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

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

Question Posted / rohitmathanker87

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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

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3 Yes

5 No

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