A lubricating oil composition that provides wear prevention with low viscosity.

The lubricating oil composition addresses fuel efficiency and wear resistance issues by using a specific blend of DPMA, ethylene-based olefin copolymer, and magnesium detergent, achieving enhanced lubrication and wear prevention in internal combustion engines.

JP2026121377APending Publication Date: 2026-07-24CHEVRON ORONITE TECH BV +1
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Patent Information

Authority / Receiving Office
JP · JP
Patent Type
Applications
Current Assignee / Owner
CHEVRON ORONITE TECH BV
Filing Date
2026-04-24
Publication Date
2026-07-24

AI Technical Summary

Technical Problem

Existing lubricants for internal combustion engines face challenges in improving fuel efficiency while maintaining effective wear resistance, as reducing viscosity often leads to increased deposit formation and impaired sealing, and current additives can compete with anti-wear components.

Method used

A lubricating oil composition with a HTHS viscosity of 1.3 to 2.9 cP at 150 °C, comprising a major amount of lubricating viscosity oil, dispersant polymethacrylate (DPMA) with a molecular weight of 200,000 to 450,000 g/mol, a non-dispersive ethylene-based olefin copolymer viscosity index improver with a molecular weight of 50,000 to 150,000 g/mol, and magnesium-containing detergent, without molybdenum-containing elements.

Benefits of technology

The composition enhances fuel efficiency and reduces wear by optimizing viscosity and additive properties, providing improved lubrication and wear resistance without the harmful effects of traditional additives.

✦ Generated by Eureka AI based on patent content.

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Abstract

The following lubricants are provided: [Solution] (a) an oil with a major lubricating viscosity, (b) a dispersant polymethacrylate (DPMA) VII, (c) a non-dispersible ethylene-based olefin copolymer viscosity index improver, and (d) a magnesium-containing detergent; wherein the lubricating oil composition is substantially free of molybdenum-containing elements. A method is also provided for improving friction and reducing wear in an internal combustion engine using the engine lubricating oil composition.
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