Patent ID: 6910465
Filing Date: 2005-06-28
Classification: F02M,F16K

Abstract:
1. A throttle valve for a high-pressure diesel pump of an injection device of a motor vehicle, the throttle valve comprising: at least one piston configured to be moved by a medium under pressure against a counter force and having at least one throttle location; a prestage valve in the form of a pressure control valve having a valve body; an insert having a bore and a valve seat provided at the bore, wherein the valve body is arranged in the insert and rests againts the valve seat in a closing position; the pressure control valve comprising a piezo drive; the piezo drive comprising at least one piezo element; a tappet connected to the at least one piece of element; wherein the tappet secures the valve body in a closing position; a pressure chamber located between the piston and the insert, wherein the at least one throttle location is arranged in front of the valve seat and opens into the pressure chamber.