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:
May. 23, 1989
Filed:
Feb. 17, 1988
Brian D Mabee, Warren, MI (US);
Keith V Leigh-Monstevens, Troy, MI (US);
Other;
Abstract
A throttle control system for a vehicle of the type including a throttle body and a throttle valve mounted within the throttle body and controlling the delivery of fuel and/or air to the engine of the vehicle. The invention control sytsem includes a rotary potentiometer providing an output signal representing the instantaneous position of the accelerator pedal of the vehicle; another rotary potentiometer providing an output signal representing the instantaneous angular position of the throttle valve; a comparator receiving the throttle pedal and throttle valve position signals and generating an error signal representing the difference between the two signals; a differential signal representing the rate of change in the error signal; a summer receiving the output signal from the throttle valve potentiometer, the error signal from the comparator, and the differential signal from the differential and generating a summed output signal; and a proportional rotary solenoid which receives the summed output signal from the summer and positions the pivot shaft of the throttle valve in proportion to the received signal.