Patent ID: 6325031
Filing Date: 2001-12-04
Classification: F01L

Abstract:
An internal combustion engine and cam shaft timing drive comprising an output shaft that is driven by combustion occurring in at least one combustion chamber of said engine, a first cam shaft operating at least one valve associated with said combustion chamber, a second cam shaft operating at least a second valve associated with said combustion chamber, said first and said second cam shafts being journalled at one end thereof by a bearing arrangement formed by said engine, a first cam shaft drive for driving said first cam shaft on one side of said bearing arrangement from said engine output shaft, a first variable valve timing mechanism interconnecting said first cam shaft drive to said first cam shaft for varying the phase angle of said first cam shaft relative to said engine output shaft, a second cam shaft drive provided on the other side of said bearing arrangement from said first cam shaft drive and driving said second cam shaft from said first cam shaft, a second variable valve timing mechanism interposed between said second cam shaft drive and said second cam shaft for varying the phase relationship of said second cam shaft relative to said first cam shaft, and a member directly driven by said first cam shaft drive and associated with said second cam shaft on the other side of the bearing arrangement from said second cam shaft drive.