Patent ID: 6428375
Filing Date: 2002-08-06
Classification: B63H,F01P,F02B,F02M,Y02T

Abstract:
A fuel cooling apparatus for an outboard motor, the outboard motor being provided with a water-cooled engine having a crank shaft arranged substantially in a vertical direction, a vapor separator, a fuel injector positioned to supply a fuel from the vapor separator into the engine, a high pressure fuel pump positioned in the vapor separator so as to feed the fuel under pressure to the fuel injector, and a pressure regulator positioned in the vapor separator so as to reduce a pressure of a return fuel, the fuel cooling apparatus comprising a fuel cooler having a fuel passage and a cooling water passage arranged side by side in parallel to each other, the fuel passage interposed in a high pressure return fuel hose branched off from a high pressure fuel hose connecting the high pressure fuel pump and the fuel injector and connected to an upstream side of the pressure regulator, the cooling water passage being positioned to circulate cooling water for cooling the engine so as to cool the fuel in the fuel passage.