Crank angle resolved floating-liner friction measurements on microstructured cylinder liner surfaces
Crank angle resolved floating-liner friction measurements on microstructured cylinder liner surfaces
复制标题
微结构气缸套表面上的曲柄角解析浮动缸套摩擦测量
DOI：
10.1007/978-3-658-13255-2_72
复制
发表时间：
2016
期刊：
影响因子：
--
通讯作者：
F.Ulmer
中科院分区：
文献类型：
--
作者：
Pasligh;Oehlert;K.Dinkelacker;F.Ulmer
提高效率是内燃机现代概念发展的主要目标。除了热力学效率之外，机械效率对燃料消耗和废气排放也有相当大的贡献。活塞组由活塞、活塞环、润滑剂和缸套组成，根据发动机类型和工作点，活塞组的机械损失比例最高。活塞组的摩擦学，然而，取决于活塞冲程和工作循环在不同的边界条件。本文侧重于这方面，通过使用局部微结构气缸套表面。此外，本文还介绍了一种新研制的用于曲轴转角分辨活塞摩擦力测量的浮动缸套测量系统，该系统已应用于某重型研究发动机。实验结果表明，通过在衬垫的TDC和BDC中应用微结构，可以实现高达78%的摩擦力峰值的大幅降低。从单位面积的微观结构密度中发现了可实现的减少量的显著依赖性。
The improvement of efficiencies is a major objective in the development of modern concepts for internal combustion engines. The mechanical efficiency, besides the thermodynamic efficiency, contributes considerably to fuel consumption and exhaust emissions. The piston group, consisting of the piston, the piston rings, the lubricant and the cylinder liner has, depending on the engine type and operation point, the highest proportion of the mechanical losses. The tribology of the piston group, however, depends regarding the piston stroke and the working cycle on varying boundary conditions.This paper focuses on this aspect by using locally microstructured cylinder liner surfaces. Moreover, a new developed Floating-Liner Measurement System for crank angle resolved piston friction force measurements is presented, being applied to a heavy duty research engine. The experimental results show, that by applying microstructures in the TDC and BDC of the liner, a substantial reduction of friction force peaks by up to 78% can be achieved. A significant dependency of the achievable reduction has been found from the microstructure density per area.
电机驱动装置的更换和更换
DOI：
--
发表时间：
2009
期刊：
影响因子：
--
作者：
E. Karrar;S. Pischinger
通讯作者：
S. Pischinger