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US 12,012,566 B2Granted
Lubricant composition
AssigneeIdemitsu Kosan Co., Ltd.
InventorsPedro Cawich, Takashi Yanagihara
Life of this patent
Estimating the term…
Abstract
A motor configured to power an electric or hybrid vehicle, comprising a lubricant oil composition including a polyalkylene glycol (PAG) base oil, at least one of a poly-alpha-olefin (PAO) and an ester, and an additive package that includes at least a sulfur-based extreme pressure agent.
Claims9
A motor configured to power an electric or hybrid vehicle, comprising a lubricant oil composition, the lubricant oil composition including:
- a polyalkylene glycol (PAG) base oil;
- at least one diester and at least one polyol ester that includes three or more ester groups;
- an additive package that includes at least a sulfur-based extreme pressure agent;
- and
- optionally a poly-alpha-olefin (PAO),
- wherein a total amount of the at least one diester and the at least one polyol ester in the lubricant oll composition is in the range of 20 to 43% by mass;
- an amount of the at least one diester being up to 13% by mass, and an amount of the at least one polyol ester being at least 7% by mass and up to 30% by mass;
- the sulfur-based extreme pressure agent includes a sulfur aliphatic acid;
- the lubricant oil composition includes 50% by mass or more of the PAG;
- and
- the PAG has an average molecular weight (Mn) in the range of 500 to 3000.
8 more elements
Dependencies are inferred from the claim text.