Apparatus utilizing a plural-profiled cam unit for actuating the

Details Apparatus utilizing a plural-profiled cam unit for actuating the Apparatus utilizing a plural-profiled cam unit for actuating the

1984-03-30

1987-08-04

Feinberg, Craig R.

Internal-combustion engines

Poppet valve operating mechanism

Rod

123 9044, 74567, F01L 118

Patent

active

046838481

ABSTRACT:
A cam unit comprised of at least two side-by-side cams acts against a follower rocker arm that operates either an intake or exhaust valve of an internal combustion engine. One cam is formed with sloping take-up ramp portions connecting with a lobe portion. The side-by-side cam (or cams) has a base circle portion that increases in diameter to form sloping take-up ramp portions connecting with an eccentric portion slightly larger in radius than the base circle portion. The lobe portion on the one cam projects a radial distance considerably greater than the eccentric portion (or portions). Different working surfaces on the follower arm are thus engaged by the cams to reduce erosion.

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