Throttle valve controlling apparatus
Patent
·
OSTI ID:5475703
An apparatus is described for controlling an open degree of a throttle valve fixed to a throttle valve shaft for swing movement around an axis of the throttle valve shaft so as to control an air-fuel mixture flow to be supplied to an engine. The apparatus consists of: a motor including a rotor portion which is associated with the throttle valve shaft to swing the throttle valve; means for detecting an amount of swing movement of the throttle valve and for producing a signal corresponding to the opening degree of the throttle valve; a control unit for receiving and judging the signal from the detecting means and for outputting a command to the motor so as to swing the throttle valve in a desired opening degree; a one piece throttle valve shaft on which the throttle valve and the rotor portion of the motor are separately disposed; and wherein the rotor portion and the one piece shaft are molded together.
- Assignee:
- Hitachi, Ltd., Tokyo
- Patent Number(s):
- US 4601271
- OSTI ID:
- 5475703
- Country of Publication:
- United States
- Language:
- English
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