Fuel System

Question 1

What is the function of the Fuel System?

Answer 1

Store fuel and deliver it to the combustion chamber

Question 2

Whare are the main stages of the fuel system operation?

Answer 2

• Fuel tank stores fuel
• Fuel pump draws fuel from the tank and pushes it through the fuel lines to engine
• Fuel filter removes contaminants from fuel
• Fuel injectors precisely deliver the fuel into the combustion chamber
• ECU regulates air-fuel ratio for optimal combustion

Question 3

What are the differences between Indirect and Direct Injection?

Answer 3

Indirect Injection:
- Mostly used in petrol engines
- Fuel is injected into the intake manifold before entering combustion chamber

Direct Injection:
- Common in Diesel and Petrol engines
- Fuel is directly into the combustion chamber

Question 4

How do fuel injectors operate in diesel and petrol engines?

Answer 4

Diesel:
- Requires higher pressure to reduce diesel into a mist before injecting it into the combustion chamber

Petrol:
- Focuses more on fuel distribution and mixture for smoother combustion