Fuel trap evacuation system

Claim 1

In combination: an internal combustion engine for burning a mixture of liquid fuel and air to produce useful power and heated exhaust gases, said engine having inlet means for receiving a fuel-air mixture and an outlet for discharging the heated exhaust gases; a carburetor for mixing liquid fuel and air; supply conduit means connected between said carburetor and said engine inlet; a turbocharger having: a turbine connected to said engine outlet so as to be driven by the heated exhaust gases from said engine, and a compressor connected in said supply conduit means to receive a mixture of liquid fuel and air from said carburetor, compress such mixture, and deliver the compressed mixture to said engine inlet means; said compressor and said engine inlet means being oriented such that liquid fuel being supplied by said compressor travels upwardly to reach said engine inlet such that portions of said liquid fuel tend to collect in a sump-defining portion of said supply conduit means between said compressor and said engine inlet means; and pumping means having: an inlet communicating with said sump-defining portion, a pump for pumping fuel from said sump-defining portion, and an outlet communicating with said supply conduit means for directing said pumped fuel into a downstream portion of said supply conduit means at a location where the remaining extent of said supply conduit means is oriented to exclude subsequent upward travel of fuel to said engine inlet.