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Lubricant composition

A kind of lubricating oil composition, lubricating oil technology, applied in the direction of lubricating composition, petroleum industry, additives, etc., can solve problems such as easy occurrence of wear, and achieve the effect of reducing friction and ensuring anti-wear properties

Inactive Publication Date: 2018-10-23
EXXON RES & ENG CO +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The use of magnesium-based detergents can further reduce friction compared to calcium-based detergents, but there is a problem that wear tends to occur

Method used

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  • Lubricant composition
  • Lubricant composition
  • Lubricant composition

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1～8 and comparative example 1～6

[0133] The components in the amounts shown in Table 1 were mixed to prepare lubricating oil compositions. The amounts of magnesium-based detergents, calcium-based detergents, and molybdenum-based friction modifiers are expressed in ppm by mass relative to the total amount of the lubricating oil composition converted to the contents of magnesium, calcium, and molybdenum, and the amounts of anti-wear agents and other additives The amount is expressed in parts by mass relative to the total amount (100 parts by mass) of the lubricating oil composition. In addition, the amounts of the magnesium-based detergent and the calcium-based detergent were made such that the total molar amounts of magnesium and calcium contained in these detergents were made as equal as possible in all Examples and Comparative Examples. The following tests were performed on the obtained composition. The results are shown in Table 1.

[0134] (1) High temperature high shear viscosity at 150°C (HTHS150)

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PUM

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Abstract

The invention provides a lubricant composition with which it is possible to reduce friction while ensuring anti-wear properties even at reduced viscosity. A lubricant composition containing a lubricant base oil, (A) a magnesium-based detergent, and (B) a molybdenum-based friction adjuster, wherein the lubricant composition is characterized in that the amount of component (A) is within the range of200-1200 ppm by mass expressed as the concentration [Mg], which is derived from the mass (ppm) of magnesium in the lubricant composition, and the amount of component (B) is within the range of 500-1500 ppm by mass expressed as the concentration [Mo], which is derived from the mass (ppm) of molybdenum in the lubricant composition.

Description

technical field [0001] The present invention relates to a lubricating oil composition, in particular, to a lubricating oil composition for an internal combustion engine, particularly a lubricating oil composition for a gasoline engine. Background technique [0002] Lubricating oil compositions have been widely used in automotive fields such as internal combustion engines, automatic transmissions, and gear oils. In recent years, in order to increase the mileage per liter of fuel, lowering of the viscosity is required, but due to the lowering of the viscosity, the oil film becomes thinner, and the friction cannot be sufficiently reduced. Therefore, molybdenum dithiocarbamate (MoDTC), which can reduce friction by generating molybdenum disulfide under boundary lubrication conditions, has been used so far. In this case, a calcium-based detergent is usually used in combination (for example, Patent Document 1). However, with this combination, there is a limit to the reduction of ...

Claims

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Application Information

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IPC IPC(8): C10M169/04C10M135/18C10M141/12C10M159/22C10N10/04C10N10/12C10N20/02C10N30/02C10N30/06C10N40/25
CPCC10M163/00C10M2207/026C10M2209/084C10M2215/28C10M2223/045C10M2219/046C10M2219/068C10N2010/12C10N2030/04C10N2030/02C10N2030/06C10N2010/04C10N2040/255C10M135/18C10M141/12C10M159/22C10M159/24C10M2207/028
Inventor 小野寺康铃木宽之金子礼志山守一雄
Owner EXXON RES & ENG CO
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