| With the rapid increase of the automobile in China, the imbalance between supply and demand of the gasoline or diesel oil appears gradually. Then the automobile's exhaust gas is being harmed to the ecological environment more and more. So using substitute fuel especially gaseous fuel in automobile is becoming a development focus. There are very abundant natural gas resources in our country. The natural gas as the automobile-used fuel holds good emission performance and higher using economy. So many cities include Xi'an are developing the natural gas automobile especially CNG/gasoline dual-fuel automobile energetically, and it has already formed certain scale at present. But in the course of using natural gas as fuel, CNG/gasoline dual-fuel engine may appear some problems such as the engine wear and tear with corrosion, the decrease of engine oil service life etc.According to the existing problems, through analyzing the physical and chemical characteristic of the natural gas and gasoline and the working characteristic of the CNG/gasoline dual-fuel engine, this paper draws the conclusion that the anti-oxidation capability of gasoline engine oil can not meet the request of CNG/gasoline dual-fuel engine, and summarizes the concrete requirement of anti-oxidation capability to the CNG/gasoline dual-fuel engine oil. On the basis of consulting a great deal of data and papers and using infrared spectroscopy technology which has advanced and fast character and other test methods, the paper carries on evaluating and filtrating performance of four kind of basic oil and six kind of antioxidant and corrosion inhibitors which used commonly. According to the experimental result, the good anti-oxidation capability basic oil which produced by adopting the hydrogen craft and bright oil had been compounded. According to the experimental result of one and two kinds of antioxidant and corrosion inhibitors and the requirements to the anti-oxidation capability of CNG/gasoline engine oil, the... |
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