What is Detonation in Engine?

Detonation is the spontaneous combustion of the end-gas (remaining fuel/air mixture) in the chamber. It always occurs after normal combustion is initiated by the spark plug. The initial combustion at the spark plug is followed by a normal combustion burn. For some reason, likely heat and pressure, the end gas in the chamber spontaneously combusts. The key point here is that detonation occurs after you have initiated the normal combustion with...

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Difference between CI and SI engine .

1. In SI engines, a properly mixed air-fuel mixture is provided by an electrical spark. Whereas in CI engines high temperature caused by compressing the air is sufficient for ignition.Hence they are called CI engines. 2.The SI engine works on Otto cycle. WhereasThe CI engine works on Diesel cycle. 3. the fuel used in SI engine is Petrol that burns if left in air at a little bit temperature. It is very volatile. The fuel used in CI engine...

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Milling Machine (PPT)

•Used to produce one or more machined surfaces accurately on workpiece –One or more rotary milling cutters •Workpiece held on work table or holding device and brought into contact with cutter •Vertical milling machine most common •Horizontal milling machine handles operations normally performed by other tools. ppt on milling machine ...

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