The air flow to a four cylinder four stroke engine is 2 15 m min...

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The air flow to a four cylinder four stroke engine is 2 15 m min During a test on the engine the following data were recorded Bore 10 5cm stroke 12 5cm engine speed 1200 rpm torque 150 N m fuel consumption 5 5 kg h calorific value of fuel 43124 kJ kg ambient temperature and pressure are 20 C and 1 03 bars Calculate The brake thermal efficiency The brakes mean effective pressure The volumetric efficiency

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