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. 18, 2009
Filed:
Nov. 08, 2007
Mark S. Graham, Midhurst, GB;
Mark S. Graham, Midhurst, GB;
Delphi Technologies, Inc., Troy, MI (US);
Abstract
A fuel injection system for an internal combustion engine, comprises: a pump comprising a pumping plunger which is driven, in use, to cause pressurization of fuel within a pump chamber, an accumulator volume for supplying fuel to a fuel injector, a fuel passage providing fluid communication between the pump chamber and the accumulator volume, and an inlet control valve operable to control fuel flow into the pump chamber from a low pressure reservoir; wherein the inlet control valve is a latching inlet valve. The fuel injection system may be a hybrid fuel injection system, having a rail valve located in the fuel passage between the pump chamber and the accumulator volume. The latching inlet valve may be a two-way electronic latching poppet valve, and the rail valve may be a non-return valve. A method of operating such a fuel injection system for an internal combustion engine is also described.