Transmission fluid

Number of patents in Portfolio can not be more than 2000

United States of America

PATENT NO 12173251
APP PUB NO 20240002744A1
SERIAL NO

18253795

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ATTORNEY / AGENT: (SPONSORED)

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Abstract

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Implementations of the disclosed subject matter provide a lubricating composition for use as a transmission fluid in an electric vehicle. The lubricating composition may include at least 70 wt %, based on the overall weight of the lubricating composition, of a biodegradable ester base oil with a kinematic viscosity at 100° C. in the range of 2.5 to 7.0 mm2/s. The ester is biodegradable according to OECD test guidelines series 301. The composition may also include at least 0.5 wt % and no more than 10 wt %, based on the overall weight of the lubricating composition, of a viscosity index improver which is at least one high viscosity ester with a kinematic viscosity at 100° C. of at least 1000 mm2/s; an anti-foam additive selected from silicone oil based antifoam additives and polyacrylate antifoam additives. Also disclosed is a process for lubricating an electric vehicle drive train comprising a transmission by applying the lubricating composition to the transmission.

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Patent Owner(s)

Patent OwnerAddress
SHELL USA INCPO BOX 576 HOUSTON TX 77001-0576

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Dobrowolski, Christopher Claus Hamburg, DE 1 0
Kieckebusch, Leonard Joachim Hamburg, DE 2 0

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