Internal-combustion engines – Combustion chamber means combined with air-fuel mixture... – Air or combustible mixture entering the combustion chamber...
Patent
1985-02-15
1986-03-18
Argenbright, Tony M.
Internal-combustion engines
Combustion chamber means combined with air-fuel mixture...
Air or combustible mixture entering the combustion chamber...
123442, F02M 3510, F02D 908
Patent
active
045761310
ABSTRACT:
Several embodiments of induction systems for internal combustion engines embodying pairs of intake passages each serving a single cylinder of the engine. In accordance with each embodiment of the invention, a device is provided for restricting the communication of the intake passages with the cylinder during idle operation so as to improve idle by precluding the backflow of exhaust gases into the intake passages. In some embodiments, the restricting means consists of throttle valves positioned in one or both of the intake passages and which are moved to a closed position when the engine is operating at idle. In accordance with embodiments of the invention, the cams associated with the intake valves provide for opening of one intake valve prior to opening of the other intake valve.
REFERENCES:
patent: 3211137 (1965-10-01), Love
patent: 3418981 (1968-12-01), Von Seggern et al.
patent: 4271801 (1981-06-01), Yamakawa et al.
patent: 4300504 (1981-11-01), Tezuka
patent: 4512311 (1985-04-01), Sugiyama
Argenbright Tony M.
Beutler Ernest A.
Wolfe W. R.
Yamaha Hatsudoki Kabushiki Kaisha
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