a large $6$ cylinder SI engine with a total displacement of $1\mathrm{.}86$ lt run at $2200$ rpm$.$ the spark plug is higher at $19\backslash$deg BTDC with a consequences ignition delay $0\mathrm{.}0015$ s$.$ the total time between the occurrence of spark and end of combustion is $0\mathrm{.}00323$ s$.$ compression ratio is $9\mathrm{.}8$ and length is $7\mathrm{.}2$ cm connecting length $13\mathrm{.}3$ cm$.$ the spark plug is located at the center of CC$.$ find; D and average film speed, mean pistons speed or VC$,$ crank angle at the start and end of combustion $($ degree BTDC$),$ position of pistons from from TDC at the end of combustion, volume in combustion chamber at the end of combustion