Answer / sunil kumar

flywheel size of diesel engine is always high as compared to
the same rating petrol engine because the compression ratio
in diesel engine is high and the same self starter has to do
more work...so, to reduce the effect of this, a bigger
flywheel ring is provided to compensate the torque and
workdone...

Answer / gopi

Flywheel size of diesel engine should more than the petrol
engine because petrol engine gives smooth combustion where
as ci engine is ruff combustion and also high power so it
requires big size.

Answer / dinesh

because of variance in compression ratio

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