Engine air intake system having a bypass current control valve

Details Engine air intake system having a bypass current control valve Engine air intake system having a bypass current control valve

1995-05-04

1996-07-09

McMahon, Marguerite

Internal-combustion engines

Means to whirl fluid before, upon, or after entry into...

Having multiple oxidant inlet means

F02B 1500

Patent

active

055334830

ABSTRACT:
An engine air intake system comprises a main air duct and at least one bypass air duct, which are located side by side. The bypass air duct is smaller in cross-sectional area than the main air duct which is provided with a throttle contiguous to the bypass air duct having therein a control valve. The throttle and the control valve are regulated by a link mechanism such that the throttle is closed when the engine is operating at a low or intermediate load rate, and that the control valve is opened partially when the throttle remains closed, thereby resulting in an acceleration of air current flowing through the bypass air duct and an improvement in the tumble or swirl ratio. As the engine is operating at a progressively increasing load rate, the throttle is caused to open gradually to bring about an increase in the engine air intake volume so as to enable the engine to operate under the optimum condition.

REFERENCES:
patent: 4186706 (1980-02-01), Matsumoto
patent: 4347816 (1982-09-01), Saito et al.
patent: 4445473 (1984-05-01), Matsumoto
patent: 4445480 (1984-05-01), Inoue et al.
patent: 4481922 (1984-11-01), Sugiura
patent: 5255648 (1993-10-01), Hokazono et al.
patent: 5325828 (1994-07-01), Yamaguchi et al.

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