EP 0925445 A1 19990630 - RADIAL PISTON PUMP FOR HIGH-PRESSURE FUEL SUPPLY
Title (en)
RADIAL PISTON PUMP FOR HIGH-PRESSURE FUEL SUPPLY
Title (de)
RADIALKOLBENPUMPE ZUR KRAFTSTOFFHOCHDRUCKVERSORGUNG
Title (fr)
POMPE A PISTON RADIAL POUR ALIMENTATION HAUTE PRESSION EN CARBURANT
Publication
Application
Priority
- DE 9801790 W 19980630
- DE 19729792 A 19970711
- DE 19814477 A 19980401
Abstract (en)
[origin: WO9902857A2] A radial piston pump for high-pressure fuel supply in fuel injection systems of internal combustion engines, in particular in a common rail injection system, has an input shaft (4) mounted in a pump housing (2), and preferably several pistons (10) which are radially arranged with respect to the input shaft (4), each in its cylinder chamber (12), and which can move back and forth in the radial direction. A metallic insert (22) which forms the cylinder chamber (12) is provided for each piston (10) within the housing (2) and oriented radially with respect to the input shaft (4). The insert (22) communicates with the suction side (40) and with the high-pressure side (42). In order to define the component parts in a statically exact manner, the pump is designed such that each insert (22) is arranged between two flange-shaped metallic housing parts (48, 50) with supporting surfaces (24, 24; 52, 54) perpendicular to the input shaft and is supported on said surfaces. Each insert (22) has a fuel inlet (32) and a fuel outlet (34) which open in the region of the supporting surfaces (24, 26) and are aligned with another inlet and outlet (58, 60) in the housing parts (48, 50). The flange-shaped housing parts (48, 50) are clamped together, with the intercalated inserts (22), so that the supporting surfaces (24, 26; 52, 54) of the inserts (22) and housing parts (48, 50) are sealed in a high-pressure-tight manner without any intercalated packing elements.
IPC 1-7
IPC 8 full level
F02M 59/06 (2006.01); F02M 59/10 (2006.01); F02M 59/44 (2006.01); F02M 63/02 (2006.01); F04B 1/04 (2006.01); F04B 1/047 (2006.01); F04B 1/053 (2006.01)
CPC (source: EP US)
F02M 59/06 (2013.01 - EP US); F02M 59/44 (2013.01 - EP US); F02M 63/0225 (2013.01 - EP US); F04B 1/0408 (2013.01 - EP US); F04B 1/0448 (2013.01 - EP US)
Citation (search report)
See references of WO 9902857A2
Designated contracting state (EPC)
DE FR GB
DOCDB simple family (publication)
WO 9902857 A2 19990121; WO 9902857 A3 19990401; EP 0925445 A1 19990630; EP 0925445 B1 20030910; JP 2001506343 A 20010515; US 6238189 B1 20010529
DOCDB simple family (application)
DE 9801790 W 19980630; EP 98941253 A 19980630; JP 50797899 A 19980630; US 25444899 A 19990310