Internal-combustion engines – Multiple cylinder
Patent
1985-11-06
1987-07-14
Feinberg, Craig R.
Internal-combustion engines
Multiple cylinder
F02M 3100
Patent
active
046795316
ABSTRACT:
An intake system for an internal combustion engine has an intake passage comprising a common passage portion opening to the atmosphere, a surge tank connected to the downstream end of the common passage portion and a plurality of discrete passage portions branching from the surge tank and respectively connected to the cylinders. At least one interconnecting passage is provided to communicate each of the discrete passage portions with at least one of the other discrete passage portions at a portion downstream of the surge tank, and an on-off valve is disposed at each junction of the interconnecting passage with the discrete passage portions to open and close each junction. The on-off valve is opened at least when the engine speed exceeds a predetermined speed during heavy load operation of the engine.
REFERENCES:
patent: 2862490 (1958-12-01), Trisler
patent: 3814069 (1974-06-01), Croft et al.
patent: 4304211 (1981-12-01), Tezuka et al.
patent: 4445480 (1984-05-01), Inoue et al.
patent: 4565166 (1986-01-01), Tekeda
Hinatase Fumio
Hitomi Mitsuo
Yuzuriha Yasuhiro
Feinberg Craig R.
Ferguson Jr. Gerald J.
Hoffman Michael P.
Malamud Ronni S.
Mazda Motor Corporation
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