EP 2156050 A1 20100224 - PRESSURE BOOSTING SYSTEM FOR AT LEAST ONE FUEL INJECTOR
Title (en)
PRESSURE BOOSTING SYSTEM FOR AT LEAST ONE FUEL INJECTOR
Title (de)
DRUCKVERSTÄRKUNGSSYSTEM FÜR MINDESTENS EINEN KRAFTSTOFFINJEKTOR
Title (fr)
SYSTÈME D'AMPLIFICATION DE PRESSION POUR AU MOINS UN INJECTEUR DE CARBURANT
Publication
Application
Priority
- EP 2008054531 W 20080415
- DE 102007021326 A 20070507
Abstract (en)
[origin: WO2008135349A1] The invention relates to a pressure boosting system for at least one fuel injector of a high pressure injection system of an internal combustion engine, having a hydraulic pressure booster (16) that is actuated by a control valve (26). The hydraulic pressure booster is configured with a pressure boosting piston (32), which comprises a first pressure booster piston part (54) having a diameter D<SUB>21</SUB> and a second pressure booster piston part (56) having a diameter D<SUB>22</SUB>, wherein the diameter D<SUB>21</SUB> is greater than the diameter D<SUB>22</SUB>. The pressure booster piston (32) is disposed within a hydraulic accumulator chamber (48), onto which pressure is applied, together with the first pressure booster piston part (54) having the greater diameter D<SUB>21</SUB>, wherein the accumulator chamber in turn is configured within a base body (30). The base body (30) has a piston guide body (36) for at least one of the pressure booster piston parts (54, 56). The piston guide body (36) is at least partially surrounded by an annular space (49), which is part of the hydraulic accumulator chamber (48).
IPC 8 full level
F02M 59/10 (2006.01); F02M 63/02 (2006.01)
CPC (source: EP US)
F02M 59/105 (2013.01 - EP US); F02M 63/027 (2013.01 - EP US); F02M 57/026 (2013.01 - EP US)
Citation (search report)
See references of WO 2008135349A1
Designated contracting state (EPC)
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MT NL NO PL PT RO SE SI SK TR
Designated extension state (EPC)
AL BA MK RS
DOCDB simple family (publication)
DE 102007021326 A1 20081113; CN 101680412 A 20100324; CN 101680412 B 20120104; EP 2156050 A1 20100224; EP 2156050 B1 20120815; JP 2010526248 A 20100729; JP 4848047 B2 20111228; US 2010212636 A1 20100826; US 8161947 B2 20120424; WO 2008135349 A1 20081113
DOCDB simple family (application)
DE 102007021326 A 20070507; CN 200880015122 A 20080415; EP 08749561 A 20080415; EP 2008054531 W 20080415; JP 2010506878 A 20080415; US 59939208 A 20080415