CN111749802A - Method for controlling opening of fuel injector and fuel injector - Google Patents
Method for controlling opening of fuel injector and fuel injector Download PDFInfo
- Publication number
- CN111749802A CN111749802A CN201910237703.9A CN201910237703A CN111749802A CN 111749802 A CN111749802 A CN 111749802A CN 201910237703 A CN201910237703 A CN 201910237703A CN 111749802 A CN111749802 A CN 111749802A
- Authority
- CN
- China
- Prior art keywords
- needle valve
- valve assembly
- power supply
- supply unit
- electromagnetic force
- Prior art date
- 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.)
- Pending
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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
- F02D41/32—Controlling fuel injection of the low pressure type
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M51/00—Fuel-injection apparatus characterised by being operated electrically
- F02M51/06—Injectors peculiar thereto with means directly operating the valve needle
- F02M51/061—Injectors peculiar thereto with means directly operating the valve needle using electromagnetic operating means
- F02M51/0614—Injectors peculiar thereto with means directly operating the valve needle using electromagnetic operating means characterised by arrangement of electromagnets or fixed armature
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M61/00—Fuel-injectors not provided for in groups F02M39/00 - F02M57/00 or F02M67/00
- F02M61/04—Fuel-injectors not provided for in groups F02M39/00 - F02M57/00 or F02M67/00 having valves, e.g. having a plurality of valves in series
- F02M61/10—Other injectors with elongated valve bodies, i.e. of needle-valve type
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M2200/00—Details of fuel-injection apparatus, not otherwise provided for
- F02M2200/09—Fuel-injection apparatus having means for reducing noise
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M2200/00—Details of fuel-injection apparatus, not otherwise provided for
- F02M2200/18—Fuel-injection apparatus having means for maintaining safety not otherwise provided for
- F02M2200/185—Fuel-injection apparatus having means for maintaining safety not otherwise provided for means for improving crash safety
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Fuel-Injection Apparatus (AREA)
Abstract
The invention provides a method for controlling the opening of an oil sprayer, wherein the oil sprayer comprises a driving coil, a magnet body, a needle valve assembly, an elastic assembly and a power supply unit for applying voltage to the driving coil. The method comprises the following steps: in the first stage, a driving voltage is applied to a driving coil through a power supply unit, and an electromagnet generates electromagnetic force so as to drive a needle valve assembly to move upwards under the action of overcoming resistance; in the second stage, the driving voltage is closed, and the needle valve assembly performs upward deceleration movement under the action of resistance; and in the third stage, the driving voltage applied to the driving coil by the power supply unit is started, the magnet body generates electromagnetic force again, and the needle valve assembly is finally kept at the maximum opening position under the action of the electromagnetic force. The invention also provides a fuel injector. According to the invention, the ascending acceleration of the needle valve is slowed down in the movement process through the adjustment of the driving voltage of the oil injector, and the momentum and the impact force of the needle valve when the needle valve impacts the armature are weakened, so that the noise generated by the oil injector during working is effectively reduced.
Description
Technical Field
The invention relates to a method for controlling the opening of an oil injector and the oil injector.
Background
Electromagnetic fuel injectors are widely used in the fields of vehicles, agricultural machinery, motorcycles, generators and the like. The fuel injector generally includes a drive coil, a magnet body, a needle valve assembly, an elastic assembly, and a power supply unit for applying a voltage to the drive coil. When the fuel injector needs to be opened, the power supply unit applies a driving voltage to the driving coil. Under the action of the driving voltage, the needle valve assembly moves upwards. Eventually, the needle assembly comes into contact with the magnet or other blocking member to attenuate the speed of the needle assembly, eventually dropping to zero. The problem with this arrangement is that rattling noise is generated when the needle contacts the magnet (particularly when the engine is idling, where the noise is noticeable) and the mechanical properties of the needle assembly are also compromised by the impact during the impact event.
Disclosure of Invention
The invention aims to provide a method for controlling the opening of an oil injector and the oil injector, which can reduce noise.
According to one aspect of the present invention, there is provided a method of controlling opening of a fuel injector including a driving coil, a magnet body, a needle valve assembly, an elastic assembly, and a power supply unit for applying a voltage to the driving coil, the method comprising:
in the first stage, a driving voltage is applied to a driving coil through a power supply unit, and an electromagnet generates electromagnetic force so as to drive a needle valve assembly to move upwards under the action of overcoming resistance;
in the second stage, the power supply unit is closed so as to unload the driving voltage applied to the driving coil, and the needle valve assembly moves upwards in a decelerating manner under the action of resistance;
and in the third stage, the driving voltage applied to the driving coil by the power supply unit is started, the magnet body generates electromagnetic force again, and the needle valve assembly is finally kept at the maximum opening position under the action of the electromagnetic force.
Preferably, at the end of the second phase, the needle valve assembly reaches a maximum open position.
Preferably, at the end of the second phase, the speed of the needle valve assembly drops to zero under the influence of the resistance.
Preferably, the fuel injector is a low pressure fuel injector.
Preferably, when the needle valve assembly is at the maximum opening position, the needle valve assembly is contacted with the magnet body.
Preferably, the needle valve assembly comprises a needle valve and a fixing piece fixed together with the needle valve, and when the magnet body generates electromagnetic force, the electromagnetic force attracts the fixing piece to move upwards, so as to drive the needle valve to move upwards.
Preferably, the resilient assembly includes a stopper and a spring positioned between the stopper and the needle valve assembly, the spring compressing a resilient force when the needle valve assembly moves upward.
Preferably, the resistance includes an internal friction of the injector, an internal oil pressure of the injector, a calibration force of a spring, and a weight of the needle valve assembly itself.
According to an aspect of the present invention, there is provided a fuel injector including a driving coil, a magnet, a needle valve assembly, an elastic assembly, a power supply unit for applying a voltage to the driving coil, and a control unit for controlling:
in the first stage, a driving voltage is applied to a driving coil through a power supply unit, and an electromagnet generates electromagnetic force so as to drive a needle valve assembly to move upwards under the action of overcoming resistance;
in the second stage, the power supply unit is closed so as to unload the driving voltage applied to the driving coil, and the needle valve assembly moves upwards in a decelerating manner under the action of resistance;
and in the third stage, the driving voltage applied to the driving coil by the power supply unit is started, the magnet body generates electromagnetic force again, and the needle valve assembly is finally kept at the maximum opening position under the action of the electromagnetic force.
Preferably, at the end of the second phase, the needle valve assembly reaches a maximum open position and the speed of the needle valve assembly drops to zero under the influence of the resistance.
According to the method for controlling the opening of the oil injector and the oil injector, the driving voltage in the second stage is set to be in the closed state, so that the speed of the needle valve assembly in the movement process is reduced, and the collision noise of the needle valve assembly at the maximum opening position is further reduced.
Drawings
FIG. 1 is a schematic illustration of a fuel injector of the present invention.
FIG. 2 is a voltage diagram of the present invention for injector control.
FIG. 3 is a method of controlling fuel injector opening.
Detailed Description
Referring to fig. 1, the present invention discloses a fuel injector 100 including a driving coil 1, a magnet body 3, a needle valve assembly 2, an elastic assembly 4, a control unit 6, and a power supply unit 5 for applying a voltage to the driving coil 1. The needle valve assembly 2 includes a needle valve 22 and a fixing member 21 fixed to the needle valve 22, and when the magnet body 3 generates an electromagnetic force, the electromagnetic force attracts the fixing member 21 to move upward, thereby moving the needle valve 22 upward. The resilient assembly 4 includes a stopper 42 and a spring 41 between the stopper 42 and the needle valve assembly 2, and the spring 41 is compressed to generate a resilient force when the needle valve assembly 2 moves upward. Since the inside of the fuel injector 100 is filled with fuel, when the needle valve assembly 2 moves upward by the electromagnetic force, the resistance force composed of the elastic force of the elastic member 4, the frictional force of the fuel, and the gravity of the needle valve assembly 2 itself is overcome. Preferably, fuel injector 100 is a low pressure fuel injector. Although only the three resistances listed above are listed here, those skilled in the art will appreciate that different resistances may be generated under different use conditions.
With further reference to fig. 2, the control unit 6 controls the fuel injector 100 to open in the following manner:
in the first stage, a driving voltage u is applied to the driving coil 1 through the power supply unit 5, the magnet body 3 generates electromagnetic force, and the needle valve assembly 2 is driven to move upwards under the action of overcoming resistance. Preferably, the driving voltage u is a constant voltage. Under the action of the driving voltage u, the driving coil 1 generates a magnetic field, so that the magnet body 3 generates an electromagnetic force. The needle valve assembly 2 is moved upward by the electromagnetic force. The spring 41 is compressed and exerts an elastic resistance against the needle valve assembly 2. As the compression of the spring 41 increases, the elastic resistance also increases.
In the second stage, the driving voltage u applied to the driving coil 1 by the power supply unit 5 is turned off, and the needle valve assembly 2 performs upward deceleration movement under the action of resistance. Here, the resistance force includes the elastic force of the elastic member 4, the frictional force of the fuel, and the gravity of the needle valve assembly 2 itself. When the power supply unit 5 is turned off, the electromagnetic force disappears. The needle valve assembly 2 continues to move upward under inertia. The needle valve assembly 2 performs a deceleration movement due to the resistance. The third phase is started before the speed becomes zero, at the latest at the moment of zero.
In the third stage, the driving voltage u applied to the driving coil 1 by the power supply unit 5 is turned on, and the magnet body 3 generates electromagnetic force again, so that the needle valve assembly 2 is finally maintained at the maximum opening position under the action of the electromagnetic force. The electromagnetic force is greater than or at least equal to the resistance of the needle assembly.
Preferably, at the end of the second phase, the needle valve assembly 2 reaches a maximum open position, at which the speed of the needle valve assembly 2 drops to zero under the influence of the resistance. The magnitude of the drive voltage u, the start and end times of the second phase may be obtained in a calibrated manner. Through the arrangement, no pressure exists between the needle valve assembly 2 and the magnet body 3, so that the kinetic energy of the needle valve when the needle valve impacts the magnet body can be reduced, and the noise generated in the impacting process is reduced. The needle valve assembly 2 may be held at the maximum open position for a period of time by the electromagnetic force generated during the third stage.
In other embodiments, it may be set that at the end of the second phase, the needle valve assembly 2 has not reached the maximum open position. At the same time, the speed of the needle valve assembly 2 is zero or greater than zero at this time. In the third stage, a driving voltage is applied to the driving coil 1, and the magnet body 3 generates an electromagnetic force which is larger than the resistance of the needle valve assembly 2. Under the combined action of electromagnetic force and resistance, the needle valve assembly 2 continues to move upwards and finally contacts with the magnet body 3. Although noise is generated by the touch at this time, noise generated by the collision is reduced compared to the method in which the driving voltage is always applied.
The present invention may further include a fourth stage in which the power supply unit 5 applies a driving voltage u1 in the reverse direction to the driving coil 1. The driving voltage u1 is a directional voltage, and the magnet can be demagnetized rapidly under the action of the driving voltage, so that the needle valve assembly 2 can be closed rapidly.
Referring to FIG. 3, the present disclosure also discloses a method of controlling opening of a fuel injector 100, the method comprising:
in the first stage, a driving voltage is applied to the driving coil 1 through the power supply unit 5, the magnet body 3 generates electromagnetic force, and the needle valve assembly 2 is driven to move upwards under the action of overcoming resistance;
in the second stage, the driving voltage applied to the driving coil 1 by the power supply unit 5 is turned off, and the needle valve assembly 2 performs upward deceleration movement under the action of resistance;
in the third stage, the driving voltage applied to the driving coil 1 by the power supply unit 5 is turned on, and the magnet body 3 generates electromagnetic force again, so that the needle valve assembly 2 is finally maintained at the maximum opening position under the action of the electromagnetic force.
It will be apparent to those skilled in the art that various modifications and variations can be made to the above-described exemplary embodiments of the present invention without departing from the spirit and scope of the invention. Thus, it is intended that the present invention cover the modifications and variations of this invention provided they come within the scope of the appended claims and their equivalents.
Claims (10)
1. A method of controlling opening of a fuel injector comprising a drive coil (1), a magnet body (3), a needle valve assembly (2), a resilient assembly (4) and a power supply unit (5) for applying a voltage to the drive coil (1), characterized in that the method comprises:
in the first stage, a power supply unit (5) applies driving voltage to a driving coil (1), an iron absorption body (3) generates electromagnetic force, and then a needle valve component (2) is driven to move upwards under the action of overcoming resistance;
in the second stage, the power supply unit (5) is turned off so as to unload the driving voltage applied to the driving coil (1), and the needle valve assembly (2) performs upward deceleration movement under the action of resistance;
and in the third stage, the driving voltage applied to the driving coil (1) by the power supply unit (5) is started, the magnet body (3) generates electromagnetic force again, and the needle valve assembly (2) is finally kept at the maximum opening position under the action of the electromagnetic force.
2. Method according to claim 1, characterized in that at the end of the second phase the needle valve assembly (2) reaches a maximum opening position.
3. Method according to claim 2, characterized in that at the end of the second phase the speed of the needle valve assembly (2) is reduced to zero under the influence of the resistance.
4. A method according to any one of claims 1 to 3, in which the fuel injector is a low pressure fuel injector.
5. A method according to any one of claims 1 to 3, characterized in that the needle valve assembly (2) is brought into contact with the magnet (3) when the needle valve assembly (2) is in the maximum opening position.
6. The method of claim 5, wherein the needle valve assembly (2) comprises a needle valve (22) and a fixing member (21) fixed with the needle valve (22), and when the magnet body (3) generates the electromagnetic force, the electromagnetic force attracts the fixing member (21) to move upward, thereby moving the needle valve (22) upward.
7. The method of claim 1, wherein the resilient assembly (4) comprises a stop (42) and a spring (41) between the stop (42) and the needle valve assembly (2), the spring (41) compressing to generate a resilient force when the needle valve assembly (2) moves upward.
8. The method of claim 7, wherein the resistance includes injector internal friction, injector internal oil pressure, calibration force of a spring (41), and gravity of the needle assembly (2) itself.
9. A fuel injector comprising a drive coil (1), a magnet body (3), a needle valve assembly (2), an elastic assembly (4), a power supply unit (5) for applying a voltage to the drive coil (1), and a control unit (6), characterized in that the control unit (6) is configured to control:
in the first stage, a power supply unit (5) applies driving voltage to a driving coil (1), an iron absorption body (3) generates electromagnetic force, and a needle valve component (2) is driven to move upwards to open under the action of overcoming resistance;
in the second stage, the driving voltage applied to the driving coil (1) by the power supply unit (5) is turned off, and the needle valve assembly (2) performs upward deceleration movement under the action of resistance;
and in the third stage, the driving voltage applied to the driving coil (1) by the power supply unit (5) is started, the magnet body (3) generates electromagnetic force again, and the needle valve assembly (2) is finally kept at the maximum opening position under the action of the electromagnetic force.
10. A fuel injector as claimed in claim 9, characterized in that at the end of the second phase the needle valve assembly (2) reaches a maximum opening position and the speed of the needle valve assembly (2) drops to zero under the influence of the resistance.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910237703.9A CN111749802A (en) | 2019-03-27 | 2019-03-27 | Method for controlling opening of fuel injector and fuel injector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910237703.9A CN111749802A (en) | 2019-03-27 | 2019-03-27 | Method for controlling opening of fuel injector and fuel injector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111749802A true CN111749802A (en) | 2020-10-09 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910237703.9A Pending CN111749802A (en) | 2019-03-27 | 2019-03-27 | Method for controlling opening of fuel injector and fuel injector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111749802A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116951464A (en) * | 2023-06-12 | 2023-10-27 | 中国航空发动机研究院 | Oil injection device and afterburner |
Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6076508A (en) * | 1997-07-22 | 2000-06-20 | Isuzu Motors Limited | Fuel injection control device |
| US6128175A (en) * | 1998-12-17 | 2000-10-03 | Siemens Automotive Corporation | Apparatus and method for electronically reducing the impact of an armature in a fuel injector |
| JP2005171775A (en) * | 2003-12-08 | 2005-06-30 | Nissan Motor Co Ltd | Fuel injection device of internal combustion engine |
| DE102008007206A1 (en) * | 2007-11-09 | 2009-05-14 | Robert Bosch Gmbh | Method for controlling a solenoid valve |
| JP2011099358A (en) * | 2009-11-04 | 2011-05-19 | Nippon Soken Inc | Fuel injection valve |
| US20140238354A1 (en) * | 2013-02-25 | 2014-08-28 | Denso Corporation | Fuel injection controller and fuel injection system |
| US20140250869A1 (en) * | 2011-10-25 | 2014-09-11 | Mitsubishi Jidosha Kogyo Kabushiki Kaisha | Fuel injection apparatus for internal combustion engine |
| DE102014203538A1 (en) * | 2014-02-27 | 2015-08-27 | Robert Bosch Gmbh | Method for noise-reducing control of switchable valves, in particular injection valves of an internal combustion engine of a motor vehicle |
| CN105317604A (en) * | 2014-06-24 | 2016-02-10 | 丰田自动车株式会社 | Fuel injection system for internal combustion engine |
| US20160177855A1 (en) * | 2013-07-29 | 2016-06-23 | Hitachi Automotive Systems, Ltd. | Drive Device for Fuel Injection Device, and Fuel Injection System |
| DE102016208492B3 (en) * | 2016-05-18 | 2017-08-17 | Continental Automotive Gmbh | Method for operating a fuel injector with idle stroke |
| CN107076046A (en) * | 2014-10-21 | 2017-08-18 | 罗伯特·博世有限公司 | For the device being controlled at least one valve that can be switched |
| WO2018068905A1 (en) * | 2016-10-12 | 2018-04-19 | Continental Automotive Gmbh | Method and controller for controlling a switch valve |
-
2019
- 2019-03-27 CN CN201910237703.9A patent/CN111749802A/en active Pending
Patent Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6076508A (en) * | 1997-07-22 | 2000-06-20 | Isuzu Motors Limited | Fuel injection control device |
| US6128175A (en) * | 1998-12-17 | 2000-10-03 | Siemens Automotive Corporation | Apparatus and method for electronically reducing the impact of an armature in a fuel injector |
| JP2005171775A (en) * | 2003-12-08 | 2005-06-30 | Nissan Motor Co Ltd | Fuel injection device of internal combustion engine |
| DE102008007206A1 (en) * | 2007-11-09 | 2009-05-14 | Robert Bosch Gmbh | Method for controlling a solenoid valve |
| JP2011099358A (en) * | 2009-11-04 | 2011-05-19 | Nippon Soken Inc | Fuel injection valve |
| US20140250869A1 (en) * | 2011-10-25 | 2014-09-11 | Mitsubishi Jidosha Kogyo Kabushiki Kaisha | Fuel injection apparatus for internal combustion engine |
| US20140238354A1 (en) * | 2013-02-25 | 2014-08-28 | Denso Corporation | Fuel injection controller and fuel injection system |
| US20160177855A1 (en) * | 2013-07-29 | 2016-06-23 | Hitachi Automotive Systems, Ltd. | Drive Device for Fuel Injection Device, and Fuel Injection System |
| DE102014203538A1 (en) * | 2014-02-27 | 2015-08-27 | Robert Bosch Gmbh | Method for noise-reducing control of switchable valves, in particular injection valves of an internal combustion engine of a motor vehicle |
| CN105317604A (en) * | 2014-06-24 | 2016-02-10 | 丰田自动车株式会社 | Fuel injection system for internal combustion engine |
| CN107076046A (en) * | 2014-10-21 | 2017-08-18 | 罗伯特·博世有限公司 | For the device being controlled at least one valve that can be switched |
| DE102016208492B3 (en) * | 2016-05-18 | 2017-08-17 | Continental Automotive Gmbh | Method for operating a fuel injector with idle stroke |
| WO2018068905A1 (en) * | 2016-10-12 | 2018-04-19 | Continental Automotive Gmbh | Method and controller for controlling a switch valve |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116951464A (en) * | 2023-06-12 | 2023-10-27 | 中国航空发动机研究院 | Oil injection device and afterburner |
| CN116951464B (en) * | 2023-06-12 | 2024-06-04 | 中国航空发动机研究院 | Oil injection device and afterburner |
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