The spark plug in the cylinder of an SI engine is fired at 20° bTDC when the engine is running at 2400 RPM. Flame propagation mode starts at 10° bTDC and last for XXXXXXXXXXseconds. Calculate: (a)...

The spark plug in the cylinder of an SI engine is fired at 20° bTDC when the engine is running at 2400 RPM. Flame propagation mode starts at 10° bTDC and last for 0.001667 seconds.

Calculate:

(a) Time of ignition and flame development in degrees of engine rotation. [°]

(b) Time of ignition and flame development in real time. [sec]

(c) Crank angle when flame propagation mode ends. [° aTDC]