Radial piston pump

Details Radial piston pump Radial piston pump

2005-01-04

2005-01-04

Miller, Carl S. (Department: 3747)

Internal-combustion engines

Charge forming device

Fuel injection system

C123S495000, C092S158000

Reexamination Certificate

active

06837218

ABSTRACT:
The invention relates to a radial piston pump for generating high fuel pressure in fuel injection systems of internal combustion engines, in particular in a common rail injection system, having a driveshaft, supported in a housing, that has an eccentrically embodied shaft portion which cooperates with preferably a plurality of pistons capable of reciprocating radially, relative to the driveshaft, in a respective element bore, in order to aspirate fuel and subject it to high pressure in a high-pressure region. In order to increase the efficiency and lengthen the service life, in the outer jacket face (3) of the pistons and/or the inner jacket face of the element bore, a structure in the μm range is formed.

REFERENCES:
patent: 4516475 (1985-05-01), Fricke
patent: 5313919 (1994-05-01), Rao et al.
patent: 5315970 (1994-05-01), Rao et al.
patent: 5983863 (1999-11-01), Cavanagh et al.
patent: 6378499 (2002-04-01), Shimayama et al.
patent: 6510843 (2003-01-01), De Matthaeis
patent: 19847044 (2000-04-01), None

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