1.

Why rich fuel mixture is used in petrol engines?

Answer» HEY..THERE

It is because the stiochiometric ratiofor diesel engines is higher thangasoline engines. The fuel air MIXING takes in the combustion chamber itself and is not a HOMOGENEOUS mixture. The diesel fuel is SPRAYED through injector nozzles. Thus the air fuelratios are higher which makes themixture lean.
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