CN101818711B - Injection valve of electric control oil injector - Google Patents
Injection valve of electric control oil injector Download PDFInfo
- Publication number
- CN101818711B CN101818711B CN2010101235650A CN201010123565A CN101818711B CN 101818711 B CN101818711 B CN 101818711B CN 2010101235650 A CN2010101235650 A CN 2010101235650A CN 201010123565 A CN201010123565 A CN 201010123565A CN 101818711 B CN101818711 B CN 101818711B
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- CN
- China
- Prior art keywords
- housing
- armature
- control piston
- throttle orifice
- valve seat
- 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.)
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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
- F02M47/00—Fuel-injection apparatus operated cyclically with fuel-injection valves actuated by fluid pressure
- F02M47/02—Fuel-injection apparatus operated cyclically with fuel-injection valves actuated by fluid pressure of accumulator-injector type, i.e. having fuel pressure of accumulator tending to open, and fuel pressure in other chamber tending to close, injection valves and having means for periodically releasing that closing pressure
- F02M47/027—Electrically actuated valves draining the chamber to release the closing pressure
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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
- F02M63/00—Other fuel-injection apparatus having pertinent characteristics not provided for in groups F02M39/00 - F02M57/00 or F02M67/00; Details, component parts, or accessories of fuel-injection apparatus, not provided for in, or of interest apart from, the apparatus of groups F02M39/00 - F02M61/00 or F02M67/00; Combination of fuel pump with other devices, e.g. lubricating oil pump
- F02M63/0012—Valves
- F02M63/0031—Valves characterized by the type of valves, e.g. special valve member details, valve seat details, valve housing details
- F02M63/0033—Lift valves, i.e. having a valve member that moves perpendicularly to the plane of the valve seat
- F02M63/0036—Lift valves, i.e. having a valve member that moves perpendicularly to the plane of the valve seat with 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
- F02M2200/00—Details of fuel-injection apparatus, not otherwise provided for
- F02M2200/16—Sealing of fuel injection apparatus not otherwise provided for
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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
- F02M2200/28—Details of throttles in fuel-injection apparatus
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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
- F02M63/00—Other fuel-injection apparatus having pertinent characteristics not provided for in groups F02M39/00 - F02M57/00 or F02M67/00; Details, component parts, or accessories of fuel-injection apparatus, not provided for in, or of interest apart from, the apparatus of groups F02M39/00 - F02M61/00 or F02M67/00; Combination of fuel pump with other devices, e.g. lubricating oil pump
- F02M63/0012—Valves
- F02M63/0014—Valves characterised by the valve actuating means
- F02M63/0015—Valves characterised by the valve actuating means electrical, e.g. using solenoid
- F02M63/0017—Valves characterised by the valve actuating means electrical, e.g. using solenoid using electromagnetic operating means
- F02M63/0021—Valves characterised by the valve actuating means electrical, e.g. using solenoid using electromagnetic operating means characterised by the arrangement of mobile armatures
- F02M63/0022—Valves characterised by the valve actuating means electrical, e.g. using solenoid using electromagnetic operating means characterised by the arrangement of mobile armatures the armature and the valve being allowed to move relatively to each other
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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)
- Fluid Mechanics (AREA)
- Fuel-Injection Apparatus (AREA)
- Magnetically Actuated Valves (AREA)
Abstract
The invention relates to an injection valve of an electric control oil injector. A valve seat is mounted on a throttle orifice plate, a control piston is arranged in a shell and provided with a pressure-adjusting spring, one end of the control piston is connected with a mandril and connected with a nozzle tip matching part by the mandril, and the nozzle tip matching part is fixed on the shell by a fastening cap. The injection valve of the electric control oil injector is characterized in that the throttle orifice plate is compressed on the shell by a compression nut through a positioning plate, the shell and the throttle orifice plate are attached and connected, an armature is mounted in a guiding seat and moves in the guiding seat in a reciprocating mode, an electromagnet, a liner ring and the guiding seat are compressed by an electromagnet fastening cap and fixed on the shell, a part of a steel ball is pressed in a hole of the armature, an electromagnet spring is arranged on the armature, and the concave spherical surface of the valve seat contacts with one part of the steel ball protruding out of the armature. The invention has simple, compact and reasonable structure and can ensure the air tightness of the valve seat and the throttle orifice plate after being attached, lower the processing requirements of the valve seat and improve the air tightness of the injection valve.
Description
Technical field
The present invention relates to a kind of injection valve of electric-controlled fuel injector, especially a kind of injection valve of electric-controlled fuel injector of use for diesel engine.
Background technique
Electric-controlled fuel injector is the critical component of this system, and it can realize the idealized control to fuel injection characteristic, in order to realize the quick opening and closing of electric-controlled fuel injector; Utilize the pressure difference at control piston two ends to control opening and closing,, utilize this principle to satisfy reflecting requirement fast fully electric-controlled fuel injector according to the characteristic of liquid; For the sealing in the control room that guarantees the control piston two ends, relevant workpiece is required very high owing to there is numerous parts to fit together; The relative position degree is difficult to guarantee; In order to reach requirement, processing cost is very high, and it is very high to cut reject rate
Summary of the invention
The objective of the invention is to overcome above-mentioned deficiency, thereby a kind of injection valve of electric-controlled fuel injector is provided, can guarantee the sealing after valve seat and restricting orifice are fitted, reduced, can improve the sealing of injection valve the valve seat processing request.
According to technological scheme provided by the invention, the injection valve of electric-controlled fuel injector comprises housing, restricting orifice, valve seat, control piston, and said valve seat is installed on the restricting orifice; Be provided with control piston in the said housing, control piston and shell are equipped with pressure adjusting spring on the control piston; Connect push rod on one end of control piston; And be connected with oil nozzle idol part through push rod, by tight cap oil nozzle idol part be fixed on the housing, characteristic is: gland nut is pressed on restricting orifice on the housing through positioning plate; Housing and restricting orifice are fitted and connected; Armature is installed in the guide holder, the to-and-fro motion in guide holder of said armature, and the very tight cap of electromagnetism compresses and is fixed on electromagnet, grommet and guide holder on the housing; A steel ball part is pressed in the hole of armature, and the electromagnet spring is arranged on the armature, and the part of the outstanding armature of the concave spherical surface of valve seat and steel ball is to contacting.
Be provided with very little gap between the other end of said control piston and restricting orifice.
Be provided with influent stream passage, return flow line, backflow throttle orifice, influent stream throttle orifice in the said housing; The influent stream passage is communicated with the influent stream throttle orifice; The backflow throttle orifice is communicated with the return flow line; Return port is communicated with the backflow throttle orifice, and highly pressurised liquid gets into by control piston, return flow line through influent stream passage and influent stream throttle orifice, in the common control room that forms of housing and restricting orifice.
Compared with present technology the present invention has the following advantages:
The present invention is simple, compact and reasonable for structure; Can guarantee the sealing after valve seat and restricting orifice are fitted, reduce, can improve the sealing of injection valve the valve seat processing request.
Description of drawings
Fig. 1 is a structural representation of the present invention.
Fig. 2 is an electric-controlled fuel injector structural representation of the present invention.
Embodiment
Following the present invention will combine the embodiment in the accompanying drawing to further describe:
Like Fig. 1～shown in Figure 2: comprise the very tight cap of electromagnet 1, electromagnetism 2, electromagnet spring 3, armature 4, grommet 5, guide holder 6, gland nut 7, positioning plate 8, valve seat 9, restricting orifice 10, pressure adjusting spring 11, push rod 12, oil nozzle idol part 13, tight cap 14, housing 15, steel ball 16, backflow throttle orifice 17, return port 18, influent stream throttle orifice 19, control room 20, influent stream passage 21, control piston 22, return flow line 23.
The present invention adopts valve seat 9 to be installed on the restricting orifice 10; Be provided with control piston 22 in the said housing 15, control piston 22 cooperates with housing 15, under oil tight prerequisite, keeps the flexibility of motion; Pressure adjusting spring 11 is housed on the control piston 22; Connect push rod 12 on one end of control piston 22, and be connected with oil nozzle idol part 13, oil nozzle idol part 13 is fixed on the housing 15 by tight cap 14 through push rod 12; 10 of the other end of control piston 22 and restricting orifices are provided with very little gap; Gland nut 7 is pressed on restricting orifice 10 on the housing 15 through positioning plate 8, and housing 15 and restricting orifice 10 are fitted and connected, and positioning plate 8 is positioned at correct position on the housing 15 with guide holder 6; Armature 4 is installed in the guide holder 6; Armature 4 can to-and-fro motion in guide holder 6; Armature 4 reciprocating distances are regulated by the thickness of the grommet 5 between armature 4 and the electromagnet 1, and the very tight cap 2 of electromagnetism compresses electromagnet 1, grommet 5 and guide holder 6 and be fixed on the housing 15; In housing 15, be provided with influent stream passage 21, return flow line 23; Influent stream passage 21 is communicated with influent stream throttle orifice 19, and highly pressurised liquid gets into by control piston 22, return flow line 23 through influent stream passage 21 and influent stream throttle orifice 19, in housing 15 and the restricting orifice 10 common control rooms 20 that form; The part of steel ball 16 is pressed in the preformed hole of armature 4; Steel ball 16 and armature 4 interference fit, electromagnet spring 3 is arranged on the armature 4, and the part that the concave spherical surface of valve seat 9 and steel ball 16 are given prominence to armature 4 is to contacting; Pretightening force on the electromagnet spring 3 is vertically acted on valve seat 9 and restricting orifice 10 faying surfaces all the time; The sealing surface of valve seat 9 has guaranteed the sealing after valve seat 9 is fitted with restricting orifice 10 greater than the sealing surface around the backflow throttle orifice, has reduced valve seat 9 processing requests.
When electromagnet 1 is not switched on; Pretightening force on the electromagnet spring 3 acts on the armature 4; And valve seat 9 and restricting orifice 10 are fitted through steel ball 16, cut off in the control room 20 liquid and got back in the return flow line 23 through the backflow throttle orifice 17 that is arranged on restricting orifice 10; S in the control room 20 acts on the end face of control piston 22; S acts on the oil nozzle idol part 13 through influent stream passage 21; The power on the oil nozzle idol part 13 of acting on is less than the power that acts on control piston 22, and oil nozzle idol part 13 keeps shut.
When electromagnet 1 energising, electromagnetic force overcomes electromagnet spring 3 pretightening forces, with armature 4 adhesives; The pretightening force that acts on the valve seat 9 disappears; Open at fluid pressure effect lower valve base 9, backflow throttle orifice 17 is communicated with return flow line 23, and return port 18 is communicated with backflow throttle orifice 17; Liquid in the control room 20 arrives backflow throttle orifice 17 entering return flow lines 23 through return port 18; The liquid that flows into control room 20 is less than the liquid that flows out, and fluid pressure reduces in the control room 20, and the power that acts on oil nozzle idol part 13 this moment is greater than the power on the liquid effects control piston 22 in the control room 20; Oil nozzle idol part 13 is opened under the fluid pressure effect, like this according to setting recursive opening and closing.
Claims (2)
1. the injection valve of an electric-controlled fuel injector; It mainly comprises housing (15), restricting orifice (10), valve seat (9), control piston (22), and said valve seat (9) is installed on the restricting orifice (10), is provided with control piston (22) in the said housing (15); Control piston (22) cooperates with housing (15); Pressure adjusting spring (11) is housed on the control piston (22), connects push rod (12) on the end of control piston (22), and be connected with oil nozzle idol part (13) through push rod (12); By tight cap (14) oil nozzle idol part (13) is fixed on the housing (15); It is characterized in that: gland nut (7) is pressed on restricting orifice (10) on the housing (15) through positioning plate (8), and housing (15) is fitted and connected with restricting orifice (10), and armature (4) is installed in the guide holder (6); Said armature (4) to-and-fro motion in guide holder (6), the very tight cap of electromagnetism (2) compresses electromagnet (1), grommet (5) and guide holder (6) and be fixed on the housing (15); Electromagnet spring (3) is arranged on the armature (4), and steel ball (a 16) part is pressed in the hole of armature (4), and the concave spherical surface of valve seat (9) contacts with the part of the outstanding armature (4) of steel ball (16); Be provided with influent stream passage (21), return flow line (23), backflow throttle orifice (17), influent stream throttle orifice (19) in the described housing (15); Influent stream passage (21) is communicated with influent stream throttle orifice (19); Backflow throttle orifice (17) is communicated with return flow line (23); Return port (18) is communicated with backflow throttle orifice (17), and highly pressurised liquid gets in the control room (20) that is formed jointly by control piston (22), return flow line (23), housing (15) and restricting orifice (10) through influent stream passage (21) and influent stream throttle orifice (19).
2. the injection valve of electric-controlled fuel injector as claimed in claim 1 is characterized in that being provided with the gap between the other end and the restricting orifice (10) of described control piston (22).
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010101235650A CN101818711B (en) | 2010-06-03 | 2010-06-03 | Injection valve of electric control oil injector |
| PCT/CN2010/001870 WO2011150543A1 (en) | 2010-06-03 | 2010-11-22 | Injection valve for electric control oil injector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010101235650A CN101818711B (en) | 2010-06-03 | 2010-06-03 | Injection valve of electric control oil injector |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101818711A CN101818711A (en) | 2010-09-01 |
| CN101818711B true CN101818711B (en) | 2012-02-08 |
Family
ID=42653935
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010101235650A Active CN101818711B (en) | 2010-06-03 | 2010-06-03 | Injection valve of electric control oil injector |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN101818711B (en) |
| WO (1) | WO2011150543A1 (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101818711B (en) * | 2010-06-03 | 2012-02-08 | 无锡开普动力有限公司 | Injection valve of electric control oil injector |
| CN102889405A (en) * | 2012-10-12 | 2013-01-23 | 机科发展科技股份有限公司 | High-speed quantitative oil draining valve |
| CN103047062A (en) * | 2013-01-10 | 2013-04-17 | 无锡开普机械有限公司 | Electronic control oil sprayer for injection valve |
| WO2014107978A1 (en) * | 2013-01-10 | 2014-07-17 | 无锡开普机械有限公司 | Injection control flat valve mechanism of electronically controlled fuel injector |
| CN103047060A (en) * | 2013-01-10 | 2013-04-17 | 无锡开普机械有限公司 | Controlled injection valve of electrical oil injector |
| CN109707546A (en) * | 2018-12-29 | 2019-05-03 | 重庆红江机械有限责任公司 | A kind of oil control valve out of electric-controlled fuel injector |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1119885A (en) * | 1993-03-26 | 1996-04-03 | 美国西门子汽车公司 | Impact dampened armature and needle valve assembly |
| US6186472B1 (en) * | 1997-10-10 | 2001-02-13 | Robert Bosch Gmbh | Fuel injection valve |
| CN1064742C (en) * | 1994-07-22 | 2001-04-18 | 罗伯特·博施有限公司 | Valve needle for electromagnetic valve and method of producing same |
| WO2005028851A1 (en) * | 2003-09-19 | 2005-03-31 | Bosch Corporation | Fuel injection valve |
| CN201730718U (en) * | 2010-08-05 | 2011-02-02 | 无锡开普动力有限公司 | Injection valve of electric control fuel injector |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10100390A1 (en) * | 2001-01-05 | 2002-07-25 | Bosch Gmbh Robert | Injector |
| DE102005046122A1 (en) * | 2005-09-27 | 2007-03-29 | Robert Bosch Gmbh | Fuel injecting valve for use as injector, has electrode connection surrounded by sealant in area of slot for sealing slot, where electrode connection is indirectly connected with part of electrode layers |
| CN2926555Y (en) * | 2006-07-07 | 2007-07-25 | 中国船舶重工集团公司第七一一研究所 | Electromagnetic valve of electrically-controlled fuel injector for engine |
| CN101818711B (en) * | 2010-06-03 | 2012-02-08 | 无锡开普动力有限公司 | Injection valve of electric control oil injector |
-
2010
- 2010-06-03 CN CN2010101235650A patent/CN101818711B/en active Active
- 2010-11-22 WO PCT/CN2010/001870 patent/WO2011150543A1/en active Application Filing
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1119885A (en) * | 1993-03-26 | 1996-04-03 | 美国西门子汽车公司 | Impact dampened armature and needle valve assembly |
| CN1064742C (en) * | 1994-07-22 | 2001-04-18 | 罗伯特·博施有限公司 | Valve needle for electromagnetic valve and method of producing same |
| US6186472B1 (en) * | 1997-10-10 | 2001-02-13 | Robert Bosch Gmbh | Fuel injection valve |
| WO2005028851A1 (en) * | 2003-09-19 | 2005-03-31 | Bosch Corporation | Fuel injection valve |
| CN201730718U (en) * | 2010-08-05 | 2011-02-02 | 无锡开普动力有限公司 | Injection valve of electric control fuel injector |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2011150543A1 (en) | 2011-12-08 |
| CN101818711A (en) | 2010-09-01 |
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| C14 | Grant of patent or utility model | ||
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Denomination of invention: Injection valve of electric control oil injector Effective date of registration: 20190426 Granted publication date: 20120208 Pledgee: Bank of Communications Ltd Wuxi branch Pledgor: Kaipu Power Co., Ltd.,Wuxi Registration number: 2019320010018 |
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| PP01 | Preservation of patent right | ||
| PP01 | Preservation of patent right |
Effective date of registration: 20191011 Granted publication date: 20120208 |
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| PD01 | Discharge of preservation of patent |
Date of cancellation: 20201120 Granted publication date: 20120208 |