Мимо пролежал, а также
многие документы SAE построены на данных анализа отработки, например
SAE paper 2007-01-1990: compares UOA data from individual engines running in a fleet of Taxi cabs, where they are running two different oils in the same family of engines, then the engines are torn down for visual inspection in an effort to determine the effectiveness of oils high in ZDDP versus the Taxis that used oils low in ZDDP. The UOA data was collected from individual cars, just as what has been done here, and trends for one oil to perform better than another were seen. The individual numbers varied from each engine, but the delta (the change in wear metals from the low ZDDP oil to the high ZDDP oil) is what was considered. High ZDDP oil did have less engine wear in the UOA’s, and was confirmed when the engines were torn down for inspection.
SAE paper 932838: compares UOA data from two LS1 engines in an effort to establish synthetic versus mineral oil degradation based on oil change interval length. They looked for trends to see if a synthetic oil would reduce wear over conventional.
SAE paper 2001-01-1899: compares UOA data from Chrysler V6 engines to determine if newer grades of GF-3 oils (which saw a reduction in AW/FM additives) are capable of meeting the lubrication requirements for DOHC, high performance, fuel efficient engines. There was a pattern for one type of oil to do better than another.
SAE paper 2004-01-1963: UOA data collected in intervals from another fleet test, every vehicle having the same model of engine, and the UOA results are compared from the urban transport fleet’s reference model engine to determine the effectiveness of UOA data. This test was extensive, but the conclusions speak for themselves, “wear rate has been identified as a more valuable parameter for engine wear condition, as obtained by wear concentration measurements directly obtained from spectrometry.” The paper concludes that individual ppm UOA numbers and ferrography numbers are misleading, that the trends of engine wear from multiple UOA’s are what should be considered.
SAE paper 2005-01-3818: Another UOA comparison paper from a Taxi fleet service, where 0W-20 and 5W-20 oils are compared. Same thing, wear rate trends between the two are what is considered.
SAE paper 981448: this paper discusses UOA data being used for evaluating oil drain periods, similar to the GM test, only different oils weren’t compared. The UOA’s were found to be very useful in determining an engine’s wear rate with a particular oil and when that oil is best changed out.
А также данными UOA пользуются многие специалисты, например из The Lubrizol Corp, Ford Motor Co.
И это НЕОДНОКРАТНО обсуждалось на формуме. Именно по этому Торкон прав, что не хочет тратить на вас время.