Automotive type throttle body

Details Automotive type throttle body Automotive type throttle body

1988-03-02

1989-01-10

Nelli, Raymond A.

Internal-combustion engines

Engine speed regulator

Having plural throttle valve structure

123479, 123399, 123400, 123442, F02M 712

Patent

active

047965797

ABSTRACT:
An automotive type internal combustion engine has an air throttle body for providing air to the engine for combination with fuel injected to define a fuel air charge; the air throttle body having primary and secondary air passages controlled by throttling valves, the primary passage being a drive-by-wire electrical system in which the throttle valve is moved electrically in response to movement of the vehicle accelerator pedal, the secondary passage being controlled by a throttle valve that has a direct mechanical connection to the vehicle accelerator pedal to be operative at wide open or near wide open throttle positions of the accelerator pedal to not only supply additional air for wide open throttle operation, but also to supply sufficient air to sustain engine operation in the event of inoperativeness of the electrical system or the actuator/motor affecting movement of the primary throttle valve.

REFERENCES:
patent: 3502167 (1970-03-01), Baxter et al.
patent: 3561409 (1971-02-01), August
patent: 4335689 (1982-06-01), Abe et al.
patent: 4424785 (1984-01-01), Ishida et al.
patent: 4452218 (1984-06-01), Yokoyama et al.
patent: 4484551 (1984-11-01), Choma et al.

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