EP 1520096 A1 20050406 - COMMON RAIL INJECTION SYSTEM COMPRISING A VARIABLE INJECTOR AND BOOSTER DEVICE
Title (en)
COMMON RAIL INJECTION SYSTEM COMPRISING A VARIABLE INJECTOR AND BOOSTER DEVICE
Title (de)
SPEICHEREINSPRITZSYSTEM MIT VARIODÜSE UND DRUCKÜBERSETZUNGSEINRICHTUNG
Title (fr)
SYSTEME A RAMPE COMMUNE COMPRENANT UNE BUSE VARIABLE ET UN SYSTEME MULTIPLICATEUR DE PRESSION
Publication
Application
Priority
- DE 0301099 W 20030403
- DE 10229417 A 20020629
Abstract (en)
[origin: WO2004003374A1] The invention relates to a fuel injection system for internal combustion engines. A fuel injector (1) is supplied with fuel by means of a high-pressure fuel source (2, 81). A booster (5) is disposed between an injection valve (6) and the high-pressure fuel source (2, 81). Said booster (5) has a booster piston (12) which separates a pressure chamber (11) which can be connected to the high-pressure fuel source (2, 81) from a high-pressure chamber (20) impinging an injection chamber (29) of the fuel injector (1). The injection valve (6) of the fuel injector (1) comprises an injector needle (30) which releases or closes injection openings that point towards a combustion chamber (7). The injector needle (30) comprises a first injector needle element (31) and an additional, second injector needle element (32) that, when controlled depending on the pressure, release or close different injection cross-sections (42, 43) on an injection nozzle (41).
IPC 1-7
IPC 8 full level
F02M 47/00 (2006.01); F02M 45/08 (2006.01); F02M 57/02 (2006.01); F02M 59/10 (2006.01); F02M 63/00 (2006.01)
CPC (source: EP US)
F02M 45/086 (2013.01 - EP US); F02M 57/025 (2013.01 - EP US); F02M 59/105 (2013.01 - EP US); F02M 2200/46 (2013.01 - EP US)
Citation (search report)
See references of WO 2004003374A1
Designated contracting state (EPC)
DE FR GB IT
DOCDB simple family (publication)
WO 2004003374 A1 20040108; DE 10229417 A1 20040115; DE 50303852 D1 20060727; EP 1520096 A1 20050406; EP 1520096 B1 20060614; JP 2005531713 A 20051020; US 2005172935 A1 20050811
DOCDB simple family (application)
DE 0301099 W 20030403; DE 10229417 A 20020629; DE 50303852 T 20030403; EP 03722255 A 20030403; JP 2004516439 A 20030403; US 51740104 A 20041208