Normally high solenoid assembly

摘要

A solenoid assembly (10) for providing control over fluid pressure distribution in a transmission, where the solenoid assembly includes a sleeve (26), a valve portion (14) substantially contained within the sleeve, an armature (36) located within the sleeve, a plunger (50) connected to the armature and in contact with a valve, and a housing (30) located within the sleeve in proximity to the armature. The armature is moveable relative to the sleeve and the housing, and the valve portion includes the valve (72), where the movement of the valve is controlled by the movement of the armature. The valve is biased towards an open position to provide a fluid pressure balance between multiple ports (54, 58, 60).