TY - JOUR
T1 - Half-Toroidal Traction Drive Continuously Variable Transmission for Automobile Propulsion Systems (Traction Drive Materials, Transmission Design and Efficiency)
AU - Machida, Hisashi
AU - Hata, Hitoshi
AU - Nakano, Masaki
AU - Tanaka, Hirohisa
PY - 1993
Y1 - 1993
N2 - Environmental issues such as exhaust emission have stimulated the development of a flexible transmission for an engine-vehicle propulsion system. The authors have been researching and developing the rolling-type CVT, continuously variable transmission, of a half-toroidal traction drive for about 14 years. It represents engineering achievement in the fields of heat treatment technology of rolling elements which transmit tangential force at a maximum Hertzian pressure of 2.7 GPa, and of molecular design technology of synthetic traction fluid which works in the temperature range of -30 to 140°C. The paper shows the design principle of rolling element fatigue life and shear strength of traction fluid at high temperature, and discusses the performance of two types of CVTs of a single cavity with 80kW and a double cavity with 200 kW transmission capacity.
AB - Environmental issues such as exhaust emission have stimulated the development of a flexible transmission for an engine-vehicle propulsion system. The authors have been researching and developing the rolling-type CVT, continuously variable transmission, of a half-toroidal traction drive for about 14 years. It represents engineering achievement in the fields of heat treatment technology of rolling elements which transmit tangential force at a maximum Hertzian pressure of 2.7 GPa, and of molecular design technology of synthetic traction fluid which works in the temperature range of -30 to 140°C. The paper shows the design principle of rolling element fatigue life and shear strength of traction fluid at high temperature, and discusses the performance of two types of CVTs of a single cavity with 80kW and a double cavity with 200 kW transmission capacity.
KW - Automobiles
KW - Continuously Variable Transmission
KW - Fatigue Life
KW - Power Transmission
KW - Traction Drive
KW - Traction Fluid
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U2 - 10.1299/kikaic.59.1154
DO - 10.1299/kikaic.59.1154
M3 - Article
AN - SCOPUS:0027576173
SN - 0387-5024
VL - 59
SP - 1154
EP - 1160
JO - Nihon Kikai Gakkai Ronbunshu, C Hen/Transactions of the Japan Society of Mechanical Engineers, Part C
JF - Nihon Kikai Gakkai Ronbunshu, C Hen/Transactions of the Japan Society of Mechanical Engineers, Part C
IS - 560
ER -