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:
Sep. 17, 1991
Filed:
May. 29, 1990
Aisin Seiki Kabushiki Kaisha, Kariya, JP;
Abstract
A throttle control method for an internal combustion engine wherein a motor is connected through a clutch mechanism to a throttle valve which is constantly biased toward a closed position by a return spring. The motor is controlled in accordance with an output signal from a throttle sensor which detects the degree of opening of the throttle valve. This arrangement controls the amount of intake air into the internal combustion engine. The clutch mechanism is engaged and disengaged in accordance with a running condition of the vehicle and an operating condition of the internal combustion engine. An operating condition of the motor, the throttle sensor, the clutch mechanism and the return spring, is detected by activating the motor and the clutch mechanism, and when an abnormality is detected in at least one of the devices, both the motor and the clutch mechanism are deactivated.