Patent ID: 9168992
Filing Date: 2015-10-27
Classification: B63H,F02B,F02M

Abstract:
1. A fuel supply system of an outboard motor, comprising: a low-pressure fuel filter; a low-pressure fuel pump; a vapor separator; a high-pressure fuel pump; and an injector provided on an outboard motor side and sequentially connected from a fuel tank side toward an intake port of an engine, in order to supply a fuel stored in a fuel tank provided on a hull side to the intake port, wherein: the vapor separator disposed on one side of left and right sides of the engine in relation to a traveling direction of a hull, and has an upper portion to which a vapor vent pipe having a tip open to atmosphere is connected; the high-pressure fuel pump is provided at a position lower than the vapor separator and is connected to the vapor separator via fuel pipes; the high-pressure fuel pump has an upper portion to which one end of an air vent pipe is connected; the air vent pipe passes a position higher than the fuel pipes, and has another end communicated with the atmosphere via the vapor vent pipe of the vapor separator; and the vapor vent pipe includes a folded portion formed so as to extend from the one side of the left and right sides of the engine toward another side of the left and right sides of the engine and thereafter turn back towards the one side of the engine.