Intake system of an internal combustion engine of a counter-flow

Details Intake system of an internal combustion engine of a counter-flow Intake system of an internal combustion engine of a counter-flow

1979-03-28

1981-03-03

Phillips, Charles E.

Internal-combustion engines

Multiple cylinder

F02B 1500

Patent

active

042534321

ABSTRACT:
A multi-cylinder engine comprising an intake manifold equipped with a carburetor. A secondary throttle valve is provided for each cylinder. Each of the secondary throttle valves is arranged in the respective manifold branch and fixed onto a common throttle shaft. An auxiliary intake passage is branched off from the collecting portion of the intake manifold and connected to a distribution channel. Each of the intake ports is connected to the distribution channel via a corresponding channel branch which opens into the intake port at a position near the intake valve. The common throttle shaft of the secondary throttle valves is connected to a vacuum operated diaphragm apparatus so that the secondary throttle valves are opened in accordance with a reduction in the level of vacuum produced in the intake manifold.

REFERENCES:
patent: 3664316 (1972-05-01), Garcea
patent: 3685503 (1972-08-01), Jackson
patent: 3972324 (1976-08-01), Marsee
patent: 3977366 (1976-08-01), Yamaguchi et al.
patent: 4146593 (1979-03-01), Higashigawa

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