Patent ID: 6250266
Filing Date: 2001-06-26
Classification: F01L,F02B

Abstract:
An internal combustion engine and camshaft timing drive comprising an output shaft driven by combustion occurring in at least one combustion chamber of said engine, a first camshaft for operating at least one valve associated with said combustion chamber, a second camshaft for operating at least a second valve associated with said combustion chamber, said first and said second camshafts having juxtaposed first ends, a first timing drive for driving said first camshaft from said output shaft at said first end of said first camshaft, a second timing drive for driving said first end of said second camshaft from said first end of said first camshaft, said first and second timing drives driving said camshafts at the same speed in timed relationship from said output shaft, a first variable valve timing arrangement arranged in said first timing drive for adjusting the timing of opening of said first and said second valves by said first and said second camshafts in the same degree and in the same direction, a second variable valve timing mechanism interposed in said second timing drive for adjusting the timing of opening and closing of said second valve relative to said first valve.