CN114033570A - Common rail diesel engine rail pressure control method and system, common rail diesel engine and storage medium - Google Patents
Common rail diesel engine rail pressure control method and system, common rail diesel engine and storage medium Download PDFInfo
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- CN114033570A CN114033570A CN202111428477.6A CN202111428477A CN114033570A CN 114033570 A CN114033570 A CN 114033570A CN 202111428477 A CN202111428477 A CN 202111428477A CN 114033570 A CN114033570 A CN 114033570A
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- 238000000034 method Methods 0.000 title claims abstract description 42
- 238000002347 injection Methods 0.000 claims abstract description 74
- 239000007924 injection Substances 0.000 claims abstract description 74
- 238000005086 pumping Methods 0.000 claims abstract description 5
- 238000011217 control strategy Methods 0.000 claims description 5
- 238000005457 optimization Methods 0.000 abstract description 7
- 239000000446 fuel Substances 0.000 description 8
- 238000004364 calculation method Methods 0.000 description 2
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000001052 transient effect Effects 0.000 description 2
- 238000013528 artificial neural network Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000010349 pulsation Effects 0.000 description 1
- 239000010902 straw Substances 0.000 description 1
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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
-
- 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
-
- 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
- F02D41/3845—Controlling the fuel pressure by controlling the flow into the common rail, e.g. the amount of fuel pumped
-
- 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
-
- 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
- F02D2041/1433—Introducing closed-loop corrections characterised by the control or regulation method using a model or simulation of the system
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/40—Engine management systems
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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 discloses a rail pressure control method and a rail pressure control system for a common rail diesel engine, the common rail diesel engine and a storage medium, wherein the rail pressure control method comprises the following steps: high-pressure oil pump model: according to the structure of the high-pressure oil pump, the characteristics of pulse type oil pumping of the plunger pump and the characteristics of an oil inlet proportional valve, establishing an oil supply rule model of the high-pressure oil pump to find out the change relation between the oil outlet flow and the pressure of the high-pressure oil pump; oil injection characteristic model: establishing a common rail pipe oil outlet rule characteristic model according to external requirements of the diesel engine such as rotating speed, torque and the like and basic parameters of the diesel engine; the common rail oil mass balance model: according to the oil inlet rule and the oil outlet rule of the common rail pipe in the oil mass balance method, the influence of the disturbance of the system on rail pressure can be counteracted as much as possible by phase balance, and the rail pressure fluctuation is controlled by adjusting the oil inlet rule of the common rail pipe to adapt to the change of the oil outlet quantity of the common rail pipe. The invention solves the problem of rail pressure fluctuation caused by the system in the rail pressure control process which can not be realized by parameter optimization by most rail pressure control algorithms.
Description
Technical Field
The invention belongs to the technical field of diesel engine control, and particularly relates to a rail pressure control method and system for a common rail diesel engine, the common rail diesel engine and a storage medium.
Background
Common rail diesel engines are the main direction of current research, and are widely used by various diesel engine manufacturers with efficient and stable injection pressure, flexible injection phase and accurate injection quantity, but the performance of independently researched and developed common rail diesel engines is uneven, and the rail pressure stability is the key of the control technology of the common rail diesel engines, and influences the overall performance of the diesel engines. Under the influence of severe emission requirements and a new energy crisis, two development directions of a high-power diesel engine are formed by adopting new energy and optimizing the performance of the diesel engine, and the rail pressure stability is controlled into the last life-saving straw for improving the performance of the diesel engine.
The research of the rail pressure control strategy mostly takes closed-loop control as a research and optimization target, various algorithms such as PID optimization, a neural network, a sliding mode, an ant colony, heredity and the like are applied to realize the closed-loop tracking of the rail pressure, advanced theories and algorithms are not discussed to meet the high requirements of the CPU computing capacity, and the algorithms cannot fundamentally solve the coupling relation between the rail pressure control and the fuel injection quantity. Due to the particularity of oil supply of the high-pressure oil pump and the characteristic of multi-cylinder distributed oil injection, pulse type fluctuation is inevitably generated in the working process of the diesel engine, the inherent fluctuation cannot be eliminated, and the closed-loop control effect is influenced, so that the optimization range of closed-loop control parameters becomes narrow and sensitive, and the stability of rail pressure control is influenced.
Therefore, it is necessary to develop a new rail pressure control method and system for common rail diesel engine, common rail diesel engine and storage medium.
Disclosure of Invention
The invention aims to provide a rail pressure control method and system for a common rail diesel engine, the common rail diesel engine and a storage medium, which realize the decoupling of rail pressure control by an oil mass balance method.
In a first aspect, the rail pressure control method for the common rail diesel engine comprises the following steps:
establishing a high-pressure oil pump model M2, and calculating an oil supply characteristic curve P2 through the high-pressure oil pump model M2, wherein the oil supply characteristic curve P2 is the variation relation between the oil outlet flow and the pressure of the high-pressure oil pump;
establishing an oil injection characteristic model M1, inputting the rotating speed and the torque demand of the diesel engine and the parameters of the diesel engine into the oil injection characteristic model M1, and calculating an oil injection characteristic curve P1, wherein the oil injection characteristic curve P1 is the change relation of the oil injection frequency, the oil injection quantity, the whole oil quantity and the pressure;
establishing a common rail pipe oil mass balance model M3, inputting the common rail pipe oil mass balance model M3 according to an oil injection characteristic curve P1 and an oil supply characteristic curve P2, calculating a rail pressure stable condition quantity, and adjusting the opening E1 of an oil pump oil inlet proportional valve through a rail pressure controller C1 on the basis of the rail pressure stable condition quantity, a target rail pressure T1 and a rail pressure R1, namely adjusting the oil inlet quantity of the common rail pipe to balance the oil inlet and outlet quantity in the common rail pipe.
Optionally, a high-pressure oil pump model M2 is established according to a high-pressure oil pump oil supply cam profile, a plunger structure, a plunger pump pulse type oil pumping characteristic and a regulation characteristic of a high-pressure oil pump oil inlet proportional valve, where the high-pressure oil pump model M2 shows a variation relation between an oil outlet flow and a pressure of the high-pressure oil pump.
Optionally, the parameters of the diesel engine include cylinder number, stroke, ignition timing and injection phase.
Optionally, the high-pressure oil pump is a radial or axial plunger pump, and the oil supply characteristic is pulse type pump oil, and the oil is supplied intermittently in the working cycle period.
Optionally, the oil injection time and the oil injection phase of the electric control oil injector in the oil injection characteristic model are controlled by an electric control unit, the electric control unit outputs oil injection information according to an oil injection control strategy of the diesel engine, and the oil injection characteristic is directly obtained by the control unit.
Alternatively, adjusting the fuel delivery based on system hysteresis advances the fuel delivery before injection, and feed forward improves the fluctuation.
Optionally, the fluctuation is improved according to the method that the peaks and valleys of the signal fluctuation characteristics are balanced.
In a second aspect, the rail pressure control system of the common rail diesel engine according to the present invention includes a memory and a controller, where the memory stores a computer readable program, and the computer readable program, when called by the controller, can execute the steps of the rail pressure control method of the common rail diesel engine according to the present invention.
In a third aspect, the common rail diesel engine according to the present invention employs the rail pressure control system of the common rail diesel engine according to the present invention.
In a fourth aspect, the storage medium of the present invention stores therein a computer readable program, which when invoked by a controller, is capable of executing the steps of the common rail diesel rail pressure control method according to the present invention.
The invention has the following advantages: the invention relates to a decoupling method for rail pressure control of a common rail diesel engine, which realizes the decoupling of the rail pressure control by an oil mass balance method and specifically comprises a high-pressure oil pump model: according to the structure of the high-pressure oil pump, the characteristics of pulse type oil pumping of the plunger pump and the characteristics of an oil inlet proportional valve, establishing an oil supply rule model of the high-pressure oil pump to find out the change relation between the oil outlet flow and the pressure of the high-pressure oil pump; oil injection characteristic model: calculating oil injection frequency and oil injection quantity according to external requirements of the diesel engine such as rotating speed, torque and the like and basic parameters of the diesel engine such as cylinder number, stroke and the like, and establishing a common rail pipe oil outlet rule characteristic model; the common rail oil mass balance model: according to the oil quantity balance method, the influence of the disturbance of the system on the rail pressure can be counteracted as much as possible by balancing the oil inlet rule and the oil outlet rule of the common rail pipe, the rail pressure fluctuation is controlled by adjusting the oil inlet rule of the common rail pipe to adapt to the change of the oil outlet quantity of the common rail pipe, and in addition, the delay of the system is calculated according to actual conditions, the advance oil supply of the common rail pipe can be carried out before the oil injection requirement, and the rail pressure fluctuation which is about to occur is directly resisted, so that the feedforward control is realized, and the delay fluctuation is improved. The method can improve the stability of rail pressure control under the condition that the original control algorithm is not changed, and solves the problem that most rail pressure control algorithms cannot realize rail pressure fluctuation caused by a system in the rail pressure control process through parameter optimization.
Drawings
FIG. 1 is a flow chart of a conventional rail pressure closed-loop control method;
FIG. 2 is a schematic diagram of the decoupling of the rail pressure control in the present embodiment;
fig. 3 is a flowchart of rail pressure control in the present embodiment.
Detailed Description
The invention will be further explained with reference to the drawings.
As shown in fig. 1, for the description of the rail pressure control method of the conventional common rail diesel engine, due to the particularity of the oil supply of the high-pressure oil pump and the characteristics of multi-cylinder distributed oil injection, pulse fluctuations are inevitably generated in the working process of the diesel engine, and the inherent fluctuations cannot be eliminated, and the closed-loop control effect is influenced, so that the optimization range of the closed-loop control parameters becomes narrow and sensitive, thereby influencing the stability of the rail pressure control.
As shown in fig. 2, in this embodiment, in the rail pressure control method of the common rail diesel engine, decoupling of rail pressure control is realized by an oil mass balance method, and development and optimization of a rail pressure control algorithm of a 4-20 cylinder common rail diesel engine can be satisfied, and the control method specifically includes:
(1) establishing a high-pressure oil pump model M2, namely designing an oil inlet rule of a common rail pipe, establishing a high-pressure oil pump model M2 according to the molded line of an oil supply cam of the high-pressure oil pump, a plunger structure, the pulse type oil pumping characteristic of a plunger pump and the adjusting characteristic of an oil inlet proportional valve of the high-pressure oil pump, and calculating an oil supply characteristic curve P2 through the high-pressure oil pump model M2, wherein the oil supply characteristic curve P2 is the change relation between the oil outlet flow and the pressure of the high-pressure oil pump.
(2) And establishing an oil injection characteristic model M1, namely designing an oil outlet rule of the common rail pipe, and calculating the relation among the frequency of oil injection, the oil injection quantity, the whole oil quantity and the pressure change according to external requirements such as the rotating speed and the torque of the diesel engine and basic parameters of the diesel engine, such as the cylinder number, the stroke, the ignition time sequence, the oil injection phase and the like. Inputting the rotating speed and torque requirement of the diesel engine and the parameters of the diesel engine into an oil injection characteristic model M1, and calculating an oil injection characteristic curve P1, wherein the oil injection characteristic curve P1 is the change relation of the oil injection frequency, the oil injection quantity, the whole oil quantity and the pressure;
(3) establishing a common rail pipe oil mass balance model M3, inputting the common rail pipe oil mass balance model M3 according to an oil injection characteristic curve P1 and an oil supply characteristic curve P2, calculating a rail pressure stable condition quantity, and adjusting the opening E1 of an oil pump oil inlet proportional valve through a rail pressure controller C1 on the basis of the rail pressure stable condition quantity, a target rail pressure T1 and a rail pressure R1, namely adjusting the oil inlet quantity of the common rail pipe to balance the oil inlet and outlet quantity in the common rail pipe.
In this embodiment, the common rail oil quantity balance model M3 can offset the influence of the disturbance of the system itself on the rail pressure according to the oil quantity balance method common rail oil inlet rule and the oil outlet rule in phase balance as much as possible, and controls the rail pressure fluctuation by adjusting the oil inlet rule of the common rail pipe to adapt to the change of the oil outlet quantity of the common rail pipe. In addition, the hysteresis of the system is calculated according to actual conditions, the advanced oil supply of the common rail pipe can be carried out before the oil injection requirement, and the rail pressure fluctuation which is about to occur is directly counteracted, so that the feedforward control is realized, and the hysteresis fluctuation is improved.
In this embodiment, the high-pressure oil pump is a radial or axial plunger pump, and the oil supply characteristic is pulse type pump oil, which supplies oil intermittently in a duty cycle.
In the embodiment, the oil injection time and the oil injection phase of the electric control oil injector in the oil injection characteristic model are controlled by the electric control unit, the electric control unit outputs oil injection information according to an oil injection control strategy of the diesel engine, and the oil injection characteristic is directly obtained by the control unit.
In the embodiment, the oil supply amount is adjusted according to the system delay, the oil is supplied in advance before oil injection, and the fluctuation is improved in feed-forward mode.
In the embodiment, the fluctuation is improved according to the method of offsetting the peak and the valley of the signal fluctuation characteristics.
As shown in fig. 3, the high-pressure oil pump model M2 is an intermittent oil supply in a duty cycle, and the relationship curve between the angle and the lift of the cam profile and the number of oil pump plungers and the oil supply characteristic curve P2 of the high-pressure oil pump are calculated, according to the fact that the high-pressure oil pump is an axial plunger pump and the oil supply characteristic is a pulse type pump oil. The oil injection time and the oil injection phase of the electric control oil injector in the oil injection characteristic model M1 are controlled by the electric control unit, the electric control unit outputs oil injection information according to an oil injection control strategy of the diesel engine, the oil injection characteristic is directly obtained by the control unit, and an oil injection characteristic curve P1 is obtained through calculation in an algorithm. And (3) carrying out oil mass balance calculation on the common rail pipe by the common rail pipe oil mass balance model M3 according to the output of the oil injection characteristic curve P1 and the oil supply characteristic curve P2, and balancing the oil mass in and out of the common rail pipe by adjusting the oil inlet mass of the common rail pipe (namely the opening E1 of the oil inlet proportional valve of the oil pump). The oil supply characteristic curve P2 reflects the transient change rule of the high-pressure oil pump, and the oil injection characteristic curve P1 reflects the transient change of energy transfer in the working process of the diesel engine.
In the rail pressure closed-loop control process, the tracking state between the target rail pressure T1 and the real-time rail pressure R1 is adjusted through the opening E1 of an oil inlet proportional valve of an output oil pump of a rail pressure controller C1, and the closed-loop control process comprises the coupling of the disturbance quantity of fuel injection quantity change to the rail pressure of the common rail pipe, namely the fuel injection quantity.
In the embodiment, the influence of the fuel injection quantity on rail pressure fluctuation can be removed through the output of the common rail pipe fuel quantity balance model M3, and the decoupling between rail pressure control and fuel injection quantity control is realized.
The oil supply quantity can also be adjusted in time in consideration of the influence of system delay in the common rail pipe oil quantity balance model M3 through calibration of system parameters, and the oil supply quantity of the high-pressure oil pump is adjusted in advance before oil injection is executed, so that the fluctuation of the pulsation oil injection on rail pressure is improved. M3 improves fluctuation by utilizing a peak-valley offsetting method according to the fluctuation characteristics of the P1 and P2 signals.
Claims (10)
1. A rail pressure control method of a common rail diesel engine is characterized by comprising the following steps:
establishing a high-pressure oil pump model M2, and calculating an oil supply characteristic curve P2 through the high-pressure oil pump model M2, wherein the oil supply characteristic curve P2 is the variation relation between the oil outlet flow and the pressure of the high-pressure oil pump;
establishing an oil injection characteristic model M1, inputting the rotating speed and the torque demand of the diesel engine and the parameters of the diesel engine into the oil injection characteristic model M1, and calculating an oil injection characteristic curve P1, wherein the oil injection characteristic curve P1 is the change relation of the oil injection frequency, the oil injection quantity, the whole oil quantity and the pressure;
establishing a common rail pipe oil mass balance model M3, inputting the common rail pipe oil mass balance model M3 according to an oil injection characteristic curve P1 and an oil supply characteristic curve P2, calculating a rail pressure stable condition quantity, and adjusting the opening E1 of an oil pump oil inlet proportional valve through a rail pressure controller C1 on the basis of the rail pressure stable condition quantity, a target rail pressure T1 and a rail pressure R1, namely adjusting the oil inlet quantity of the common rail pipe to balance the oil inlet and outlet quantity in the common rail pipe.
2. The common rail diesel engine rail pressure control method according to claim 1, characterized in that: according to the molded line of an oil supply cam of the high-pressure oil pump, the plunger structure, the pulse type oil pumping characteristic of the plunger pump and the adjusting characteristic of an oil inlet proportional valve of the high-pressure oil pump, a high-pressure oil pump model M2 is established, and the high-pressure oil pump model M2 shows the change relation between the oil outlet flow and the pressure of the high-pressure oil pump.
3. The common rail diesel engine rail pressure control method according to claim 1 or 2, characterized in that: the parameters of the diesel engine comprise the number of cylinders, the stroke, the ignition time sequence and the injection phase.
4. The common rail diesel engine rail pressure control method according to claim 3, characterized in that: the high-pressure oil pump is a radial or axial plunger pump, the oil supply characteristic is pulse type pump oil, and the intermittent oil supply is carried out in the working cycle period.
5. The common rail diesel engine rail pressure control method according to claim 1, 2, or 4, characterized in that: the oil injection time and the oil injection phase of the electric control oil injector in the oil injection characteristic model are controlled by the electric control unit, the electric control unit outputs oil injection information according to an oil injection control strategy of the diesel engine, and the oil injection characteristic is directly obtained by the control unit.
6. The common rail diesel engine rail pressure control method according to claim 5, characterized in that: the oil supply amount is adjusted according to the system delay, oil is supplied in advance before oil injection, and fluctuation is improved in feed-forward mode.
7. The common rail diesel engine rail pressure control method according to claim 1, 2, 4, or 6, characterized in that: and improving the fluctuation according to a method of offsetting peaks and valleys of the fluctuation characteristics of the signal.
8. The utility model provides a rail pressure control system of common rail diesel engine which characterized in that: comprising a memory and a controller, said memory having stored therein a computer readable program which, when invoked by the controller, is capable of performing the steps of the common rail diesel rail pressure control method of any of claims 1 to 7.
9. A common rail diesel engine, characterized in that: the common rail diesel rail pressure control system of claim 8 is employed.
10. A storage medium, characterized by: stored with a computer readable program which, when invoked by a controller, is able to carry out the steps of the common rail diesel rail pressure control method according to any one of claims 1 to 7.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111428477.6A CN114033570B (en) | 2021-11-26 | 2021-11-26 | Rail pressure control method and system for common rail diesel engine, common rail diesel engine and storage medium |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202111428477.6A CN114033570B (en) | 2021-11-26 | 2021-11-26 | Rail pressure control method and system for common rail diesel engine, common rail diesel engine and storage medium |
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| CN114033570A true CN114033570A (en) | 2022-02-11 |
| CN114033570B CN114033570B (en) | 2024-04-09 |
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| CN106837580A (en) * | 2017-01-25 | 2017-06-13 | 中国第汽车股份有限公司 | The accuracy control method of common rail system intermediate fuel oil emitted dose |
| CN111810309A (en) * | 2020-06-23 | 2020-10-23 | 哈尔滨工程大学 | High-pressure common rail system oil injection quantity prediction method based on closed-loop observer |
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2021
- 2021-11-26 CN CN202111428477.6A patent/CN114033570B/en active Active
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JP2012002178A (en) * | 2010-06-18 | 2012-01-05 | Denso Corp | Fuel injection state detection device |
| JP2012026323A (en) * | 2010-07-21 | 2012-02-09 | Denso Corp | Fuel injection state detecting device |
| CN202125364U (en) * | 2011-04-19 | 2012-01-25 | 潍柴动力股份有限公司 | Device of common rail system for controlling diesel motor |
| CN102562336A (en) * | 2012-02-01 | 2012-07-11 | 吉林大学 | Rail pressure control method for gasoline direct injection engine common rail fuel system |
| JP2014152674A (en) * | 2013-02-07 | 2014-08-25 | Denso Corp | Fuel injection characteristic detecting device |
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| CN106837580A (en) * | 2017-01-25 | 2017-06-13 | 中国第汽车股份有限公司 | The accuracy control method of common rail system intermediate fuel oil emitted dose |
| CN111810309A (en) * | 2020-06-23 | 2020-10-23 | 哈尔滨工程大学 | High-pressure common rail system oil injection quantity prediction method based on closed-loop observer |
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| CN114033570B (en) | 2024-04-09 |
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