Suction apparatus for engine

Details Suction apparatus for engine Suction apparatus for engine

1991-04-30

1992-04-28

Okonsky, David A.

Internal-combustion engines

Multiple cylinder

F02M 3510

Patent

active

051078007

ABSTRACT:
This invention relates to an engine suction apparatus in which a tuning frequency of pressure-vibration characteristics of a suction path on the upstream side of a throttle body coincides with a frequency of a pressure vibration applied from a suction port to the suction path at an idling engine speed. The suction apparatus includes an idling path, branching from the suction path on the upstream side of the throttle body, for supplying intake air in an idling state, and a resonance silencer which resonates at the tuning frequency to reduce noise is connected to the idling path.

REFERENCES:
patent: 4858570 (1989-08-01), Matsumoto et al.
patent: 5040495 (1991-08-01), Harada et al.

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