Describe the construction and working of D-MPFI and L-MPFI with help of neat sketch.

Describe the construction and working of D-MPFI and L-MPFI with help of neat sketch.
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Answer :

D-LMFI System: It is Manifold fuel injection system.In this type, the vacuum in the intake manifold and volume of air by its density are sensed in this type of MPFI system .As air enters into intake manifold the manifold pressure is sensor detects the intake manifold vacuum and sends the information to the ECU.

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L-MPFI System: The L-MPFI System is a Port injection system. In this system fuel metering is regulated by the engine speed and amount of air that actually enters in the engine. This is called air-mass metering of air flow metering. As air enters into the intake manifold , the air flow sensor measures the amount of air and sends information to ECU.

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