耐久试验对发动机扭振的影响研究

The research on the influence of the torsional vibration after the engine endurance test

发动机曲轴扭振是影响整车舒适性的一个重要方面。其中,扭转振动大小的影响因素有很多,发动机的缸数和冲程、发动机的负荷、缸内的燃烧,发动机零部件的形状和质量都会对扭振产生影响。情况表明,发动机经过耐久试验后使扭振角度幅值增大。经分析,曲轴皮带轮、张紧器,正时皮带和皮带轮V带是耐久后影响扭振角度的主要因素。

Engine crankshaft torsional vibration is an important aspect of the impact of vehicle comfort. Among them, the torsional vibration factors have a lot of size, number of cylinders of the engine and stroke, engine load, in-cylinder combustion engine components will affect the shape and quality of the torsional vibration. Circumstances indicate that the engine after the endurance test so torsional vibration level increases. After analysis, the crankshaft pulley, tensioner, timing belt, V-belt pulleys are the main factors affecting the torsional vibration of the engine durability.