Patent ID: 6966302
Filing Date: 2005-11-22
Classification: F02M,Y10T

Abstract:
1. A fuel system with a fuel tank having an interior adapted to retain a supply of fuel for an internal combustion engine, comprising: a primary fuel pump having an inlet in communication with the interior of the fuel tank and through which fuel is supplied to the primary fuel pump, and an output of pressurized fuel for delivery to an engine; a secondary fuel pump driven by some of the output of pressurized fuel of the primary fuel pump; a valve having an inlet communicating with the output of pressurized fuel of the primary pump, an outlet for communicating pressurized fuel from the inlet with the secondary fuel pump and movable to open and closed positions, a chamber in the valve in which fuel may be received, the inlet and outlet of the valve do not communicate with the chamber, at least one orifice in fluid communication with the chamber and the interior of the fuel tank, and a valve member received at least in part in the chamber for movement between a position opening the valve to permit flow of pressurized fuel to the secondary fuel pump and to a position closing the valve to at least substantially restrict fuel flow to the secondary pump, and movement of the valve member toward the position opening the valve causes fuel in the chamber to be displaced out of the chamber through said at least one orifice to retard opening of the valve.