Synthetic lubricating oil composition and application thereof

By combining synthetic ester base oils and compound additives, the problem of insufficient lubrication performance of diesel engine oil under low-temperature conditions has been solved, achieving low-temperature starting and high-temperature cleaning properties of the lubricating oil in extremely cold weather, thus meeting the lubrication requirements of the engine and transmission system.

CN121930896APending Publication Date: 2026-04-28PETROCHINA CO LTD
2 Cites 0 Cited by

Patent Information

Application Number
CN202411511005.0
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2024-10-28
Publication Date
2026-04-28

AI Technical Summary

Technical Problem

Existing diesel engine oils have limited performance at low temperatures, making it difficult to meet the lubrication requirements of engines and transmission systems, especially in extremely cold weather where cold starts are difficult and friction and wear performance is poor.

Method used

By using synthetic ester base oils and composite additives, including low-viscosity and high-viscosity synthetic esters, pour point depressants, detergents, ashless dispersants, antioxidants, and anti-wear agents, a lubricating oil composition with ultra-high viscosity index and excellent low-temperature performance is formed. Through specific proportions and structural design, it satisfies high-temperature detergency and low-temperature start-up performance.

Benefits of technology

It achieves excellent low-temperature starting performance of the lubricating oil in extremely cold weather, meets the lubrication requirements of the engine and transmission system, passes the TES 439 specification friction characteristics and oxidation test, and realizes the standardization of oils used in the engine and transmission system.

✦ Generated by Eureka AI based on patent content.
Patent Text Reader

Abstract

The invention provides a synthetic lubricating oil composition and application thereof, and belongs to the technical field of lubricating oil. The synthetic lubricating oil composition comprises base oil, a pour point depressant and a composite additive, the base oil comprises synthetic ester base oil; the synthetic ester base oil consists of low-viscosity synthetic ester and high-viscosity synthetic ester. The composition has ultrahigh viscosity index and low-temperature performance, is diesel engine lubricating oil with very excellent low-temperature performance, passes a graphite flake friction characteristic test and a THOT oxidation test required by TES 439 specifications, and can meet the lubrication requirements of an engine and a transmission system.
Need to check novelty before this filing date? Find Prior Art