Patent ID: 6907857

Claim:
A fuel supply and injection system for a vehicle equipped with an engine supplied with fuel from a vehicle fuel tank, wherein the engine has an engine main body, which includes a plurality of cylinder bores and a plurality of pistons, and each piston is received in a corresponding one of the cylinder bores and defines a combustion chamber in the corresponding one of the cylinder bores, the fuel supply and injection system comprising: a single electric pump unit, which is provided in the fuel tank and includes an inlet for taking the fuel in the fuel tank and an outlet for discharging the fuel; a plurality of fuel injection valves, which are secured to the engine main body, wherein each fuel injection valve includes a nozzle, which is disposed in a corresponding one of the combustion chambers and injects the fuel supplied from the electric pump unit directly into the corresponding one of the combustion chambers; and a piping arrangement, which connects between the outlet of the electric pump unit and each fuel injection valve, wherein the single electric pump unit is the only pump for supplying the fuel to the fuel injection valves; wherein each nozzle includes a plurality of injection holes, which are oriented to uniformly inject the fuel over an entire top surface of a corresponding one of the pistons.