FE.3. Suppose a conventional vehicle has a powertrain with a naturally aspirated gasoline engine and a...
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FE.3. Suppose a conventional vehicle has a powertrain with a naturally aspirated gasoline engine and a manual gearbox. The basic vehicle and engine data: Parameter Symbol Value Unit Vehicle mass mveh 1800 kg Minimum allowed engine speed WICE,min 110 rad/s Maximum allowed engine speed WICE,max 550 rad/s Maximum engine torque TICE,max 200 Nm Final drive gear ratio final 3 Wheel radius "wheel 0.3 m The gearbox gear ratios from the 1st to 5th gear are: - 1st gear: 3.0 - 2nd gear: 2.0 - 3rd gear: 1.5 - 4th gear: 1.0 - 5th gear: 0.80 Assumptions: Maximum engine torque is approximated as constant at all engine speeds. Efficiency of the transmission is assumed to be 100%. FE.3a.l. What is the minimum vehicle speed (km/h) for gear 1? Enter your answer in the input field below as an integer number. km/h FE.3a.ll. What is the maximum vehicle speed (km/h) for gear 1? Enter your answer in the input field below as an integer number. km/h FE.3b.I. What is the minimum vehicle speed (km/h) for gear 2? Enter your ancwor in the innut field below or an integer number FE.3b.I. What is the minimum vehicle speed (km/h) for gear 2? Enter your answer in the input field below as an integer number. km/h FE.3b.ll. What is the maximum vehicle speed (km/h) for gear 2? Enter your answer in the input field below as an integer number. km/h FE.3c.I. What is the minimum vehicle speed (km/h) for gear 3? Enter your answer in the input field below as an integer number. km/h FE.3c.II. What is the maximum vehicle speed (km/h) for gear 3? Enter your answer in the input field below as an integer number. km/h FE.3d.l. What is the minimum vehicle speed (km/h) for gear 4? Enter your answer in the input field below as an integer number. km/h FE.3d.ll. What is the maximum vehicle speed (km/h) for gear 4? Enter your answer in the input field below as an integer number. km/h FE.3e.l. What is the minimum vehicle speed (km/h) for gear 5? Enter your answer in the input field below as an integer number. km/h FE.3e.ll. What is the maximum vehicle speed (km/h) for gear 5? Enter your answer in the input field below as an integer number. km/h FE.3. Suppose a conventional vehicle has a powertrain with a naturally aspirated gasoline engine and a manual gearbox. The basic vehicle and engine data: Parameter Symbol Value Unit Vehicle mass mveh 1800 kg Minimum allowed engine speed WICE,min 110 rad/s Maximum allowed engine speed WICE,max 550 rad/s Maximum engine torque TICE,max 200 Nm Final drive gear ratio final 3 Wheel radius "wheel 0.3 m The gearbox gear ratios from the 1st to 5th gear are: - 1st gear: 3.0 - 2nd gear: 2.0 - 3rd gear: 1.5 - 4th gear: 1.0 - 5th gear: 0.80 Assumptions: Maximum engine torque is approximated as constant at all engine speeds. Efficiency of the transmission is assumed to be 100%. FE.3a.l. What is the minimum vehicle speed (km/h) for gear 1? Enter your answer in the input field below as an integer number. km/h FE.3a.ll. What is the maximum vehicle speed (km/h) for gear 1? Enter your answer in the input field below as an integer number. km/h FE.3b.I. What is the minimum vehicle speed (km/h) for gear 2? Enter your ancwor in the innut field below or an integer number FE.3b.I. What is the minimum vehicle speed (km/h) for gear 2? Enter your answer in the input field below as an integer number. km/h FE.3b.ll. What is the maximum vehicle speed (km/h) for gear 2? Enter your answer in the input field below as an integer number. km/h FE.3c.I. What is the minimum vehicle speed (km/h) for gear 3? Enter your answer in the input field below as an integer number. km/h FE.3c.II. What is the maximum vehicle speed (km/h) for gear 3? Enter your answer in the input field below as an integer number. km/h FE.3d.l. What is the minimum vehicle speed (km/h) for gear 4? Enter your answer in the input field below as an integer number. km/h FE.3d.ll. What is the maximum vehicle speed (km/h) for gear 4? Enter your answer in the input field below as an integer number. km/h FE.3e.l. What is the minimum vehicle speed (km/h) for gear 5? Enter your answer in the input field below as an integer number. km/h FE.3e.ll. What is the maximum vehicle speed (km/h) for gear 5? Enter your answer in the input field below as an integer number. km/h
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