why petrol engines have more power than diesel engines of
same capacity?
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Answer Posted / kiran
in petrol engines otto cycle is being used. for 2 cylinders
of same capacity (i.e same compression ratio) work done by
otto cycle is more than diesel cycle as the area bounded by
the otto cycle is more than diesel for same compression
ratio. but due to high pressure after compression in otto
cycles, its compression ratio is kept usually less so that
the maximum pressure is limited .
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