期刊
JOURNAL OF TRIBOLOGY-TRANSACTIONS OF THE ASME
卷 138, 期 2, 页码 -出版社
ASME
DOI: 10.1115/1.4031780
关键词
internal combustion engine; surface texture; piston ring; friction; lubrication
资金
- Engineering and Physical Sciences Research Council (EPSRC)
- EPSRC [EP/G012334/1] Funding Source: UKRI
- Engineering and Physical Sciences Research Council [EP/G012334/1] Funding Source: researchfish
Minimization of parasitic losses in the internal combustion (IC) engine is essential for improved fuel efficiency and reduced emissions. Surface texturing has emerged as a method palliating these losses in instances where thin lubricant films lead to mixed or boundary regimes of lubrication. Such thin films are prevalent in contact of compression ring to cylinder liner at piston motion reversals because of momentary cessation of entraining motion. The paper provides combined solution of Reynolds equation, boundary interactions, and a gas flow model to predict the tribological conditions, particularly at piston reversals. This model is then validated against measurements using a floating liner for determination of in situ friction of an engine under motored condition. Very good agreement is obtained. The validated model is then used to ascertain the effect of surface texturing of the liner surface during reversals. Therefore, the paper is a combined study of numerical predictions and the effect of surface texturing. The predictions show that some marginal gains in engine performance can be expected with laser textured chevron features of shallow depth under certain operating conditions.
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