James G Tuttle

US Patent:

8516981, Aug 27, 2013

Filed:

Oct 28, 2009

Appl. No.:

12/607148

Inventors:

Robert Lionel Jacques - Troy MI, US
James Tuttle - Rochester Hills MI, US

International Classification:

F01L 1/34

US Classification:

123 9017

Abstract:

A cam phaser assembly may include a stator assembly, a rotor assembly, and a lock assembly. The stator assembly may be rotationally driven by an engine crankshaft. The rotor assembly may be engaged with the stator assembly and fixed for rotation with an engine camshaft. The rotor assembly may include a radially extending vane located within a recess of the stator assembly to define advance and retard chambers receiving pressurized fluid to rotationally displace the rotor assembly. The lock assembly may be engaged with the stator assembly and the rotor assembly during first and second operating conditions. The lock assembly may include a lock pin mechanically securing the rotor assembly in a rotationally advanced position relative to the stator assembly during the first operating condition and mechanically securing the rotor assembly in a rotationally retarded position relative to the stator assembly during the second operating condition.