In SI engines, maximum flame speed is obtained when the equivalence ratio is between
All of the following factors promote detonation in SI engines, except
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With increase in speed, the crank angle required for flame propagation
With increase in compression ratio, flame speed
The delay period in a petrol engine is of the order of
Detonation is said to take place in the engine when
Which aspect does not help to reduce the detonating tendency in a spark ignition engine?
The commercially available petrol in India has an octane rating of
9 Which of the following combustion chamber has inlet and exhaust valve placed on the opposite side of the cylinder?
The overhead valve engine is superior to a side valve or an L-head engine at high compression ratios. Which of the following characteristics of this type of valve arrangement is not favourable?
29 docs|220 tests
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29 docs|220 tests
|