کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7002541 | 1454805 | 2016 | 32 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
The effect of laser machined pockets on the lubrication of piston ring prototypes
ترجمه فارسی عنوان
اثر جیب های لیزری ماشین بر روانکاری نمونه های حلقه پیستون
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کلمات کلیدی
حلقه پیستون، بافت لیزری، اصطکاک، روانکاری کاویتاسیون،
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
شیمی کلوئیدی و سطحی
چکیده انگلیسی
Surface texturing has emerged as a promising method to reduce friction loss at the piston ring/cylinder liner contact. The objective of this study is to investigate the potential for a new design of lasered oil pockets to improve the lubrication of piston rings. These pockets are fabricated at the inlet and outlet of a piston ring and can work as tiny step bearings to generate hydrodynamic lift. A series of bench tests are conducted to investigate the frictional performance of flat piston ring prototype (PRP) with various pockets. The results show that the pocket area ratio (AR) and depth have a major influence on the tribological behavior and significant friction reduction can be achieved by using pockets with appropriate geometric parameters (AR=25%, depth=5 μm). In addition, a preliminary theoretical model that implements the mass-conservative cavitation algorithm was used to analyze the influence of pocket geometric parameters on the PRP lubrication. The simulation results showed good agreement with the trends observed in the experiments.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Tribology International - Volume 101, September 2016, Pages 273-283
Journal: Tribology International - Volume 101, September 2016, Pages 273-283
نویسندگان
Cong Shen, M.M. Khonsari,