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:
Jan. 16, 1979
Filed:
Oct. 03, 1977
Roland G Kibler, Flushing, MI (US);
Bruce C Hartfelder, Davison, MI (US);
General Motors Corporation, Detroit, MI (US);
Abstract
A system for limiting the speed of a gasoline engine includes a circuit responsive to the engine speed which provides control signals to a solenoid valve which in turn controls a vacuum actuator. The vacuum actuator then overrides a manual throttle control to move the throttle toward closed position when a governed engine speed is approached. A control circuit provides a signal having four components; one proportional to engine speed, second and third proportional to engine acceleration and a fourth which is the integrated difference between the engine speed and a preset governed speed. In addition a speed switch actuated when an overspeed condition occurs is effective to inhibit the third component and to increase the fourth component to its maximum value to effect maximum governing action and system stability. The control signal controls a duty cycle oscillator which actuates the solenoid valve.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile