3 speed shift sequence l.
Download
Skip this Video
Loading SlideShow in 5 Seconds..
3-Speed Shift Sequence PowerPoint Presentation
Download Presentation
3-Speed Shift Sequence

Loading in 2 Seconds...

play fullscreen
1 / 28

3-Speed Shift Sequence - PowerPoint PPT Presentation


  • 291 Views
  • Uploaded on

3-Speed Shift Sequence. Simpson Geartrain, . Simpson 3-Speed Transmissions. Transmissions that use a Simpson 3-speed geartrain include: DaimlerChrysler: 30RH, 36RH, & 30TH Ford: C4, C5, & C6 General Motors: 3L80/TH 400, 3T40/TH125, TH 200 & TH 350 JATCO: 3N71B

loader
I am the owner, or an agent authorized to act on behalf of the owner, of the copyrighted work described.
capcha
Download Presentation

PowerPoint Slideshow about '3-Speed Shift Sequence' - halle


An Image/Link below is provided (as is) to download presentation

Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author.While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.


- - - - - - - - - - - - - - - - - - - - - - - - - - E N D - - - - - - - - - - - - - - - - - - - - - - - - - -
Presentation Transcript
3 speed shift sequence

3-Speed Shift Sequence

Simpson Geartrain,

Tom Birch, 8/06

simpson 3 speed transmissions
Simpson 3-Speed Transmissions

Transmissions that use a Simpson 3-speed geartrain include:

DaimlerChrysler: 30RH, 36RH, & 30TH

Ford: C4, C5, & C6

General Motors: 3L80/TH 400, 3T40/TH125, TH 200 & TH 350

JATCO: 3N71B

Toyota: A40, A41, A131, & A132

Tom Birch, 8/06

neutral
Neutral

Rear Clutch

Output Shaft with Ring Gear and Carrier

Front Clutch

Input Shaft, from Torque Converter

Both clutches are released so torque does not get to the planetary gearset.

Tom Birch, 8/06

gearset
Gearset

Sun Gear & Shell

Front Portion

Input/Front Ring Gear

Intermediate One-Way Clutch

Output/Rear Ring Gear

Output/Front Carrier

One-Way Clutch

Reaction/Rear Carrier

Rear Portion

Tom Birch, 8/06

gearset 2
Gearset 2

Front/Output Front/Input Sun Gear & Rear/Reaction Rear/output Low- Rev. Carrier Ring Gear Drive Shell Carrier Ring Gear Band

One-Way Clutch Output Shaft Park Gear & Governor

Tom Birch, 8/06

schematic gearset
Schematic, Gearset

Front Ring Gear

Torque Converter

Rear Ring Gear

Output

Input

Front Carrier Sun Gear Rear Carrier

A schematic is the simplest way to show this Torqueflite transmission gear train and its control devices.

Tom Birch, 8/06

schematic control devices
Schematic, Control Devices

High-Reverse Clutch

Intermediate Band

Low-Reverse Band

One-Way Clutch

Output

Input

Forward Clutch

These are the control devices. They are all released in neutral.

Tom Birch, 8/06

hydraulics neutral
Hydraulics, Neutral

The manual valve limits the paths where hydraulic pressure can flow.

Tom Birch, 8/06

shift to drive
Shift to Drive

Moving the manual valve allows fluid pressure to flow to the 1-2 Shift Valve, Governor, Rear Clutch, and Accumulator.

Tom Birch, 8/06

1 st gear low
1st Gear, Low

Rear Clutch, Applied

One-Way Clutch, Holding

The rear clutch is applied and driving the front/input ring gear. The one-way clutch is holding the reaction carrier from rotating counterclockwise. The gearset is in a reduction ratio of 2.5:1.

Tom Birch, 8/06

gearset11
Gearset

Rear Planetary

Front Planetary

With the vehicle stopped, the front carrier becomes a reaction member, and the front planetary produces a reverse reduction. The rear planetary also produces a reverse reduction, and the two reverses make a forward reduction.

Tom Birch, 8/06

Animation: PGS 3

schematic 1st
Schematic, 1st

One-Way Clutch Holding

Forward/Rear Clutch Applied

A simple view of the 1st gear power flow.

Input Reaction Output

Tom Birch, 8/06

governor pressure
Governor Pressure

When the vehicle moves, the governor (arrow) is spun by the output shaft. This moves the governor weights, and generates fluid pressure in the governor passages (orange).

Tom Birch, 8/06

shift to 2nd
Shift to 2nd

Governor pressure has moved the 1-2 shift valve to upshift. This sends pressure to the front servo to apply the front/ intermediate band. The accumulator strokes to give a smooth shift.

Tom Birch, 8/06

2 nd gear intermediate
2nd Gear, Intermediate

Rear Clutch, Applied

Intermediate Band, Applied

The rear clutch is applied and driving the front/input ring gear. The intermediate band is holding the sun gear from rotating . The gearset is in a reduction ratio of 1.5:1.

Tom Birch, 8/06

gearset16
Gearset

The rotating ring gear forces the planet gears to walk around the stationary sun gear, and this drives the carrier at a reduced speed.

Tom Birch, 8/06

Animation: PGS 3

schematic 2nd
Schematic, 2nd

Intermediate Band Applied

Forward/Rear Clutch Applied

A simple view of the 2nd gear power flow.

Input Reaction Output

Tom Birch, 8/06

shift to 3rd
Shift to 3rd

Increased governor pressure has moved the 2-3 shift valve to upshift. This sends pressure to the front clutch and to the front servo to release the band.

Tom Birch, 8/06

3 rd gear high
3rd Gear, High

Rear Clutch, Applied

Front Clutch, Applied

The rear clutch is applied and driving the front/input ring gear. The front clutch is driving the sun gear. The gearset is locked up in a ratio of 1:1.

Tom Birch, 8/06

gearset20
Gearset

Driving both the ring and sun gears will lock the gearset in direct drive, a 1:1 ratio.

Tom Birch, 8/06

Animation: PGS 7

schematic 3rd
Schematic, 3rd

Rear/High-Reverse Clutch Applied

Forward/Rear Clutch Applied

A simple view of the 3rd gear power flow.

Input Reaction Output

Tom Birch, 8/06

shift to reverse
Shift to Reverse

Moving the manual valve to reverse allows fluid pressure to flow to the rear servo to apply the rear band and to the front clutch.

Tom Birch, 8/06

reverse
Reverse

Rear Band, Applied

Front Clutch, Applied

The front clutch is driving the sun gear. The rear band is holding the reaction carrier from rotating. The gearset is in a reverse ratio of 2.20:1.

Tom Birch, 8/06

gearset24
Gearset

The rotating sun gear forces the planet gears to turn the ring gear in a reverse reduction ratio.

Tom Birch, 8/06

Animation: PGS 2

schematic reverse
Schematic, Reverse

Rear/High-Reverse Clutch Applied

Low-Reverse Band Applied

A simple view of the reverse gear power flow.

Input Reaction Output

Tom Birch, 8/06

variations
Variations

Center Support/ Low Roller Output Ring Output Input Drum Clutch Housing Clutch Gear Shaft

Sun Gear Low & Reverse Clutch Reaction Carrier

Some transmissions like the THM 200 use a Low & Reverse clutch to hold the reaction carrier in reverse and manual 1.

Tom Birch, 8/06

variations 2
Variations 2

Intermediate Clutch Intermediate One-Way Plates Clutch

Direct Clutch Drum

Intermediate Band Race

Some transmissions like the THM 350 uses an intermediate clutch and one-way clutch to hold the sun gear in 2nd gear. The intermediate band is used in Manual 2nd.

Tom Birch, 8/06

variations 3
Variations 3

Low One- Sun Gear Main Input Ring Output Shaft Way Clutch Band Shaft Sun Gear Shaft Gear

Reaction Carrier Ring Gear/ Output Carrier

The THM 400 has the gearset turned end-for-end so the output ring gear/carrier is connected directly to the output shaft.

Tom Birch, 8/06