کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
9952537 | 1454777 | 2019 | 24 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Oil distribution and oil film thickness within the piston ring-liner contact measured by laser-induced fluorescence in a reciprocating model test under starved lubrication conditions
ترجمه فارسی عنوان
توزیع روغن و ضخامت فیلم روغن در داخل حلقه لاینر پیستونی، اندازه گیری شده توسط فلورسانس ناشی از لیزر در یک آزمون تطبیقی مجدد تحت شرایط روانکاری گرسنه
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کلمات کلیدی
بازگشت فلورسانس ناشی از لیزر، ریزش ضخامت فیلم روغن،
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
شیمی کلوئیدی و سطحی
چکیده انگلیسی
For a better understanding of the most important parameters and boundary conditions for scuffing initiation in the piston ring versus cylinder liner contact at fired top dead center of internal combustion engines, oil distribution measurements were performed by means of laser-induced fluorescence (LIF) on a reciprocating test rig. The 2D LIF measurements showed the change of the oil distribution in and around the contact area and verified that the oil available in the contact during the test decreased gradually over time until scuffing was initiated. For an improved quantification and increased detection limit of the oil film thickness within the contact, a sheet-of-light method was implemented, which enables evaluation of oil film thicknesses below 0.05â¯Î¼m and by which it was possible to study oil film thicknesses in the range of the surface roughness level of the counterparts. The decrease of the oil supply at the leading edge of the contact area just before scuffing initiation and the corresponding very low oil film thickness below the roughness level of the surfaces was quantitatively evaluated and proved that oil starvation was an important parameter for scuffing between piston ring and cylinder liner.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Tribology International - Volume 129, January 2019, Pages 191-201
Journal: Tribology International - Volume 129, January 2019, Pages 191-201
نویسندگان
Petra Obert, Hans-Jürgen FüÃer, Dirk Bartel,