本研究將奈米石墨烯添加到PGO SL 10W/40 原廠機油中，後續進行基礎性質及實車試驗。基礎性質實驗包括沉降試驗、磨潤試驗、黏度試驗、比熱試驗以及熱傳導試驗；實車試驗包含ECE-40、定速(50 km/h)、平路與爬坡試驗，同時觀察各測試項目數據，分別為引擎性能、廢氣排放、粒狀汙染物、實車溫度測試。在基礎性質試驗中，沉降試驗發現，在觀察沉澱現象的第30天之後，懸浮性最佳濃度為0.01 wt.%。磨潤試驗顯示，0.1 wt.%的磨潤效果最佳，其改善率為72.34 %。黏度試驗顯示，0.03 wt.%在高溫狀態下黏度平均下降了26.51 %。比熱試驗顯示，0.03 wt.%較原廠機油平均下降11.76 %。熱傳導試驗顯示，0.03 wt.%熱傳導係數平均提升10.43 %。最後，由綜合評比顯示，0.03 wt.%為最佳比例。實車試驗中， ECE-40與定速(50 km/h)之平均能源效率改善3.27 %，實車溫度表明，機油溫度的改善率能在5 %以內，高燃燒效率讓引擎室相關件構呈現高溫狀態。廢氣及粒狀污染物排放結果顯示，ECE–40 行車型態下奈米石墨烯機油之CO2的排放量大於原廠機油，小粒徑顆粒數比原廠機油還要多。在定速行車型態、平路以及爬坡行車型態下，結果顯示奈米石墨烯機油的CO2排放量與PM排放量都比原廠機油還要少。

In this research, nano graphene was added to the lubricant oil (PGO SL 10W / 40). Then, the basic properties and motorcycle application experiments were carried out. The experimental contents of basic properties included sedimentation, tribology, viscosity, specific heat and thermal conductivity tests. The experimental contents of motorcycle application included ECE-40, constant speed (50 km/h), flat road and climbing tests. Then, researcher observed the data from each experimental subjects of motorcycle application, including engine efficiency, exhaust emissions, particulate matter emissions, and the temperature of specific parts when the motorcycle was running. In the results of the basic properties experiments, the sedimentation test found that Nano Grephene Lubricant Oil was allowed to stand for 30 days, and the effect of 0.01 wt.% was very stable and had almost no precipitation. The tribology test found that 0.1 wt.% was the best, its tribology improvement rates was 72.34%. The results of the viscosity test showed that the viscosity of 0.03 wt.% at high temperature decreased by 26.51% on average. The specific heat test showed that the value of 0.03 wt.% was 11.76% lower than the original result on average. The thermal conductivity test showed that the thermal conductivity of 0.03 wt.% increased by 10.43% on average. According to the above experimental results, the Nano Grephene Lubricant Oil with 0.03 wt.% was selected to be the best concentration which had better comprehensive effects. In the motorcycle application experiments, under the condition of ECE-40 and constant speed (50 km/h) tests, the average energy efficiency is improved by 3.27%, and the motorcycle specific parts temperature is improved within 5%. The high combustion efficiency allowed the relative engine components to perform higher temperatures. Exhaust emissions and particulate matter emissions results showed that the CO2 emissions of Nano Grephene Lubricant Oil in the ECE-40 experiment was more than original lubricant oil, and the number of small particles was more than original one. During the conditions of constant speed, flat road and climbing tests, CO2 and PM emissions were all slightly lower than the original lubricant oil.

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