Elektromagnetisch betätigtes Abgasrückführungsventil

摘要

A closed-loop controlled system solenoid actuated EGR valve Ä10Ü includes an engine mount Ä18Ü for attachment to a vehicle engine Ä150Ü, a valve housing Ä14Ü to which the engine mount Ä18Ü is attached, a motor housing Ä12Ü positioned above the valve housing Ä14Ü, and a sensor housing Ä16Ü. The valve housing Ä14Ü includes a valve inlet Ä116Ü adapted to receive engine exhaust gas and a valve outlet Ä124Ü which communicates the engine exhaust gas from the valve inlet Ä116Ü to an engine intake system. The motor housing has a bobbin Ä40Ü, an armature Ä30Ü, and a valve stem Ä36Ü disposed in a bore Ä38Ü formed therein. The valve stem Ä36Ü is in communication with a plunger Ä146Ü extending from the sensor housing Ä16Ü to monitor the position of the valve stem Ä36Ü with respect to the valve seat Ä120Ü. A guide bearing Ä66Ü is positioned in the housing to guide the armature Ä30Ü while a valve stem bearing Ä106Ü is positioned in the valve housing Ä14Ü to contact and position the valve stem Ä36Ü with respect to the valve seat Ä120Ü while a valve opening Ä118Ü is being closed.