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首页> 外文会议>ASME(American Society of Mechanical Engineers)//IEEE（Institute of Electrical and Electronics Engineers）Joint Rail Conference; ASME(American Society of Mechanical Engineers) Internal Combustion Engine Division Spring Technical Conference; 20070313-16; 2 >FRICTION REDUCTION DUE TO LUBRICATION OIL CHANGES IN A LEAN-BURN 4-STROKE NATURAL GAS ENGINE: EXPERIMENTAL RESULTS
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FRICTION REDUCTION DUE TO LUBRICATION OIL CHANGES IN A LEAN-BURN 4-STROKE NATURAL GAS ENGINE: EXPERIMENTAL RESULTS

机译：稀燃四冲程天然气发动机润滑油变化引起的摩擦降低：实验结果

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A project to reduce frictional losses from natural gas engines is currently being carried out by a collaborative team from Waukesha Engine Dresser, Massachusetts Institute of Technology (MIT), Colorado State University (CSV), and ExxonMobil. This project is part of the Advanced Reciprocating Engine System (ARES) program led by the US Department of Energy. Changes in lubrication oil have been identified as a way to potentially help meet the ARES goal of developing a natural gas engine with 50% brake thermal efficiency. Previous papers have discussed the computational tools used to evaluate piston-ring/cylinder friction and described the effects of changing various lubrication oil parameters on engine friction. These computational tools were used to predict the effects of changing lubrication oil of a Waukesha VGF 18-liter engine, and this paper presents the experimental results obtained on the engine test bed. Measured reductions in friction mean effective pressure (FMEP) were observed with lower viscosity lubrication oils. Test oil LEF-H (20W) resulted in a ～ 1.9% improvement in mechanical efficiency (η_(mech)) and a -16.5% reduction in FMEP vs. a commercial reference 40W oil. This improvement is a significant step in reaching the ARES goals.
机译：Waukesha Engine Dresser，麻省理工学院（MIT），科罗拉多州立大学（CSV）和埃克森美孚（ExxonMobil）的合作团队目前正在执行一个减少天然气发动机摩擦损失的项目。该项目是美国能源部牵头的先进往复式发动机系统（ARES）计划的一部分。已经确定了润滑油的变化，可以潜在地帮助实现ARES目标，即开发制动热效率为50％的天然气发动机。先前的论文讨论了用于评估活塞环/气缸摩擦的计算工具，并描述了改变各种润滑油参数对发动机摩擦的影响。这些计算工具被用于预测Waukesha VGF 18升发动机的润滑油变化的影响，本文介绍了在发动机试验台上获得的实验结果。使用较低粘度的润滑油可观察到摩擦平均有效压力（FMEP）的降低。与商业参考40W油相比，LEF-H（20W）试验油的机械效率（η_（mech））提高了1.9％，FMEP降低了-16.5％。这项改进是实现ARES目标的重要一步。

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