This paper aims to numerically investigate the surface texturing effects on the main bearings of a three-cylinder ethanol engine in terms of the power loss and friction coefficient for dynamic load conditions.,The mathematical formulation considers the Partir-Cheng modified Reynolds equation. The mass-conserving Elrod-Adams p-θ model with the JFO approach is used to deal with cavitation. A fluid-structure coupling procedure is considered for the elastohydrodynamic lubrication. Accordingly, a 3-D linear-elastic substructured finite element model obtained from Abaqus is applied,Simulations were carried out considering different dimple texture designs in terms of location, depth and radius. The results suggested that there are regions where texturing is more effective. In addition, distinct journal rotation speeds are studied and the surface texture was able to reduce friction and the power loss by 7%.,The surface texturing can be a useful technique to reduce the power loss on the crankshaft bearing increasing the overall engine efficiency.,The surface texturing performance in a three-cylinder engine using ethanol as fuel was investigated through numerical experimentation. The results are supported by previous findings.,The peer review history for this article is available at: https://publons.com/publon/10.1108/ILT-09-2019-0380/

中文翻译：

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三缸乙醇发动机轴颈轴承的表面虚拟纹理

本文旨在数值研究三缸乙醇发动机主轴承在动态载荷条件下的功率损失和摩擦系数的表面织构效应。数学公式考虑了 Partir-Cheng 修正雷诺方程。采用 JFO 方法的质量守恒 Elrod-Adams p-θ 模型用于处理空化。流固耦合程序被考虑用于弹性流体动力润滑。因此，应用从 Abaqus 获得的 3-D 线弹性子结构有限元模型，在位置、深度和半径方面考虑不同的凹坑纹理设计进行了模拟。结果表明存在纹理化更有效的区域。此外，研究了不同的轴颈转速，表面纹理能够将摩擦和功率损失降低 7%。表面纹理可以成为减少曲轴轴承功率损失的有用技术，从而提高整体发动机效率。,表面通过数值实验研究了以乙醇为燃料的三缸发动机的织构性能。结果得到了先前发现的支持。本文的同行评审历史可从以下网址获得：https://publons.com/publon/10.1108/ILT-09-2019-0380/ 通过数值实验研究了以乙醇为燃料的三缸发动机的表面织构性能。结果得到了先前发现的支持。本文的同行评审历史可从以下网址获得：https://publons.com/publon/10.1108/ILT-09-2019-0380/ 通过数值实验研究了以乙醇为燃料的三缸发动机的表面织构性能。结果得到了先前发现的支持。本文的同行评审历史可从以下网址获得：https://publons.com/publon/10.1108/ILT-09-2019-0380/