EP1893866A1 - Valve for controlling an injection valve of an internal combustion engine - Google Patents
Valve for controlling an injection valve of an internal combustion engineInfo
- Publication number
- EP1893866A1 EP1893866A1 EP06725667A EP06725667A EP1893866A1 EP 1893866 A1 EP1893866 A1 EP 1893866A1 EP 06725667 A EP06725667 A EP 06725667A EP 06725667 A EP06725667 A EP 06725667A EP 1893866 A1 EP1893866 A1 EP 1893866A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- valve
- sealing ring
- annular shoulder
- bore
- sealing
- 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.)
- Granted
Links
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
Definitions
- the invention relates to a valve for controlling an injection valve of an internal combustion engine according to the preamble of patent claim 1.
- Such a valve has become known for example from DE 101 46 743 A1.
- valve according to the invention with the features of claim 1 has the advantage that the mounted under bias sealing ring seals the annulus immediately after installation.
- the annular shoulder of the valve piece is chamfered and the annular shoulder of the bore conical, so that the pressure prevailing in the annulus high pressure presses the sealing ring to the two annular shoulders. The higher the high pressure, the greater the contact pressure and consequently the sealing of the annulus (self-sealing effect).
- FIG. 1 shows a longitudinal section through a first embodiment of the valve according to the invention.
- Fig. 2 is an enlarged detail view according to Il in Fig. 1;
- FIG. 3 shows a second embodiment of the valve according to the invention in a representation analogous to FIG. 2;
- Fig. 4 shows a third embodiment of the valve according to the invention in a
- the valve 1 shown in FIG. 1 is used to control an injection valve (injector) of an internal combustion engine and has an annular space 2, which via a Fuel line 3 is connected to a high-pressure fuel storage (CommonRail), not shown.
- injector injector
- annular space 2 which via a Fuel line 3 is connected to a high-pressure fuel storage (CommonRail), not shown.
- CommonRail high-pressure fuel storage
- the high-pressure side annular space 2 is formed in a stepped bore 4 of the valve housing 5 by a cylindrical, metallic valve piece 6 which sealingly rests with a flange 7 on a first, in Fig.1 upper annular shoulder 8 of the bore 4 and - axially spaced therefrom - Is sealed by a high-pressure sealing ring (O-ring) 9 relative to the valve housing 5.
- a high-pressure sealing ring (O-ring) 9 relative to the valve housing 5.
- the sealing ring 9 has a trapezoidal cross section and is pressed between a tapered annular shoulder 10 of the valve piece 6 and a lower, conical annular shoulder 11 of the bore 4, i. clamped with bias. Already due to this bias seals the sealing ring 9 in the clamped state, the annulus 2 immediately.
- the sealing ring 9 is parallel with its two sealing flanks on the annular shoulders 10, 11 and, since in the illustrated embodiment, the tapered annular shoulder 10 and the conical annular shoulder 11 extend at the same angle ⁇ to the longitudinal axis, in cross section the shape of a symmetrical trapezoid.
- the outer diameter d of the sealing ring 9 is smaller than that
- the upper end of a piston-shaped valve or actuator 12 of the injector is slidably guided in a guide bore 13 of the valve member 6 and limited in the valve piece 6 a control chamber 14.
- the control chamber 14 is connected via an inlet throttle 15 with the annular space 2 and opens via an outlet throttle 16th in a valve seat opening of a conical valve seat 17, which is provided on the valve or actuator 12 facing away from the upper end side of the valve member 6 for cooperation with a valve closure member 18.
- the closed valve position not shown, in which the valve closing member 18 rests against the valve seat 17 and thus closes the valve seat opening, the control chamber 14 is acted upon by rail pressure and thereby the valve or actuator 12 of the injector moved to its lower position.
- the valve closing member 18 is lifted from the valve seat 17 and the valve seat opening released, whereby the control chamber 14 is depressurized and the valve or actuator 12 is moved to its upper position.
- the embodiment shown in FIG. 3 differs solely in that the two sealing flanks of the trapezoidal sealing ring 9 'not parallel to the ⁇ at the angle to the longitudinal axis extending annular shoulders 10, 11, but at a steeper angle ß to the longitudinal axis ,
- the embodiment shown in FIG. 4 differs solely in that the sealing ring 9 "is substantially rectangular in shape and rests with two sealing edges on the annular shoulders 10, 11.
Landscapes
- 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
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
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 |
---|---|
EP1893866A1 true EP1893866A1 (en) | 2008-03-05 |
EP1893866B1 EP1893866B1 (en) | 2009-08-19 |
Family
ID=36600206
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP06725667A Not-in-force EP1893866B1 (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)
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 |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
ATE24594T1 (en) * | 1982-05-13 | 1987-01-15 | Hydrotechnik Gmbh | VALVE COUPLING FOR FLUIDIC SYSTEMS. |
DE19802244A1 (en) * | 1998-01-22 | 1999-07-29 | Bosch Gmbh Robert | Fuel injection valve for IC engines |
JP3486383B2 (en) * | 1999-12-17 | 2004-01-13 | 株式会社日立ユニシアオートモティブ | Gas injection valve |
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 |
-
2005
- 2005-06-09 DE DE102005026513A patent/DE102005026513A1/en not_active Withdrawn
-
2006
- 2006-04-10 DE DE502006004601T patent/DE502006004601D1/en active Active
- 2006-04-10 CN CN2006800201269A patent/CN101194098B/en not_active Expired - Fee Related
- 2006-04-10 AT AT06725667T patent/ATE440215T1/en active
- 2006-04-10 WO PCT/EP2006/061466 patent/WO2006131411A1/en active Application Filing
- 2006-04-10 EP EP06725667A patent/EP1893866B1/en not_active Not-in-force
Non-Patent Citations (1)
Title |
---|
See references of WO2006131411A1 * |
Also Published As
Publication number | Publication date |
---|---|
DE102005026513A1 (en) | 2006-12-14 |
ATE440215T1 (en) | 2009-09-15 |
DE502006004601D1 (en) | 2009-10-01 |
EP1893866B1 (en) | 2009-08-19 |
CN101194098B (en) | 2011-01-05 |
WO2006131411A1 (en) | 2006-12-14 |
CN101194098A (en) | 2008-06-04 |
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