Internal-combustion engines – Poppet valve operating mechanism – Rocker
Patent
1989-03-03
1990-02-06
Wolfe, Willis R.
Internal-combustion engines
Poppet valve operating mechanism
Rocker
123 906, F01L 108, F01L 118
Patent
active
048981311
ABSTRACT:
A valve actuating mechanism for an internal combustion engine in which a rotatable cam has its camming surface disposed to slide on a cam slipper surface of a rocker arm to thereby open and close an intake valve (or exhaust valve) of the engine by rocking motion of the rocker arm. The dimensions, shapes, and relative positions of the rotatable cam and the rocker arm are so designed as to satisfy a condition of V.sub.C +V.sub.F >0, where V.sub.C represents the velocity of movement of a contact point on the camming surface at which the camming surface slides on the cam slipper surface, and V.sub.F the velocity of movement of the contact point on the cam slipper surface at which the cam slipper surface slides on the camming surface.
REFERENCES:
patent: 4365785 (1982-12-01), Miller
patent: 4672927 (1987-06-01), Uchida
patent: 4793297 (1988-12-01), Fujii et al.
Hamamoto Toshikazu
Izawa Shinichiro
Sanada Makoto
Yamashita Hiroshi
Honda Giken Kogyo K.K.
Lessler Arthur L.
Lo Weilun
Wolfe Willis R.
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