We will be familiar with the words MPFI and CRDI in the advertisement of some vehicles. But how many of us know what MPFI exactly is? The term MPFI is generally used to specify an engine variant used in the petrol vehicles. A small computerized system is used to control the engine of the car. A petrol car will have more than three fuel burning chambers or simply cylinders. The MPFI engine is abbreviated as the Multi point fuel injection engine. The MPFI engine got this name because of the reason that each cylinder is having a fuel injector installed near them. That is why they are called as the Multi point fuel injection engine.
Principle behind MPFI
The power is produced in a petrol engine is by burning the fuel. In petrol engine, the petrol is ignited. At first, the petrol is allowed to mix with air. It is then ignited in a cylinder called as the combustion chamber. This combustion of the petrol produces a sufficient energy to run the engine. The Carburetor is being used in the earlier days before the invention of MPFI engine. It is the duty of the carburetor to mix the fuel and air in a fixed air-fuel ratio. The fuel thus mixed in the carburetor is then given to the combustion chamber where this mixture gets ignited. The power thus obtained from the ignition of gas is used to drive the engine. The main disadvantage of the Carburetor is that the mixing of fuel and air is not in the proper ratio which leads to the wastage of fuel and the pollution is high. Since the emission rate is high in carburetor engine, the MPFI engine is being introduced.