Lubricant composition for four-stroke motorcycle engine

A technology of lubricating oil composition and motorcycle, applied in the direction of lubricating composition, petroleum industry, additives, etc., to achieve the effect of good high temperature cleaning and excellent anti-oxidation performance

Active Publication Date: 2012-09-26
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, it is generally not possible to use automotive oil to replace four-stroke motorcycle oil

Method used

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  • Lubricant composition for four-stroke motorcycle engine
  • Lubricant composition for four-stroke motorcycle engine
  • Lubricant composition for four-stroke motorcycle engine

Examples

Experimental program
Comparison scheme
Effect test

preparation example 1-4

[0056] Add antioxidants T534, 1035, and methylidene 4426-S in proportion to the mixing container, heat at 60℃-90℃ under normal pressure, and stir for 1 hour to 2 hours to obtain a uniform transparent light yellow viscous liquid. The component A of the invention is a compound antioxidant. The composition ratio (mass fraction) of preparation examples 1-4 of the composite antioxidant is shown in Table 1.

[0057] Table 1

[0058] Serial number

Embodiment 1

[0060] Examples 1-5 are the composition and main properties of the lubricating oil composition of the present invention. The components are added to a blending container in proportion, heated at 45°C-80°C under normal pressure, and stirred for 1 hour to 2 hours to prepare a lubricating oil composition for a four-stroke motorcycle engine with a viscosity grade of 10W-40. In Comparative Examples 1, 2, and 3-1, single-component antioxidants were added, namely T534, 1035, and methylidene 4426-S. In Comparative Examples 3-2, a two-component prepared by the patent CN100460490C method was added. Compound antioxidants, in which Example 1 and Comparative Example 1, Example 2 and Comparative Example 2 have all the same formula composition except for the antioxidant, and Example 3 and Comparative Examples 3-1, 3-2 also have All the same formula composition except for antioxidants. The composition ratios (mass fractions) of Example 1-5 and Comparative Examples 1, 2, 3-1, and 3-2 are shown...

Embodiment 6-9

[0070] Examples 6-9 are the lubricating oil compositions of the four-stroke motorcycle engine with a viscosity grade of 10W-40 according to the present invention. The spot dispersion test was performed on Examples 6-9, and the formula composition and dispersion test results are shown in Table 5. Among them, the mixture of polyisobutylene succinimide and polyisobutylene succinate pentaerythritol ester was added in Examples 6 and 7, and the one-component dispersant was added in Examples 8 and 9.

[0071] table 5

[0072]

[0073] The spot dispersion test method is to add 30% program VG engine sludge to the test oil, ultrasonically disperse for 6 minutes, heat in an oven at 200°C for 2 hours, then drop the oil on the filter paper, and measure the diameter of the oil spot dispersion circle and the sludge diameter after 24 hours The ratio is the dispersion index. The higher the dispersion index, the better the dispersion of the oil.

[0074] It can be seen from the results in Table 5 t...

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Abstract

The invention relates to a lubricant composition for a four-stroke motorcycle engine. The lubricant composition comprises A) a composite antioxidant comprising at least components of 1, an alkylated diphenylamine antioxidant, 2, a thiophenolic ester antioxidant and 3, an unessential phenolic thioether antioxidant, B) a polyisobutylene succinimide dispersant and / or a polyisobutylene succinate dispersant, C) a mixture of calcium sulfonate and sulfurized calcium alkyl phenate, D) at least one zinc dialkyl dithiophosphate, E) one or more ashless friction modifiers, and F) a main amount of lubricating base oil. The lubricant composition adopts optimized combination of the multiple ashless antioxidants, is blended with the appropriate clearing agent and the dispersant, has a synergistic effect of the additives, can satisfy high-temperature antioxidation requirements of lubricating oil for a four-stroke motorcycle engine, and has excellent piston cleanliness, high / low-temperature wear resistance and a good viscosity increasing control capacity.

Description

Technical field [0001] The invention relates to an engine lubricating oil composition, in particular to a lubricating oil composition for a four-stroke motorcycle engine. Background technique [0002] Compared with the automobile engine, the four-stroke motorcycle engine is different in its structure, the cooling effect and the output power per liter of lubricating oil, which makes its working conditions more demanding, so the four-stroke motorcycle engine is required The oil has stronger high temperature resistance, thermal oxidation stability, can efficiently remove deposits on engine parts, prevent the generation of sludge, protect the engine from damage under harsh conditions, and extend the service life of the engine. In other words, the lubricating oil for four-stroke motorcycle engines must ensure stable performance under high temperature conditions, ensure reliable lubrication of all moving friction parts, and exert the motorcycle's high power, large torque and instant ac...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10M161/00C10N30/06C10N30/10C10N40/25
Inventor 谢欣张辉武志强李新华王立华段庆华钟锦声杨永璧
Owner CHINA PETROLEUM & CHEM CORP
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