Toyota U transmission

Last updated

Toyota Motor Corporation's U family is a family of automatic front-wheel drive/rear-wheel drive/four-wheel drive transmissions found in later vehicle models.

Contents

U1xx

U140E

Applications

1st2nd3rd4thReverseFinal
3.9382.1941.4111.0193.1413.480

U140F

Applications

1st2nd3rd4thReverseFinal
3.9382.1941.4111.0193.1413.080

U142E

U150E

5 speed automatic transaxle

Gear ratios for this transmission

1st2nd3rd4th5thReverseFinal
3.9382.1941.4110.9730.7033.1413.478

Applications

U151E

5 speed automatic transaxle

Gear ratios

1st2nd3rd4th5thReverseFinal
4.2352.3601.5171.0470.7563.378Varies

Applications

U151E Final Drive Ratios

Camry/Solara Highlander Sienna/Rav4
3.2913.4783.080

U151F

5 speed automatic transaxle (4x4)

Application

U2xx

U240E

4 speed automatic transaxle

Gear ratios for this transmission.

1st2nd3rd4thReverseFinal
3.9432.1971.4131.0203.1453.120

Applications

U241E

Gear ratios

1st2nd3rd4thReverseFinal
3.9432.1971.4131.0203.1452.740

Applications

  1. 4 cyl. "Aurion Version" in South east Asia 2.0 liter Previa

U250E

The U250E is a 5-speed version of the U241E.

Gear ratios

1st2nd3rd4th5thReverseFinal
3.9432.1971.4130.9750.7033.1453.391

Applications

U3xx

U340E

4 speed automatic transaxle

Gear ratios

1st2nd3rd4thReverseFinal
2.8471.5521.0000.7002.3434.237

Application

U341E

Gear ratios

1st2nd3rd4thReverseFinal
2.8471.5521.0000.7002.3434.237

Application

U341F

1st2nd3rd4thReverseFinal
2.8471.5521.0000.7002.3434.237

Application

U6xx

Production of the U660E and U660F commenced in January 2006, Toyota's first 6-speed automatic transaxles for front-wheel-drive vehicles; transaxles feature a compact gear train that achieves six speeds using a single axis to produce a high torque of 400 Nm, and are as low cost, compact, and light as 4-speed automatic transaxles [1] The transaxle is a Lepelletier design which uses a simple gear set to drive a Ravigneaux planetary gear set (with long and short pinion gears in the same planet carrier). [2]

U660E

6 speed automatic transverse (V6) 6 speed version of the U151E and F

Application

1st2nd3rd4th5th6thReverseFinal
3.3001.9001.4211.0000.7130.6094.148Varies

u660e Final Drive Ratios

Avalon

08-12

Avalon

13-15

Blade

07-12

Camry

08-11

Camry

12-15

Highlander

14-15

Sienna

11-15

Venza

09-15

Zio

07-13

Lotus

Evora

3.6853.2383.6853.6853.4584.1543.9354.3983.6853.685

U660F

Application

U661 E/F

6 speed automatic communicates with engine to calculate torque with reduced-friction clutch and thrust bearings multi-mode automatic transmission, electronically controlled transmission with intelligence (ECT-i)

1st2nd3rd4th5th6thReverseFinal FWDFinal AWD
3.3001.9001.4201.0000.7130.6084.1483.8884.117
2WDAWD
3.8884.117

U760E/F

U760E/F

6 speed automatic transaxle (I4) 6 speed version light duty version of the U660E/F

Application

1st2nd3rd4th5th6thReverseFinal
3.3001.9001.4201.0000.7130.6084.1483.815

U761E

Application

U760F

Application

UA 80E/F · UB 80E/F · UB 81E/F

Production of the UA 80E and UA 80F commenced in August 2016. This transaxle features a compact gear train that achieves eight speeds using a single axis allowing for input torque up to 430Nm. It is a more compact and optimized version of the U880 automatic transmission structure with additional features for improved performance and efficiency. The marketing name for the transmission is the "Direct Shift – 8AT 8-speed automatic transmission" [3] [4] Unlike the UB 80 transmission, which was developed for Toyota by Aisin AW, the UA 80 was developed in a joint venture between Toyota and Aisin AW. Due to global application, development was done in a global fashion involving engineering resources in both Japan and the US. The UB 80E/F transmissions are used for lower torque applications, 4 cylinder engines, and rated at 280  N⋅m (207  lb⋅ft ). [5]

Specifications

Gear Ratios [a]
Aisin Toyota
Gear
Year
R2 [b] R112345678Total
Span
Span
Center
Avg.
Step
Compo-
nents
AW F8 F45UA 80E/F2016−2.059−4.2215.5193.1842.0501.4921.2351.0000.8010.6738.2001.9271.3513
Gearsets
2
Brakes
4
Clutches
AW F8 F35UB 80E/F2017−2.059−4.0155.2503.0291.9501.4571.2211.0000.8090.6737.8001.8801.341
TG-80LSUB 80E/F2017−2.053−4.0035.0702.9721.9501.4701.2311.0000.8080.6727.5401.8461.335
TBDTBDTBD−2.182−4.2555.2002.9711.9501.4701.2241.0000.8170.6867.5831.8881.336
  1. Differences in gear ratios have a measurable, direct impact on vehicle dynamics, performance, waste emissions as well as fuel mileage
  2. Logically, the gearset concept (layout) provides for this 2nd reverse gear, but it will most likely not be used in the transmissions that the car manufacturers eventually bring to market. In some data sheets, the gear ratio of R2 is given, presumably a careless error

UA 80E

8 speed direct shift automatic transverse for high torque (430 Nm) applications (V6)

Application

UA 80F

Application

UB 80E

8 speed direct shift automatic transverse for low torque (280 Nm) applications

Application

UB 80F

8 speed automatic transaxle (V6)

Application

UB 81E/F

8 speed automatic transaxle (V6)

Application

UP3xx

P311

CVT automatic transaxle

Application

P410

See also

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References

  1. "Toyota Global Drivetrain Technical Development" (Press release). Toyota. 2011-12-31. Retrieved 2016-01-03.
  2. Archived at Ghostarchive and the Wayback Machine : U660E / U760E 6-Speed Automatic Transaxle Ravigneaux Gear Set and Components. YouTube .
  3. "'The Year of More' for the 2017 Highlander with More Power, More Safety, and More Model Choices". 27 September 2016.
  4. YouTube, a Google company. YouTube . Archived from the original on 2020-04-08.
  5. "Benchmarking a 2018 Toyota Camry UB80E Eight-Speed Automatic Transmission" (PDF). SAE International. Retrieved 14 April 2020.