Manual Drivetrains and Axles Fourth Edition

More documents

Recommendations

Info

LAPELLETIES GEAR SET The Lapelleties (pronounced La-plet-e-ay) gear set was invented by Pierre Lapelleties, a retired engineer who figured out a unique way to create a simple and efficient six-speed automatic transmission gear set. It was first produced by ZF in 2002. The Lapelleties gear set is constructed by connecting a planetary gear set in front of a Ravigneaux gear set. Besides ZF, General Motors uses the Lapelleties gear set in the 6L45, 6L50, and 6L90 rear-wheel-drive transmission and Ford uses it in their 6R60, 6R75, and 6R80. Continued
CONTINUOUSLY VARIABLE TRANSMISSION A continuously variable transmission (CVT) is usually found on front-wheel-drive vehicles, which use a transaxle. Instead of using three or more gears, a continuously variable transmission uses two variable width pulleys sometimes called variators to change the gear ratio from about 2.5:1 to an overdrive ratio of 0.5:1. See Figure 100–21. Continued
Page 2 and 3:
OBJECTIVES: After studying this pre
Page 4 and 5:
KEY TERMS: compound planetary gear
Page 6 and 7: Automatic transmissions were first
Page 8 and 9: Figure 100-1 A cross-sectional view
Page 10 and 11: Figure 100-2 Fluid flow within a to
Page 12 and 13: Figure 100-4 The vane curvature of
Page 14 and 15: Figure 100-5 The torque converter b
Page 16 and 17: Figure 100-6 The inner oil pump gea
Page 18 and 19: Figure 100-7 The transmission input
Page 20 and 21: Figure 100-8 On a transaxle, the tu
Page 22 and 23: Figure 100-9 Torque multiplication
Page 24 and 25: Coupling Phase When the speed ratio
Page 26 and 27: Stall Speed During converter stall,
Page 28 and 29: Vehicle manufacturers select torque
Page 30 and 31: Figure 100-11 An expanded view of a
Page 32 and 33: Once lockup occurs, the clutch may
Page 34 and 35: The summary of torque converter ope
Page 36 and 37: Vehicle speed is above 35 mph (55 k
Page 38 and 39: NOTE: The application of the torque
Page 40 and 41: Automatic Transmission Fluid Cooler
Page 42 and 43: Figure 100-15 A cutaway section of
Page 44 and 45: A simple planetary gear set consist
Page 46 and 47: All gears in a planetary gear set a
Page 48 and 49: Figure 100-17 To transmit torque th
Page 50 and 51: Figure 100-18 Different modes of tr
Page 52 and 53: SIMPSON GEAR SET A compound planeta
Page 54 and 55: RAVIGNEAUX GEAR SET Another popular
Page 58 and 59: Figure 100-21 The belt-and-pulley C
Page 60 and 61: Parts and Operation Most CVT units
Page 62 and 63: CAUTION: With any CVT unit, use of
Page 64 and 65: Servicing Continuously Variable Tra
Page 66 and 67: SUMMARY 4. A typical planetary gear
show all

Manual Drivetrains and Axles Fourth Edition

You also want an ePaper? Increase the reach of your titles

Delete template?

Save as template?