Question: A 6 cylinder four stroke cycle petrol engine develops (300 mathrm{~kW}) bp at 2500 r.p.m. The stroke to bore ratio is 1.25. Assuming the mechanical

A 6 cylinder four stroke cycle petrol engine develops $300 \mathrm{~kW}$ bp at 2500 r.p.m. The stroke to bore ratio is 1.25. Assuming the mechanical efficiency of $80 \%$ and mean effective pressure of $9 \mathrm{bar}$, determine the bore and stroke of engine.

Also find the fuel consumption in $\mathrm{kg} / \mathrm{hr}$ if indicated thermal efficiency is $30 \%$ and C.V. of fuel used is $41900 \mathrm{~kJ} / \mathrm{kg}$.

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