Study On Lube Oil For Bus Diesel Engine Only

With the increasing voice for energy-saving and environment protection of international society, diesel engine developed very fast in recent years, for its superiority in the aspects of economy, power and emission to gasoline engine.According to engine construction, fuel property and burning characteristic of diesel engine, combining the special driving condition and the practical problem such as wear sharply and produce more oil sludge. To analyse and make certain the request of the bus diesel engine for the lubricating oil.Then the base oil compatibility to between and the additive sensitivity were analyzed by the experiments in laboratory to make certain the best formula, expect to develop a 15W/40 bus diesel engine lubricating oil at high performance and low price that can solve the wear problem and prolong the heavy repair mileage.Contented the demand of performance of the bus diesel engine lubricating oil, referred interrelated professional data, chose the appropriate additives considerate, the base oil compatibility to between and the additive sensitivity were analyzed by the massive simulant experiments in laboratory. Then, according to the results of experiments, fixed on various additives and theirs adding amount. Sum up the above experiment results, designed entire formula scheme by orthogonal design, through a mount of evaluating targets study the overall sensitivity of base oil to additives, processed and analyzed the experiment tests, and fixed on the best formula scheme of bus diesel engine lubricating oil in the end. Then, compared the developed lubricating oil with the lubricating oil chosed as the contrast in performance targets in the lab, it indicats that developed lubricating oil are superior to the contrast one on important simulant experiment targets, such as detergency,high temperature dispersancy,low temperature dispersancy, anti-oxidation property, anti-wear property and EP property. In order to validate the developed lubricating oil's practical using capability farther,arranged the contrast road test,the result of the test shows that developed lubricating oil are superior to the contrast one on important experiment targets, such as anti-oxidation property, detergency,high temperature dispersancy, low temperature dispersancy and alkali value reservation. It indicats that the developed lubricating oil can satisfy special requests of bus diesel engine.Finally,according to the analysis of the result of road test,considered all kinds of factors, fixed 15 000km on as the rational oil changing periods.