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:
Aug. 28, 2012
Filed:
Jul. 30, 2009
Bradley Allen Brown, Leonard, MI (US);
Larry Castleberry, Detroit, MI (US);
Brien Lloyd Fulton, West Bloomfield, MI (US);
Scott James Szymusiak, Canton, MI (US);
Bradley Allen Brown, Leonard, MI (US);
Larry Castleberry, Detroit, MI (US);
Brien Lloyd Fulton, West Bloomfield, MI (US);
Scott James Szymusiak, Canton, MI (US);
Ford Global Technologies, LLC, Dearborn, MI (US);
Abstract
A fuel system for a diesel engine has both a low pressure pump, which extracts fuel from the fuel tank, and a high pressure pump, which is fed by the low pressure pump and supplies fuel to fuel injectors. The fuel injectors supply fuel to the engine cylinders, with a small portion of fuel routed back into the fuel system. According to an embodiment of the present disclosure, the injector return fuel is routed into a low pressure fuel line between the low and high pressure fuel pumps, with return fuel from the fuel rails returned through a fuel cooler to the fuel tank. The low pressure fuel line has a filter disposed therein and the injector return fuel is returned to the low pressure fuel line upstream of the filter.