Patent ID: 6170470
Filing Date: 2001-01-09
Classification: F02D,F02M,Y02T

Abstract:
A fuel supply system for an internal combustion engine, comprising:a fuel pump;a fuel reservoir, said fuel reservoir being a housing in which water separates from fuel and is collected at a bottom portion of said fuel reservoir;a first conduit connected in fluid communication with said fuel reservoir at a first location which is a first distance above said bottom portion of said fuel reservoir, said first conduit being connected in fluid communication with said fuel pump for pumping fuel from said fuel reservoir toward a combustion chamber of said engine;a second conduit connected in fluid communication with said fuel reservoir at a second location which is a second distance above said bottom portion of said fuel reservoir, said first distance being greater than said second distance, said second conduit being connected in fluid communication with said fuel pump for pumping fuel from said bottom portion of said fuel reservoir toward said combustion chamber of said engine;a valve connected to said second conduit for opening and closing a fuel path from said fuel reservoir through said second conduit toward said combustion chamber of said engine;an engine speed measuring device; anda microprocessor connected in signal communication with said engine speed measuring device and with said valve to open said fuel path through said second conduit in response to a speed of said internal combustion engine which exceeds a first predetermined threshold magnitude and to close said fuel path through said second conduit in response to a speed of said internal combustion engine which exceeds a second predetermined threshold magnitude, whereby water collected at said bottom portion of said fuel reservoir will flow from said fuel reservoir through said second conduit.