A fuel injection system mixes fuel and air and injects the mixture into the cylinders of an internal combustion engine. Multi-point fuel injection systems use more than one injector.
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Multi-point fuel injection systems involve the use of numerous individual injectors for each cylinder. Multi-point fuel injection systems inject the fuel mixture into the intake port located upstream of the cylinder's intake valve, as opposed to single-point fuel injection, which injects fuel at a central point in the intake manifold.
Sequential multi-point fuel injection systems use timed injections to coincide with the intake stroke of each cylinder. Batched sequential multi-point fuel injection systems inject fuel into groups without synchronising injections. Simultaneous fuel injections injects the fuel mixture to all the cylinders at the same time.
Benefits of multi-point fuel injection systems include lower gas consumption, due to the fact that the multi-point system delivers a more precise amount of gas to each cylinder, reducing wasted gas. This reduction of gas also results in less harmful emissions.
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