Design and Diagnostics Features of Automatic Transmissions of the GM 6T Family Tashkent State Transport University

Format:

Book

Conference/Event

Author/Creator:

Turakulov, Bakhtiyor, author.

Conference Name:

WCX SAE World Congress Experience (2025-04-08 : Detroit, Michigan, United States)

Language:

English

Physical Description:

1 online resource cm

Place of Publication:

Warrendale, PA SAE International 2025

Summary:

Automatic transmission (AT) is a complex hydroelectromechanical system, since it consists of hydraulic, electrical and mechanical parts.On cars produced by "UzAuto Motors" mainly AT of the 6T family, 6-speed AT family GM: 6T30, 6T40, 6T45, 6T50 "Hydra-Matic" are used.Production of parts of these transmissions is carried out both at American GM plants and at GM plants in China and Korea.The differences between AT 6T30/6T40/6T45/6T50 are in the thickness of the output chain and in the planetary gear, in the sizes of some other units and the housing itself. But the differences are much more influenced by the settings of the transmission unit, which select operating modes with different engines so as not to overload the thinnest places of the automatic transmission.Automatic transmissions 6T30, 6T40, 6T45, 6T50 have the ability to manually shift gears and activate the "kickdown" mode (for quick acceleration of the car, when you sharply press the gas "all the way" it makes the automatic transmission downshift, and sometimes by two steps).The operation of the transmission is controlled by various electronic systems that are responsible for the operability and structural integrity of the gearbox.Failure of the automatic transmission can occur as a result of one or a combination of malfunctions of the following parts: in the torque converter; in the mechanical part of the gearbox; in the hydraulic part of the control system; one or more clutches of the gearbox; in the electrical part of the control system; in the electronic control unit.The authors of the work investigated and determined the occurrence of malfunctions and failures depending on the temperature of the working fluid of the automatic transmission of a passenger car.Also, the dependence of the resource of the automatic transmission on the temperature of the hydraulic fluid was obtained. High-quality diagnostics of the automatic transmission and its control system can in many cases save the car owner from expensive repairs:

Notes:

Vendor supplied data

Publisher Number:

2025-01-8506

Access Restriction:

Restricted for use by site license