B) An engine with an indicated thermal efficiency of 50% and mechanical efficiency of 45% consumes 15kg/h of a fuel at a fixed speed. The brake mean effective pressure is 6.5 bar and the mean piston speed is 13m/s. Assuming it is a four cylinder four- stroke square engine, determine the crank radius and the speed in rpm. Take the heating value of the fuel =42MJ/kg and combustion efficiency 100%.
B) An engine with an indicated thermal efficiency of 50% and mechanical efficiency of 45% consumes 15kg/h of a fuel at a fixed speed. The brake mean effective pressure is 6.5 bar and the mean piston speed is 13m/s. Assuming it is a four cylinder four- stroke square engine, determine the crank radius and the speed in rpm. Take the heating value of the fuel =42MJ/kg and combustion efficiency 100%.
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B) An engine with an indicated thermal efficiency of 50% and mechanical efficiency of 45% consumes 15kg/h of a fuel at a fixed speed. The brake mean effective pressure is 6.5 bar and the mean piston speed is 13m/s. Assuming it is a four cylinder four- stroke square engine, determine the crank radius and the speed in rpm. Take the heating value of the fuel =42MJ/kg and combustion efficiency 100%.
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