Intake system for engine

Details Intake system for engine Intake system for engine

1992-06-08

1993-12-28

Cross, E. Rollins

Internal-combustion engines

Engine speed regulator

Having plural throttle valve structure

123308, F02D 908

Patent

active

052730140

ABSTRACT:
An intake system for a multiple-cylinder engine a plurality of primary discrete intake passages and a plurality of secondary discrete intake passages. Each pair of primary discrete intake passage and the secondary discrete intake passage communicate with one of the cylinders. Both the primary and secondary discrete intake passages are straight and the primary discrete intake passage is provided with a primary valve member which is provided with an opening and is selectively positioned in a closed position where the primary valve member limits the effective cross-sectional area of the primary discrete intake passage to the cross-sectional area of the opening and in an open position where the primary valve member wide opens the primary intake passage. The secondary discrete intake passage is provided with a secondary valve member which is moved between a closed position where it substantially closes the secondary discrete intake passage and an open position where it wide opens the secondary discrete intake passage.

REFERENCES:
patent: 4317438 (1982-03-01), Yagi et al.
patent: 4494504 (1985-01-01), Yagi et al.
patent: 4702207 (1987-10-01), Hatamura et al.
patent: 4892076 (1990-01-01), Toshimits et al.
patent: 5167211 (1992-01-01), Fukuma et al.

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