Fuel supply system in Compression ignition (CI) engine
Generally, the CI
engine is used in heavy vehicles. Bus, trucks, special type vehicles, etc., and
in CI engines most commonly used fuel is Diesel. CI engine is part of I C.
Engine (Internal combustion engine).
Generally, the fuel supply system of diesel engines is the same as petrol engines only. The only difference is fuel and air did not mix like petrol engines. It means the carburetor is not used.
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| Fuel supply system in Diesel engine |
List of components used in the fuel supply system.
1) Fuel Tank
2) Fuel pump
3) Fuel
Filter
4) Air
Filter
5) Fuel Injector
6) Engine
chamber (Cylinder chamber).
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| Fuel supply system in Diesel engine |
Here is the
pump fuel supply system which is used in modern vehicles. In this pump fuel
supply system.
The fuel
tank stores the fuel and the Fuel pump sucks the fuel from the fuel tank and supply to
the end of the engine. In between fuel passes through a fuel filter which purifies the
fuel and then it transfers to the fuel injector
Fuel injectors
directly spray the fuel in the cylinder chamber at the end of the compression stroke
without mixing with filter fresh air. Fresh Air comes into the cylinder chamber
through the inlet valve. Fresh air comes to the inlet valve by an air filter, which
cleans the air before being supplied to the engine.
Remember In diesel engines only diesel is used as fuel. Diesel fire point is high compared to petrol. In all heavy vehicles or high-load capacities, diesel is used as fuel.
You can be more clear about the working of the fuel system by the below block- diagram of the fuel supply system image. You can easily understand this block-diagram fuel supply system in a Diesel engine.
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| Fuel supply system in Diesel engine |
Functions of fuel supply system components.
1) Fuel
tank:- The function of the fuel tank is to store the fuel.
2) Fuel
pump:- The function of the fuel pump is to suck the fuel from the fuel tank and transfer it to the engine.
3) Fuel
filter:- The function of the fuel filter is to purify or clean the fuel that comes
from the fuel tank.
4) Air
filter:- The function of an air filter is to clean/ purify the air before transfer
into a carburetor.
5) Engine: -
The function of the engine is to work as per the ratio of air and fuel mix into the
cylinder chamber.
Application of diesel of engine?Buses, trucks, industrial
- Straight chain paraffin.
- Aromatics.
- Branched-chain- paraffin.
- Naphthalene.
SI engine and CI engine difference and its working in automobiles.