Driveability Improvement with Innovative Toyota 8 Speed Automatic Transmission Control

Paper #:
  • 2017-01-1109

Published:
  • 2017-03-28
DOI:
  • 10.4271/2017-01-1109
Citation:
Ota, K., Kondo, M., Shinohara, S., Tsukamoto, N. et al., "Driveability Improvement with Innovative Toyota 8 Speed Automatic Transmission Control," SAE Technical Paper 2017-01-1109, 2017, doi:10.4271/2017-01-1109.
Pages:
9
Abstract:
To meet increasing driveability expectation and government stringent fuel economy regulations reducing CO2 emissions of passenger cars; Toyota developed a new 8-speed automatic transmission "Direct Shift-8AT".Direct Shift-8AT is the first stepped automatic transmission model based on “TNGA” philosophy.New models which received Direct Shift-8AT are the new Camry, Highlander and Sienna.Direct Shift-8AT has an innovative control method with gear train and torque converter models, providing enhanced driveability and fuel economy performance through high efficiency transmission technology.This paper describes details of the new technology and vehicle performance.
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