High-speed diesel engine oil composition, preparation method thereof and marine diesel engine oil
By compounding high-alkalinity calcium sulfonate and alkylphenol calcium sulfide into marine high-speed diesel engine oil, the problem of insufficient detergency and dispersancy has been solved, achieving effective cleaning of high-sulfur heavy fuel oil and extending the service life of engine components.
CN122214064APending Publication Date: 2026-06-16CHINA PETROLEUM & CHEMICAL CORP +1
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Patent Information
- Application Number
- CN202411839209.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-13
- Publication Date
- 2026-06-16
AI Technical Summary
Technical Problem
Existing marine high-speed diesel engine oils have insufficient detergency and dispersancy when faced with substandard fuel, making it difficult to effectively remove deposits.
Method used
A diesel engine oil composition is formed by compounding high-alkalinity calcium sulfonate and calcium alkylphenol sulfide as detergents, combined with additives such as high-molecular-weight succinimide and zinc diisooctyl dithiophosphate, to improve detergent and dispersant performance.
Benefits of technology
It significantly improves the detergency and dispersancy of diesel engine oil, effectively addressing the deposit problem caused by high-sulfur heavy fuel oil and extending the oil change interval of engine components.
✦ Generated by Eureka AI based on patent content.
Abstract
The invention relates to the technical field of lubricating oil, and provides a high-speed diesel engine oil composition, a preparation method thereof and marine diesel engine oil, the high-speed diesel engine oil composition comprises the following components: base oil, a clearing agent, a dispersing agent, an antioxidant, a viscosity index agent, a pour point depressant and an anti-foaming agent; the detergent is composed of calcium sulfonate and sulfurized calcium alkyl phenolate; the calcium sulfonate is composed of high-base-number calcium sulfonate and low-base-number calcium sulfonate, and the mass ratio of the high-base-number calcium sulfonate to the low-base-number calcium sulfonate is 1: (1-2); the mass ratio of the medium-base-number sulfurized calcium alkyl phenolate to the high-base-number sulfurized calcium alkyl phenolate is 1: (1.5-2.5). The marine high-speed diesel engine oil composition has better detergency and dispersibility, and can meet the working conditions of marine high-speed diesel engines with poor-quality fuel oil.
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