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首页> 外文会议>SAE International Fuels and Lubricants Meeting and Exposition >Toward improved fuel economy in passenger car motor oils: An investigation into the influence of detergent system and friction modifier as measured by the EPA federal test procedure and highway fuel economy test cycles
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Toward improved fuel economy in passenger car motor oils: An investigation into the influence of detergent system and friction modifier as measured by the EPA federal test procedure and highway fuel economy test cycles

机译：走向乘用车机油的燃油经济性：通过EPA联邦试验程序和公路燃料经济性试验循环测量的洗涤剂系统和摩擦改进器的影响

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The International Lubricant Standardization and Approval Committee (ILSAC) GF-2 specification requires Passenger Car Motor Oils to provide enhanced fuel economy in a modern low friction engine (ASTM Sequence VIA). The durability of this fuel economy improvement is becoming increasingly important and will be addressed in the successor to the Sequence VIA, the Sequence VIB, which proposed for ILSAC GF-3. Previous investigations have indicated that the choice of detergent system and friction modifier have a large impact on the fuel economy of a lubricant, and this study was designed to analyze these effects further. The work was carried out in three phases. In the first phase, seven detergent systems wee evaluated and compared to currently available GF-2 lubricant in a vehicle equipped with a 4.6L SOHC V8 engine using a 500-mile accelerated mileage accumulation (AMA) cycle. Fuel economy improvement was calculated against the ASTM Sequence VIA Baseline Calibration oil (BC-2) as a reference. In the second phase, a single detergent system was treated with four friction modifiers in a 4000-mile AMA accumulation with interim fuel economy testing at 500 miles to determine both initial fuel economy and durability of the systems. The final phase coupled the best detergent system/friction modifier and test across five vehicle makes of differing engine displacement and valve train configuration to determine the general utility of the oil. In all three phases, fuel economy was measured using the EPA Federal Test Procedure and Highway Fuel Economy Test Cycles. The results of this investigation, including drain analyses, are discussed; and a comparison is presented of the three methods used in monitoring the fuel consumption: carbon balance, fuel flow metering, and gravimetric measurement.
机译：国际润滑油标准化和批准委员会（ILSAC）GF-2规范需要乘用车机油在现代低摩擦发动机（ASTM序列通过）中提供增强的燃油经济性。这种燃料经济性改善的耐久性变得越来越重要，并且将在继任者中通过序列VIB在序列VIB中寻址，这提出了ILSAC GF-3。以前的调查表明，洗涤剂系统和摩擦改性剂的选择对润滑剂的燃料经济性产生了很大影响，并且该研究旨在进一步分析这些效果。这项工作是三个阶段进行的。在第一阶段，七种洗涤剂系统，与当前可用的GF-2润滑剂在配备有500英里加速的里程累积（AMA）循环的车辆中的目前可用的GF-2润滑剂进行评估。通过基线校准油（BC-2）作为参考，根据ASTM序列计算燃料经济性改善。在第二阶段，在4000英里的AMA积聚中用四个摩擦改性剂处理单个洗涤剂系统，在500英里处，临时燃料经济性测试，以确定初始燃料经济性和系统的耐久性。最后相结合了最佳的洗涤剂系统/摩擦改性剂，并在五种车辆中进行测试，使得不同发动机位移和阀门列车配置来确定油的一般效用。在所有三个阶段，使用EPA联邦测试程序和公路燃料经济性试验循环测量燃料经济性。讨论了这项调查的结果，包括排水分析;并提出了用于监测燃料消耗的三种方法的比较：碳平衡，燃料流量计量和重量测量。

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