论文部分内容阅读
本文采用发动机缸套-活塞环摩擦摩损试验方法,研究了不同燃油(生物油和0号车用柴油)在缸套-活塞环往复运动条件下的摩擦磨损特性,结合电子显微镜及红外分析手段,对生物油的摩擦磨损机理进行了探讨。试验结果表明,缸套-活塞环摩擦副的润滑状态受往复运动摩擦速度影响较大。当摩擦速度1.2m/s,载荷280N时,在生物油润滑条件下,稳定磨损阶段的平均摩擦系数为0.04,磨损量为122.5mg;而在0号车用柴油润滑条件下,平均摩擦系数为0.072,磨损量为14mg。生物油较0号车用柴油的减摩性好,但耐磨性较差。其主要原因可能是生物油中的酸性物质导致了腐蚀磨损,而其中的酯类化合物促进了减摩作用。
In this paper, the friction and wear test of cylinder liner-piston ring was carried out to study the friction and wear characteristics of different fuel (bio-oil and No. 0 diesel) on the reciprocating motion of cylinder liner-piston ring. Combined with the electron microscope and infrared analysis , The friction and wear mechanism of bio-oil were discussed. The experimental results show that the lubrication condition of cylinder liner - piston ring friction pair is greatly influenced by the reciprocating friction speed. When the friction speed is 1.2m / s and the load is 280N, the average coefficient of friction in the stable wear stage is 0.04 and the wear amount is 122.5mg under the condition of bio-oil lubrication. However, under the condition of No. 0 vehicle diesel oil lubrication, the average friction coefficient is 0.072, the amount of wear is 14mg. Bio-oil than No. 0 car diesel anti-friction good, but poor wear resistance. The main reason may be that the acidic substances in bio-oil lead to corrosion and wear, and the ester compounds promote the anti-friction effect.