Single-point fuel injection system: It uses only a single injector for fuel injection., The fuel is injected before the intake manifold., It is arranged before the throttling body., It is also known as throttle body injection., The air-fuel ratio is not uniform for all the cylinders., Multi-point fuel injection system: It uses a separate fuel injector for each cylinder., The fuel is injected into the intake manifold before the intake value., It is provided after the throttling body., It is also known as a port fuel injection system., The air-fuel ratio is more uniform than single-point fuel injection.,

Differences between single point and multi-point fuel injection systems

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