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:
Oct. 25, 1988
Filed:
Dec. 31, 1987
Yutaka Takaku, Katsuta, JP;
Sigeo Tamaki, Katsuta, JP;
Hitachi, Ltd., Tokyo, JP;
Abstract
A fail-safe system against the sticking of the throttle valve is disclosed for an automotive engine at a type with a fuel supply unit and the throttle valve driven through an actuator. The amount of depression of the accelerator pedal is detected by an accelerator pedal sensor. The system further comprises a device for detecting that the throttle valve is stuck, and a device for controlling the fuel flow rate from the fuel supply unit in accordance with an output of the accelerator pedal sensor when the throttle valve is stuck. The system preferably further comprises an auxiliary air path bypassing the throttle valve. The bypass air mount from the auxiliary air path is controlled if the throttle valve is stuck at a low opening degree, while the fuel flow rate of the fuel supply unit is controlled if the throttle valve is stuck at a middle or high opening degree.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile