Radial piston pump

Details Radial piston pump Radial piston pump

2005-01-18

2005-01-18

Yu, Justine R. (Department: 3746)

Pumps

Three or more cylinders arranged in parallel, radial, or...

Radial cylinders

C417S490000, C417S493000, C417S505000

Reexamination Certificate

active

06843641

ABSTRACT:
A radial piston pump for generating high fuel pressure in common rail fuel injection systems of internal combustion engines having a drive shaft which is rotatably supported in a pump housing and is embodied eccentrically, and having a plurality of pistons, in particular three, each disposed in a respective element bore radially relative to the drive shaft, which are movable radially back and forth in the respective element bore by rotation of the drive shaft and each define one cylinder chamber, which communicates via a suction valve with a low-pressure chamber. Precisely one suction valve is controlled such that it opens and closes as a function of the angle of rotation of the drive shaft.

REFERENCES:
patent: 2336526 (1943-12-01), Bristol
patent: 3709639 (1973-01-01), Suda et al.
patent: 4538580 (1985-09-01), Straubel et al.
patent: 4777921 (1988-10-01), Fujisawa et al.
patent: 5156531 (1992-10-01), Schmid et al.
patent: 5167493 (1992-12-01), Kobari
patent: 5697343 (1997-12-01), Isozumi et al.
patent: 5701873 (1997-12-01), Schneider
patent: 197 09 586 (1998-09-01), None
patent: WO 99 02857 (1999-01-01), None

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