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4-Speed Overdrive Gearset, Version 2

4-Speed Overdrive Gearset, Version 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.

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4-Speed Overdrive Gearset, Version 2

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  1. 4-Speed Overdrive Gearset, Version 2 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 2 is the DaimlerChrysler 41TE; its first designation was A-604. Similar models are the 42LE and 42RLE. Tom Birch, 8/06

  3. 41TE Geartrain Underdrive ClutchRear Ring Gear Rear Carrier Transfer Gears Input Hub Overdrive/Reverse Clutch Underdrive Hub Overdrive Hub Front Carrier Rear Sun Gear Differential Transfer Shaft Final Drive Gears Tom Birch, 8/06

  4. Schematic, Geartrain Front Ring Rear Ring Gear Gear Rear Carrier Front Carrier Front Rear Sun Gear Sun Gear Tom Birch, 8/06

  5. Overdrive Geartrain Front RingRear RingGearGear Note that the front ring gear and rear carrier are combined. The rear ring gear and front carrier are also combined. Front Carrier Rear Carrier Tom Birch, 8/06

  6. Schematic, Control Devices Underdrive Overdrive Reverse Clutch Clutch Clutch 2-4 Low-Reverse Clutch Clutch Note that there are no bands or one-way clutches. Tom Birch, 8/06

  7. Synchronous/Overlap Shifts This is a transaxle with synchronous, overlap shifts. One clutch is released as another clutch is applied during upshifts and downshifts, and these events must be carefully timed or synchronized. Electronic controls help this happen seamlessly. Tom Birch, 8/06

  8. Schematic, Neutral Low-Reverse Clutch Applied The Low/Reverse clutch is applied to to hold the front carrier/rear ring gear. This prepares for the N-D or N-R shift. Tom Birch, 8/06

  9. Gearset, Neutral Low-Reverse Clutch Applied Tom Birch, 8/06

  10. Gearset, 1st Gear Underdrive Clutch Applied, Low-Reverse Clutch Applied Gear Ratio, 2.8:1 Input Reaction Output Tom Birch, 8/06

  11. Schematic, 1st Gear Low-Reverse Clutch Holding Underdrive Clutch Applied Gear Ratio, 2.8:1 Input Reaction Output Tom Birch, 8/06

  12. Gearset, 2nd Gear Underdrive Clutch Applied 2-4 Clutch Applied Input Reaction Output Gear Ratio, 1.6:1 Tom Birch, 8/06

  13. Schematic, 2nd Gear 2-4 Clutch Holding Underdrive Clutch Applied Gear Ratio, 1.6:1 The rear ring gear (yellow) transfers torque to the front carrier. Input Reaction Output Tom Birch, 8/06

  14. Gearset, 3rd Gear Underdrive Clutch Applied Overdrive Clutch Applied Input Reaction Output Gear Ratio, 1:1 Tom Birch, 8/06

  15. Schematic, 3rd Gear Underdrive Clutch Applied Overdrive Clutch Applied Gear Ratio, 1:1 Input Reaction Output Tom Birch, 8/06

  16. Gearset, 4th Gear Overdrive Clutch Applied 2-4 Clutch Applied Input Reaction Output Gear Ratio, 0.69:1 Tom Birch, 8/06

  17. Schematic, 4th Gear 2-4 Clutch Holding Overdrive Clutch Applied Gear Ratio, 0.69:1 Input Reaction Output Tom Birch, 8/06

  18. Gearset, Reverse Low-Reverse Clutch Applied Reverse Clutch Applied Gear Ratio, 2.2:1 Input Reaction Output Tom Birch, 8/06

  19. Schematic, Reverse Low-Reverse Clutch Holding Reverse Clutch Applied Gear Ratio, 2.2:1 Input Reaction Output Tom Birch, 8/06

  20. Variations, 42LE The 42LE transaxle is used with a longitudinal mounted engine. It uses the same gearset with a transfer chain and sprockets and a hypoid final drive gears. Transfer Chain & Sprockets Hypoid Gearset Tom Birch, 8/06

  21. Variations, 42RLE This transmission has a different case with an extension housing and output shaft extension (11). It is used in RWD and 4WD vehicles. Tom Birch, 8/06

  22. Variations, 62TE Six-Speed Four Speed Gearset Compounder Gearset Tom Birch, 8/06

  23. Comparison of Shift Points Six speeds allow the engine to stay closer to optimum efficiency than four speeds. Tom Birch, 8/06

  24. Compounder Assembly 1. Transfer Shaft 2. Planetary Gear Set 3. Direct Clutch 4. Low Clutch 5. One-Way Clutch Tom Birch, 8/06

  25. Planetary Assembly Carrier (output) Sun Gear Clutch Housing Ring Gear (Input) Tom Birch, 8/06

  26. “What’s On When” Tom Birch, 8/06

  27. 62TE Powerflow 1st Gear Underdrive Clutch (1) Applied Low-Reverse Clutch (2) Applied Low Clutch (3) Applied One-Way Clutch (4) Effective Tom Birch, 8/06

  28. 62TE Powerflow 2nd Gear Underdrive Clutch (1) Applied Low-Reverse Clutch (2) Applied Direct Clutch (3) Applied Tom Birch, 8/06

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