CN111648893A - Plunger for control valve of electric control oil injector, quick response control valve of electric control oil injector and control method of quick response control valve - Google Patents
Plunger for control valve of electric control oil injector, quick response control valve of electric control oil injector and control method of quick response control valve Download PDFInfo
- Publication number
- CN111648893A CN111648893A CN202010464265.2A CN202010464265A CN111648893A CN 111648893 A CN111648893 A CN 111648893A CN 202010464265 A CN202010464265 A CN 202010464265A CN 111648893 A CN111648893 A CN 111648893A
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- Prior art keywords
- plunger
- control
- oil outlet
- control valve
- cavity
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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
- 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
- F02M61/16—Details not provided for in, or of interest apart from, the apparatus of groups F02M61/02 - F02M61/14
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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
- F02M61/16—Details not provided for in, or of interest apart from, the apparatus of groups F02M61/02 - F02M61/14
- F02M61/18—Injection nozzles, e.g. having valve seats; Details of valve member seated ends, not otherwise provided for
- F02M61/188—Spherical or partly spherical shaped valve member ends
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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
- F02M61/16—Details not provided for in, or of interest apart from, the apparatus of groups F02M61/02 - F02M61/14
- F02M61/18—Injection nozzles, e.g. having valve seats; Details of valve member seated ends, not otherwise provided for
- F02M61/1893—Details of valve member ends not covered by groups F02M61/1866 - F02M61/188
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Fuel-Injection Apparatus (AREA)
Abstract
The invention discloses a plunger for an electric control oil sprayer control valve and the electric control oil sprayer control valve, wherein a counter bore and a radial groove are arranged on a plunger body, so that the plunger body moves upwards to a top dead center, high-pressure fuel oil flows out from an oil outlet channel after passing through the radial groove and the counter bore, the change of pressure in a control cavity is not influenced, and the plunger body is prevented from vibrating when reaching the top dead center. Meanwhile, when the ball valve moves downwards, the pressure of high-pressure fuel acts on the lower surface of the counter bore, and the plunger body moves downwards rapidly, so that delay of fuel injection closing is avoided.
Description
Technical Field
The invention relates to the technical field of diesel engine fuel injection systems, in particular to a plunger for an electric control fuel injector control valve, a quick response electric control fuel injector control valve and a control method thereof.
Background
The control valve of the electric control oil injector is a core important part in the electric control oil injector, and the stress state of the plunger and the connecting piece of the plunger is changed through the pressure change of fuel oil in the control cavity, so that the fuel oil injection is opened and closed.
In the existing control valve structure of the electronic control oil injector, the maximum lift of a plunger is limited by the height of a control cavity, when the plunger ascends to reach a top dead center, the upper surface of the plunger is in contact with the upper surface of the control cavity, fuel flow of an oil outlet throttle hole in the control cavity is obstructed, the change of fuel pressure in the control cavity is influenced, and the plunger is easy to shake at the top dead center. Meanwhile, when the ball valve is seated and an oil outlet throttling hole in the control valve is closed, the fuel pressure in the control cavity is increased, the structure can prevent the fuel pressure from acting on the upper surface of the plunger, so that the closing delay of fuel injection is caused, the pulse width of the fuel injection is increased, and the difficulty is increased for matching the electronic control fuel injector with an engine.
Disclosure of Invention
The invention aims to provide a plunger for an electronic control fuel injector control valve, aiming at the technical defects that the plunger generates vibration when reaching an upper dead point and fuel injection is delayed to close in the prior art.
Another object of the present invention is to provide a quick response electronically controlled fuel injector control valve.
Another object of the invention is to provide a control method of the above-mentioned fast response electronic control fuel injector control valve.
The technical scheme adopted for realizing the purpose of the invention is as follows:
the middle part of the upper surface of the top end of a plunger body is axially and downwards sunken to form a counter bore, the periphery of the upper surface of the top end forms a bulge, one or more radial grooves for high-pressure fuel to pass through are formed in the bulge, and each radial groove is communicated with the counter bore in the radial direction.
In the above technical scheme, the number of the radial grooves is 4, the radial grooves are uniformly distributed on the protrusions, and the axial included angle between adjacent radial grooves is 90 °.
In the above technical solution, a cross section of each radial groove in the circumferential direction of the plunger is a semicircle with an upward opening, and a height of the counter bore is equal to a radius of the semicircle.
In the technical scheme, the diameter of the counter bore is 70% -95% of the diameter of the plunger.
In the above technical scheme, the outer wall of the plunger body is provided with two parallel annular grooves, and each annular groove is a circumferential groove formed on the side wall.
In another aspect of the invention, a quick response electric control oil injector control valve comprises a control body, a plunger for the electric control oil injector control valve and a ball valve;
the control body is provided with an oil inlet channel for high-pressure fuel to enter, an oil outlet channel for high-pressure fuel to flow out and a plunger cavity for accommodating the plunger body, the oil inlet channel and the oil outlet channel are respectively communicated with the plunger cavity, the diameter of an oil outlet orifice in the oil outlet channel is larger than that of the oil inlet orifice in the oil inlet channel, the plunger body moves up and down in the plunger cavity, and the ball valve is positioned at the top of the oil outlet channel and is sealed with the oil outlet channel;
the plunger chamber includes the control chamber and the plunger section that set up from top to bottom, the diameter in control chamber is greater than the diameter of plunger section, the diameter of plunger section equals the diameter of plunger body, works as when the plunger body goes upward to the top dead center, the tip side of plunger body with form the space between the control intracavity lateral wall.
In the technical scheme, the oil inlet channel comprises a first bell mouth arranged on the side face of the control body and an oil inlet throttling hole which radially penetrates through the first bell mouth and the control cavity.
In the technical scheme, the oil outlet channel sequentially comprises a second bell mouth, a sealing conical surface, a first flow guide section, an oil outlet throttling hole, a second flow guide section and a third bell mouth from top to bottom, wherein the second bell mouth, the sealing conical surface, the first flow guide section, the oil outlet throttling hole, the second flow guide section and the third bell mouth are communicated with each other; the diameter of ball valve is less than sealed conical surface upper edge diameter, is greater than the diameter of first water conservancy diversion section, when the ball valve is located the least significant end, with sealed conical surface line is sealed, third horn mouth opening down with the control chamber intercommunication.
In the above technical solution, the diameter of the radial groove is larger than the diameter of the oil outlet orifice.
In another aspect of the present invention, in the control method of the quick response electronic control fuel injector control valve, high-pressure fuel enters a control cavity through an oil inlet channel, when the ball valve moves upwards, the ball valve and the oil outlet channel are unsealed, and the high-pressure fuel flows out through the oil outlet channel, because the diameter of the oil outlet orifice is larger than that of the oil inlet orifice, the pressure in the control cavity is reduced, the plunger body moves upwards to an upper dead point, and the high-pressure fuel sequentially passes through the radial groove and the counter bore and then flows out through the oil outlet channel without affecting the change of the pressure in the control cavity;
when the ball valve descends, the ball valve and the oil outlet channel line are hermetically established, the oil outlet channel is closed, the pressure in the control cavity is increased, the pressure of high-pressure fuel acts on the lower surface of the counter bore, and the plunger body is driven to descend rapidly.
Compared with the prior art, the invention has the beneficial effects that:
1. according to the plunger for the control valve of the electric control oil sprayer, the plunger body is provided with the counter bore and the radial groove, so that the plunger body moves upwards to the top dead center, high-pressure fuel oil flows out from the oil outlet channel after passing through the radial groove and the counter bore, the high-pressure fuel oil can still keep the high-pressure fuel oil flowing channel smooth, the change of pressure in the control cavity is not influenced, and the plunger body is prevented from vibrating when reaching the top dead center. Meanwhile, the arrangement of the counter bore increases the stress area of the plunger body when the plunger body moves upwards to the top dead center. When the ball valve moves downwards, the pressure of high-pressure fuel acts on the lower surface of the counter bore, the plunger body moves downwards rapidly, and delay of fuel injection closing is avoided.
2. The invention provides a quick-response electric control oil injector control valve, which comprises a control body, and a plunger and a ball valve for the electric control oil injector control valve, wherein a counter bore and a radial groove are arranged on a plunger body, so that the plunger body moves upwards to a top dead center, high-pressure fuel oil flows out from an oil outlet channel after passing through the radial groove and the counter bore, the change of pressure in a control cavity is not influenced, and the plunger body is prevented from vibrating when reaching the top dead center. When the ball valve moves downwards, the pressure of high-pressure fuel acts on the lower surface of the counter bore, the plunger body moves downwards rapidly, and delay of fuel injection closing is avoided.
Drawings
FIG. 1 is a schematic view of the upper end of the plunger;
FIG. 2 is a schematic view of the plunger;
FIG. 3 is a schematic cross-sectional view of a control valve of the fast response electronic fuel injector;
fig. 4 is a schematic cross-sectional view of the control body.
In the figure: 1-control body, 1-1-second bell mouth, 1-2-sealing conical surface, 1-3-first flow guide section, 1-4-oil outlet throttling hole, 1-5-second flow guide section, 1-6-third bell mouth, 1-7-control cavity, 1-8-plunger section, 1-9-first bell mouth, 1-10-oil inlet throttling hole, 2-plunger body, 2-1-radial groove, 2-2-counter bore, 2-3-annular groove, 2-4-bulge and 3-ball valve.
Detailed Description
The present invention will be described in further detail with reference to specific examples. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Example 1
A plunger for a quick response electronic control fuel injector control valve is disclosed, as shown in fig. 1 and fig. 2, the middle part of the upper surface of the top end of a plunger body 2 is axially downwards sunken to form a counter bore 2-2, the periphery of the upper surface of the top end is provided with a bulge 2-4, one or more radial grooves 2-1 for high-pressure fuel to pass through are arranged on the bulge 2-4, and each radial groove 2-1 is communicated with the counter bore 2-2 in the radial direction.
The plunger body 2 is provided with the counter bore 2-2 and the radial groove 2-1, so that the plunger moves upwards to the top dead center, high-pressure fuel flows out of the fuel outlet channel after passing through the radial groove 2-1 and the counter bore 2-2, the change of pressure in the control cavity is not influenced, and the plunger is prevented from shaking when reaching the top dead center. Meanwhile, when the ball valve moves downwards, the pressure of high-pressure fuel acts on the lower surface of the counter bore, and the plunger moves downwards rapidly, so that delay of fuel injection closing is avoided.
Preferably, the number of the radial grooves 2-1 is 4, the radial grooves are uniformly distributed on the protrusions 2-4, and the included angle between the axes of the adjacent radial grooves 2-1 is 90 degrees.
Preferably, each radial groove 2-1 has a semicircular section with an upward opening in the circumferential direction of the plunger, and the height of the counter bore 2-2 is equal to the radius of the semicircular section.
Preferably, the diameter of the counter bore 2-2 is 70% -95% of the diameter of the plunger body 2, so that the counter bore has a larger lower surface as a stress surface to drive the plunger body 2 to descend rapidly when the fuel pressure rises.
Preferably, the outer wall of the plunger body 2 is provided with two parallel annular grooves 2-3, and each annular groove 2-3 is a circumferential groove formed on the side wall. The annular groove 2-3 can store high-pressure fuel leaked from the control cavity 1-7, and a uniform oil film is formed on the outer wall of the plunger body 2 and the inner wall of the plunger section 1-8, so that abrasion is reduced.
Example 2
A quick response electronic control fuel injector control valve is shown in figure 3 and comprises a control body 1, a plunger body 2 and a ball valve 3, wherein the plunger body 2 is described in embodiment 1;
as shown in fig. 4, an oil inlet channel for high-pressure fuel to enter, an oil outlet channel for high-pressure fuel to flow out, and a plunger cavity for accommodating the plunger body 2 are provided on the control body 1, the plunger body 2 moves up and down in the plunger cavity, the ball valve 3 is sealed with the oil outlet channel, and the oil inlet channel and the oil outlet channel are respectively communicated with the plunger cavity;
the plunger cavity comprises control cavities 1-7 and plunger sections 1-8 which are arranged up and down, the diameter of the control cavities 1-7 is larger than that of the plunger sections 1-8, the diameter of the plunger sections 1-8 is equal to that of the plunger body 2, when the plunger body 2 moves upwards to the top dead center, a gap is formed between the side face of the end part of the plunger body 2 and the inner side wall of the control cavities 1-7, and a flowing space is provided for high-pressure fuel oil when the plunger body 2 moves upwards to the top dead center;
the middle part of the upper surface of the top end of the plunger body 2 is axially and downwards sunken to form a counter bore 2-2, a radial groove 2-1 for high-pressure fuel to pass through is radially arranged at the top end of the plunger body 2, and the counter bore 2-2 is radially communicated with the outer surface of the plunger body 2 through the radial groove 2-1.
The control method of the quick response electric control oil injector control valve comprises the following steps:
high-pressure fuel enters a control cavity 1-7 through an oil inlet channel, when the ball valve 3 moves upwards, the ball valve 3 and the oil outlet channel are unsealed, the high-pressure fuel flows out through the oil outlet channel, because the diameter of the oil outlet orifice 1-4 is larger than that of the oil inlet orifice 1-10, the pressure in the control cavity 1-7 is reduced, the plunger body 2 moves upwards to the top dead center, the high-pressure fuel enters the radial groove 2-1 and the counter bore 2-2 through a gap between the side surface of the end part of the plunger body 2 and the inner side wall of the control cavity 1-7 and then flows out from the oil outlet channel, the high-pressure fuel flow channel is still smooth without influencing the change of the pressure in the control cavity 1-7, and the plunger body 2 is prevented from shaking when reaching the top dead center;
when the ball valve 3 moves downwards, the ball valve 3 and the oil outlet channel are sealed and established, the oil outlet channel is closed, the pressure in the control cavity 1-7 is increased, the pressure of high-pressure fuel acts on the lower surface of the counter bore 2-2, the plunger body 2 is driven to move downwards quickly, and delay of fuel injection closing is avoided.
Example 3
This embodiment is a further explanation of the oil inlet passage and the oil outlet passage on the basis of embodiment 1.
Specifically, the oil inlet channel comprises first bellmouths 1-9 arranged on the side face of the control body 1 and oil inlet throttle holes 1-10 which radially penetrate the first bellmouths 1-9 and the control cavities 1-7.
Specifically, the oil outlet channel sequentially comprises a second bell mouth 1-1 with an upward opening, a sealing conical surface 1-2 with a large upper part and a small lower part, a first flow guide section 1-3, an oil outlet throttling hole 1-4, a second flow guide section 1-5 and a third bell mouth 1-6 from top to bottom; the diameter of the ball valve 3 is smaller than the diameter of the upper edge of the sealing conical surface 1-2 and larger than the diameter of the first flow guide section 1-3, namely the diameter of the lower edge of the sealing conical surface 1-2, the ball valve 3 is sealed with the sealing conical surface 1-2, and the opening of the third bell mouth 1-6 is communicated with the control cavity 1-7 downwards.
Specifically, the diameters of the oil outlet orifices 1-4 are larger than the diameters of the oil inlet orifices 1-10. When the ball valve 3 moves upwards, the sealing between the ball valve 3 and the oil outlet channel line is released, high-pressure fuel oil flows out through the oil outlet channel, and the pressure in the control cavity 1-7 is reduced because the diameter of the oil outlet throttling hole 1-4 is larger than that of the oil inlet throttling hole 1-10.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.
Claims (10)
1. The plunger for the control valve of the electric control fuel injector is characterized in that the middle of the upper surface of the top end of a plunger body (2) is axially and downwards sunken to form a counter bore (2-2), a bulge (2-4) is formed on the periphery of the upper surface of the top end, one or more radial grooves (2-1) for high-pressure fuel to pass through are formed in the bulge (2-4), and each radial groove (2-1) is communicated with the counter bore (2-2) in the radial direction.
2. A plunger for an electronic fuel injector control valve according to claim 1, characterized in that: the number of the radial grooves (2-1) is 4, the radial grooves are uniformly distributed on the protrusions (2-4), and the axial included angle of the adjacent radial grooves (2-1) is 90 degrees.
3. A plunger for an electronic fuel injector control valve according to claim 1, characterized in that: the section of each radial groove (2-1) in the circumferential direction of the plunger (2) is a semicircle with an upward opening, and the height of the counter bore (2-2) is equal to the radius of the semicircle.
4. A plunger for an electric fuel injector control valve according to claim 1, characterized in that the diameter of the counter bore (2-2) is 70-95% of the diameter of the plunger (2).
5. A plunger for an electric fuel injector control valve according to claim 1, characterized in that the plunger (2) is provided with two parallel annular grooves (2-3) in its outer wall, each annular groove (2-3) being a circumferential groove formed in the side wall.
6. A quick response electric control oil injector control valve is characterized in that: comprising a control body (1), a plunger and a ball valve (3) for an electrically controlled injector control valve according to any one of claims 1 to 5;
an oil inlet channel for high-pressure fuel to enter, an oil outlet channel for high-pressure fuel to flow out and a plunger cavity for accommodating the plunger body (2) are arranged on the control body (1), the oil inlet channel and the oil outlet channel are respectively communicated with the plunger cavity, the diameter of an oil outlet orifice (1-4) in the oil outlet channel is larger than that of an oil inlet orifice (1-10) in the oil inlet channel, the plunger body (2) moves up and down in the plunger cavity, and the ball valve (3) is positioned at the top of the oil outlet channel and is sealed with the oil outlet channel;
the plunger cavity comprises a control cavity (1-7) and a plunger section (1-8), the diameter of the control cavity (1-7) is larger than that of the plunger section (1-8), the diameter of the plunger section (1-8) is equal to that of the plunger body (2), and when the plunger body (2) moves upwards to a top dead center, a gap is formed between the side face of the end part of the plunger body (2) and the inner side wall of the control cavity (1-7).
7. A fast response electronically controlled fuel injector control valve as set forth in claim 6 wherein: the oil inlet channel comprises first bell mouths (1-9) arranged on the side face of the control body (1) and oil inlet throttling holes (1-10) which are used for radially communicating the first bell mouths (1-9) with the control cavity (1-7).
8. A fast response electronically controlled fuel injector control valve as set forth in claim 7 wherein: the oil outlet channel sequentially comprises a second bell mouth (1-1), a sealing conical surface (1-2), a first flow guide section (1-3), an oil outlet throttling hole (1-4), a second flow guide section (1-5) and a third bell mouth (1-6) from top to bottom, wherein the second bell mouth (1-1), the sealing conical surface (1-2), the first flow guide section, the second flow guide section and the third bell mouth are communicated with each other; the diameter of the ball valve (3) is smaller than the diameter of the upper edge of the sealing conical surface (1-2) and larger than the diameter of the first flow guide section (1-3), the ball valve (3) is in line sealing with the sealing conical surface (1-2) when located at the lowest end, and the opening of the third bell mouth (1-6) is communicated with the control cavity (1-7) downwards.
9. A fast response electronically controlled fuel injector control valve as set forth in claim 8, wherein: the diameter of the radial groove (2-1) is larger than that of the oil outlet throttle hole (1-4).
10. The control method for the quick response electric control fuel injector control valve according to claim 9, characterized in that high-pressure fuel enters a control cavity (1-7) through an oil inlet channel, when the ball valve (3) moves upwards, the sealing of the ball valve (3) and the oil outlet channel line is released, the high-pressure fuel flows out through the oil outlet channel, as the diameter of the oil outlet orifice (1-4) is larger than that of the oil inlet orifice (1-10), the pressure in the control cavity (1-7) is reduced, the plunger body (2) moves upwards to the top dead center, the high-pressure fuel sequentially passes through the radial groove (2-1) and the counter bore (2-2) and then flows out through the oil outlet channel without influencing the change of the pressure in the control cavity (1-7);
when the ball valve (3) descends, the ball valve (3) and the oil outlet channel line are hermetically established, the oil outlet channel is closed, the pressure in the control cavity (1-7) is increased, and the pressure of high-pressure fuel acts on the lower surface of the counter bore (2-2) to drive the plunger body (2) to descend rapidly.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010464265.2A CN111648893A (en) | 2020-05-27 | 2020-05-27 | Plunger for control valve of electric control oil injector, quick response control valve of electric control oil injector and control method of quick response control valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010464265.2A CN111648893A (en) | 2020-05-27 | 2020-05-27 | Plunger for control valve of electric control oil injector, quick response control valve of electric control oil injector and control method of quick response control valve |
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| CN111648893A true CN111648893A (en) | 2020-09-11 |
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| CN202010464265.2A Pending CN111648893A (en) | 2020-05-27 | 2020-05-27 | Plunger for control valve of electric control oil injector, quick response control valve of electric control oil injector and control method of quick response control valve |
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| CN (1) | CN111648893A (en) |
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| US5011082A (en) * | 1989-03-03 | 1991-04-30 | Weber S.R.L. | Perfected diesel engine electromagnetic fuel injector |
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| US20100176222A1 (en) * | 2009-01-12 | 2010-07-15 | Gm Global Technology Operations, Inc. | Pressure Actuated Fuel Injector |
| CN102400825A (en) * | 2011-12-20 | 2012-04-04 | 余姚市舒春机械有限公司 | Cooling needle valve matching part for marine diesel engine |
| CN202937389U (en) * | 2012-10-12 | 2013-05-15 | 福建省莆田市中涵机动力有限公司 | Pressure balanced type outer seal plane control valve of common-rail oil spraying device |
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| CN104265530A (en) * | 2014-07-31 | 2015-01-07 | 中国第一汽车股份有限公司无锡油泵油嘴研究所 | Injector control valve of electric control internal combustion engine |
| US20150107560A1 (en) * | 2012-05-30 | 2015-04-23 | Caterpillar Motoren Gmbh & Co. Kg | Plunger for an internal combustion engine fuel pump |
| CN109162846A (en) * | 2018-07-26 | 2019-01-08 | 哈尔滨工程大学 | Pressure accumulation type piezoelectricity with control chamber sliding block-electromagnetism bivalve electric-controlled fuel injector |
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2020
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB417541A (en) * | 1933-01-04 | 1934-10-08 | Paul Hansen | Improvements in and relating to fuel injection pumps for internal combustion engines |
| US5011082A (en) * | 1989-03-03 | 1991-04-30 | Weber S.R.L. | Perfected diesel engine electromagnetic fuel injector |
| US20050199753A1 (en) * | 2001-05-08 | 2005-09-15 | Peter Boehland | Fuel injection valve for internal combustion engines |
| CN1651753A (en) * | 2004-02-04 | 2005-08-10 | 罗伯特·博世有限公司 | Fuel injection system for IC engine |
| CN101338716A (en) * | 2008-09-02 | 2009-01-07 | 北京华威奇燃油喷射科技有限公司 | High pressure co-rail electric control fuel injector |
| CN101769217A (en) * | 2008-12-29 | 2010-07-07 | C.R.F.阿西安尼顾问公司 | Fuel injection system with high repeatability and stability of operation for an internal-combustion engine |
| US20100176222A1 (en) * | 2009-01-12 | 2010-07-15 | Gm Global Technology Operations, Inc. | Pressure Actuated Fuel Injector |
| CN102400825A (en) * | 2011-12-20 | 2012-04-04 | 余姚市舒春机械有限公司 | Cooling needle valve matching part for marine diesel engine |
| US20150107560A1 (en) * | 2012-05-30 | 2015-04-23 | Caterpillar Motoren Gmbh & Co. Kg | Plunger for an internal combustion engine fuel pump |
| CN202937389U (en) * | 2012-10-12 | 2013-05-15 | 福建省莆田市中涵机动力有限公司 | Pressure balanced type outer seal plane control valve of common-rail oil spraying device |
| CN103967666A (en) * | 2013-02-04 | 2014-08-06 | 辽宁新风企业集团有限公司 | Hydraulic controller of center hole pressure accumulation type common rail fuel injector |
| CN104265530A (en) * | 2014-07-31 | 2015-01-07 | 中国第一汽车股份有限公司无锡油泵油嘴研究所 | Injector control valve of electric control internal combustion engine |
| CN109162846A (en) * | 2018-07-26 | 2019-01-08 | 哈尔滨工程大学 | Pressure accumulation type piezoelectricity with control chamber sliding block-electromagnetism bivalve electric-controlled fuel injector |
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Application publication date: 20200911 |