System, composition and method of application of same for reducing the coefficient of friction and required pulling force during installation of wire or cable
US-9458404-B1 · Oct 4, 2016 · US
Lubricating oil composition
US9353329B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9353329-B2 |
| Application number | US-201214115026-A |
| Country | US |
| Kind code | B2 |
| Filing date | Jan 20, 2012 |
| Priority date | May 6, 2011 |
| Publication date | May 31, 2016 |
| Grant date | May 31, 2016 |
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Abstract
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The present invention provides a lubricating oil composition for an internal combustion engine used mainly to drive a generator and to improve the fuel economy thereof. The composition comprises (A) a base oil being a hydrocarbon base oil having a ratio (CA/CB) of the proportion of the component of 24 or fewer carbon atoms (CA) and the proportion of the component of 25 or more carbon atoms (CB) in the carbon number distribution obtained by gas chromatography distillation of 2.0 or higher, the composition having a ratio (Vs/Vk) of the 80° C. high-temperature high-shear (HTHS) viscosity (Vk) and the 150° C. HTHS viscosity (Vs) of 0.4 or higher and a 100° C. kinematic viscosity of 5.2 mm 2 /s or higher and 8 mm 2 /s or lower.
First claim
Opening claim text (preview).
The invention claimed is: 1. A lubricating oil composition comprising (A) a hydrocarbon base oil having a ratio (CA/CB) of proportion of component of 24 or fewer carbon atoms (CA) and proportion of component of 25 or more carbon atoms (CB) in a carbon number distribution obtained by gas chromatography distillation of 2.0 or higher, the composition having a ratio (Vs/Vk) of 80° C. high-temperature high-shear (HTHS) viscosity (Vk) and 150° C. HTHS viscosity (Vs) of 0.4 or higher and a 100° C. kinematic viscosity of 5.2 mm 2 /s or higher and 8 mm 2 /s or lower, wherein the hydrocarbon base oil is a mineral base oil selected from (a) a hydrocarbon base oil produced by subjecting a lubricating oil fraction produced by atmospheric- and/or vacuum-distillation of a crude oil to one or more refining processes selected from solvent deasphalting, solvent extraction, hydrocracking, solvent dewaxing, catalytic dewaxing, hydrorefining, sulfuric acid treatment, and clay treatment, and (b) a synthetic base oil selected from poly-α-olefins and hydrogenated compounds thereof, isobutene oligomers and hydrogenated compounds thereof, paraffins, alkylbenzenes, and alkyl naphthalenes. 2. The lubricating oil composition according to claim 1 , further comprising (B) a viscosity index improver having a ratio of weight-average molecular weight and PSSI of 1.2×10 4 or greater. 3. The lubricating oil composition according claim 1 , wherein the composition is an engine oil for a generator. 4. The lubricating oil composition according claim 2 , wherein the composition is an engine oil for a generator.
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Ethene · CPC title
Metal containing thio derivatives · CPC title
containing aromatic monomers, e.g. styrene · CPC title
Noack Volatility · CPC title
Internal-combustion engines · CPC title
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- What does patent US9353329B2 cover?
- The present invention provides a lubricating oil composition for an internal combustion engine used mainly to drive a generator and to improve the fuel economy thereof. The composition comprises (A) a base oil being a hydrocarbon base oil having a ratio (CA/CB) of the proportion of the component of 24 or fewer carbon atoms (CA) and the proportion of the component of 25 or more carbon atoms (CB)…
- Who is the assignee on this patent?
- Miyamoto Hiroya, Yaguchi Akira, Jx Nippon Oil & Energy Corp
- What technology area does this patent fall under?
- Primary CPC classification C10M145/14. Mapped technology areas include Chemistry & Metallurgy.
- When was this patent published?
- Publication date Tue May 31 2016 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).