Flow control device of a helically-shaped intake port for use in

Details Flow control device of a helically-shaped intake port for use in Flow control device of a helically-shaped intake port for use in

1982-08-04

1984-07-31

Feinberg, Craig R.

Internal-combustion engines

Valve

Valve head cooperates with manifold

123308, F01L 306

Patent

active

044623496

ABSTRACT:
A helically-shaped intake port comprising a helical portion formed around an intake valve, and a substantially straight inlet passage portion tangentially connected to the helical portion. A bypass passage is branched off from the inlet passage portion and connected to the helical portion. A rotary valve is arranged in the bypass passage and actuated by a vacuum operated diaphragm apparatus. The vacuum chamber of the diaphragm apparatus is selectively connected to the atmosphere or the suction pump driven by the diesel engine for opening the rotary valve when the level of load of the diesel engine is increased beyond a predetermined level.

REFERENCES:
patent: 3850479 (1974-11-01), Boyhont et al.
patent: 4174686 (1979-11-01), Shimizu et al.
patent: 4196701 (1980-04-01), Tamura et al.
patent: 4201165 (1980-05-01), Tanaka et al.
patent: 4253432 (1981-03-01), Nohira et al.
patent: 4256062 (1981-03-01), Schafer
patent: 4257384 (1981-03-01), Matsumoto
patent: 4312306 (1982-01-01), Nakanishi et al.
patent: 4411226 (1983-10-01), Okumura et al.

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