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4-Speed Overdrive Gearset, Version 1

4-Speed Overdrive Gearset, Version 1. Overdrive Gearset. Overdrive gearsets combine two simple planetary gearsets so that the ring gear of each gearset is connected to the carrier of the second set.

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4-Speed Overdrive Gearset, Version 1

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  1. 4-Speed Overdrive Gearset, Version 1 Tom Birch, 8/06

  2. Overdrive Gearset Overdrive gearsets combine two simple planetary gearsets so that the ring gear of each gearset is connected to the carrier of the second set. The transmission described as Version 1 is the General Motors 4L60E; its first designation was THM 700. Tom Birch, 8/06

  3. 4L60E Gearset Sun Output Reaction Ring Gear Carrier Gear 2-4 Band Reverse Input Clutch Input Housing Sun Gear Rear Low Roller Reaction Output Output Shaft Shell Sun Gear Clutch Carrier Ring Gear Tom Birch, 8/06

  4. 4L60E Gearset, 2 Reaction Sun Gear Output Reaction Ring Carrier Gear 2-4 Band Input Housing Output Ring Gear Sun Gear Shell Input Input Sun Roller Gear Clutch Reverse Input Clutch Reaction Carrier Tom Birch, 8/06

  5. Schematic, Geartrain Input Ring Output Ring Gear Gear Reaction Carrier Input Carrier Input Reaction Sun Gear Sun Gear Tom Birch, 8/06

  6. Geartrain Note From the previous slide, note that the Input Carrier and Output Ring Gear are connected to each other and are connected to the output shaft. The Input Ring Gear and Reaction Carrier are also connected to each other. General Motors has given the name ‘Input Planetary’ to the front gearset and ‘Reaction Planetary’ to the rear geaset. The ‘Input Carrier’ is an output member. Tom Birch, 8/06

  7. Schematic, Control Devices 2-4 Band Reverse Input Clutch 3-4 Clutch Low/Reverse Clutch Low Roller Clutch Overrun Forward Clutch Clutch Input Roller Clutch Tom Birch, 8/06

  8. Schematic, Neutral All clutches are released. Tom Birch, 8/06

  9. Gearset, 1st Gear Low Roller Clutch Effective Forward Clutch is applied Gear Ratio, 3.1:1 Input Roller Clutch Effective Input Reaction Output Tom Birch, 8/06

  10. Schematic, 1st Gear Forward Clutch Applied Low Roller Clutch Effective Input Roller Clutch Effective Gear Ratio, 3.1:1 The overrun clutch is applied in Manual 1. Input Reaction Output Tom Birch, 8/06

  11. Gearset, 2nd Gear 2-4 Band Applied Forward Clutch Applied Input Roller Clutch Effective Gear Ratio, 1.6:1 Input Reaction Output Tom Birch, 8/06

  12. Schematic, 2nd Gear 2-4 Band Applied Forward Clutch Applied Input Roller Clutch Effective Gear Ratio, 1.6:1 The overrun clutch is applied in Manual 2. Input Reaction Output Tom Birch, 8/06

  13. Gearset, 3rd Gear Forward Clutch Applied 3-4 Clutch Applied Input Roller Clutch Effective Gear Ratio, 1:1 Input Reaction Output Tom Birch, 8/06

  14. Schematic, 3rd Gear Forward Clutch Applied 3-4 Clutch Applied Input Roller Clutch Effective Gear Ratio, 1:1 The overrun clutch is applied in Manual 3. Input Reaction Output Tom Birch, 8/06

  15. Gearset, 4th Gear 2-4 Band Applied 3-4 Clutch Applied Input Roller Clutch Overrunning Gear Ratio, 0.7:1 Input Reaction Output Tom Birch, 8/06

  16. Schematic, 4th Gear 2-4 Band Applied Forward Clutch Applied 3-4 Clutch Applied Input Roller Clutch Overrunning Gear Ratio, 0.7:1 Input Reaction Output Tom Birch, 8/06

  17. Gearset, Reverse Reverse Input Clutch Applied Low/Reverse Clutch Applied Gear Ratio, 2.3:1 Input Reaction Output Tom Birch, 8/06

  18. Schematic, Reverse Reverse Input Clutch Applied Low/Reverse Clutch Applied Gear Ratio, 2.3:1 Input Reaction Output Tom Birch, 8/06

  19. Variations, 41TE Underdrive, Overdrive, & Reverse Clutches Input Shaft Rear Sun Gear Rear Carrier Transfer Gears Front Carrier Rear Ring Gear Differential Transfer Shaft Final Drive Gears Tom Birch, 8/06

  20. Variations, 41TE Schematic • The gearset is turned end-for-end. • There are no bands or one-way clutches. Tom Birch, 8/06

  21. Variations, 4T60E • The 4T60E gearset is turned end-for-end. • The 4T60E has two additional control devices. Tom Birch, 8/06

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