Internal Combustion Engines
As a result of detonation in an I.C. engine, following parameter attains very high value

Peak temperature
Peak pressure
Rate of rise of temperature
Rate of rise of pressure

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Internal Combustion Engines
The fuel valve in a four stroke cycle diesel engine

Opens at 15° after top dead center and closes at 20° before bottom dead center
May open and close anywhere
Opens at 15° before top dead center and closes at 20° after top dead center
Opens at top dead center and closes at bottom dead center

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