Advantages of electronic fuel injection

Replacing carburettors with electronic fuel injection (EFI) for delivery of fuel on engines has numerous advantages. However, for each engine installation, achieving these benefits requires a comprehensive integration and calibration. The spark-ignition engine with an electronic fuel injection system compared with a carburettor unit have the following favourable points

Advantages of electronic fuel injection system :

  • Improvement in volumetric efficiency due to relatively less resistance in intake manifolds, resulting in less pressure loss.
  • Manifold wetting is eliminated by injecting fuel near the cylinder.
  • Automation of fuel is independent of cranking speed so the starting will be easier.
  • Better atomization and vaporization will reduce the knock on the engine.
  • It eliminates ice formation on the throttle plate.
  • Position of the injection unit is not so critical so the height of the engine can be less.
  • Distribution of fuel being independent of vaporization.
  • Less volatile fuel can be used.
  • Variation of air-fuel ratio is almost negligible.
  • This system produces around 5% to 10% more power than a carburettor engine.
  • This system will not only improves reliability but also reduces the amount of routine maintenance that is required.
  • Excellent starting.
  • Complete altitude compensation in full load or low load conditions even in cold weather condition there is one cold start injector too.