Drivetrain Lubricants with High Cooling and Efficiency-Boosting Properties for Electric Vehicles

Iino, Mari; Tada, Akira; Masuda, Kohei; Matsuki, Shingo; Onumata, Yasushi

doi:10.4271/2021-01-1215

Cited by 6 publications

(1 citation statement)

References 7 publications

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“…An example for this extreme pressure environment relates to gear contacts, which are prone to show a load‐dependent friction behaviour. In fact, certain gear oils such as environmentally friendly glycerol‐aqueous lubricants in EV‐specific conditions have been evaluated at extreme contact pressures ranging between 1.5 and 2.5 GPa 8,9 . In addition to friction reduction, anti‐wear and extreme pressure properties, grease technology for application in EVs must consider thermal and electrical properties, while closely analysing lubricant degradation mechanisms, which may originate from copper's reactivity.…”

Section: Introductionmentioning

confidence: 99%

Latest developments in designing advanced lubricants and greases for electric vehicles—An overview

Shah¹,

Gashi²,

Rosenkranz

2022

Lubrication Science

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According to the Environmental Protection Agency, transportation is the largest contributor of greenhouse gas emissions (28% of total emissions). Electric vehicles have remarkably grown in popularity and represent a greener future for the automotive industry. This growth has prompted lubricant and grease technology to adapt to an entirely new environment, which is exposed to new factors including external electric currents/fields and extreme temperatures and pressures originating from electric motors and power electronics. Consequently, novel lubricants and greases need to be developed and explored to ultimately improve fuel efficiency and performance. Nano-additives have offered exceptional opportunities to enhance electrical, thermal and tribological properties of the lubricants and greases used. It is thus vital to fully explore and understand the effects of nanoparticles' addition to lubricants and greases, as well as the mechanisms by which improvements are obtained. This perspective summarises the recent trends of developing lubricants and greases for electric vehicles.

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Section: Introductionmentioning

confidence: 99%

Latest developments in designing advanced lubricants and greases for electric vehicles—An overview

Shah¹,

Gashi²,

Rosenkranz

2022

Lubrication Science

View full text Add to dashboard Cite

show abstract

A concept for comparison of new and aged lubricants in transmissions of electric vehicles and a method of oil aging on a test rig

König,

Cadau,

Steidle

et al. 2023

Forsch Ingenieurwes

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Currently, the demand for electric vehicles is growing. In order to make them even more environmentally friendly, there is the possibility to replace conventional transmission oils with sustainable alternatives that must have at least the same positive properties. Therefore, the properties of a conventional oil must be determined. In this publication, which is part of a larger project, the properties of conventional oil are measured and evaluated at different stages of aging using suitable measurement methods. A test program is designed and carried out including various laboratory equipment such as a rheometer or a tribometer. The results of the investigation of the conventional oil show that there are differences between new and used conditions, even if these are small, as expected from a professional oil. In addition, a test rig setup with a specified load collective is presented to age oil on a test rig. Based on this, the sustainable oil can be aged, tested, and compared with the conventional lubricant in the further course of the project.

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Advancing the frontiers of EV tribology with 2D materials – A critical perspective

Berman,

Farfan-Cabrera,

Rosenkranz

et al. 2024

Materials Science and Engineering: R: Reports

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Drivetrain Lubricants with High Cooling and Efficiency-Boosting Properties for Electric Vehicles

Cited by 6 publications

References 7 publications

Latest developments in designing advanced lubricants and greases for electric vehicles—An overview

Latest developments in designing advanced lubricants and greases for electric vehicles—An overview

A concept for comparison of new and aged lubricants in transmissions of electric vehicles and a method of oil aging on a test rig

Advancing the frontiers of EV tribology with 2D materials – A critical perspective

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