2-15. A CI engine operating at 800 rpm uses 0.25 lb of fuel in 4 min...

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2-15. A CI engine operating at 800 rpm uses 0.25 lb of fuel in 4 min while develop- ing a torque of 56 lb-ft. What is the specific fuel consumption? 2-16. If the single-cylinder engine of Prob. 2-15 has a 5-in. bore and a 7-in. stroke, and operates on the four-stroke cycle, what is the bmep? 2-17. A four-stroke-cycle CI engine develops 12 bhp with a specific fuel consumption of 0.5 lb per bhp-hr. The displacement of the engine is 150 cu in. and the speed is 800 rpm. Does this engine utilize the fuel more efficiently than the engine of Probs. 2-15 and 2-16? If both engines had the same size, would equal torques be produced? 2-15. A CI engine operating at 800 rpm uses 0.25 lb of fuel in 4 min while develop- ing a torque of 56 lb-ft. What is the specific fuel consumption? 2-16. If the single-cylinder engine of Prob. 2-15 has a 5-in. bore and a 7-in. stroke, and operates on the four-stroke cycle, what is the bmep? 2-17. A four-stroke-cycle CI engine develops 12 bhp with a specific fuel consumption of 0.5 lb per bhp-hr. The displacement of the engine is 150 cu in. and the speed is 800 rpm. Does this engine utilize the fuel more efficiently than the engine of Probs. 2-15 and 2-16? If both engines had the same size, would equal torques be produced?

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Solutions 215 Specific Fuel Consumption Convert time to hours 4 minutes 460 hours 00667 hours Calcul... View the full answer