Valve operating device for internal combustion engine

Details Valve operating device for internal combustion engine Valve operating device for internal combustion engine

1988-05-16

1989-08-08

Wolfe, Willis R.

Internal-combustion engines

Poppet valve operating mechanism

With means for varying timing

123 906, F01L 104, F01L 126

Patent

active

048542725

ABSTRACT:
A valve operating device for an internal combustion engine, including a plurality of cams or a camshaft having different cam profiles corresponding to operating conditions of the engine for opening and closing the intake valves according to the operating conditions of the engine. The high-speed cam has a cam lobe which projects from a base-circle portion of the cam by a distance smaller than the distance by which the cam lobe of a low-speed cam projects from the base-circle portion. The cam lobe of the high-speed cam also subtends a larger angle on the base circle of the camshaft than the cam lobe of the low-speed cam.

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