Abstract: A fuel supply device of an engine is provided, which has high versatility irrespective of specifications of the engine, and thus easily achieves economies of mass production, and has high cost-effectiveness even in the engine of small-lot production. The fuel supply device of the engine comprises a high pressure fuel pump that raises pressure of fuel and discharges the fuel, a plurality of fuel injectors, and a fuel supply piping that distributes the fuel discharged from the high pressure fuel pump to the fuel injectors. The fuel supply piping includes a plurality of sockets that are connected to the fuel injectors respectively, a junction pipe that connects adjacent sockets among the plurality of sockets, and a stay that integrally connects the plurality of sockets and fixes the plurality of sockets to a main body of the engine.

Abstract: A fuel supply device of an engine is provided, which has high versatility irrespective of specifications of the engine, and thus easily achieves economies of mass production, and has high cost-effectiveness even in the engine of small-lot production. The fuel supply device of the engine comprises a high pressure fuel pump that raises pressure of fuel and discharges the fuel, a plurality of fuel injectors, and a fuel supply piping that distributes the fuel discharged from the high pressure fuel pump to the fuel injectors. The fuel supply piping includes a plurality of sockets that are connected to the fuel injectors respectively, a junction pipe that connects adjacent sockets among the plurality of sockets, and a stay that integrally connects the plurality of sockets and fixes the plurality of sockets to a main body of the engine.

Abstract: A fuel supply system of an outboard motor for supplying a fuel stored in a fuel tank to an intake port of an engine includes: a vapor separator which is disposed on one of left and right sides of the engine in terms of a traveling direction of a hull and to whose upper portion a vapor vent pipe having a tip open to an atmosphere is connected; and an in-line high-pressure fuel pump which is connected to the vapor separator via a fuel pipe and to whose upper portion an air vent pipe passing a position higher than the fuel pipe is connected, wherein the vapor vent pipe includes a folded portion formed so as to extend toward the other side out of the left and right sides of the engine and thereafter return to the one side.

Abstract: A fuel supply system of an outboard motor includes: a vapor separator which separates a fuel sent from a fuel tank by a low-pressure fuel pump into gas and liquid to release fuel vapor to an atmosphere; a fuel cooler which is disposed under the vapor separator to cool the fuel by cooling water passing through a cooling water pipe; a drain pipe connected to a side surface of the fuel cooler which faces downward while the outboard motor is tilted up; and an in-line high-pressure fuel pump connected in a middle of a fuel pipe connected to a side surface of the fuel cooler different from the side surface to which the drain pipe is connected. It is possible to easily and surely draw off the fuel in the fuel pipe while the outboard motor is tilted up.