Reciprocating pump

Details Reciprocating pump Reciprocating pump

1998-02-12

2000-06-20

Dolinar, Andrew M.

Pumps

Expansible chamber type

Valved piston

417273, 92156, 92158, F04B 1053, F04B 904

Patent

active

060770562

ABSTRACT:
The invention relates to a high pressure reciprocating pump, for a fuel injection system of an internal combustion engine, having at least one piston, which is displaceably supported in a piston guide provided in a housing and therein defines a work chamber. Supported in the housing is a drive shaft, on which a crank element is provided on which a stroke ring, is not rotatable in the housing. The crank element is rotatably supported, the stroke ring has a slide bearing face, associated with the piston on which face the piston is supported with a slide face, so that the piston can be acted upon by the drive shaft. To reduce the danger of so-called seizing of the bearing faces moving back and forth on one another when poorly lubricating media such as fuel and in particular gasoline are being pumped, it is provided that a relief chamber, formed by a recess in the slide face disposed on the piston and open toward the slide bearing face on the stroke ring, communicates with the work chamber.

REFERENCES:
patent: 5626466 (1997-05-01), Ruoff
Fluidtechnik von A Bis Z, by H. Ebertshauser, Vereinigte Fachverlage.Krausskopf/Ingenieur-Digest Radialkolbenpumpe pp. 259-260.
Bosch-Hydraulik Informationen und Daten 1970/71; Hydraulik Bosch; Gerate-Funktionsbeschreibung, Pumpen und Motoren; pp. 57 & 64.
Hydraulik in Theorie und Praxis Von Bosch.; Bosch-Hydraulik, Axialkolbenpumpen und-motoren; pp. 59-64, .COPYRGT.1983 Robert Bosch GmbH.

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