What is the function of fuel injection system in I C engine?

What is the function of fuel injection system in I C engine?

Options:

a. to inject fuel into the combustion chamber
b. to make mixture of air and fuel ---
c. to provide heat or spark for ignition of fuel
d. none of the above

Correct Answer: b. to make mixture of air and fuel

Explanation:

Fuel injection system is the advanced alternative for carburetor. This fuel injection system mixes air and fuel to make it combustible but at an advanced level unlike the carburetors. As it is a computerized process, it can produce more efficient air-fuel mixture to improve engine efficiency.

Engine control unit (ECU) is used in the fuel injection system to control the fuel supply. As soon as we press accelerator pedal, the throttle valve which allows air intake in the system opens more and allows more air to come inside the system. The engine control unit (ECU) senses the air inlet with the help of its sensors and other electronic devices and increases the fuel rate according to the air intake rate. It is very important to increase the fuel rate as soon as the acceleration pedal is pressed, because there may be chances of reaching the fuel without sufficient amount of fuel mixed in it. Thus all the process is operated electronically for higher accuracy.