Pressure Control Valve, Especially for High Pressure Diesel Pumps of Injection Devices of Motor Vehicles
AssigneeHydraulik-Ring GmbH
InventorsAlfred Trzmiel, Rolf Neuhaus, Friedrich Zapf
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Abstract
A pressure control valve for a high-pressure diesel pump of an injection device of a motor vehicle has a valve body and a piezo drive with a tappet securing the valve body in a closed position. The valve body in the closed position closes off a bore, containing a medium under pressure, relative to a pressure-relief bore. The piezo drive has at least one piezo element connected to the tappet. The piezo drive is mounted in a pump housing of the high-pressure diesel pump. A screw element receives the piezo drive and is used to screw the piezo drive into the mounting chamber of the pump housing.
Claims7
A pressure control valve for a high-pressure diesel pump of an injection device of a motor vehicle, the pressure control valve comprising:
- a valve body (6);
- a piezo drive (12) comprising a tappet (11) configured to secure the valve body (6) in a closed position, wherein the valve body (6) in the closed position closes off a bore (4), containing a medium under pressure, relative to a pressure-relief bore (5);
- wherein the piezo drive (12) comprises at least one piezo element connected to the tappet (11).
Dependencies are inferred from the claim text.