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(Solved): Q1) A four-cylinder, 4-stroke compression-ignition engine with a compression ratio of 18 has pistons ...



Q1) A four-cylinder, 4-stroke compression-ignition engine with a compression ratio of 18 has pistons with a bore of 9 cm and a stroke of 10 cm . At the beginning of compression, the air is at \( 1 \mathrm{bar}, 30^{\circ} \mathrm{C} \). The engine may be modeled by the ideal air-standard Diesel cycle. The maximum cycle temperature is 1700 K. If the engine produces 75 kW of net power, determine: a) The cutoff ratio, b) The heat supplied per cylinder, c) The thermal efficiency, d) The mean effective pressure, e) The rpm required.



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