CN108397325A - A kind of common-rail injector throttling control valve - Google Patents
A kind of common-rail injector throttling control valve Download PDFInfo
- Publication number
- CN108397325A CN108397325A CN201810135971.5A CN201810135971A CN108397325A CN 108397325 A CN108397325 A CN 108397325A CN 201810135971 A CN201810135971 A CN 201810135971A CN 108397325 A CN108397325 A CN 108397325A
- Authority
- CN
- China
- Prior art keywords
- valve
- spring
- needle
- common
- rail injector
- 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
Links
- 238000007789 sealing Methods 0.000 claims 1
- 230000004044 response Effects 0.000 abstract description 5
- 239000003921 oil Substances 0.000 description 13
- 239000000446 fuel Substances 0.000 description 8
- 239000000295 fuel oil Substances 0.000 description 6
- 238000005516 engineering process Methods 0.000 description 2
- 238000003780 insertion Methods 0.000 description 2
- 230000037431 insertion Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 239000007921 spray Substances 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
Classifications
-
- 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
-
- 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
- F02M61/20—Closing valves mechanically, e.g. arrangements of springs or weights or permanent magnets; Damping of valve lift
Landscapes
- 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 present invention relates to common-rail injector technical fields, specifically disclose a kind of common-rail injector throttling control valve, wherein the common-rail injector throttling control valve includes：Ball sealer, throttle valve seat, nozzle needle valve body, needle-valve, spring and spring base, the ball sealer, throttle valve seat, nozzle needle valve body and needle-valve surround control chamber jointly, the spring and spring base are located in the control chamber, the spring base is located on the inner cavity bottom face of the throttle valve seat, oil duct is arranged in the intermediate of the spring base, the oil duct is connected to the oil outlet of the throttle valve seat, one end of the spring is contacted with the needle-valve, and the other end of the spring is connect with the spring base.Common-rail injector throttling control valve provided by the invention can improve the response speed of atomizer.
Description
Technical field
The present invention relates to common-rail injector technical field more particularly to a kind of common-rail injector throttling control valves.
Background technology
Control valve is the important composition component on electromagnetic valve type fuel injector.The common control valve form of fuel injector at present, it is main
If by a control piston, transfers force on needle-valve and controlled, such as the ball valve of Bosch companies（US7866575
B2）, Denso companies flat valve（US2012/0012680 A1）, etc..The control valve of this technology type, fluid power variation
It is not to directly act on needle-valve, therefore, control course of injection has certain delay.In addition, control valve when opening, is controlled
Fuel oil in chamber processed is to flow to drainback passage by oil outlet always, and this leakage is undoubtedly a kind of energy loss.But mesh
Preceding most of injector control valve structures are made of parts such as armature, armature lever, spring and control valve seats, in fuel oil control chamber
Fuel oil hydraulic coupling by control piston transmission act on injector valve, keep fuel injector general reaction not rapid.In addition, when control
When valve processed is opened, fuel oil is flowing out always, and energy has loss.
Therefore, how to provide a kind of control valve that can improve atomizer response speed becomes those skilled in the art urgently
The technical issues of solution.
Invention content
The present invention is directed at least solve one of the technical problems existing in the prior art, a kind of common-rail injector throttling is provided
Control valve, to solve the problems of the prior art.
As one aspect of the present invention, a kind of common-rail injector throttling control valve is provided, wherein the common-rail injector
Throttling control valve includes：Ball sealer, throttle valve seat, nozzle needle valve body, needle-valve, spring and spring base, the ball sealer, throttling
Valve seat, nozzle needle valve body and needle-valve surround control chamber jointly, and the spring and spring base are located in the control chamber, the bullet
Spring abutment is located on the inner cavity bottom face of the throttle valve seat, and oil duct, the oil duct and the section is arranged in the intermediate of the spring base
The oil outlet connection of valve seat is flowed, one end of the spring is contacted with the needle-valve, the other end of the spring and the spring base
Connection.
Preferably, the lower face of the spring base at a distance from the tail end face of the needle-valve 0.25mm ~ 0.5mm it
Between.
Preferably, the tail end face of the needle-valve is arc surface.
Preferably, the common-rail injector throttling control valve further includes adjust pad, and the adjust pad is located at the needle
Between valve and the spring.
Common-rail injector throttling control valve provided by the invention directly acts on oil spout by controlling the spring in valve insertion
Mouth needle-valve need not be transmitted by controlling piston, therefore can improve the response speed of atomizer, realize rapid control spray
Penetrate process.
Description of the drawings
Attached drawing is to be used to provide further understanding of the present invention, an and part for constitution instruction, with following tool
Body embodiment is used to explain the present invention together, but is not construed as limiting the invention.In the accompanying drawings：
Fig. 1 is the structural schematic diagram of common-rail injector throttling control valve provided by the invention.
Specific implementation mode
The specific implementation mode of the present invention is described in detail below in conjunction with attached drawing.It should be understood that this place is retouched
The specific implementation mode stated is merely to illustrate and explain the present invention, and is not intended to restrict the invention.
As one aspect of the present invention, a kind of common-rail injector throttling control valve is provided, wherein as shown in Figure 1, described
Common-rail injector throttling control valve includes：Ball sealer 1, throttle valve seat 2, nozzle needle valve body 3, needle-valve 4, spring 6 and spring base
7, the ball sealer 1, throttle valve seat 2, nozzle needle valve body 3 and needle-valve 4 surround control chamber, the spring 6 and spring base 7 jointly
In the control chamber, the spring base 7 is located on the inner cavity bottom face of the throttle valve seat 2, the centre of the spring base 7
Oil duct is set, the oil duct is connected to the oil outlet 9 of the throttle valve seat 2, and one end of the spring 6 is contacted with the needle-valve 4,
The other end of the spring 6 is connect with the spring base 7.
Common-rail injector throttling control valve provided by the invention directly acts on oil spout by controlling the spring in valve insertion
Mouth needle-valve need not be transmitted by controlling piston, therefore can improve the response speed of atomizer, realize rapid control spray
Penetrate process.
It should be noted that fuel oil is entered by the fuel feed hole 8 of throttle valve seat 2, then flowed out by oil outlet 9.
In order to stop fuel leakage, energy loss, the aft end of the lower face of the spring base 7 and the needle-valve 4 are reduced
The distance in face is between 0.25mm ~ 0.5mm.
It is understood that lifting the reduction of rear tail end face and 7 lower end interplanar distance of spring base by needle-valve 4 until being
Zero, throttling is formed, stops fuel leakage in control chamber, reduces energy loss, improves the jet performance of fuel injector entirety.
Preferably, in order to work as after the needle-valve 4 lifts, the tail end face of needle-valve 4 can preferably be matched with spring base 7,
The tail end face of the needle-valve 4 is arc surface.
Preferably, the common-rail injector throttling control valve further includes adjust pad 5, and the adjust pad 5 is located at described
Between needle-valve 4 and the spring 6.
It is understood that the spring 6 contacts by adjusting gasket 4 with the needle-valve 4, it being capable of effective adjustment spring 6
With the contact of needle-valve 4.
Common-rail injector throttling control valve provided by the invention, control chamber is interior to be arranged spring 6, and the lower end of spring 6 passes through tune
Whole gasket 5 is seated on needle-valve 4, and the upper end of spring 6 is connected with spring base 7；Spring base 7 is positioned over the interior bottom of chamber of throttle valve seat 2
On end face；There is oil duct in the centre of spring base 7, is connected with the oil outlet 9 of throttle valve seat 2, and spring 6 directly acts on needle-valve 4,
The response speed of atomizer can be improved.
Rationally the lower face of setting spring base 7 is at a distance from the tail end face of needle-valve 4 so that when needle-valve 4 lifts, needle-valve 4
Tail end face can be contacted with the lower face of spring base 7, blocking fuel oil flowed out by oil duct, can effectively reduce fuel leakage, subtract
Few energy loss.
It is understood that the principle that embodiment of above is intended to be merely illustrative of the present and the exemplary implementation that uses
Mode, however the present invention is not limited thereto.For those skilled in the art, in the essence for not departing from the present invention
In the case of refreshing and essence, various changes and modifications can be made therein, these variations and modifications are also considered as protection scope of the present invention.
Claims (4)
1. a kind of common-rail injector throttling control valve, which is characterized in that the common-rail injector throttling control valve includes：Sealing
Ball, throttle valve seat, nozzle needle valve body, needle-valve, spring and spring base, the ball sealer, throttle valve seat, nozzle needle valve body and
Needle-valve surrounds control chamber jointly, and the spring and spring base are located in the control chamber, and the spring base is located at the throttle valve
On the inner cavity bottom face of seat, oil duct is arranged in the intermediate of the spring base, and the oil duct is connected to the oil outlet of the throttle valve seat,
One end of the spring is contacted with the needle-valve, and the other end of the spring is connect with the spring base.
2. common-rail injector throttling control valve according to claim 1, which is characterized in that the lower face of the spring base with
The distance of the tail end face of the needle-valve is between 0.25mm ~ 0.5mm.
3. common-rail injector throttling control valve according to claim 2, which is characterized in that the tail end face of the needle-valve is
Arc surface.
4. common-rail injector throttling control valve as claimed in any of claims 1 to 3, which is characterized in that described total
Rail injector throttling control valve further includes adjust pad, and the adjust pad is between the needle-valve and the spring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810135971.5A CN108397325A (en) | 2018-02-09 | 2018-02-09 | A kind of common-rail injector throttling control valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810135971.5A CN108397325A (en) | 2018-02-09 | 2018-02-09 | A kind of common-rail injector throttling control valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108397325A true CN108397325A (en) | 2018-08-14 |
Family
ID=63096032
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810135971.5A Pending CN108397325A (en) | 2018-02-09 | 2018-02-09 | A kind of common-rail injector throttling control valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108397325A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111577498A (en) * | 2020-05-18 | 2020-08-25 | 上海工程技术大学 | A common rail injector based on the principle of two-position and three-way |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5551391A (en) * | 1988-02-03 | 1996-09-03 | Servojet Electronic Systems, Ltd. | Accumulator fuel injection system |
| US6705551B1 (en) * | 1999-08-04 | 2004-03-16 | Robert Bosch Gmbh | Common rail injector |
| US20050035212A1 (en) * | 2003-08-14 | 2005-02-17 | Nadja Eisenmenger | Fuel injection system for internal combustion engines |
| CN103644056A (en) * | 2013-12-05 | 2014-03-19 | 中国第一汽车股份有限公司无锡油泵油嘴研究所 | Common rail system oil atomizer |
| CN104533683A (en) * | 2014-11-26 | 2015-04-22 | 中国北方发动机研究所(天津) | High-pressure co-rail oil sprayer sliding valve structure |
| CN205478049U (en) * | 2016-03-13 | 2016-08-17 | 聊城科瑞汽车零部件有限公司 | Common -rail oil injector assembly |
| CN106050498A (en) * | 2016-05-27 | 2016-10-26 | 中国第汽车股份有限公司无锡油泵油嘴研究所 | A Solenoid Valve Submerged Fuel Injector |
| CN107061088A (en) * | 2016-12-12 | 2017-08-18 | 中国第汽车股份有限公司 | A kind of New Common Rail fuel injector |
-
2018
- 2018-02-09 CN CN201810135971.5A patent/CN108397325A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5551391A (en) * | 1988-02-03 | 1996-09-03 | Servojet Electronic Systems, Ltd. | Accumulator fuel injection system |
| US6705551B1 (en) * | 1999-08-04 | 2004-03-16 | Robert Bosch Gmbh | Common rail injector |
| US20050035212A1 (en) * | 2003-08-14 | 2005-02-17 | Nadja Eisenmenger | Fuel injection system for internal combustion engines |
| CN103644056A (en) * | 2013-12-05 | 2014-03-19 | 中国第一汽车股份有限公司无锡油泵油嘴研究所 | Common rail system oil atomizer |
| CN104533683A (en) * | 2014-11-26 | 2015-04-22 | 中国北方发动机研究所(天津) | High-pressure co-rail oil sprayer sliding valve structure |
| CN205478049U (en) * | 2016-03-13 | 2016-08-17 | 聊城科瑞汽车零部件有限公司 | Common -rail oil injector assembly |
| CN106050498A (en) * | 2016-05-27 | 2016-10-26 | 中国第汽车股份有限公司无锡油泵油嘴研究所 | A Solenoid Valve Submerged Fuel Injector |
| CN107061088A (en) * | 2016-12-12 | 2017-08-18 | 中国第汽车股份有限公司 | A kind of New Common Rail fuel injector |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111577498A (en) * | 2020-05-18 | 2020-08-25 | 上海工程技术大学 | A common rail injector based on the principle of two-position and three-way |
| CN111577498B (en) * | 2020-05-18 | 2021-12-14 | 上海工程技术大学 | Common rail oil injector based on two-position three-way principle |
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|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20180814 |
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| RJ01 | Rejection of invention patent application after publication |