The compression ratio in petrol engine is kept less than in Diesel engine becaus

Question

The compression ratio in petrol engine is kept less than in Diesel engine because

Options:

A . It makes petrol engines lighter

B . Higher or equivalent compression ratio in petrol engines is not possible due to pre-ignition

C . Less compression ratio gives better performance

D . It is just customary to have less compression ratio in petrol engines

Answer: Option B

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