Patent Number: 6,167,854

Title: Two-part variable valve timing mechanism

Abstract: A new and improved two-part variable valve timing mechanism which has an axially movable quill shaft extending through a hollow camshaft and has one end of the quill shaft directly connected to the camshaft through straight splines and indirectly connected to helical splines so that axial movement of the quill shaft provided by a ball nut transmission located at the other end of the quill shaft serves to angularly reposition the camshaft a predetermined distance upon actuation of an electric stepper motor.

Inventors: Regueiro; Jose F. (Rochester Hills, MI)

Assignee: DaimlerChrysler Corporation

International Classification: F01L 1/344 (20060101); F01L 001/344 ()

Expiration Date: 01/02/2018