【作者】

W.P.A. van Houten

【摘要】

该论文已在赫尔辛基举行的第28届CIMAC大会上发表，论文的版权归CIMAC所有。Major changes are underway for Marine Trunk Piston Engine Oils (TPEO). Use of distillate fuels in combination with increased use of API group II base oils, longer drain intervals and lower specific lubricating oil consumption present significant technical challenges. Product to meet those challenges can’t be developed by only utilizing laboratory bench tests. To ensure reliable performance for the end users, validation of product performance in field applications is a must. On January-1st 2015 the 0.1% m/m fuel sulfur limit, or equivalent sulfur exhaust, came into force for ships operated inside Emission Control Areas (ECA). At this point in time the Baltic Sea area, the North Sea area, the North American area and the United States Caribbean Sea area are establish ECAs, however it is expected that the number of established ECAs will grow. Looking forward, considering the expected growth in the number of ECA’s, the use of low sulfur distillate fuel in shipping application will grow significantly. Likewise it is expected that the demand for engine lubricants that allow for operation of ships on such fuel will grow. As we anticipate changes in fuel usage in the market, changes in the base oil market continue to change as well. API group I heavy neutral base oil has been the base oil of choice for marine engine lubricants for decades. However as group I base oil plants have gradually been supplanted by newer, more cost efficient group II base oil plants, the use of API group II heavy neutral base oil in marine engine lubricants has increased significantly in recent years. As API group I heavy neutral base oil availability decreases so does the availability of API group I bright stock, which leads to the need for alternative lubricant thickening agents to allow for blending marine lubricant viscosity grades. Chevron Oronite has developed TPEO additive technology for engine operation on lower than 0.1% m/m fuel sulfur that combines in one formulation: • excellent piston cleanliness • excellent sludge control • excellent viscosity increase control • extended drain interval capability • base oil flexibility • significantly reduced need for bright stock Extensive statistical design of experiment studies on lab scale performance screening tests have been executed to select the most promising additive technology and formulating approaches. The best candidates have been further optimized utilizing our laboratory engine testing capabilities. The optimized candidates were thereafter evaluated in field applications to validate their performance. The data demonstrates that the use of laboratory scale performance screener tests provides valuable information that allows for developing additive technology and selecting viable formulation approaches. However there are always candidates which look very good in bench tests that do not perform well in engine stand tests or field trials. Engine testing and field performance evaluation is essential to ensure that the end user does indeed get the desired performance.

【会议名称】

第28届CIMAC会议

【会议地点】

芬兰 赫尔辛基

【下载次数】

2

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