Intake manifold for an internal combustion engine

Internal-combustion engines – Intake manifold – Multiple passage leading to inlet of one cylinder

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Details

1231884, F01L 1502, F02M 3510

Patent

active

055423850

ABSTRACT:
Disclosed is an intake manifold system for an internal combustion engine, which includes a surge tank for temporarily storing the air, an intake manifold for connecting the surge tank with combustion chambers of cylinders, the intake manifold having a plurality of high speed tubes for taking in the air from the surge tank and a plurality of medium/low speed tubes for taking in the air from the surge tank, the internal diameter of the high speed tubes being greater than that of the medium/low speed tubes, each of the cylinders being connected with a pair of the high speed tube and the medium/low speed tube, an intake manifold valve for selectively opening and closing the inlet openings of the high speed and medium/low speed tubes of the intake manifold, a valve guide attached to the inside surface of the surge tank for slidably guiding the intake manifold valve, and a drive means for driving the manifold valve device according to an engine running speed, whereby the air flows via the high speed tubes into the combustion chambers at a high engine running speed more rapidly than at a medium/low engine running speed.

REFERENCES:
patent: 1719816 (1929-07-01), Wang
patent: 4612903 (1986-09-01), Urabe et al.
patent: 4726343 (1988-02-01), Kruger
patent: 4765286 (1988-08-01), Lyjak et al.
patent: 4911111 (1990-03-01), Matsunaga
patent: 5261359 (1993-11-01), Hull

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