Ford Global Technolgoies, LLC

Ford Motor Company Limited

Brian Michael Blanton

Robert Eugene Wattleworth

James Witherspoon Mitchell, Jr

Alvin Arthur Powell

Kyle Lance Petrich

Glen Paul Langenderfer

In one embodiment of the present invention, a 'returnless' fuel delivery system for a motor vehicle includes a fuel pressure regulator located in the fuel tank and a fuel pressure damper located at the fuel rail on the vehicle's engine. The fuel return line from the fuel rail to the fuel tank, a conventional feature in fuel delivery systems, is eliminated. Fuel delivery systems according to the present invention can provide very precise fuel delivery at a highly competitive system cost.

Returnless fuel delivery system

In one embodiment of the present invention, a 'returnless' fuel system for a motor vehicle is disclosed. A 'series-pass' fuel pressure regulator in the system provides fuel of a regulated pressure to a fuel rail comprising at least one fuel injector. A 'bypass' fuel pressure regulator provides fuel with a regulated pressure to the series pass regulator. An in-line fuel filter is located downstream from the bypass regulator, such that only the fuel which reaches the series-pass regulator is filtered. A check valve is located downstream from the bypass regulator as well, to prevent fuel pressure bleed-down through the fuel pump and the bypass regulator. A pressure relief valve is coupled to allow fuel with a pressure above a predetermined value to flow around the check valve.

Growing community of inventors

Dearborn, MI, United States of America

Brian Michael Blanton