CN101194098B - Valve for controlling an injection valve of an internal combustion engine - Google Patents

Valve for controlling an injection valve of an internal combustion engine Download PDF

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Publication number
CN101194098B
CN101194098B CN2006800201269A CN200680020126A CN101194098B CN 101194098 B CN101194098 B CN 101194098B CN 2006800201269 A CN2006800201269 A CN 2006800201269A CN 200680020126 A CN200680020126 A CN 200680020126A CN 101194098 B CN101194098 B CN 101194098B
Authority
CN
China
Prior art keywords
valve
annular shoulder
seal ring
shoulder
doughnut
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.)
Expired - Fee Related
Application number
CN2006800201269A
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Chinese (zh)
Other versions
CN101194098A (en
Inventor
M·伯姆
H·克劳斯
A·贝加诺维奇
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Robert Bosch GmbH
Original Assignee
Robert Bosch GmbH
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Robert Bosch GmbH filed Critical Robert Bosch GmbH
Publication of CN101194098A publication Critical patent/CN101194098A/en
Application granted granted Critical
Publication of CN101194098B publication Critical patent/CN101194098B/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • F02M61/12—Other injectors with elongated valve bodies, i.e. of needle-valve type characterised by the provision of guiding or centring means for valve bodies
    • 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
    • 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
    • F02M55/00—Fuel-injection apparatus characterised by their fuel conduits or their venting means; Arrangements of conduits between fuel tank and pump F02M37/00
    • F02M55/004—Joints; Sealings

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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)

Abstract

The valve (1) according to the invention for controlling an injection valve of an internal combustion engine comprises a valve element (6) which is arranged in a stepped bore (4) of the valve housing (5) with the formation of a high-pressure-side annular space (2) which is sealed with respect to the valve housing (5) by sealing contact of the valve element (6) with a first annular shoulder (8) of the bore (4) and, axially spaced apart therefrom, by a sealing ring (9,9',9''), the sealing ring (9,9',9'') being arranged between an annular shoulder (10) of the valve element (6) and a second annular shoulder (12) of the bore (4), in particular being clamped in with prestress.

Description

The valve that is used for the controlling combustion engine injection valve
Prior art
The present invention relates to the valve that is used for the controlling combustion engine injection valve according to the type of claim 1.
Background technique
This valve is for example open by DE 101 46 743 A1.
On the known solenoid valve of ejecting system (co-rail ejector); form an on high-tension side doughnut between valve chest (injector body) and valve piece, this doughnut is by two sealing positions that separate on axially, i.e. also being sealed by the seal ring of support ring support usually by touching on the other hand by by the sealing of valve piece on valve chest on the one hand.
Summary of the invention
By contrast, the valve with feature of claim 1 according to the present invention has advantage, and promptly the seal ring of installing under preload makes the doughnut sealing immediately after installation.The preferably taper of the annular shoulder of valve piece that preferably tilt and the annular shoulder hole is so that the high pressure in the doughnut is pressed onto seal ring on two annular shoulders.This high pressure is higher, and impacting force is bigger, so the sealing of doughnut (selfsealings effect) better.
Other advantage of technical solution of the present invention and favourable configuration can be by learning in specification, accompanying drawing and claims.
Description of drawings
Different embodiments of the invention shown in the accompanying drawing also are described in detail them in the following description.Shown in the figure:
Fig. 1 is according to first embodiment's of valve of the present invention longitudinal section;
Fig. 2 is according to the detailed view of the amplification of part II among Fig. 1;
That Fig. 3 and Fig. 2 illustrate similarly, according to second embodiment of valve of the present invention; And
That Fig. 4 and Fig. 2 illustrate similarly, according to the 3rd embodiment of valve of the present invention.
Embodiment
Valve 1 shown in Fig. 1 is used for the injection valve (sparger) of controlling combustion engine and has a doughnut 2, and this doughnut is connected to unshowned fuel-high pressure accumulator by a fuel conduit 3 and (is total to rail: Common Rail).
On high-tension side doughnut 2 forms by a columnar metal valve block 6 in the shoulder hole 4 of valve chest 5, this valve piece with a flange 7 hermetically by touch on the first annular shoulder 8 of Fig. 1 middle and upper part in hole 4 and thus downwards axially on partition distance ground by a high-pressure seal ring (O type circle) valve chest 5 sealings relatively.By valve clamping screw (not shown) flange 7 is pressed against on the annular shoulder 8 on top.Seal ring 9 have a trapezoidal cross section and be pressed into the annular shoulder 10 of an inclination of valve piece 6 and a taper annular shoulder 11 of the below in hole 4 between, it is clamped promptly to have preload ground.Because this preload, seal ring 9 just make doughnut 2 sealings immediately under clamped condition.
As shown in Figure 2, two sealing sidewall of seal ring 9 usefulness is abreast by touching on annular shoulder 10,11, because the annular of annular shoulder 10 of Qing Xieing and taper in the embodiment shown shoulder 11 relative longitudinal axis extend with identical angle [alpha], so the sealing circle has the trapezoidal shape of a symmetry in cross section.The outside diameter d of seal ring 9 is less than bore dia D, so that the high pressure (rail pressure) that exists in the doughnut 2 radially inwardly is pressed onto seal ring 9 on the annular shoulder 10,11.Rail pressure is higher, and the sealing bigger and doughnut 2 thus of this impacting force is (selfsealings effect) better.In other words, produce impacting force by the working pressure that has in the doughnut, this impacting force makes seal ring 9 be pressed onto on the annular shoulder 10,11 and is used for the sealing of doughnut 2.
The valve element of a plunger shape of injection valve or the upper end portion of regulating element 12 are directed to and constitute the border in a control room 14 movably in valve piece 6 in the pilot hole 13 of valve piece 6.Control room 14 is connected with doughnut 2 by an input throttle valve 15 and is switched in the valve seat orifice of conical valve seat 17 by an output throttling valve 16, this valve seat is set on the top that deviates from valve element or regulating element 12 distolateral of valve piece 6, is used for and 18 actings in conjunction of valve closure member.
In unshowned valve position of closing-and valve closure member 18 is by touching on valve seat 17 and close thus valve seat orifice in this position, and control room 14 is loaded with rail pressure and valve element or regulating element 12 is moved in the position below it.In the illustrated valve position of opening, valve closure member 18 lifts and discharges valve seat orifice from valve seat 17, and control room 14 releases and valve element or regulating element 12 are moved in the position above it.
Embodiment shown in Fig. 3 only is with difference among Fig. 2: two sealing sidewalls of trapezoidal seal ring 9 are not parallel to the annular shoulder 10,11 that relative longitudinal axis extends with angle [alpha], but longitudinal axis extends with a steeper angle beta relatively.
Difference among embodiment shown in Fig. 4 and Fig. 2 only is: seal ring 9 " is configured to rectangle basically and seals seamed edges by touching on annular shoulder 10,11 with two.

Claims (10)

1. the valve (1) that is used for the controlling combustion engine injection valve, has a valve piece (6), this valve piece is arranged in the shoulder hole (4) of valve chest (5) and is used to form on high-tension side doughnut (2), this doughnut and valve chest (5) passed through the sealing of valve piece (6) on one the first annular shoulder (8) of shoulder hole (4) by touch and by with the seal ring (9 of this annular shoulder axially-spaced distance, 9 ', 9 ") seal; it is characterized in that: seal ring (9; 9 ', 9 ") are clamped between one the second annular shoulder (11) of the annular shoulder (10) of valve piece (6) and shoulder hole (4) with having preload.
2. according to the valve of claim 1, it is characterized in that: the annular shoulder (10) of valve piece (6) tilts, and the second annular shoulder (11) of shoulder hole (4) is taper.
3. according to the valve of claim 1 or 2, it is characterized in that: seal ring (9,9 ') has trapezoidal cross section.
4. according to the valve of claim 2, it is characterized in that: two sealing sidewalls of seal ring (9) reach with the annular shoulder (10) that tilts respectively and annular shoulder (11) the almost parallel ground of taper extends.
5. according to the valve of claim 2, it is characterized in that: two relative longitudinal axis of sealing sidewall of seal ring (9 ') extend with the angle (β) steeper than the annular shoulder (11) of annular shoulder (10) that tilts and taper.
6. according to the valve of claim 2, it is characterized in that: (9 ") upward and with another seal seamed edge by touching on the annular shoulder (11) in taper with a sealing seamed edge by touching at the annular shoulder (10) that tilts to seal ring.
7. according to the valve of claim 6, it is characterized in that: (9 ") have the cross section of essentially rectangular to seal ring.
8. according to the valve of claim 2, it is characterized in that: the annular shoulder (10) of inclination and the annular shoulder (11) of taper longitudinal axis relatively extend with roughly the same angle (α).
9. according to the valve of claim 1, it is characterized in that: seal ring (9,9 ', the external diameter of 9 ") (d) is less than the bore dia (D) of doughnut (2).
10. according to the valve of claim 1, it is characterized in that: valve element that is directed to movably therein by injection valve in the pilot hole (13) of valve piece (6) or regulating element (12) constitute the border in a control room (14), wherein, control room (14) is connected with on high-tension side doughnut (2) by an input throttle valve (15) and is switched in the valve seat orifice of valve seat (17) by an output throttling valve (16), this valve seat is arranged on deviating from valve element or regulating element (12) distolateral of valve piece (6), is used for and movable valve closure member (18) acting in conjunction.
CN2006800201269A 2005-06-09 2006-04-10 Valve for controlling an injection valve of an internal combustion engine Expired - Fee Related CN101194098B (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE102005026513.8 2005-06-09
DE102005026513A DE102005026513A1 (en) 2005-06-09 2005-06-09 Valve for controlling an injection valve of an internal combustion engine
PCT/EP2006/061466 WO2006131411A1 (en) 2005-06-09 2006-04-10 Valve for controlling an injection valve of an internal combustion engine

Publications (2)

Publication Number Publication Date
CN101194098A CN101194098A (en) 2008-06-04
CN101194098B true CN101194098B (en) 2011-01-05

Family

ID=36600206

Family Applications (1)

Application Number Title Priority Date Filing Date
CN2006800201269A Expired - Fee Related CN101194098B (en) 2005-06-09 2006-04-10 Valve for controlling an injection valve of an internal combustion engine

Country Status (5)

Country Link
EP (1) EP1893866B1 (en)
CN (1) CN101194098B (en)
AT (1) ATE440215T1 (en)
DE (2) DE102005026513A1 (en)
WO (1) WO2006131411A1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102007008262A1 (en) * 2007-02-20 2008-08-21 Robert Bosch Gmbh Fuel injection valve for fuel injection in internal combustion engines

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4703914A (en) * 1982-05-13 1987-11-03 Hydrotechnik Gmbh Valve joint for fluid systems
US6302087B1 (en) * 1998-01-22 2001-10-16 Robert Bosch Gmbh Fuel injection valve for internal combustion engines
US6510968B2 (en) * 1999-12-17 2003-01-28 Unisia Jecs Corporation Pressure relief valve for an inhalator

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1395748B1 (en) * 2001-05-21 2005-05-18 Robert Bosch Gmbh High pressure sealing element for injectors
JP2004137915A (en) * 2002-10-15 2004-05-13 Bosch Automotive Systems Corp Sealing construction of fuel injection valve

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4703914A (en) * 1982-05-13 1987-11-03 Hydrotechnik Gmbh Valve joint for fluid systems
US6302087B1 (en) * 1998-01-22 2001-10-16 Robert Bosch Gmbh Fuel injection valve for internal combustion engines
US6510968B2 (en) * 1999-12-17 2003-01-28 Unisia Jecs Corporation Pressure relief valve for an inhalator

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
JP特开平11-230008A 1999.08.24

Also Published As

Publication number Publication date
DE102005026513A1 (en) 2006-12-14
ATE440215T1 (en) 2009-09-15
EP1893866A1 (en) 2008-03-05
DE502006004601D1 (en) 2009-10-01
EP1893866B1 (en) 2009-08-19
WO2006131411A1 (en) 2006-12-14
CN101194098A (en) 2008-06-04

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Granted publication date: 20110105

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