Question: A four-cylinder, two-stroke cycle petrol engine develops (40 mathrm{~kW}) at (1500 mathrm{rpm}). The mean effective pressure in each cylinder is 7.5 bar. The mechanical efficiency

A four-cylinder, two-stroke cycle petrol engine develops $40 \mathrm{~kW}$ at $1500 \mathrm{rpm}$. The mean effective pressure in each cylinder is 7.5 bar. The mechanical efficiency is $85 \%$ Determine the cylinder bore and piston stroke, if stroke to bore ratio is 1.5. Also determine the fuel consumption if brake thermal efficiency is $30 \%$. Take calorific value of petrol as $44 \mathrm{MJ} / \mathrm{kg}$.

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