EP 1563184 A1 20050817 - FUEL INJECTION SYSTEM COMPRISING AN INTEGRATED PRESSURE BOOSTER
Title (en)
FUEL INJECTION SYSTEM COMPRISING AN INTEGRATED PRESSURE BOOSTER
Title (de)
KRAFTSTOFFEINSPRITZEINRICHTUNG MIT INTEGRIERTEM DRUCKVERSTÄRKER
Title (fr)
SYSTEME D'INJECTION DE CARBURANT COMPRENANT UN MULTIPLICATEUR DE PRESSION INTEGRE
Publication
Application
Priority
- DE 0302530 W 20030728
- DE 10251932 A 20021108
Abstract (en)
[origin: WO2004042224A1] The invention relates to a fuel injection system for combustion engines. The inventive system comprises a fuel injector (3) fed by a high-pressure fuel source (21). A pressure booster (2) provided with a booster piston (5) is arranged between said fuel injector (3) and high-pressure fuel source (21). The booster piston (5) separates a chamber (9) connected to high-pressure fuel source (21), a high-pressure chamber (11) connected to the fuel injector and a differential pressure chamber (10). The pressure booster (2) is actuated by means of a 2/2-way valve (4) which is connected to the differential pressure chamber (10). According to the invention, the differential pressure chamber (10) and the high-pressure chamber (11) of the pressure booster (2) are refuelled by means of hydraulically controlled non-return valves (26, 31) which are exposed to a hydraulic action by means of a fluidic liaison (25) which exits the high-pressure chamber (11) of the pressure booster (2) when the differential pressure chamber (10) is decompressed.
IPC 1-7
IPC 8 full level
F02M 47/02 (2006.01); F02M 57/02 (2006.01); F02M 59/10 (2006.01); F02M 59/36 (2006.01); F02M 59/46 (2006.01); F02M 63/02 (2006.01); F02M 63/00 (2006.01)
CPC (source: EP US)
F02M 47/027 (2013.01 - EP US); F02M 57/025 (2013.01 - EP US); F02M 59/105 (2013.01 - EP US); F02M 63/0225 (2013.01 - EP US); F02M 63/0015 (2013.01 - EP US); F02M 63/004 (2013.01 - EP US); F02M 63/0043 (2013.01 - EP US)
Citation (search report)
See references of WO 2004042224A1
Designated contracting state (EPC)
DE FR GB
DOCDB simple family (publication)
WO 2004042224 A1 20040521; DE 10251932 A1 20040519; DE 10251932 B4 20070712; EP 1563184 A1 20050817; JP 2006505734 A 20060216; US 2006054138 A1 20060316
DOCDB simple family (application)
DE 0302530 W 20030728; DE 10251932 A 20021108; EP 03810369 A 20030728; JP 2004549046 A 20030728; US 53250305 A 20050425