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为了控制气候变化,欧盟已经承诺,到2020年,CO2气体的排放量将比1990年减少30%。二氧化碳总排放量的20%来源于交通,其中道路交通占据了交通气体排放的84%以上。为了实现二氧化碳减排的目标,汽车行业不得不执行更严格的排放标准。汽车行业减排只有通过减轻车身重量和提高发动机和传动系统的效率方可实现。内燃机中接近50%的能量用来克服活塞环与气缸内壁之间的摩擦阻力,因此气缸内壁以及活塞环上均被涂上新型的低摩擦材料,以减少该部位带来的能量损失。论文中采用线性往复摩擦试验机表征气缸壁和活塞环间的摩擦行为,以便找出最佳的涂层组合。
In order to control climate change, the EU has promised that by 2020 CO2 emissions will be 30% less than in 1990. 20% of the total carbon dioxide emissions come from transportation, of which road traffic accounts for more than 84% of the traffic gas emissions. In order to achieve the goal of reducing carbon dioxide emissions, the automotive industry has to implement more stringent emission standards. Emissions reduction in the automotive sector can only be achieved by reducing body weight and increasing the efficiency of the engine and driveline. Nearly 50% of the energy in the internal combustion engine is used to overcome the frictional resistance between the piston ring and the cylinder wall so that a new type of low-friction material is applied to the cylinder wall and to the piston ring to reduce the energy loss from this part. In this paper, the linear reciprocating friction tester is used to characterize the friction between the cylinder wall and the piston ring in order to find out the best coating combination.