What does fuel injection do?

Answer 1

In a conventional internal combustion engine there are two typical methods for delivering fuel to the combustion process:

1. carburation

2. fuel injection. Current fuel injection systems are computer controlled, taking into consideration engine temperature, air pressure, air volume, vehicle speed, throttle position, engine RPM and anything else that might be considered even slightly significant. Carburated systems only considered engine vacuum and throttle position, with an indirect method for determining when the engine was first being started. Fuel injection actually monitors what's going on in the engine, delivering the proper amount of fuel to provide maximum power for the minimum amount of fuel. Fuel injection is far more efficient and produces far fewer unwanted emissions.