Intake system of an internal combustion engine

Details Intake system of an internal combustion engine Intake system of an internal combustion engine

1982-10-12

1984-11-06

Lazarus, Ira S.

Internal-combustion engines

Valve

Valve head cooperates with manifold

123440, 123478, 123489, F02M 700, F01L 300

Patent

active

044806060

ABSTRACT:
An internal combustion engine having a helically-shaped intake port. When the intake manifold vacuum is in the range of about -500 through -250 mmHg, a super lean mixture is fed into the cylinders of the engine. When the intake manifold vacuum is in the range of about -250 through -100 mmHg, a fuel mixture, having the stoichiometric air-fuel ratio, is fed into the cylinders of the engine. When the intake manifold vacuum is smaller than about -100 mmHg, a rich mixture is fed into the cylinders of the engine.

REFERENCES:
patent: 4099491 (1978-07-01), Reddy
patent: 4143623 (1979-03-01), Norimatsu et al.
patent: 4156413 (1979-05-01), Taplin
patent: 4168679 (1979-09-01), Ikeura et al.
patent: 4169440 (1979-10-01), Taplin et al.
patent: 4286554 (1981-09-01), Okamoto
patent: 4376369 (1983-03-01), Horikoshi et al.
patent: 4385608 (1983-05-01), Ohgomi et al.
patent: 4393842 (1983-07-01), Otsuka et al.
patent: 4399792 (1983-08-01), Otsuka et al.

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