Air intake device of an internal combustion engine

Details Air intake device of an internal combustion engine Air intake device of an internal combustion engine

1984-09-13

1986-03-11

Feinberg, Craig R.

Internal-combustion engines

Multiple cylinder

123188M, F02B 2700, F02M 700

Patent

active

045747482

ABSTRACT:
An air intake device comprising a main air intake passage and an auxiliary air intake passage, in which the main air intake passage interconnects the air cleaner to the engine cylinders and the auxiliary air intake passage is connected to the air cleaner at one end thereof and to the main air intake passage at the other end thereof. The equivalent pipe lengths of the main air intake passage and the auxiliary air intake passage are almost the same. An air pulsation control valve actuated in response to the engine load and the engine speed is arranged in the other end of the auxiliary air intake passage. The engine has a helically-shaped intake port comprising a helical portion, an inlet passage portion, and a bypass passage branched off from the inlet passage portion and connected to the helix terminating portion of the helical portion. A flow path control valve actuated in response to the engine load is arranged in the bypass passage. The opening and closing operation of the air pulsation control valve is carried out when the flow path control valve is open.

REFERENCES:
patent: 3814069 (1974-06-01), Croft et al.
patent: 4231329 (1980-11-01), Ishida
patent: 4457272 (1984-07-01), Koga
patent: 4462349 (1984-07-01), Motosugi et al.
patent: 4480606 (1984-11-01), Kato et al.
patent: 4485775 (1984-12-01), Kanda et al.

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