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:
Jul. 14, 1998
Filed:
Feb. 28, 1997
Mitsuru Takada, Aichi-ken, JP;
Toyota Jidosha Kabushiki Kaisha, Toyota, JP;
Abstract
An on-vehicle control apparatus having a throttle valve in an intake passage of the engine is disclosed. The system for actuating the throttle valve includes electric and mechanical components. A electrical motor incorporated in the electric component actuates the throttle valve. An electronic control unit (ECU) controls the motor such that the opening of the throttle valve matches a target opening, which corresponds to a manipulation amount of a gas pedal. When there is an abnormality in the motor, if the gas pedal is manipulated by a predetermined amount or more, the mechanical component couples the gas pedal with the throttle valve, thereby actuating the throttle valve. When there is an abnormality in the motor, the ECU cuts fuel supply to some of the injectors. This allows the actual torque of the engine to be slightly lower than a computed engine torque that corresponds to the amount of a gas pedal manipulation.