the compression ratio of petrol engine is always less than
c.r. of deseal engine why?

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the compression ratio of petrol engine is always less than c.r. of deseal engine why?..

Answer / kingfisher

Petrol is not self igniting , it needs spark to flame up
in chamber. Where as diesel is self igniting in diesel
engine , to attain that state it requires high temp &
pressure .This temp & pressure is more than whats
required in Petrol Engines by property of that fluid .

Is This Answer Correct ?    13 Yes 1 No

the compression ratio of petrol engine is always less than c.r. of deseal engine why?..

Answer / rushi

In order to avoid Knocking in petrol engine , c.r. kept low.

Is This Answer Correct ?    0 Yes 0 No

the compression ratio of petrol engine is always less than c.r. of deseal engine why?..

Answer / karthick

because the self ignition temp of diesel is high.so the
comp ratio is high for diesel engines

Is This Answer Correct ?    3 Yes 5 No

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