The 66th Annual Meeting of Jpn. Petrol. Inst. (The 72nd R&D Symposium of JPI)
May 28 - May 29, 2024Tower Hall Funabori (Edogawa, Tokyo)
The 66th Annual Meeting of Jpn. Petrol. Inst. (The 72nd R&D Symposium of JPI)
May 28 - May 29, 2024Tower Hall Funabori (Edogawa, Tokyo)
[B05]Product development of ultra low viscosity transaxle fluid for electrified vehiclesAward lecture-JPI Award for Technological Progress
○Daisuke Tokozakura1, Takatoshi Shinyoshi1, Yohei Susukida2, Akira Tada2(1. TOYOTA MOTOR CORPORATION, 2. ENEOS CORPORATION )
Keywords:
ultra low viscosity transaxle fluid,electrified vehicles,product development
Lowering the viscosity of trans-axle oil leads to a significant reduction in the loss of the electric vehicle unit. However, reduction of viscosity causes durability problem such as wear and seizure because it is difficult to ensure oil film thickness on metal surface. We developed new trans-axle oil which is 50% lower viscosity and superior durability than conventional ATF by reviewing the additives in the oil. It was possible to improve the fuel consumption of 5th generation THS by 1.0% or more in the mode driving ,and contributing to the achievement of carbon-neutral.