Patent ID: 8667937
Filing Date: 2014-03-11
Classification: F01L,F02D

Abstract:
1. A system for sensing a relative angular difference between first and second rotating members, the system comprising: a first target wheel having an opening, the first target wheel being rotatable about an axis of rotation to move the opening along a generally circular path within a plane generally perpendicular to the axis of rotation; a second target wheel adjacent the first target wheel and being rotatable about the axis of rotation, the second target wheel having a second projection, the second projection projecting into the opening, the second projection being rotatable along the generally circular path and about the axis of rotation; a sensor adjacent the generally circular path for sensing movement of the opening and the second projection past the sensor; and a cam phaser having a lobed stator and a vaned rotor, the first target wheel being secured to one of the lobed stator and the vaned rotor, the second target wheel being secured to another of the lobed stator and the vaned rotor.