HOW DIESEL ENGINES RECEIVE FUEL FOR COMBUSTION (Fuel Supply System In Diesel Engine)
The fuel supply system of diesel engines contains the subsequent segments:
2 fuel lift pump or fuel feed pump
3 fuel filter
4 fuel infusion pump
5 high-pressure pipe
6 overflow valve
7 fuel injector
Fuel is drawn from the fuel tank with the aid of the gas feed pump.
It is then pressured to infusion pump via the fuel filter.
The infusion pump supplies high-pressure fuel to infusion nozzles via delivery valves and high-pressure pipes.
Fuel is infused into the ignition chamber through infusion nozzles.
The fuel that leaks out from the infusion nozzle passes out via the leakage pipe and gets returned to the fuel tank through the overflow pipe.
The overflow valve hooked up at the highest point of the filter maintains the feed pressure below the indicated limit.
On the occasion that the feed pressure surpasses as far as possible, the overflow valve opens.
Afterward, the abundance of fuel gets returned to the fuel tank via an overflow pipe.
Fuel Tank
It is a storage tank for diesel.
A wire gauze sifter is located below the cap to prevent unusual debris from getting into the tank.
Fuel Lift Pump
it moves fuel from the gas tank to the inlet gallery of the fuel infusion pump.
Preliminary filter (sediment bowl assembly)
This channel is usually fitted at the fuel lift pump.
it keeps strange substances from getting into the fuel line.
it incorporates a glass cap with a gasket.
Fuel Filter
For the most part, two-stage filters are applied in diesel engines;
1 primary filter
2 secondary filter
The number one filter gets rid of coarse substances, water, and residue.
A secondary filter gets rid of fine residue debris.
Fuel Injection Pump
it is a high-pressure pump that supplies gas to the injectors as per the firing order of the engine.
it is applied to make pressure varying from a hundred and twenty kgcm2 to three hundred kgcm2.
it supplies the necessary quantity of gas to each chamber at the right time.
Air Venting Of Fuel System
At the point whilst air has entered the gas lines or suction chamber of the infusion pump, venting must be executed appropriately.
Air is taken out with the aid of using the primary pump via the draining openings of the infusion pump.
Fuel Injector
it is the component that conveys finely atomized gas below high pressure to the ignition chamber of the engine.
Present-day farm tractor engines use fuel injectors that have special openings.
Fundamental portions of injectors are the nozzle frame and needle valve.
The needle valve is squeezed against a conical seat within the nozzle frame with the aid of a spring.
The infusion pressure is modified by changing a screw in operation.
Fuel from the infusion pump enters the nozzle frame via a high-pressure pipe.
At the point whilst gas pressure seems to be high to such a volume that it surpasses the set spring pressure, the needle valve lifts off its seat.
The gas is compelled out of the nozzle spray openings into the combustion.
Main Forms Of Current Fuel Infusion Systems
1 common rail infusion system
2 individual pump infusion system
3 distributor system
Conclusion
This is a summary of the numerous processes that occur from the transfer of fuel from the fuel tank to combustion within the engine.
