Requirements of fuel injection system

1) Metering – The fuel injection system must measure the fuel supplied to the engine very accurately as fuel requirements vary from low to high engine speeds.

2) Time- Fuel injection system must supply the fuel at the proper time according to engine requirement

3) Pressure- The fuel injection system must pressurize the fuel to open the injection nozzle to inject fuel into the combustion chamber.

4) Atomize- The fuel must be atomized when it is supplied to the combustion chamber since atomized fuel will burn easily.

5) Distribution- In case of multi cylinder engine the distribution of metered fuel should be same to all cylinders.

6) Control, start and stop injection- The injection fuel must start and end quickly.