Vito's Fuel Valve Dual Petcock Fits Yamaha Banshee Raptor 660 Gas Tank Feed High Flow - Vito's Performance, MCV350

• Fuel injectors attain this by making use of a spring loaded needle valve. To provide the correct amount of fuel at the right moment and in a suitable condition for combustion process. Basic parts – Nozzle and Nozzle holder or body. The high pressure fuel enters and travels inside the passage in the body and then into the nozzle surrounding the needle valve The nozzle and injector body are manufactured as a matching pair and are accurately ground to give a good oil seal. The needle valve will open when the fuel pressure acting on the needle valve tapered face exerts a sufficient force to overcome spring compression. The fuel then flows inside lower chamber and is forced out through series of tiny holes. The number, diameter and angular position of the nozzle orifices are determined by the output of the engine. The fuel is atomized and injected into combustion chamber. Once the injector pump cuts off the high pressure fuel supply the needle valve will close quickly under the spring compression force. The degree of atomization and penetration is dependent on the viscosity of the fuel. If the viscosity is very high atomization is reduced and penetration is increased. If the viscosity is very low atomization increases and penetration decreases. When engine is stopped the fuel booster pump supplies fuel which circulates inside the injector body.