Internal-combustion engines – Poppet valve operating mechanism – Tappet
Patent
1995-02-10
1996-08-20
Lo, Weilun
Internal-combustion engines
Poppet valve operating mechanism
Tappet
123 9065, F01L 114
Patent
active
055468993
ABSTRACT:
Valve train load transfer apparatus for underhead cam pushrod engines employing hydraulic roller lifters. Auxiliary coil springs are installed between the rigid bodies of the roller lifters and the cylinder head of the engine. A binocular shaped load transfer retainer is provided for each associated pair (intake and exhaust) of valve lifters to prevent roller lifter rotation and retain associated auxiliary coil springs in engagement with the top of the lifter body. A preferably elongate bar is mounted against an underside of the cylinder head and is provided with plural flanged openings to receive the coil springs. The biasing force of the auxiliary coil springs between the receiving member and the lifter bodies holds the receiving member in position against the cylinder head.
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Sperling Kenneth R.
Tripp Guy L.
Air Flow Research Heads, Inc.
Lo Weilun
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