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. 30, 1997
Filed:
Jul. 12, 1995
John R Forgue, Cheshire, CT (US);
George H Bucci, South Windsor, CT (US);
Walbro Corporation, Cass City, MI (US);
Abstract
A fuel delivery system for an internal combustion engine that includes an electric-motor fuel pump and an electronic control circuit for applying electrical power to the pump motor from a source of d.c. potential. The electronic control circuit is responsive to voltage level at the source of d.c. potential for automatically boosting electrical power applied to the pump motor when voltage available at the source decreases to a preselected level. In the preferred embodiments, the pump motor is a d.c. motor, and the electronic control circuit takes the form of a d.c.-to-d.c. convertor having a transformer and a rectifier circuit coupling the transformer to the motor. Power switches apply alternating current to the transformer when voltage available at the d.c. power source is inadequate, thereby increasing or boosting power applied to the motor through the rectifier circuit.