期刊
TRIBOLOGY INTERNATIONAL
卷 43, 期 1-2, 页码 113-128出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.triboint.2009.05.004
关键词
Adhesive wear; Cams and followers; Condition monitoring; Electrostatic charge; Carbon black
资金
- Engineering and Physical Sciences Research Council [EP/F034296/1] Funding Source: researchfish
- EPSRC [EP/F034296/1] Funding Source: UKRI
The increasing costs associated with lubricant development and qualification has driven the need for condition monitoring techniques to be deployed on test engines to maximise information gained from expensive testing programmes. This paper discusses the results from a motorised TU3 engine with electrostatic sensors focused on the cams. System characterisation tests and an oil starvation test were used to decouple charge mechanisms associated with a lubricated wear test, accelerated through the use of carbon black. Cross-correlation of various charge signal processing techniques, scanning electron microscopy and profilometry revealed that tribocharging dominated during running-in/mild wear and contact potential difference (CPD) dominated during the progression of severe adhesive wear. Tribocharging (the charge generated by a low conductivity fluid) has been shown to be affected by oil temperature, cam rotation speed and the presence of charged species within the lubricant. Contact potential differences was principally generated by the work function difference between oxidised and nascent regions associated with adhesive wear on the cam surface. Electrostatic monitoring which is sensitive to lubricant chemistry and wear, and can be implemented in an industry standard engine. has great potential for the lubricant industry. (C) 2009 Elsevier Ltd. All rights reserved.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据