A basic study on energy-efficient electric vehicle oils by applying oil film forming lubricant additive (2nd report)

Toshitaka Nakamura･Shinji Hasegawa･Takashi Furuse･Shinya Akahori･Kimikazu Itou･Soichiro Sakurada･Junnosuke Akiguchi (ENEOS)

The authors had previously developed a new additive that enabled low friction in drive units. In this study, the authors aimed to achieve further energy efficiency by utilizing the additive to suppress the increase in sliding loss through viscosity reduction. As a result of our investigations, we succeeded in developing an ultra-low viscosity EV oil that has significantly lower viscosity than commercial oils, combining energy efficiency with durability.

Study on low viscosity lubricants for electrified transmissions and compatibility with organic materials

Tsuneo Adachi･Yoshinori Ono･Walter Bunting (Afton Chemical Japan)･Christopher Cleveland (Afton Chemical)･Ryouta Iwasawa･Yumi Suzuki･Hitoshi Nakamura･Hiroyuki Kitajima･Hisashi Aoki (SUBARU)

In recent years, with the spread of electric vehicles such as HEVs and BEVs, it is expected that future lubricants and additive formulation designs for electrified vehicles will become more suitable for these applications. In this study, the effect of low viscosity lubricants on organic materials was investigated and the optimal lubricant formulation methods are explained.

Development of Fuel-Efficient Engine Oil Using Plant-Derived Materials Compliant with ILSAC GF-7 and JASO GLV-2

Yasunori Kanno･Rikuto Saito･Kazuma Yagura･Noriyuki Matui･Ko Onodera (ENEOS Corporation)

To achieve Carbon Neutrality (CN), reducing CO2 emissions through CN raw materials and improved fuel efficiency is crucial. By using plant-derived base oil to achieve CN and improving additives to comply with the latest engine oil quality standards (ILSAC GF-7, JASO GLV-2), it is expected to contribute to CN through the development of fuel-efficient engine oil.

Detection Method for Gear Pitting Using a Rule-Based Approach

Junnosuke Akiguchi (ENEOS)

In recent years, the viscosity of drivetrain lubricants has been decreasing, increasing the importance of pitting evaluation.
Traditional pitting evaluation relied on visual inspection for stage assessment, making it difficult to capture differences in lubricant performance.
However, by establishing a gear pitting detection method that combines vibration and rule-based techniques, it has become possible to more clearly compare differences in lubricant performance.