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.