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A test was conducted on a 4-stroke four cylinder engine having 6.9 cm diameter and 8.9...

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Mechanical Engineering

A test was conducted on a 4-stroke four cylinder engine having6.9 cm diameter and 8.9 cm stroke. The fuel supply to the engine is0.065 kg/min. The B.P measurements are given below with constantengine speed of 300 rpm: With all cylinder firing = 16.9 kW Cut offat 1st cylinder = 8.46 kW Cut off at 2nd cylinder = 8.56 kW Cut offat 3rd cylinder = 8.6 kW Cut off at 1st cylinder = 8.46 kW Ifclearance volume is 70 cm3 then find the mechanical efficiency,Indicate Power, Indicated thermal efficiency, Indicated meaneffective pressure and also comment about the engine type whetherit is SI or CI? Take Calorific value of fuel = 43500 kJ/kg

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