Global Patent Index - EP 1843038 A1

EP 1843038 A1 2007-10-10 - Fuel injector with a conical high pressure housing sealing

Title (en)

Fuel injector with a conical high pressure housing sealing

Title (de)

Kraftstoffinjektor mit einer kegeligen Gehäusehochdruckdichtung

Title (fr)

Injecteur de carburant avec corps à surfaces d'étanchéité coniques haute pression

Publication

EP 1843038 A1 (DE)

Application

EP 06007432 A

Priority

EP 06007432 A

Abstract (en)

The injector has two cylindrical housings (2, 5), which are axially and superimposedly arranged, and a nozzle clamping nut (4). Two adjacent front surfaces of the housings are formed partly as sealing surfaces (8a, 8b) for a high pressure chamber filled with a fuel. The front surfaces are firmly compressed together by the clamping nut. The sealing surfaces lying on one another are conically formed with a preset cone angle (A), or convex/concave sealing surfaces lie on one another with a preset radius or conical/convex sealing surfaces are superimposed with each other.

Abstract (de)

Kraftstoffinjektor, bei dem wenigstens zwei zylinderförmige Gehäuseteile (2,5) an ihren Dichtflächen (8a,8b) mittels einer Düsenspannmutter (4) zusammengefügt sind, um einen mit Kraftstoff gefüllten Hochdruckraum (9) hochdruckfest abzudichten, wird vorgeschlagen, die Dichtflächen (8a,8b) der beiden Gehäuseteile kegelig auszuführen. Dazu werden die beiden Dichtflächen (8a,8b) mit einem vorgegebenen Kegelwinkel (±) passend zueinander ausgeführt. Beim Druckaufbau kann sich dann das weniger steife Gehäuseteil (2) stärker ausdehnen und wird durch die axiale Spannkraft (P v ) der Düsenspannmutter (4) in dieser Position fixiert, auch wenn der Hochdruck wieder abfällt. Eine weitere relative Verschiebung der beiden Dichtflächen ist dann nicht mehr möglich, so dass die Hochdruckdichtung (12) dauerhaft sicher ist.

IPC 8 full level (invention and additional information)

F02M 61/16 (2006.01); F02M 51/06 (2006.01); F02M 63/00 (2006.01)

CPC (invention and additional information)

F02M 63/0026 (2013.01); F02M 51/0603 (2013.01); F02M 61/16 (2013.01); F02M 61/168 (2013.01); F02M 61/167 (2013.01); F02M 2200/16 (2013.01); F02M 2200/702 (2013.01)

Citation (search report)

Designated contracting state (EPC)

DE FR

Designated extension state (EPC)

AL BA HR MK YU

EPO simple patent family

EP 1843038 A1 20071010; EP 1843038 B1 20090318; DE 502006003182 D1 20090430

INPADOC legal status


2017-07-31 [PGFP DE] POSTGRANT: ANNUAL FEES PAID TO NATIONAL OFFICE

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2015-02-27 [PG25 FR] LAPSED IN A CONTRACTING STATE ANNOUNCED VIA POSTGRANT INFORM. FROM NAT. OFFICE TO EPO

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- Free text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

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2015-01-23 [REG FR ST] NOTIFICATION OF LAPSE

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2013-08-30 [PGFP FR] POSTGRANT: ANNUAL FEES PAID TO NATIONAL OFFICE

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2010-02-24 [26N] NO OPPOSITION FILED

- Effective date: 20091221

2009-04-30 [REF] CORRESPONDS TO:

- Document: DE 502006003182 P 20090430

2009-03-18 [AK] DESIGNATED CONTRACTING STATES:

- Kind Code of Ref Document: B1

- Designated State(s): DE FR

2008-06-18 [AKX] PAYMENT OF DESIGNATION FEES

- Designated State(s): DE FR

2008-05-14 [RAP1] TRANSFER OF RIGHTS OF AN EP PUBLISHED APPLICATION

- Owner name: CONTINENTAL AUTOMOTIVE GMBH

2008-01-09 [17Q] FIRST EXAMINATION REPORT

- Effective date: 20071213

2007-12-19 [17P] REQUEST FOR EXAMINATION FILED

- Effective date: 20071106

2007-10-10 [AK] DESIGNATED CONTRACTING STATES:

- Kind Code of Ref Document: A1

- Designated State(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC NL PL PT RO SE SI SK TR

2007-10-10 [AX] REQUEST FOR EXTENSION OF THE EUROPEAN PATENT TO

- Countries: AL BA HR MK YU