EP 1809895 B1 20111012 - FUEL INJECTION DEVICE
Title (en)
FUEL INJECTION DEVICE
Title (de)
KRAFTSTOFFEINSPRITZEINRICHTUNG
Title (fr)
DISPOSITIF D'INJECTION DE CARBURANT
Publication
Application
Priority
- EP 2005055350 W 20051019
- DE 102004053422 A 20041105
Abstract (en)
[origin: US2008121735A1] An apparatus for injecting fuel into an internal combustion engine having a fuel injector acted on with highly pressurized fuel actuated by means of a metering valve device that is able to control the pressure in a pressure booster control chamber so that in a pressure booster pressure chamber delimited by a pressure booster piston which can be filled via a check valve with high-pressure fuel and communicates with an injection valve member pressure chamber, the pressure booster piston increases the pressure, causing an injection valve member for injecting fuel to open. To assure a correct injection quantity even if an abrupt pressure drop occurs in the high-pressure fuel source, the pressure booster piston is situated and designed so that if a pressure drop occurs in the high-pressure fuel source, then starting from its neutral position, the pressure booster piston has the capacity to execute a pressure compensation movement by means of which the pressure in the pressure booster pressure chamber is adapted to the pressure of the high-pressure fuel source.
IPC 8 full level
F02M 57/02 (2006.01); F02M 59/36 (2006.01)
CPC (source: EP US)
F02M 57/025 (2013.01 - EP US); F02M 57/026 (2013.01 - EP US); F02M 59/366 (2013.01 - EP US); F02M 2200/306 (2013.01 - EP US); F02M 2200/50 (2013.01 - EP US)
Designated contracting state (EPC)
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
DOCDB simple family (publication)
US 2008121735 A1 20080529; US 7926736 B2 20110419; AT E528500 T1 20111015; DE 102004053422 A1 20060511; EP 1809895 A1 20070725; EP 1809895 B1 20111012; JP 2008519202 A 20080605; WO 2006048375 A1 20060511
DOCDB simple family (application)
US 66711905 A 20051019; AT 05803292 T 20051019; DE 102004053422 A 20041105; EP 05803292 A 20051019; EP 2005055350 W 20051019; JP 2007539564 A 20051019