EP1696119A3 - Fuel injection apparatus with a sealing arrangment - Google Patents

Fuel injection apparatus with a sealing arrangment Download PDF

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Publication number
EP1696119A3
EP1696119A3 EP06001385A EP06001385A EP1696119A3 EP 1696119 A3 EP1696119 A3 EP 1696119A3 EP 06001385 A EP06001385 A EP 06001385A EP 06001385 A EP06001385 A EP 06001385A EP 1696119 A3 EP1696119 A3 EP 1696119A3
Authority
EP
European Patent Office
Prior art keywords
surface pressure
pressure
rings
channel
injection device
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.)
Withdrawn
Application number
EP06001385A
Other languages
German (de)
French (fr)
Other versions
EP1696119A2 (en
Inventor
Maximilian Dr. Kronberger
Dejan Jovovic
Roman Lacsni
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.)
Siemens AG
Original Assignee
Siemens AG
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 Siemens AG filed Critical Siemens AG
Publication of EP1696119A2 publication Critical patent/EP1696119A2/en
Publication of EP1696119A3 publication Critical patent/EP1696119A3/en
Withdrawn legal-status Critical Current

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
    • F02M57/00—Fuel-injectors combined or associated with other devices
    • F02M57/02—Injectors structurally combined with fuel-injection pumps
    • 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
    • F02M59/00—Pumps specially adapted for fuel-injection and not provided for in groups F02M39/00 -F02M57/00, e.g. rotary cylinder-block type of pumps
    • F02M59/44—Details, components parts, or accessories not provided for in, or of interest apart from, the apparatus of groups F02M59/02 - F02M59/42; Pumps having transducers, e.g. to measure displacement of pump rack or piston
    • 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

Abstract

Es wird eine Einspritzvorrichtung angegeben. Besonders vorteilhaft werden bei dieser Dichtungsanordnung zwischen einem Hochdruckbereich und einem umgebenden Niedrigdruckbereich durch O-Ring-Dichtungen in axialer Richtung und metallische Flächenpressung optimale Dichtungsverhältnisse sichergestellt. Durch die Kombination von metallischer Flächenpressung und axialer Ring-Nut wird die Flächenpressung erhöht, und es bietet sich die Möglichkeit, die Leckageflüssigkeit durch einen Kanal einem Niedrigdruckbereich der Einspritzvorrichtung zuzuführen. Erfindungsgemäß wird vermieden, dass sich die Leckageflüssigkeit, d.h. der Kraftstoff mit umgebendem Motoröl mischt, und so sicher gestellt dass dieser Kraftstoff wiederverwendet werden kann. Hierzu ist ein Kanal vorgesehen, welcher eine O-Ring-Nut mit einem Niedrigdruckbereich verbindet. Die Einspritzvorrichtung hat den Vorteil, dass sie einfach zu montieren sind, Beschädigungen des 0-Ringes bei der Montage weitestgehend vermeiden hilft und durch die Kombination von hydraulischen Spalten, mechanischer metallischer Flächenpressung und O-Ringen erst eine Abdichtung durch O-Ringe in axialer Richtung ermöglicht.

Figure imgaf001
An injector is indicated. Particularly advantageous sealing relationships are ensured in this seal arrangement between a high pressure area and a surrounding low pressure range by O-ring seals in the axial direction and metallic surface pressure. The combination of metallic surface pressure and axial ring groove increases the surface pressure, and it is possible to supply the leakage fluid through a channel to a low-pressure region of the injection device. According to the invention it is avoided that the leakage fluid, ie the fuel mixes with surrounding engine oil, and so made sure that this fuel can be reused. For this purpose, a channel is provided, which connects an O-ring groove with a low pressure area. The injection device has the advantage that they are easy to assemble, helps prevent damage to the 0-ring during assembly as much as possible and by the combination of hydraulic gaps, mechanical metal surface pressure and O-rings only allows a seal by O-rings in the axial direction ,
Figure imgaf001
EP06001385A 2005-01-28 2006-01-24 Fuel injection apparatus with a sealing arrangment Withdrawn EP1696119A3 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE200510004069 DE102005004069A1 (en) 2005-01-28 2005-01-28 Injection device e.g. pump-nozzle-injection device, for e.g. diesel engine, has sealing arrangement with O-rings to effect sealing of interface, which includes sealing surface with grooves to accommodate O-rings, at cavity or channel

Publications (2)

Publication Number Publication Date
EP1696119A2 EP1696119A2 (en) 2006-08-30
EP1696119A3 true EP1696119A3 (en) 2007-04-25

Family

ID=36218484

Family Applications (1)

Application Number Title Priority Date Filing Date
EP06001385A Withdrawn EP1696119A3 (en) 2005-01-28 2006-01-24 Fuel injection apparatus with a sealing arrangment

Country Status (2)

Country Link
EP (1) EP1696119A3 (en)
DE (1) DE102005004069A1 (en)

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5433454A (en) * 1991-05-09 1995-07-18 Bostec Engineering, Inc. Penetration limiting gland and metal gasket
US5669612A (en) * 1994-07-13 1997-09-23 Specialist Sealing Limited Metallic seal rings
DE19937677A1 (en) * 1999-08-10 2001-02-22 Siemens Ag Fuel-injection valve with improved sealing surfaces arrangement e.g. for diesel combustion engine
EP1236886A2 (en) * 2001-02-14 2002-09-04 Denso Corporation Arrangement for increasing the sealing surface pressure of fluid conducting system
EP1288486A2 (en) * 2001-09-04 2003-03-05 Robert Bosch Gmbh Leakage channel in a high-pressure fuel system
JP2003097389A (en) * 2001-09-20 2003-04-03 Denso Corp Metal seal device of metal product
EP1447559A1 (en) * 2001-11-02 2004-08-18 Bosch Automotive Systems Corporation Fuel passage sealing structure of fuel injection nozzle

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6394072B1 (en) * 1990-08-31 2002-05-28 Yamaha Hatsudoki Kabushiki Kaisha Fuel injection device for engine
GB9622335D0 (en) * 1996-10-26 1996-12-18 Lucas Ind Plc Injector arrangement
DE19725276A1 (en) * 1997-06-14 1999-01-14 Pasquini Und Kromer Gmbh Arrangement for producing a strip with self-adhesive labels or other materials with parts beneath and for lateral edge guidance
DE19844891A1 (en) 1998-09-30 2000-04-06 Bosch Gmbh Robert Fuel injection valve for internal combustion engines
ITTO20010814A1 (en) * 2001-08-14 2003-02-14 Fiat Ricerche FUEL INJECTOR FOR AN ENDOTHERMAL ENGINE AND RELATED MANUFACTURING METHODS.

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5433454A (en) * 1991-05-09 1995-07-18 Bostec Engineering, Inc. Penetration limiting gland and metal gasket
US5669612A (en) * 1994-07-13 1997-09-23 Specialist Sealing Limited Metallic seal rings
DE19937677A1 (en) * 1999-08-10 2001-02-22 Siemens Ag Fuel-injection valve with improved sealing surfaces arrangement e.g. for diesel combustion engine
EP1236886A2 (en) * 2001-02-14 2002-09-04 Denso Corporation Arrangement for increasing the sealing surface pressure of fluid conducting system
EP1288486A2 (en) * 2001-09-04 2003-03-05 Robert Bosch Gmbh Leakage channel in a high-pressure fuel system
JP2003097389A (en) * 2001-09-20 2003-04-03 Denso Corp Metal seal device of metal product
EP1447559A1 (en) * 2001-11-02 2004-08-18 Bosch Automotive Systems Corporation Fuel passage sealing structure of fuel injection nozzle

Also Published As

Publication number Publication date
EP1696119A2 (en) 2006-08-30
DE102005004069A1 (en) 2006-08-03

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