Optimize Test And Low Temperature Performance, Based On The Uniform Design Of Gasoline Engine Oil (15w/40sh) Formula

The development status and trend of gasoline engine oil at home and abroad are described in this paper .The tribology and lubrication characteristic and lubrication mechanism of the main tribo-pairs of gasoline engine are analyzed simply .In this paper base oil and some additives are chosen reasonably according to the lubricantions principal and a lot of data .The uniform design of experiment is used to arrange multi-level and multi-factor experiments .The stepwise technique is adopted to analyze the result .The sensitivity and compatibility among additives and the base oil are studied by a series of tests .On the basis of analyzing the low temperature capability the optimum of 15W/40 SH gasoline engine oil is presented .At last ,the property of this formulation is evaluated by comparing with the imports .The test result shows that their qualities are equivalent.