Fuel injection The fuel is injected at high pressure into either the combustion chamber, "swirl chamber" or "pre-chamber," unlike petrol engines where the fuel is often added in the inlet manifold or carburetor. Engines where the fuel is injected into the main combustion chamber are called direct injection (DI) engines, while those which use a swirl chamber or pre-chamber are called indirect injection (IDI) engines.
fuel injection the fuel is injected at high pressure into either the combustion chamber "swirl chamber" or "pre-chamber" unlike petrol engines where the fuel is often added in the inlet manifold or carburetor engines where the fuel is injected into the main combustion chamber are called direct injection (di) engines while those which use a swirl chamber or pre-chamber are called indirect injection (idi) engines