Analyze a 2001 Chevrolet Duramax 6.6 L turbo diesel engine using the air-standard Diesel cycle that addresses the "real" effects of non-isentropic compression/expansion, air-fuel ratio, fuel heating value, incomplete combustion, exhaust residual, and heat loss. The engine is a four-stroke, eight- cylinder, (V8) diesel with a compression ratio of 17.5, and develops maximum power at 2700 rpm. Assume the following: the diesel fuel heating value is QHV 42,600 kJ/kg, the air-to-fuel ratio (AF) at maximum power is 21, and the combustion efficiency is 95%. Assume there is a 4% exhaust gas residual from the previous cycle and 25% of the heat input during combustion is lost to the coolant, oil, and ambient air. The mechanical efficiency, which accounts for parasitic losses and friction, is 85%. At the beginning of the compression stroke in non-turbocharged mode, assume the conditions in the cylinder are 98 kPa and 305K. Using the variable specific heat method with 85% compression efficiency and 80% expansion efficiency during compression and expansion strokes, determine the following. a. net heat input (k) per cylinder per cycle b. net work (kJ) per cylinder per cycle c. mean effective pressure (kPa) d. thermal efficiency(%) e, overall efficiency(%) f. maximum total power (kW and hp at 2700 rpm) g. maximum brake power (kW and hp at 2700 rpm) h. brake specific fuel consumption (Ibm/Hp-hr) i, volumetric efficiency (%) using STP air density (288.7x, 101.3 kPa)

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