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. 10, 1995
Filed:
Dec. 06, 1994
Marshall R Porter, St. Louis, MO (US);
Carter Automotive Company, Inc., Southfield, MI (US);
Abstract
An engine fuel supply system includes a fuel pumping unit located outside the fuel tank for pumping fuel from the tank to the engine. The pumping unit includes a motor operated fuel pump positioned in a reservoir that is partitioned to form a lower chamber and an upper chamber. The pump inlet is connected to the lower chamber for pumping fuel into a pressure line leading to the engine. Excess fuel not used by the engine cylinder injectors is returned to the upper chamber for eventual flow into the lower chamber and recycling through the pump. The upper chamber provides the pump with an emergency supply of fuel that can be called upon when the fuel tank is in an empty condition. The upper chamber also acts as a cooling device for cooling heated excess fuel returned from the engine to the pumping unit.