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Advanced Test Methods Aid in Formulating Engine Oils for Fuel Economy

机译：先进的测试方法辅助制定燃油经济性的发动机油

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Chassis dynamometer tests are often used to determine vehicle fuel economy (FE). Since the entire vehicle is used, these methods are generally accepted to be more representative of ‘real-world’ conditions than engine dynamometer tests or small-scale bench tests. Unfortunately, evaluating vehicle fuel economy via this means introduces significant variability that can readily be mitigated with engine dynamometer and bench tests. Recently, improvements to controls and procedures have led to drastically improved test precision in chassis dynamometer testing. Described herein are chassis dynamometer results from five fully formulated engine oils (utilizing improved testing protocols on the Federal Test Procedure (FTP-75) and Highway Fuel Economy Test (HwFET) cycles) which not only show statistically significant FE changes across viscosity grades but also meaningful FE differentiation within a viscosity grade where additive systems have been modified. Demonstration of statistically significant differentiation of fuel economy within a viscosity grade is a result of both robust additive technology and high test precision. Furthermore, the work demonstrates that with the specific vehicle and test cycle used, it is possible to obtain the fuel economy performance level of a 0W-16 with a 5W-30 containing a proprietary organic friction modifier (FM).
机译：底盘测功机测试通常用于确定车辆燃料经济性（FE）。由于使用整个车辆，通常接受这些方法比发动机测力计测试或小规模的台阶测试更具代表性的“真实世界”的条件。不幸的是，通过该装置评估车辆燃料经济性引入显着的变化，可以随着发动机测功机和台式测试容易地减轻。最近，对控制和程序的改进导致底盘测力计测试中的测试精度急剧提高。本文描述的底盘测功机是来自五种完全配制的发动机油的底盘测力计（利用联邦测试程序（FTP-75）和公路燃料经济性试验（HWFET）循环的改进的测试方案），这不仅在粘度等级上显示出统计学上有意义的FE变化在粘度等级内有意义的Fe差异化，其中添加系统已经改变。在粘度等级内燃料经济性统计学显着分化的示范是鲁棒性添加剂技术和高测试精度的结果。此外，该工作表明，利用所用的特定车辆和测试循环，可以获得0W-16的燃料经济性能水平，其中5W-30包含专有的有机摩擦改性剂（FM）。

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