Lubricating oil composition for methanol gasoline engine

Abstract

The present invention relates to an engine lubricant composite for methanol gasoline, which is prepared with 1.0 percent to 5.0 percent of metal detergent, 2.0 percent to 6.0 percent of ashless dispersant, 1.0 percent to 2.0 percent of oxidation and corrosion inhibitor, 0.1 percent to 1.0 percent of auxiliary antioxidant, 0.05 percent to 1.0 percent of glycol ester, 0.0005 percent to 0.001 percent of methyl-silicone oil, 45 percent to 80 percent of base oil and 15 percent to 40 percent of remnant oil. A comparison test, a comparative road test and a comparative engine pedestal test are conducted for the lubricant and the 15W / 40SG gasoline engine lubricant, and the results show that the performance of the lubricant is better than the performance of the 15W / 40SG gasoline engine lubricant, having the advantages of oxidation resistance, nitrification resistance, good alkali-conserving property, etc., and can reduce the carbon deposition of an engine. An engine pedestal test shows the following results: the external characteristic power is increased, and the effective fuel consumption rate is reduced by 2.3 percent on average; in terms of load characteristic, the effective fuel consumption rate is reduced by 2.7 percent on average; under the working conditions of both high idle speed and idle speed, CO is not detected, and the emission of HC is equal.

Description

technical field [0001] The invention belongs to the technical field of lubricating oil, and in particular relates to a lubricating oil composition for an engine using methanol gasoline fuel. Background technique [0002] With the shortage of oil resources and the enhancement of people's awareness of environmental protection, countries have stricter air quality control and vehicle emission requirements. All countries are stepping up the development and use of alternative fuels. The use of methanol-containing fuels in vehicle engines can reduce exhaust gas. Emit pollutants and reduce dependence on gasoline. Methanol-containing fuels have been used in many countries. my country's Shanxi Province is a pilot province for methanol-containing fuels, and has used methanol-gasoline fuels in large quantities to partially replace gasoline. Methanol gasoline as a vehicle fuel will bring some technical problems: such as increased corrosion and wear of main parts of the engine, poor sta...

AI Technical Summary

Problems solved by technology

Methanol gasoline as a vehicle fuel will bring some technical problems: such as increased corrosion and wear of main parts of the engine, poor starting and warming performance at low temperature, rapid deterioration of lubricating oil quality, increased engine deposits, and fuel nozzle clogging and other technical problems

These two lubricating oils are not suitable for use in methanol gasoline fueled engines

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