System for controlling air intake for an automotive engine

Details System for controlling air intake for an automotive engine System for controlling air intake for an automotive engine

1989-07-12

1990-05-08

Okonsky, David A.

Internal-combustion engines

Multiple cylinder

123 52MV, F02M 3510

Patent

active

049228641

ABSTRACT:
An improved system for controlling air intake for an engine of a vehicle. Each curved intake manifold includes high speed intake passages having a larger diameter and a shorter length and low speed intake passages having a smaller diameter and a longer distance. Valves are disposed between a chamber and the high speed intake passages on the both banks. To open or close the valves in dependency on the engine speed, an actuator including a negative pressure chamber is installed on the chamber. The actuator is controlled by a crank angle sensor detecting the engine speed.

REFERENCES:
patent: 4704996 (1987-11-01), Morikawa
patent: 4766853 (1988-08-01), Iwanami

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