Answer Happy

Specific fuel consumption rate table is given for an engine. Power and Torque curves for the engine is also given. Please answer the following questions: a) (10 pts) Find the SFC, power and torque when it runs at the engine rpm of minimum specific fuel consumption rate. b) (10 pts) Find the torque and specific fuel consumption rate when it runs at the engine rpm of 80kW power. c) (10 pts) Find the power and specific fuel consumption rate when it runs at the engine rpm of 280Nm torque. d) (10 pts) Calculate the fuel tank volume needed if the vehicle has the range for 2 hours of driving at 280 Nm torque and 5 hours of driving at 5000 rpm. The fuel density is 820 kg/m².
SFC curves and tabulated values for Engines Engine rpm SFC [kg/kW-hr] 1500 0.560 2000 0.520 0.475 2500 3000 3500 4000 0.440 0.420 0.385 0.370 0.360 0.355 4500 5000 5500 0.350 6000 6500 0.358 7000 0.368 7500 0.376
Power and Torque Curves 480 240 440 220 Torque (Nm) 400 200 360 180 320 160 280 140 240 120 200 100 160 80 120 60 Power Output (kW) 80 40 () 40 Power Output (kW) 20 Torque (Nm) 0 0 1.000 2.000 3.000 4.000 5.000 6.000 7.000 Rev (rpm)