Solenoid actuator assembly

摘要

The improved solenoid actuator assembly of the present invention includes a solenoid stator assembly positioned in an actuator housing and a flux dissipation reducing feature which minimizes flux leakage into the housing thereby maximizing the attractive force and minimizing the response time. The flux dissipation reducing feature includes a slot formed in the housing adjacent each outer face of the solenoid stator pole pieces thereby avoiding a metallic housing wall into which leakage may occur. The slots also permit the cross sectional area of the pole pieces to be maximized thereby increasing the available attractive force. The solenoid stator assembly requires only a single housing which functions to directly support the laminate stack assembly without an intermediate housing while also functioning as an injector body component subject to the compressive assembly load of the injector and including high pressure fuel passages. As a result, the present solenoid actuator assembly is compact, inexpensive and functions to optimally maximize attractive forces while reducing response time.