Valve operating device for multicylinder internal combustion eng

Details Valve operating device for multicylinder internal combustion eng Valve operating device for multicylinder internal combustion eng

1987-12-24

1989-07-18

Wolfe, Willis R.

Internal-combustion engines

Poppet valve operating mechanism

With means for varying timing

123198F, 123321, 123347, F01L 134

Patent

active

048482846

ABSTRACT:
A valve operating device for the intake or exhaust valves of a multicylinder internal combustion engine. Each cylinder has a valve operating mechanism associated therewith for opening and closing intake or exhaust valves associated with that cylinder in at least two different manners for different engine speeds. The cylinders are divided into two or more groups with each of said valve operating mechanisms being arranged to operate the intake or exhaust valves associated with the cylinders in one of the groups in a different operation mode from the intake or exhaust valves associated with the cylinders in another of the groups, at least under a certain operating condition of the engine, such as at low speed. The various embodiments disclosed different arrangements for the valve operating mechanisms for improving engine operation over various ranges of engine speed.

REFERENCES:
patent: 4473047 (1984-09-01), Jakuba et al.
patent: 4545342 (1985-10-01), Nakano et al.
patent: 4656977 (1987-04-01), Nagahiro et al.
patent: 4700684 (1987-10-01), Pischinger et al.
patent: 4727830 (1988-03-01), Nagahiro et al.
patent: 4727831 (1988-03-01), Nagahiro et al.
patent: 4741297 (1988-05-01), Nagahiro et al.
patent: 4741307 (1988-05-01), Meneely

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