Библиографическое описание:Температурные параметры работоспособности моторных масел : научное издание / Б. И. Ковальский [и др.]. - Текст : непосредственный // Мир нефтепродуктов. Вестник нефтяных компаний. - 2019. - № 4. - С. 34-38. - ISSN 2071-5951. Перевод заглавия: Temperature performance parameters of motor oils
Аннотация:Предложен метод контроля дополнительных температурных параметров работоспособности частично синтетического моторного масла, включающий определение температур начала процессов окисления, испарения и температурных преобразований, критические температуры этих процессов.
A method is proposed to control the additional temperature parameters of the partially synthetic synthetic engine oil “Lukoil Super 10W-40 SG / CD”, including determining the temperatures of the onset of oxidation, evaporation and temperature transformations, the critical temperatures of these processes. It is shown that for comparing lubricants of a single purpose, it is necessary to take constant values of the test time and thermo-oxidative stability indicators expressing optical density, evaporation and thermal-oxidative stability coefficient. These studies are aimed at expanding information about the temperature parameters of the performance of lubricants. For the study selected all-season, universal partially synthetic engine oil “Lukoil Super 10W-40 SG / CD”. As the means of control and testing, the following were chosen: instruments for thermostating the oils, a photometric device and electronic scales. The research method was as follows. A sample of constant-weight oil 100g was poured into a glass beaker for temperature control and tested sequentially at three temperatures of 180, 170 and 160° C with stirring with a glass stirrer with a rotation speed of 300 rpm for a constant time of 8 hours. The resource of lubricating oils depends mainly on the temperature on the friction surface, which accelerates oxidation processes, temperature decomposition and chemical reactions of metals with oxidation products and additives. In this regard, it is important for designers and technologists to know the temperatures at which these processes begin and the critical temperatures at which abnormal phenomena occur. Therefore, the purpose of these studies is to test the method of control to determine these temperatures. On the basis of the conducted studies, it has been shown that the application of the proposed method for monitoring the temperature limits of the performance of motor oils provides additional information on the temperature regimes of their use and improves the classification system.
Ключевые слова:испаряемость, оптическая плотность и коэффициент термоокислительной стабильности моторных масел, методы контроля работоспособности моторных масел, evaporability, optical density and coefficient of thermo-oxidative stability of motor oils, methods of monitoring the performance of motor oils
