Crossover AWD 4WD Systems

>> YOUR LINK HERE: ___ http://youtube.com/watch?v=BMv_v9IBugU

TIMELINE: • 0:00 Introduction • 0:35 Power Transfer Unit (PTU) • 1:40 The Link Shaft (Axle shaft) • 2:22 Transaxle differentials and the link shaft connection • 4:16 The PTU connection to the differential case • 6:00 The internal parts of a PTU • 7:40 The spool and the ring gear • 8:10 The PTU spool connection to the transaxle differential case • 8:48 The transaxle final drive underdrive gear ratio of 4.356:1 • 10:05 The PTU gear overdrive ratio of 0.439:1 • 11:58 The rear axle gear ratio of 2.2779:1 • 13:05 Two different axle gear ratios on the same vehicle • 14:36 The rear driveline spins at an RPM related to the rear axle gear ratio, not the front final drive gear ratio. • 15:33 The rear driveline does not always have a direct connection to the pinion gear • 18:08 On-vehicle view of the PTU • 19:58 On-vehicle view of the three-piece driveline • 21:12 On-vehicle view of the rear differential with a clutch pack connection • 24:15 Summary • ABOUT US: • Weber State University (WSU) - Automotive Technology Department - Transmission Lab. This episode covers the operation of a typical Crossover All Wheel Drive (AWD/4WD) system with a Power Transfer Unit PTU) on a Crossover SUV. A Crossover SUV is a vehicle that is primarily front-wheel drive but can have an all-wheel drive or 4-wheel drive option. We teach current vehicle technologies to our automotive students at Weber State University and online. For more information visit: http://www.weber.edu/automotive • This video was created and edited by Professor John D. Kelly at WSU. For a full biography, see http://www.weber.edu/automotive/J_Kel... • Visit my other youtube channel / vibratesoftware to see the amazing NVH app for vibration diagnosis! • This video helps satisfy the requirements of the following NATEF Tasks: • 3.F.5 – 4WD/AWD - Diagnose noise, vibration, and unusual steering • concerns; determine necessary action - Priority Level 3 • Question for Teachers: • 1. What is a Crossover SUV? • 2. What the meaning of the PTU abbreviation? • 3. Is a PTU used on a vehicle with a transversely-mounted engine or a longitudinally-mounted engine? • 4. To what part is the PTU housing attached? • 5. To what transaxle part is the PTU spool and ring gear attached? • 6. What effect does the PTU have on the front differential action of the transaxle? • 7. Is the rear driveshaft driven faster or slower than the PTU spool and ring gear? • 8. What is the Front transaxle gear ratio of the vehicle in the video? • 9. What is the rear axle gear ratio of the vehicle in the video? • 10. How can there be two different gear ratios on the same vehicle and still have all the tires spin at the same speed? • 11. How is power transferred from the driveline (Propeller shaft) to the rear axle? • 12. What is the purpose of the electrical connector at the rear axle? • 13. Name two conditions under which power transferred to the rear axle? • 14. Tell me one thing you learned from this video • DONATE TO OUR DEPARTMENT • Please consider a donation to the Department of Automotive Technology at Weber State University here: http://advancement.weber.edu/Automotive

#############################

New on site