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1. (WO2001000982) PRESSURE BALANCED GAS VALVE

Pub. No.:    WO/2001/000982    International Application No.:    PCT/US2000/017972
Publication Date: Fri Jan 05 00:59:59 CET 2001 International Filing Date: Thu Jun 29 01:59:59 CEST 2000
IPC: F02M 25/07
Applicants: DELPHI TECHNOLOGIES, INC.
Inventors: GLUCHOWSKI, Paul, Ludwig
BIRCANN, Raul
PALMER, Dwight, Orman
GEE, Paul, Timothy
Title: PRESSURE BALANCED GAS VALVE
Abstract:
Relatively simple partially or completely pressure balanced exhaust gas recirculation (EGR) valves (28, 90, 116, 150, 160, 162, 164, 201, 210) are disclosed having relatively low friction and gas forces to be overcome by a solenoid actuator (30, 106, 212). Various means are provided for sealing of the valve members (60, 118, 168) to maintain low leakage of gases through the valve or into the actuator. The valve and actuator may be mounted together for drop in installation into an engine assembly or they may be separately mounted for use in various engine installations. Movable members of the valve and actuator are engaged but physically separate so they may be separately replaced. Various actuators may be applied with various valve assemblies for flexibility in meeting the requirements of alternative engine applications.