Vale operating apparatus for an internal combustion engine

Details Vale operating apparatus for an internal combustion engine Vale operating apparatus for an internal combustion engine

1990-08-27

1994-03-01

Nelli, Raymond A.

Internal-combustion engines

Poppet valve operating mechanism

Rocker

123 9016, 123 9017, F01L 134, F01L 126

Patent

active

RE0345539

ABSTRACT:
Valve operating apparatus is disclosed in which the valves are operated by rocker arms driven by cams having different cam profiles and hydraulically operated coupling mechanisms for selectively connecting or disconnecting adjacent rocker arms to vary the operation of the valves under different engine operating conditions. The coupling mechanisms are operated by fluid supplied through the rocker shaft mounting the rocker arms. The rocker shaft is divided into independent fluid supply passages whereby the couplings can be supplied independently with operating fluid in order to expand the number of available valve operating control modes. Variations are described in which operating fluid can be independently supplied to various ancillary hydraulically-operated equipment, as well as to the selective coupling mechanisms.

REFERENCES:
patent: 4523550 (1985-06-01), Matsuura
patent: 4537164 (1985-08-01), Ajiki et al.
patent: 4537165 (1985-08-01), Honda et al.
patent: 4545342 (1985-10-01), Nakano et al.
patent: 4556026 (1985-12-01), Morita
patent: 4589387 (1986-05-01), Miura et al.
patent: 4612884 (1986-09-01), Ajiki et al.
patent: 4627391 (1986-12-01), Derringer
patent: 4656977 (1986-04-01), Nagahiro et al.
patent: 4690110 (1987-09-01), Nishimura et al.
patent: 4726332 (1988-02-01), Nishimura et al.

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