A marine fuel injector is essentially a fuel injection system that works inside of a boat or other marine vehicle. It operates by atomizing the gasoline through a nozzle at both very high speeds and high pressures, spraying the resulting fuel “mist” into the cylinders within your engine.
How is the fuel injector operation?
Fuel injectors are located in the intake manifold and spray fuel through a tiny nozzle. The fuel injector uses a special nozzle to spray the fuel as mist, instead of a strong jet stream. When the throttle valve opens, your fuel injector sprays fuel to mix with the air and then enters the engine’s combustion cylinders.
How do you adjust the timing of fuel injector?
There are several ways you can adjust injection timing, depending on the type of engine you have and how old it is. The most common ways to adjust injection timing are programming the ECM, adjusting the fuel injection pump, replacing the camshaft, and replacing the cam followers or gaskets.
How does 2 stroke fuel injection work?
Fuel is squirted into the cylinder via two injectors in the transfer ports, rather than into the inlet port or head. The oil tank inlet is behind the steering-head, from where the lube runs through the frame to a reservoir and pump below the seat. Maintenance is just as simple as a carby two-stroke.
How do fuel injectors work in marine diesel engine?
Fuel Injectors for Marine Diesel Engine A typical fuel injector is shown in Figure, It can be seen to be two basic parts, the nozzle and the nozzle holder or body. The high-pressure fuel enters and travels down a passage in the body and then into a passage in the nozzle, ending finally in a chamber surrounding the needle valve.
Why is there a recirculation line in the fuel injector?
For slow speed marine engines there is a special recirculation line provided in the injector to avoid clogging / chocking of valves due to heavy fuel oil. During engine stop the booster pump is used specially to maintain oil flow in fuel injector. In some design there is also allowance for water passage in fuel injection for cooling purposes.
What are the main parts of a fuel injector?
The two main basic parts are its nozzle and nozzle holder or body. The high-pressure fuel enters and travels down a passage in the body and then into a passage in the nozzle, ending finally in a chamber surrounding the needle valve. The needle valve is held closed on a mitred seat by an intermediate spindle and a spring in the injector body.
How does a fuel injector nozzle work?
The nozzle and injector body are manufactured as a matching pair and are accurately ground to give a good oil seal. The two are joined by a nozzle nut. The needle valve will open when the fuel pressure acting on the needle valve tapered face exerts a sufficient force to overcome the spring compression.
