EP 0925446 B1 20030903 - RADIAL PISTON PUMP FOR FUEL HIGH-PRESSURE SUPPLY
Title (en)
RADIAL PISTON PUMP FOR FUEL HIGH-PRESSURE SUPPLY
Title (de)
RADIALKOLBENPUMPE ZUR KRAFTSTOFFHOCHDRUCKVERSORGUNG
Title (fr)
POMPE A PISTON RADIAL POUR ALIMENTATION HAUTE PRESSION EN CARBURANT
Publication
Application
Priority
- DE 9801789 W 19980630
- DE 19729791 A 19970711
Abstract (en)
[origin: DE19729791A1] A radial piston pump for fuel high-pressure supply in fuel injection systems of internal combustion engines, in particular a common-rail injection system, has a driving shaft (4) which is mounted in a pump housing (2) and is eccentrically designed or has several cam-like projections around its circumference, and preferably several pistons (12, 132) radially arranged with respect to the driving shaft (4), each in its own cylinder chamber (18, 131), and movable back and forth in the cylinder chamber when the driving shaft (4) rotates. The radial piston pump also has an intake side and a high-pressure side check valve (34, 42, 124) and a component part (16, 134) with a passage (20) which forms the cylinder chamber (18, 131), a closure element (26, 110) being inserted into the outer end of the passage (20) in the radial direction. The check valve (34, 42, 124) on the intake side is integrated in the closure element (26, 110). In order to obtain a more compact radial piston pump, the closure element (26, 110) is closed in a pressure-tight manner with respect to the outside in the longitudinal direction of the passage (20) that forms the cylinder chamber and fuel is supplied to the check valve (34, 42, 124) on the intake side through a fuel supply inlet (50, 138) which extends substantially radially to the longitudinal direction in the component part (16, 134).
IPC 1-7
IPC 8 full level
F02M 59/06 (2006.01); F02M 59/44 (2006.01); F02M 59/46 (2006.01); F02M 63/02 (2006.01); F04B 1/04 (2006.01); F04B 1/047 (2006.01); F04B 1/053 (2006.01); F04B 53/10 (2006.01)
CPC (source: EP US)
F02M 63/0225 (2013.01 - EP US); F04B 1/0421 (2013.01 - EP US); F04B 53/102 (2013.01 - EP US); Y10T 137/7559 (2015.04 - EP US); Y10T 137/7931 (2015.04 - EP US)
Designated contracting state (EPC)
DE FR GB
DOCDB simple family (publication)
DE 19729791 A1 19990114; DE 59809483 D1 20031009; EP 0925446 A1 19990630; EP 0925446 B1 20030903; EP 0925446 B2 20101020; JP 2001500220 A 20010109; JP 4053094 B2 20080227; US 6224350 B1 20010501; WO 9902858 A1 19990121
DOCDB simple family (application)
DE 19729791 A 19970711; DE 59809483 T 19980630; DE 9801789 W 19980630; EP 98941252 A 19980630; JP 50797799 A 19980630; US 25465599 A 19990729