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Lepelletier Gearset PowerPoint PPT Presentation


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Lepelletier Gearset. 6-Speed Gearset. Lepelletier Gearset Transmissions. Transmissions that use a Lepelletier geartrain include: Aisin AW: TR-6, TF-60SN, & TF80SN Ford: 6R60 & 6R75 General Motors: 6L80 ZF: 6HP19 & 6HP26. Transaxle & Transmission. FWD Transaxle RWD Transmission.

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Lepelletier Gearset

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Lepelletier gearset l.jpg

Lepelletier Gearset

6-Speed Gearset

Tom Birch, 8/06


Lepelletier gearset transmissions l.jpg

Lepelletier Gearset Transmissions

Transmissions that use a Lepelletier geartrain include:

Aisin AW: TR-6, TF-60SN, & TF80SN

Ford: 6R60 & 6R75

General Motors: 6L80

ZF: 6HP19 & 6HP26

Tom Birch, 8/06


Transaxle transmission l.jpg

Transaxle & Transmission

FWD Transaxle RWD Transmission

This is a compact 6-speed geartrain with FWD and RWD configurations, and it uses only six control devices.

Tom Birch, 8/06


Schematic geartrain l.jpg

Schematic, Geartrain

Simple Gearset Ravigneaux Gearset

The Lepelletier design uses a simple gearset to drive a Ravigneaux gearset.

Tom Birch, 8/06


Gearset l.jpg

Gearset

Simple Gearset Ravigneaux Gearset

  • The simple gearset portion serves as a reduced-speed input in first through fifth and reverse gears.

  • The Ravigneaux part of the gearset is similar to the gearset used in a Ravigneaux 4-speed transmission.

Tom Birch, 8/06


Gear ratios l.jpg

Gear Ratios

Tom Birch, 8/06


Schematic geartrain 2 l.jpg

Schematic, Geartrain 2

Ring Gear Carrier Long pinions Ring Gear

Short Pinions

Sun Gear Large Sun Gear Small Sun Gear

Tom Birch, 8/06


Schematic control devices l.jpg

Schematic, Control Devices

C3 C1

B1 B2

C2

The nomenclature for many modern transmissions uses the terms C for clutch (driving member) and B for brake (holding member).

Tom Birch, 8/06


Variation l.jpg

Variation

F1

Some Lepelletier geartrains include a one-way clutch (F1) to allow a freewheeling 1-2 shift.

Tom Birch, 8/06


Clutch schedule l.jpg

Clutch Schedule

This is a synchronous, overlap geartrain.

Tom Birch, 8/06


Schematic neutral l.jpg

Schematic, Neutral

All clutches are released.

Input Reaction Output

Tom Birch, 8/06


Schematic 1 st gear l.jpg

Schematic, 1st Gear

C1 Applied

B2 Holding

Ratio: 4.15:1

C1 drives the small sun gear at a reduced speed in 1st, 2nd, 3rd, and 4th gears.

Input Reaction Output

Tom Birch, 8/06


Schematic 2 nd gear l.jpg

Schematic, 2nd Gear

C1 Applied

B1 Holding

Ratio: 2.37:1

Input Reaction Output

Tom Birch, 8/06


Schematic 3 rd gear l.jpg

Schematic, 3rd Gear

C1 Applied

C3 Applied

Ratio: 1.56:1

Input Reaction Output

Tom Birch, 8/06


Schematic 4 th gear l.jpg

Schematic, 4th Gear

C1 Applied

Ratio: 1.15:1

C2 Applied

Input Reaction Output

Tom Birch, 8/06


Schematic 5 th gear l.jpg

Schematic, 5th Gear

C3 Applied

Ratio: 0.86:1

C2 Applied

Input Reaction Output

Tom Birch, 8/06


Schematic 6 th gear l.jpg

Schematic, 6th Gear

B1 Holding

Ratio: 0.69:1

C2 Applied

Input Reaction Output

Tom Birch, 8/06


Schematic reverse l.jpg

Schematic, Reverse

C3 Applied

B2 Holding

Ratio: 3,39:1

Input Reaction Output

Tom Birch, 8/06


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