Split type internal combustion engine

Internal-combustion engines – Accessories – Covers – trays – vibrators – corrosion inhibitors – air filters

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123481, 123580, F02D 1700

Patent

active

043655971

ABSTRACT:
An internal combustion engine is disclosed which includes first and second cylinder units, an intake manifold divided into first and second intake passages leading to the first and second cylinder units, respectively, an exhaust manifold divided into first and second exhaust passages leading from the first and second cylinder units, respectively, and control means for providing a control signal to disable the second cylinder unit when the engine load is below a predetermined value. The second intake passage has therein a first normally open valve adapted to close in response to the control signal. The second exhaust passage has therein a second normally open valve adapted to close in response to the control signal. Pressure control means is provided which is responsive to the control signal for supplying a predetermined pressure not less than atmospheric pressure to the second intake passage, thereby maintaining the second intake passage at the predetermined pressure.

REFERENCES:
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patent: 3578116 (1971-05-01), Nakajima et al.
patent: 4107921 (1978-08-01), Iizuka
patent: 4201180 (1980-05-01), Lizuka
patent: 4292938 (1981-10-01), Tanaka et al.
patent: 4296719 (1981-10-01), Takahashi et al.
patent: 4303053 (1981-12-01), Etoh et al.
patent: 4304208 (1981-12-01), Etoh et al.
patent: 4320726 (1982-03-01), Etoh et al.
ATZ 81 (1979) 6, pp. 255-260.
"Entwicklungslinien in Kraftfahrzeugtechnik und Strassenverkehr," Forschungsbilanz 1978, Untersuchungen zur Verbrauchssenkung am Ottomotor durch besondere Prozess-fuhrung, by Hockel et al.

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