The fuel system is responsible for delivering fuel from the tank to the engine. It includes the fuel tank, pump, filter, and injectors or carburetor. Each component must work properly for good performance. The concept of direct fuel injection was invented in 1925 by Swedish engineer Jonas Hesselman. The main components of the fuel system are the fuel tank, fuel pump, fuel line, fuel filter, fuel pressure regulator, and injector or carburetor. The fuel pump draws fuel from the tank and pumps it to the engine.

1. FUEL SYSTEM

2.  The fuel system is made up of the fuel tank, pump, filter,
and injectors or carburetor, and is responsible for delivering
fuel to the engine as needed. Each component must
perform flawlessly to achieve expected vehicle performance
and reliability.

3.  Jonas Hesselman (1877 – 1957)
The concept of direct fuel injection has been around since 1925
when Swedish engineer Jonas Hesselman invented it. During WWII, some
fighter planes were equipped with direct fuel injection to prevent stalling
during high speed aerial maneuvers.

5.  The main components of the fuel system include:
a) fuel tank
b) fuel pump
c) fuel line
d) fuel filter
e) fuel pressure regulator
f) injector/carburetor

6.  Fuel Tank: It acts as the reservoir for the vehicle's fuel. The
tank has an electronic "trigger" that conveys information
concerning the amount of fuel to the gas gauge.

7.  Fuel Pump: Its primary function is to draw fuel from the fuel
tank and pump it into the internal combustion engine. There
are two kinds of fuel pumps: mechanical and electric, which
are used in vehicles with carburetors and electronic fuel
injectors, respectively.

8.  Fuel Line. is a hose used to bring fuel from one point in a
vehicle to another or from a storage tank to a vehicle. It is
commonly made of reinforced rubber to prevent splitting
and kinking.

9.  Fuel Pressure Regulator. is an engine management
component that is found in one form or another on virtually
all internal combustion engines. It is a component of the
vehicle's fuel system, and as it's name implies, is
responsible for regulating the pressure of the fuel flowing
through the system.

10.  Fuel Filter. It is fixed in both the ends of the fuel pumps to
separate impurities from the fuel, thereby ensuring optimal
engine performance.

11.  Fuel Injector: It is an electronic valve that opens/closes at
regular intervals to deliver the right amount of fuel to the
engine.

12.  Carburetor: Its main purpose is to mix the right amount of
air and fuel and deliver it to the engine. The carburetor is
the predecessor of the fuel injector.

13.  PROPERTIES OF FUEL Fuel is a substance consumed by
the engine to produce energy. The common fuels for
internal combustion engines are:
1. Petrol
2. Power kerosene
3. High speed diesel oil
4. Light diesel oil.

14.  QUALITY OF FUEL The quality of the fuel mainly depends
upon the following properties:
1. Volatility of the fuel
2. Calorific value of the fuel
3. Ignition quality of the fuel

15. Fuel System of Spark Engine