Lubricant oil composite
A lubricating oil composition, composition technology, applied in the direction of lubricating composition, petroleum industry, additives, etc., can solve the problems of deterioration of fuel consumption efficiency, deterioration of performance, unsatisfactory efficiency, etc.
Inactive Publication Date: 2008-12-10
NIPPON OIL CO LTD
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Problems solved by technology
As a result, it was found that the efficiency of fuel consumption deteriorated due to the deterioration of the friction performance at medium and high temperatures, which was considered to be important due to the recent increase in heat load, and the friction performance in the wet clutch was also extremely deteriorated.
It has also been found that the efficiency of low fuel consumption at high temperatures in the aforementioned conventional engine lubricating oils is also unsatisfactory
Method used
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Examples
Experimental program
Comparison scheme
Effect test
Embodiment 1-14 and comparative example 1 and 2
[0125]Lubricating oil compositions of the present invention (Examples 1-14) and lubricating oil compositions for comparison (Comparative Examples 1 and 2) were prepared according to the formulations in Table 2 below. The compositions of Examples 1-14 were reduced sulfated ash and contained any combination of boron-containing or boron-free succinimide. The composition of Comparative Example 1 is a conventional alkaline earth metal salicylate-based fuel-saving engine oil, while the composition of Comparative Example 2 is obtained by reducing the alkaline earth metal salicylate from the composition of Comparative Example 1 A composition such that the sulfated ash content is reduced to 0.6% by mass or less. The following SRV Friction Test and Clutch Friction Performance Test were conducted to evaluate each composition's fuel saving performance at 80-120°C and friction performance in a wet clutch. The results are shown in Table 1.
[0126] [SRV friction test]
[0127] This test ...
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Abstract
PROBLEM TO BE SOLVED: To provide a lubricating oil composition which excels in fuel consumption saving performance at middle and high temperatures and, in addition, excels in wet clutch friction properties. SOLUTION: The lubrication oil composition comprises a base oil and, based on the total weight of the composition, (A) 0.003-0.1 mass%, in terms of Mo element, organomolybdenum compound, (B) 0.08-0.3 mass%, in terms of N element, boron-containing succinimide and / or boron-free succinimide at a mass ratio of component (B) in terms of N element to component (A) in terms of Mo element of >=1.6, (C) 0.01-0.16 mass%, in terms of an alkaline earth metal, alkaline earth metal-based cleaning agent, (D) 0.01-0.1 mass%, in terms of zinc element, zinc dithiophosphate, (E) <=0.1 mass%, in terms of phosphorus element, phosphoric (phosphorous) esters and, simultaneously, with a sulfate ash in the composition of <=1 mass%.
Description
technical field [0001] The present invention relates to lubricating oil compositions, in particular to lubricating oil compositions exhibiting excellent fuel consumption efficiency over a wide temperature range from moderate to high temperatures, and more particularly to having excellent friction in addition to excellent fuel efficiency Performance lubricating oil composition suitable for use in four-stroke motorcycle engines. Background technique [0002] From the standpoint of recent environmental protection, particularly measures to reduce carbon dioxide emissions, providing an automobile with low fuel consumption is one of the important subjects. In order to reduce fuel consumption, measures such as reducing body weight, increasing fuel consumption efficiency, reducing friction between engine parts, developing and improving the driving mechanism of automobiles, and using low-fuel-consumption engine lubricating oil have been studied. For example, for friction reduction m...
Claims
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IPC IPC(8): C10M139/06C10M169/04C10M129/10C10M129/54C10M133/56C10M135/10C10M135/18C10M137/02C10M137/04C10M137/10C10M139/00C10M159/22C10M159/24C10N10/04C10N10/12C10N30/00C10N30/04C10N30/06C10N40/04C10N40/25
Inventor 石丸光明佐藤考
Owner NIPPON OIL CO LTD