Patent ID: 8997702
Filing Date: 2015-04-07
Classification: F01L,F16H,H01F,Y10T

Abstract:
1. An actuator unit of a cam shifting system, the actuator unit mountable on an internal combustion engine or a component thereof and comprising: at least one actuator pin for moving shifting cam units of the cam shifting system into different axial positions via at least one shift groove formed on a periphery of the shifting cam units and cooperating with the actuator pin, actuator pins of the at least one actuator pin being spring-loaded in a direction toward the shifting cam unit, operable by a solenoid unit, and slidably supported in a housing of the actuator unit, the housing of the actuator unit being provided with at least one enlargement in each inner surface facing one of the actuator pins, each enlargement being formed by an annular recess surrounding the respective actuator pin, each annular recess being axially between an adjacent first portion of the housing and an adjacent second portion of the housing and having a larger diameter than the adjacent first portion and the adjacent second portion.