A . During a trial of four-stroke Diesel engine, the following observations were recorded: Area of..

A. During a trial of four-stroke Diesel engine, the following observations were recorded: Area of indicator diagram = 475 mm2 Length of the indicator diagram = 62 mm Spring constant = 1.1 bar/mm Bore = lOO mm Stroke = 150 mm Speed = 375 rpm Determine (a) indicated mean effective pressure, and (b) indicated power. B. A four-stroke, gasolene engine develops a brake power of 410 kW. The engine consumes 120 kg of fuel in one hour and air consumption is 40 kg/min. The mechanical efficiency is 87% and the fuel heating value is 43000 kJ/kg. Determine the following: (a) Air fuel ratio (b)
A. During a trial of four-stroke Diesel engine, the following observations were recorded: Area of indicator diagram = 475 mm2 Length of the indicator diagram = 62 mm Spring constant = 1.1 bar/mm Bore = lOO mm Stroke = 150 mm Speed = 375 rpm Determine (a) indicated mean effective pressure, and (b) indicated power. B. A four-stroke, gasolene engine develops a brake power of 410 kW. The engine consumes 120 kg of fuel in one hour and air consumption is 40 kg/min. The mechanical efficiency is 87% and the fuel heating value is 43000 kJ/kg. Determine the following: (a) Air fuel ratio (b) Indicated and brake thermal efficiencies  

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