See a demonstration of the basic mechanical operation of a planetary gear set

TIMELINE:
0:00 Introduction
0:45 The parts of a simple planetary gear set
1:50 Possible gear ratios of a single planetary gear set
2:18 Underdrive gear ratios
2:54 Overdrive gear ratios
3:50 Reverse gear ratios
4:00 Direct drive ratio
4:16 Usable gear ratios
6:18 The physical size of gears is related to their torque capacity
7:35 How power is transferred through a planetary gear set
8:58 Reverse
9:12 Underdrive
10:00 Overdrive
10:25 Direct drive
11:32 The three Allison 1000 transmission planetary gear sets
12:53 Parking gear and pawl
27:05 Function of Five Allison transmission clutch packs
31:25 Allison 1000 Clutch application chart
33:40 Universal transmission operation theory
38:34 Powerflow through the Allison 1000 planetary gear sets
40:37 First gear
42:19 Second gear
43:38 Third gear
44:21 Fourth gear
45:12 Fifth gear
46:10 Sixth gear
46:35 Reverse
47:48 Troubleshooting
50:32 Video summary

This video is intended for students in the online AUSV 2520 Automatic Transmissions class at Weber State University in Ogden, Utah. This class is normally taught facetoface, but due to the COVID19 Pandemic in 2020, I am attempting to offer the class material online. Suggested quiz questions are shown below the video timeline.

Questions for teachers:
1. What are the three main pieces of a simple planetary gear set?
2. How many underdrive gear ratios are possible with a simple planetary gear set?
3. How many overdrive gear ratios are possible with a simple planetary gear set?
4. How many reverse gear ratios are possible with a simple planetary gear set?
5. How many direct gear ratios are possible with a simple planetary gear set?
6. How many usable/practical gear ratios are possible with a simple planetary gear set?
7. How is power typically transferred through a simple planetary gear set?
8. How does the parking gear keep the vehicle from rolling in the park position?
9. What does the term "Compound simple planetary gear set" mean?
10. What is the function of the clutch packs in the Allison 1000?
11. What component in a transmission causes clutch packs to apply?
12. What component controls the valves in the valve body?
13. What component controls the electronics in the valve body?
14. Use the Allison 1000 clutch application chart download from below for the remainder of the questions
15. Which clutches are used to provide first gear? Choose two: C1, C2, C3, C4, C5
16. Which clutches are used to provide second gear? Choose two: C1, C2, C3, C4, C5
17. Which clutches are used to provide third gear? Choose two: C1, C2, C3, C4, C5
18. Which clutches are used to provide fourth gear? Choose two: C1, C2, C3, C4, C5
19. Which clutches are used to provide fifth gear? Choose two: C1, C2, C3, C4, C5
20. Which clutches are used to provide sixth gear? Choose two: C1, C2, C3, C4, C5
21. Which clutches are used to provide reverse gear? Choose two: C1, C2, C3, C4, C5
22. Tell me one thing you learned or found interesting in this assignment?

Download the Allison 1000 clutch application chart at https://weberstate.box.com/s/3tat9ski...

ABOUT US:
Weber State University (WSU) Automotive Technology Department Automatic Transmission Lab. A technical description and demonstration of the basic mechanical operation of a planetary gear set in an automatic transmission or transaxle. Components from the Allison 1000 Transmission were used in the majority of this video.

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 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!

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