کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7004432 | 1454977 | 2015 | 9 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Investigation of manual transmission synchronizer failure mechanism induced by interface material/lubricant combinations
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
شیمی کلوئیدی و سطحی
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
To better understand the effects of interface material/lubricant combinations on the failure mechanism of a certain type of manual transmission synchronizer, a gear shift experiment was performed on the custom-built apparatus. After the experiment which ran for thousands of simulated shifts, the surfaces of friction material were analyzed by a non-contact surface profiler, and the Fe content contained in gear oil was measured by atomic emission spectrometry. The results show that with an increase of the number of shifts the surfaces became smoother, which in turn caused a decrease in the contact temperature and local asperity pressure. The increment of Fe content in the gear oil decreased gradually, which signified that a thick oil film had formed between the contact surfaces. Therefore, the oil film became very much stable. The contribution of solid/solid interactions on the friction coefficient continued to reduce as the liquid gradually dominated performance. Due to the low friction coefficient, quick synchronization became unavailable and when any gear shocks occurred, it meant that the synchronizer was not performing as intended.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Wear - Volumes 328â329, 15 April 2015, Pages 475-479
Journal: Wear - Volumes 328â329, 15 April 2015, Pages 475-479
نویسندگان
Xu Wanli, Zhao Wei, Su Bin, Xu Ximeng,