Diesel Fuel Pump Module with Fuel Wax By-Pass

摘要

A by-pass fuel system configured so that in the event diesel fuel has waxed and/or ice crystals have formed such that the fuel cannot pass easily through the fuel pump fuel strainer, the diesel fuel is selectively able to pass through an auxiliary fuel port via a by-pass valve, thereby ensuring adequate fuel flow to the diesel engine. Return fuel heated by the engine is preferably directed directly onto the fuel pump fuel strainer to help dissolve the waxing and crystallization. An auxiliary coarse fuel strainer optionally provides coarse fuel straining of the by-passed fuel.