Answer Happy

Question : (15 points) Consider that you are designing an engine for a sports car, where you need to high vehicle speed. Two different 3.0 L engines are proposed by the same manufacturer to you, where power and torque curves are as provided below. Please note that both engines are having the same size but using different fuels. a) (5 pts) Which engine do you prefer for the sports car? Why? b) (10 pts) By analyzing the power and torque curves, please determine the type of fuel used for the selected engine. Please give all reasons for your selection Engine A Torque, Nm Power output, kW 180 360 165 330 150 300 135 270 120 240 105 210 90 T 180 75 150 60 120 45 90 30 Motorleistung Power output Drehmoment / Torque nach 89/491/EWG acc. to 89/491 EEC 60 15 30 0 0 1000 2000 3000 4000 5000 6000 7000 Motordrehzahl min Engine speed in rpm Engine B
60 120 45 90 30 Motorleistung Power output Drehmoment / Torque nach 89/491/EWG acc. to 89/491 EEC 50 15 30 0 1000 2000 3000 4000 5000 6000 7000 Motordrehzahl min Engine speed in rpm Engine B 140 400 14,200 1,750 2,500 120 350 100H 300 Torque 250 Power Power [kW] 200 150 Torque [Nm] 20 100 1000 2000 3000 4000 5000 Engine speed (rpm)