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Fuel Injectors

Fuel injection is a system for introducing fuel into internal combustion engines, and into automotive engines, in particular. On diesel engines, fuel injection is a necessity, whilst on petrol engines fuel injection is an alternative to the carburetor.

Below left is a cutaway of a pumpe duse injector. Below right is a diagram of the injector in the cylinder head - the fuel rail is built into the cylinder head. Big changes vs. past injectors are in the valve spring like top which is actuated by the camshaft, the side feed fuel injectors, and the solenoid injection action.

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