Valve for controlling fluids

Details Valve for controlling fluids Valve for controlling fluids

1998-10-02

2000-12-05

Hepperle, Stephen M.

Valves and valve actuation

Fluid actuated or retarded

Fluid link or column actuator

25112906, F16K 31122

Patent

active

061555320

ABSTRACT:
A valve for controlling fluids, which is provided with a fluid-filled coupling chamber that is disposed between an actuator piston of a piezoelectric actuator and a piston that actuates a valve member. In order to compensate for a leakage in the coupling chamber that is intermittently under high pressure during a switching procedure, a filling valve is provided that is disposed radially on the coupling chamber, but outside the chamber, and this valve monitors an inflow from an inlet conduit that is under ambient pressure in the valve. In this manner, on the one hand, the clearance volume produced by the attachment of the filling valve is very small and on the other hand, the filling valve is independent of the accelerated movements of the pistons, i.e., independent of their acceleration forces. The valve is designated for use in fuel injection devices for internal combustion engines of motor vehicles.

REFERENCES:
patent: 3919989 (1975-11-01), Jarrett et al.
patent: 4022166 (1977-05-01), Bart
patent: 4167373 (1979-09-01), Jarrett et al.
patent: 4681135 (1987-07-01), Tillman
patent: 4728074 (1988-03-01), Igashira et al.
patent: 5209453 (1993-05-01), Aota et al.
patent: 5280773 (1994-01-01), Henkel

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