41/3827—Common rail control systems for diesel 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
- 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
- F02D41/1401—Introducing closed-loop corrections characterised by the control or regulation method
- F02D2041/1409—Introducing closed-loop corrections characterised by the control or regulation method using at least a proportional, integral or derivative controller
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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
- F02D41/1401—Introducing closed-loop corrections characterised by the control or regulation method
- F02D2041/141—Introducing closed-loop corrections characterised by the control or regulation method using a feed-forward control element
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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
- F02D2200/06—Fuel or fuel supply system parameters
- F02D2200/0606—Fuel temperature
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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
- F02D2200/06—Fuel or fuel supply system parameters
- F02D2200/0614—Actual fuel mass or fuel injection amount
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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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- 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
- F02D2200/70—Input parameters for engine control said parameters being related to the vehicle exterior
- F02D2200/703—Atmospheric pressure
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Electrical Control Of Air Or Fuel Supplied To Internal-Combustion Engine (AREA)
- Fuel-Injection Apparatus (AREA)
Abstract
The invention provides a rail pressure control method of a high-pressure common rail diesel engine, which comprises the following steps: according to different working conditions of the diesel engine, determining a rail pressure control strategy of the high-pressure common-rail diesel engine as follows: if the engine is started, open-loop feedforward control is adopted, namely a proportional valve connected with the high-pressure pump is controlled not to be electrified, and the valve is completely opened; if the working condition is the working condition after starting, closed-loop rail pressure fuzzy self-adaptive PID control is adopted, namely, the proportional valve is electrified, and the opening of the proportional valve is controlled, so that the rail pressure is stabilized within a certain error range of the target value of the rail pressure; specifically, a rail pressure target value is calculated according to the operation condition, the current oil injection quantity and the engine rotating speed information; and then inputting the rail pressure target value, the current rail pressure actual value and the circulating fuel injection quantity information into a rail pressure controller for comparison, and controlling the opening of the proportional valve through a deviation signal. The invention realizes better effects of responsiveness and followability when the target rail pressure suddenly changes and stability of the rail pressure under a stable working condition.
Description
Technical Field
The invention belongs to the technical field of diesel engine control, and particularly relates to a rail pressure control method of a high-pressure common rail diesel engine.
Background
The high-pressure common rail electric control system can control the common rail pressure of the diesel engine, and accurately control the control of circulating fuel injection quantity, fuel injection timing and the like, so that the economy, the dynamic property and the like of the diesel engine are obviously improved. The rail pressure control is the core part of a control strategy of the high-pressure common rail system and mainly comprises rail pressure responsiveness and rail pressure stability.
The rail pressure responsiveness control means that the diesel engine can quickly establish high pressure when starting, and the rail pressure can quickly follow the target pressure when the working condition is switched; the rail pressure stability means that the diesel engine keeps the actual rail pressure stable around a target value, namely the rail pressure fluctuation is as small as possible when the diesel engine injects and pumps oil each time. The problem in the prior art is that the responsiveness and the following performance when the target rail pressure changes suddenly and the effect of the stability of the rail pressure under the stable working condition are all to be improved.
Disclosure of Invention
In view of this, the present invention is directed to a rail pressure control method for a high-pressure common rail diesel engine, so as to achieve a better rail pressure control effect.
In order to achieve the purpose, the technical scheme of the invention is realized as follows:
a rail pressure control method of a high-pressure common rail diesel engine comprises the following steps: according to different working conditions of the diesel engine, determining a rail pressure control strategy of the high-pressure common-rail diesel engine as follows:
if the engine is started, open-loop feedforward control is adopted, namely a proportional valve connected with the high-pressure pump is controlled not to be electrified, and the valve is completely opened;
if the working condition is the working condition after starting, closed-loop rail pressure fuzzy self-adaptive PID control is adopted, namely, the proportional valve is electrified, and the opening of the proportional valve is controlled, so that the rail pressure is stabilized within a certain error range of the target value of the rail pressure; specifically, a rail pressure target value is calculated according to the operation condition, the current oil injection quantity and the engine rotating speed information; and then inputting the rail pressure target value, the current rail pressure actual value and the circulating fuel injection quantity information into a rail pressure controller for comparison, and controlling the opening of the proportional valve through a deviation signal.
Further, the rail pressure target value obtaining method comprises the following steps:
acquiring the sum of the rail pressure basic value and the environmental correction value, and comparing the sum with a preset target rail pressure maximum value to obtain a final rail pressure target value; the rail pressure basic value is obtained by the ECU according to the engine speed and the current fuel injection quantity query map; the environment correction value is obtained by calculation according to the fuel temperature, the atmospheric pressure, the atmospheric temperature and the cooling water temperature.
Further, the rail pressure feedforward control oil quantity of the feedforward control comprises a common rail pressure feedforward control basic value and a system leakage oil quantity, the rail pressure feedforward control oil quantity is obtained by a current circulating oil injection quantity query map, and the system leakage oil quantity is obtained by a rail pressure target value query map.
Further, the rail pressure fuzzy self-adaptive PID control is a two-input and three-output structure, the input is the rail pressure deviation E and the rail pressure deviation change rate Ec, and the output is 3 control parameters Kp, Ki and Kd of the PID controller; the discourse domain of the input quantity E and Ec is set as [0,8], and during fuzzification processing, a bell-shaped membership function is adopted in the area with the largest error, and a triangular membership function is adopted in the area with the small error; the fuzzy resolving processing of the output parameters adopts a weighted average method, as shown in formula 1;
in the formula, X0Is an average; xi(i ═ 1,2, …, n) is an element in discourse C; mu.sM(Xi) is degree of membership.
Compared with the prior art, the invention has the following advantages:
the method has better effects on the responsiveness and the following performance of the target rail pressure during sudden change and the stability of the rail pressure under the stable working condition.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate an embodiment of the invention and, together with the description, serve to explain the invention and not to limit the invention. In the drawings:
FIG. 1 is a flow chart of rail pressure control according to an embodiment of the present invention;
FIG. 2 is an example of a target rail pressure maximum map of an embodiment of the present invention;
FIG. 3 is an example of a target rail pressure basic value map according to an embodiment of the present invention;
FIG. 4 is an example of a rail pressure feedforward control fuel injection quantity query map according to an embodiment of the invention;
FIG. 5 is an example of a leak oil amount query map according to an embodiment of the present invention;
FIG. 6 is a diagram of rail print fuzzy adaptive PID control logic according to an embodiment of the invention.
Detailed Description
It should be noted that the embodiments and features of the embodiments may be combined with each other without conflict.
The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings.
The invention provides a rail pressure control method of a high-pressure common rail diesel engine, which comprises the following steps:
determining a rail pressure control strategy of the high-pressure common-rail diesel engine according to different working conditions of the diesel engine:
the starting working condition of the engine adopts open-loop control;
the working condition after starting adopts closed-loop control.
Specifically, in the initial stage of engine starting, the engine speed is low, the pressure in the common rail pipe is low, and an open-loop control strategy is adopted for quickly starting the engine. Namely, the proportional valve connected with the high-pressure pump is controlled not to be electrified, and the valve is completely opened, so that the common rail pipe is quickly filled with high-pressure oil;
the post-start condition, i.e. when the rail pressure approaches the start target value, is changed to closed-loop control. At the moment, the proportional valve is electrified, the opening of the proportional valve is controlled, the rail pressure is stabilized near the target value, and the accuracy and the stability of the control system are improved. After normal starting, a closed-loop control strategy is adopted.
The rail pressure closed-loop control flow is shown in fig. 1, and firstly, a rail pressure target value is calculated according to information such as the operation condition, the current oil injection quantity and the engine rotating speed; and then, inputting the rail pressure target value, the current rail pressure actual value, the circulating fuel injection quantity and other information into a rail pressure controller for comparison, controlling the opening of the proportional valve through a deviation signal, and finally realizing the stability control of the rail pressure.
Calculating a rail pressure target value:
the closed-loop rail pressure target value comprises a rail pressure basic value and an environment correction value, when calculating, the ECU inquires a map according to the rotating speed of the engine and the current fuel injection quantity to obtain a rail pressure maximum limit value and a rail pressure basic value, and then correction is carried out according to the fuel temperature, the atmospheric pressure, the atmospheric temperature, the cooling water temperature and the like; and adding the rail pressure basic value and the environment correction value, and comparing the rail pressure basic value and the environment correction value with a preset limit value to obtain a rail pressure target value. The maximum value of the rail pressure target value and the rail pressure basic value map are shown in fig. 2 and 3, respectively.
Wherein, the feed-forward control:
and a feed-forward strategy is adopted in the initial starting period of the engine, and the rail pressure feed-forward control oil quantity comprises a common rail pressure feed-forward control basic value and system leakage oil quantity. The rail pressure feedforward control oil quantity is obtained by inquiring a map of the current circulating oil injection quantity, and is shown in figure 4; the amount of leakage oil (primarily injector leakage) is corrected by looking up a map from the rail pressure target (as shown in fig. 5) and taking into account the fuel temperature.
Wherein, closed-loop control:
the rail pressure fuzzy self-adaptive PID control is a two-input and three-output structure, the input is rail pressure deviation E and rail pressure deviation change rate Ec, and the output is 3 control parameters Kp, Ki and Kd of a PID controller. As shown in fig. 6.
The discourse domain of the input quantity E and Ec is set as [0,8], and during fuzzification processing, a bell-shaped membership function is adopted in the area with the largest error, and a triangular membership function is adopted in the area with the smaller error. The fuzzy resolving processing of the output parameters adopts a weighted average method, and is shown as formula 1.
In the formula, X0Is an average; xi(i ═ 1,2, …, n) is an element in discourse C; mu.sM(Xi) is degree of membership.
The invention provides a rail pressure control strategy of a high-pressure common rail diesel engine, which is characterized in that fuel is conveyed to a common oil pipe by controlling a high-pressure pump, and the fuel is supplied to each fuel injector regularly and quantitatively by the pressure in the common oil pipe.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (4)
1. A rail pressure control method of a high-pressure common rail diesel engine is characterized by comprising the following steps:
according to different working conditions of the diesel engine, determining a rail pressure control strategy of the high-pressure common-rail diesel engine as follows:
if the engine is started, open-loop feedforward control is adopted, namely a proportional valve connected with the high-pressure pump is controlled not to be electrified, and the valve is completely opened;
if the working condition is the working condition after starting, closed-loop rail pressure fuzzy self-adaptive PID control is adopted, namely, the proportional valve is electrified, and the opening of the proportional valve is controlled, so that the rail pressure is stabilized within a certain error range of the target value of the rail pressure; specifically, a rail pressure target value is calculated according to the operation condition, the current oil injection quantity and the engine rotating speed information; and then inputting the rail pressure target value, the current rail pressure actual value and the circulating fuel injection quantity information into a rail pressure controller for comparison, and controlling the opening of the proportional valve through a deviation signal.
2. The method of claim 1, wherein: the method for acquiring the rail pressure target value comprises the following steps:
acquiring the sum of the rail pressure basic value and the environmental correction value, and comparing the sum with a preset target rail pressure maximum value to obtain a final rail pressure target value;
the rail pressure basic value is obtained by the ECU according to the engine speed and the current fuel injection quantity query map; the environment correction value is obtained by calculation according to the fuel temperature, the atmospheric pressure, the atmospheric temperature and the cooling water temperature.
3. The method of claim 1, wherein: the rail pressure feedforward control oil quantity of the feedforward control comprises a common rail pressure feedforward control basic value and a system leakage oil quantity, the rail pressure feedforward control oil quantity is obtained by a current circulating oil injection quantity query map, and the system leakage oil quantity is obtained by a rail pressure target value query map.
4. The method of claim 1, wherein: the track pressure fuzzy self-adaptive PID control is of a two-input and three-output structure, the input is track pressure deviation E and track pressure deviation change rate Ec, and the output is 3 control parameters Kp, Ki and Kd of a PID controller;
the discourse domain of the input quantity E and Ec is set as [0,8], and during fuzzification processing, a bell-shaped membership function is adopted in the area with the largest error, and a triangular membership function is adopted in the area with the small error; the fuzzy resolving processing of the output parameters adopts a weighted average method, as shown in formula 1;
in the formula, X0Is an average; xi(i ═ 1,2, …, n) is an element in discourse C; mu.sM(Xi) is degree of membership.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114508431A (en) * | 2022-03-11 | 2022-05-17 | 中电科（宁波）海洋电子研究院有限公司 | Control method of ship host remote control system |
| CN115234381A (en) * | 2022-07-29 | 2022-10-25 | 无锡威孚高科技集团股份有限公司 | Rail pressure control method and control system for variable valve of engine |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1061254A2 (en) * | 1999-06-15 | 2000-12-20 | Isuzu Motors Limited | Common-rail fuel-injection system |
| EP1529948A2 (en) * | 2003-11-07 | 2005-05-11 | Volkswagen Aktiengesellschaft | Pre-controlling process of a variable lift fuel pump in an Internal combustion engine |
| WO2012035889A1 (en) * | 2010-09-17 | 2012-03-22 | ボッシュ株式会社 | Control unit for control member, pressure control unit, egr control unit, and boost pressure control unit |
| WO2012142744A1 (en) * | 2011-04-19 | 2012-10-26 | 潍柴动力股份有限公司 | Device and method for controlling high-pressure common-rail system of diesel engine |
| CN106342118B (en) * | 2009-06-02 | 2013-03-13 | 中国兵器工业集团第七○研究所 | Diesel engine rail pressure control control method |
| US20140034022A1 (en) * | 2011-04-19 | 2014-02-06 | Weichai Power Co., Ltd. | Apparatus and method for controlling rail pressure of high-pressure common-rail tube cavity of high-pressure common-rail fuel system of engine |
-
2021
- 2021-06-18 CN CN202110681391.8A patent/CN113339152B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1061254A2 (en) * | 1999-06-15 | 2000-12-20 | Isuzu Motors Limited | Common-rail fuel-injection system |
| EP1529948A2 (en) * | 2003-11-07 | 2005-05-11 | Volkswagen Aktiengesellschaft | Pre-controlling process of a variable lift fuel pump in an Internal combustion engine |
| CN106342118B (en) * | 2009-06-02 | 2013-03-13 | 中国兵器工业集团第七○研究所 | Diesel engine rail pressure control control method |
| WO2012035889A1 (en) * | 2010-09-17 | 2012-03-22 | ボッシュ株式会社 | Control unit for control member, pressure control unit, egr control unit, and boost pressure control unit |
| WO2012142744A1 (en) * | 2011-04-19 | 2012-10-26 | 潍柴动力股份有限公司 | Device and method for controlling high-pressure common-rail system of diesel engine |
| US20140034022A1 (en) * | 2011-04-19 | 2014-02-06 | Weichai Power Co., Ltd. | Apparatus and method for controlling rail pressure of high-pressure common-rail tube cavity of high-pressure common-rail fuel system of engine |
| US20140041634A1 (en) * | 2011-04-19 | 2014-02-13 | Weichai Power Co., Ltd. | Device and method for controlling high-pressure common-rail system of diesel engine |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114508431A (en) * | 2022-03-11 | 2022-05-17 | 中电科（宁波）海洋电子研究院有限公司 | Control method of ship host remote control system |
| CN114508431B (en) * | 2022-03-11 | 2022-12-27 | 中电科（宁波）海洋电子研究院有限公司 | Control method of ship host remote control system |
| CN115234381A (en) * | 2022-07-29 | 2022-10-25 | 无锡威孚高科技集团股份有限公司 | Rail pressure control method and control system for variable valve of engine |
| CN115234381B (en) * | 2022-07-29 | 2024-04-16 | 无锡威孚高科技集团股份有限公司 | Rail pressure control method and control system for variable valve of engine |
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