Question

A naturally aspirated six cylinder, 6.128-L (374-in^3) diesel engine consumes 21.9 kg/h (48 lb/h) of fuel and 440 kg/h (970 lb/h) of air while running at 2400 r/min (rpm) and producing 93.8 kW (126 hp) of brake power. Assume the barometric pressure is 100 kPa (14.5 psi) and the ambient air temperature is 300 degrees K (540 degrees R). A. Calculate the theoretical air consumption of the engine. B. Calculate the volumetric efficiency. C. Calculate the air to fuel ratio. Now assume thhe engine is fitted with a tubrocharger that provides 100 kPa (14.5 psi) of boost with a compressor efficiency of 70%. D. Estimate the volumetric efficiency. E. Estimate the air consumption of the turbocharged engine. F. Assuming the air to duel ratio is kept constant by increasing the fuel delivery to the turbocharged engine and there is no change in the BSFC, what would be the brake power of the turbocharged engine?

Answer 1