The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Nov. 25, 2003
Filed:
Sep. 09, 2002
Yoichi Yanagii, Kawasaki, JP;
Keihin Corporation, Tokyo, JP;
Abstract
To provides a throttle valve control apparatus which can stably detect an angle of a throttle valve shaft for a long time with no hysteresis in detecting an angle of the throttle valve shaft, and can make a motor for driving the throttle valve shaft compact, an intake passage is controlled to be opened and closed by a throttle valve mounted to a throttle valve shaft a spring force in a direction for closing of the throttle valve is energized to the throttle valve shaft by a throttle return spring the throttle valve shaft is operated to be opened and closed by a motor M driven according to a signal output from an ECU, a rotation angle of the throttle valve shaft is detected by an opening degree sensor T arranged to face to the throttle valve shaft this angle signal is output toward the ECU, and a sensor rotor TA constituting the opening degree sensor is pressed and energized to an end portion of the throttle valve shaft in a rotation direction of the throttle valve by a rotor return spring which energizes the sensor rotor in a direction for opening of the throttle valve