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包括轴承在内的曲轴设计分析,对新型发动机的总体设计及现有发动机的改型设计(提高输出功率等)是必须的。为改进曲轴及轴承的现有计算程序,AVL发展了新的方法。新方法能将扭转振动、弯曲振动及轴向振动(包括回转效应)结合起来分析。为了模拟多轴承作用,轴承模型同时考虑了液体油膜和轴承结构的刚性。受力振动的计算考虑了作用在轴承上的燃气压力及惯性力。计算结果与实测结果的比较证明了这一计算方法的精确性。该方法可广泛适用于客车、卡车发动机及大型中速柴油机。
Crankshaft design and analysis, including bearings, is necessary for the overall design of the new engine and the retrofit design of the existing engine (such as increasing the output power). AVL has developed new methods to improve the existing calculation procedures for crankshafts and bearings. The new method can analyze torsional vibrations, flexural vibrations and axial vibrations (including gyration effects). In order to simulate the role of multi-bearing, bearing model also considered the rigidity of the liquid film and bearing structure. The calculation of mechanical vibration takes into account the gas pressure and the inertial force acting on the bearing. The comparison between the calculated and measured results proves the accuracy of this method. The method can be widely applied to passenger cars, truck engines and large medium-speed diesel engines.