Cam shaft timing control device
Device for varying engine valve timing
Arrangement for the relative angular position change of two shafts drivingly connected with each other, especially between a crankshaft supported in an engine housing of an internal combustion engine and a cam shaft
Variable phase and oscillatory drives
Sealed camshaft phase change device
Valve timing control device for use in internal combustion engine Patent #: 4862843
ApplicationNo. 554033 filed on 07/17/1990
US Classes:192/45.1, Wedging pawl or block123/90.15, With means for varying timing464/160COUPLING FACILITATES RELATIVE ROTARY DISPLACEMENT BETWEEN COUPLED MEMBERS
ExaminersPrimary: Bonck, Rodney H.
Attorney, Agent or Firm
Foreign Patent References
International ClassesF01L 031/00
AbstractA device (10) for varying the angular phase relationship between a camshaft (12) and a crankshaft (not shown) in response to a control signal including a drive member (18) rotating synchronously with an engine crankshaft, a driven member (16) synchronously rotating with the camshaft on a common axis with the drive member. A coupling assembly (42) interlinks the two members and includes an actuator element (76) positionable to selectively vary the phase relationship between the members. An energy storage mechanism (100) including an inertia member (106) and a spring (104) converts kinetic energy from transitory speed differentials between the driven and inertia members to potential energy for selective release by a latch mechanism (144) in driving connection between the energy storage mechanism and the actuator element.