Indirect Fuel Injection System. There are two designs for an idi system. This technology is used for achieving higher engine speeds for diesel engines.
An indirect injection diesel engine delivers fuel into a chamber off the combustion chamber called a pre chamber or ante chamber where combustion begins and then spreads into the main combustion chamber assisted by turbulence created in the chamber. There are two designs for an idi system. It is typically used in light duty diesel engines fitted in the earlier generation passenger cars sedans multi utility vehicles.
A pre combustion chamber and air cell.
There is either a separate injector for each cylinder or one or two injectors into the inlet manifold. Fuel is rapidly forced into the combustion chamber which mixes with air in the cylinder effectively powering the truck. A fuel pump sends the petrol to the engine bay and it is then injected into the inlet manifold by an injector. A fuel injection system petrol engined cars use indirect fuel injection.
