Patent ID: 6715475
Filing Date: 2004-04-06
Classification: F02M,Y10T

Abstract:
A method of controlling an exhaust gas recirculation valve in an engine, the valve having a housing including a first port communicating with an exhaust port of the engine, the first port being in fluid communication with a second port, a closure member being disposed in the housing in a closed position along a longitudinal axis occluding fluid communication between the first port and the second port and one of a plurality of positions permitting fluid communication therebetween, an electrical actuator having a first core, a magnetic member and a second core aligned along the longitudinal axis, and a bobbin assembly supporting a coil, the bobbin assembly being coupled to the closure member, the method comprising:maintaining the closure member in the closed position upon de-energization of the coil; and moving the bobbin assembly along the longitudinal axis within a volume outside of a radial perimeter of the magnetic member with respect to the longitudinal axis so as to move the closure member along the longitudinal axis.