Valve for the dosed discharge of fluids

Details Valve for the dosed discharge of fluids Valve for the dosed discharge of fluids

1998-01-15

1999-08-03

Weldon, Kevin

Fluid sprinkling, spraying, and diffusing

Unitary plural outlet means

And flow regulation or control of outlets

239584, F16K 3102

Patent

active

059313900

ABSTRACT:
In a valve for the dosed discharge of fluids particularly a fuel injection valve for fuel injection systems of internal combustion engines, the valve includes in an valve housing at the front end of an injector housing a valve structure at a fluid discharge end of the valve housing and a stack of piezo elements disposed in the opposite end of the injector housing and a high pressure fluid passages leads to the fluid discharge end which is isolated from the area in which the stack of piezo elements is disposed and which is in communication with a low pressure drain passage such that the piezo elements are not exposed to the high pressure fluid. Isolation is obtained by a compensation cylinder movably disposed in an annular space between, and in sealing relationship with, the valve housing, the piezo stack being enclosed in a piezo guide tube which is sealingly connected to the valve housing.

REFERENCES:
patent: 4502196 (1985-03-01), Kupper et al.
patent: 4669660 (1987-06-01), Weber et al.
patent: 4750706 (1988-06-01), Schlagmuller
patent: 4863105 (1989-09-01), Bennet
patent: 5031841 (1991-07-01), Schafer
patent: 5479902 (1996-01-01), Wirbeleit
patent: 5810255 (1998-09-01), Itoh et al.

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