Answer / sornakumar

in petrol engine compression ratio is low so it makes more
detonation.if we use this in heavy purpose it lead to low
efficiency and damage the component.in detonation
compression ratio decrese it ill increase.

Answer / anjaney k. kulkarni

compression ratio<10 due to knocking factor. if C.R
increases,detonation increases. for heavy purpose heavy
power is required and with C.R<10,size of engine will
increase which is not economical as compared to diesel
engine. its power to wt ratio will be less.

Answer / bhaskar

generally petrol engines has constant volume cycle heat
addition so that the engine is not designed to deliver
torque from flywheel but more speed.

Answer / pankaj singh

bcs compression ratio of the petrol engine is low and it
produce more detonation. suppose we are using petron engin
in haevy perpose it decrease the effecency & damge the
engine part & increases the chance of detonation that's why
we can't use petrol engin in heavy perpose.

Answer / krishna

due to the high operating cost.power generated by disel
engine is high and also load carrying capacity is high in
disel engine.

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