Oblon, McClelland, Maier & Neustadt, L.L.P.
Vehicular drive system
A vehicular drive system includes an engine having a first oil, a transmission having a second oil, and a heat exchanger 4 that exchanges heat between the first oil and the second oil. The magnitude of the amount of reduction of loss torque in the transmission per unit amount of reduction of the kinetic viscosity of the second oil is larger than the magnitude of the amount of increase of loss torque in the engine per unit amount increase of the kinetic viscosity of the first oil.
TOYOTA JIDOSHA KABUSHIKI KAISHA
F F F F F F F F B F F Y B B F
F16H F16H F16H F28D F16H F01M F16H F16H B60K F16H F16H Y10S B60Y B60Y F16H
inventional additional inventional additional inventional inventional inventional inventional additional additional inventional additional additional additional inventional
Daisuke Kazuya Takahiro
Tokozakura Arakawa Shiina