B$.$ A $1\mathrm{.}6-$liter four$-$cylinder engine with a compression ratio of $9\mathrm{.}2$:$1$ operates on an air$-$standard Oto cycle. Maximum cycle temperature and pressure are $2700$ K and $11800$ kPa when operating at $2200$ RPM$.$ The exhaust valve effectively opens at $48bBDC.$ Calculate:

Time of exhaust blowdown

Percent of exhaust gas that exits the cylinder during blowdown

Exit velocity at the start of blowdown, assuming choked flow occurs.