Valve system for internal combustion engine

Details Valve system for internal combustion engine Valve system for internal combustion engine

1992-09-09

1994-10-25

Cross, E. Rollins

Internal-combustion engines

Poppet valve operating mechanism

With means for varying timing

123 9017, 123 9031, F01L 134

Patent

active

053579151

ABSTRACT:
A valve system for an internal combustion engine capable of changing the valve timing and valve lift of the intake and exhaust valves driven by rocker arms and overhead camshafts. A cam support member is pivotally mounted to the engine head and is positioned by a gear segment mounted to the camshaft support member in combination with a drive including a worm gear and a servomotor located on an engine block. The camshafts are driven by the crankshaft coupled with an idler gear. The idler gear is coupled with the camshaft gears through reduction gears, reducing the overall size of the drive and allowing flexibility as to valve timing.

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patent: 5074260 (1991-12-01), Yagi et al.
patent: 5107802 (1992-04-01), Yagi et al.

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