Throttle valve especially for high-pressure diesel pumps of...

Details Throttle valve especially for high-pressure diesel pumps of... Throttle valve especially for high-pressure diesel pumps of...

2005-06-28

2005-06-28

Solis, Erick (Department: 3747)

Internal-combustion engines

Charge forming device

With fuel pump

C123S502000

Reexamination Certificate

active

06910465

ABSTRACT:
A throttle valve for a high-pressure diesel pump of an injection device of a motor vehicle has at least one piston movable by a medium under pressure against a counter force and has at least one throttle location. A prestage valve in the form of a pressure control valve having a valve body is provided. The pressure control valve comprises a piezo drive. The piezo drive has at least one piezo element. A tappet is connected to the at least one piezo element. The tappet secures the valve body in a closing position. A bushing is provided in which the piston is slidably guided. The bushing has at least one annular groove into which at least one control bore opens.

REFERENCES:
patent: 4610427 (1986-09-01), Igashira et al.
patent: 4838233 (1989-06-01), Hayashi et al.
patent: 5036821 (1991-08-01), Horiuchi et al.
patent: 5057734 (1991-10-01), Tsuzuki et al.
patent: 6082332 (2000-07-01), Hefler et al.
patent: 6240905 (2001-06-01), Boecking
patent: 2002/0000219 (2002-01-01), Augustin et al.
patent: WO 00/52322 (2000-09-01), None

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