Petrol vehicles uses device called carburetor for supplying the air fuel mixture in correct ratio to cylinders in all rpm ranges. However in response to recent demands forcleaner exhaust emission, more economical fuel consumption, improved drivability, etc., carburettor should now be equipped with various devices that make it more complex system. Therefore, the MPFI (multi point fuel injection) system is used.
In the Multipoint Injection System, we have one injector per cylinder; the injector injects the fuel into the admission valve which admits the fuel and air into the cylinder. This gives an individual control on this cylinder, improving the fuel consumption in relation of the Single point injection.
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