Question

1n) Why is an engine operating on the Diesel cycle typically thermally more efficient than an engine operating on the Otto cycle?

Answer 1

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A diesel engine is more efficient than betrol Engine I due to following reasons As we know that diesel is dewer fuel ie it One lite weights more than of petrol's one love So Energy clensity is higher in diesel fuel. It has almost 10% more energy than a lite of petrol - (b) Retation per minute of diesel engine is low. So less Prfetional losses. (c) Exhaust tempeature of Diesel engine is lower Thou of exhaust of petrol engine. So in diesel more heat is converted into work thou of petrol Engine . (d) Diesel Engines can also works on lean mixtures ranging from 17 to 8oil where so part of Ain and a part of fuel . But on other hand petrol engine runs b/w o 10:1 to 1711 it show very limited sange of proportion of Afr-fuel ratio. In petrol engine thottle plate is used to regulate mas of ass that's why throttling losses occur. But in case of diesel engine. There is no CS pinoftled whalve do no. loss occur. CamScanner