Back to results
US 12,410,377 B2Granted
Electric vehicle grease
AssigneeVgp Ipco LLC
InventorsJacob Bonta, Lucas Tomko
Life of this patent
Estimating the term…
Abstract
A lubricating grease for electric vehicle applications includes thickener 6% by weight (wt. %) to 12 wt. %, lubricating oil 57 wt. % to 92.98 wt. %, and surface-active ester 1 wt. % to 10 wt. %. The lubricating grease also includes additives including friction reducer and modifier 0.1 wt. % to 5 wt. %, anti-wear agent 0.1 wt. % to 5 wt. %, and a balance of extreme pressure agent, oxidation inhibitor, and corrosion inhibitor.
Claims17
A lubricating grease for electric vehicle applications comprising:
- a thickener in a range of 6% by weight (wt. %) to 12 wt. %;
- a lubricating oil consisting of synthetic oil selected from API (American Petroleum Institute) groups III and IV in a range of 57 wt. % to 92.98 wt. %;
- a surface-active ester in a range of 8 wt. % to 10 wt. %, the surface-active ester comprising a synthetic copolymer of alpha-olefins and dicarboxylic acids esterified with short to medium chain alcohols comprising about 3 to 12 carbon atoms;
- and
- an additive comprising:
- a friction reducer and a modifier in a range of 0.1 wt. % to 5 wt. %;
- an anti-wear agent in a range of 0.1 wt. % to 5 wt. %;
- and
- an extreme pressure agent, an oxidation inhibitor, and a corrosion inhibitor,
- wherein the lubricating grease is formulated to provide tribological protection for the electrical vehicle applications, and
- wherein the surface-active ester is an oil with a carbon backbone with two distinct side chains, the first side chain is hydrophobic, and the second side chain is polar, and
- wherein the lubricating oil has a bulk KV 100 of about 2 cSt or less than 2 cSt.
9 more elements
A lubricating grease for electric vehicle applications comprising:
- a thickener in a range of 6% by weight (wt. %) to 12 wt. %;
- a lubricating oil in a range of 57 wt. % to 92.98 wt. %;
- and
- a surface-active ester present in an amount of 3 wt. % to 8 wt. %, the surface-active ester comprising a synthetic copolymer of alpha-olefins and dicarboxylic acids esterified with short to medium chain alcohols comprising about 3 to 12 carbon atoms,
- wherein the lubricating grease excludes a friction reducer and a modifier, an anti-wear agent, an extreme pressure agent, an oxidation inhibitor, and a corrosion inhibitor, and is formulated to provide tribological protection for the electrical vehicle applications, and
- wherein the surface-active ester is an oil with a carbon backbone with two distinct side chains, the first side chain is hydrophobic, and the second side chain is polar.
3 more elements
A method of lubricating components in an electric vehicle, comprising
- applying a lubricating grease in the components in the electric vehicle, wherein the lubricating grease comprises:
- a thickener in a range of 6% by weight (wt. %) to 12 wt. %;
- a lubricating oil in a range of 57 wt. % to 92.98 wt. %, the lubricating oil consisting of synthetic oil selected from API groups III and IV;
- and
- a surface-active ester in a range of 3 wt. % to 8 wt. %, the surface-active ester comprising a synthetic copolymer of alpha-olefins and dicarboxylic acids esterified with short to medium chain alcohols comprising about 3 to 12 carbon atoms, wherein the lubricating grease excludes a friction reducer and a modifier, an anti-wear agent, an extreme pressure agent, an oxidation inhibitor, and a corrosion inhibitor, and wherein the surface-active ester is an oil with a carbon backbone with two distinct side chains, the first side chain is hydrophobic, and the second side chain is polar.
2 more elements
Dependencies are inferred from the claim text.