Assist air control system for internal combustion engine

Details Assist air control system for internal combustion engine Assist air control system for internal combustion engine

1994-02-03

1995-10-24

Kamen, Noah P.

Internal-combustion engines

Charge forming device

Auxiliary air or oxygen added to combustible mixture

123588, F02B 2300

Patent

active

054601487

ABSTRACT:
An assist air control system for an internal combustion engine introduces, via an assist air passage bypassing a throttle valve, a portion of intake air flowing in an intake pipe upstream of the throttle valve to an area where fuel is injected from a fuel injection valve, so as to facilitate atomization of the injected fuel. The assist air passage includes a flow control unit for opening and closing the assist air passage. The degree of opening of the assist air passage is limited to a value that is reduced as an engine temperature increases, while increased as an engine load increases. The opening degree of the flow control unit may be controlled electrically, mechanically, or both. In this case, the electrically controlled opening degree value is set smaller than the mechanically controlled opening degree value.

REFERENCES:
patent: 4387696 (1983-06-01), Yogo et al.
patent: 4475486 (1984-10-01), Kessler
patent: 4517941 (1985-05-01), Nakagawa

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