Brief analysis of torsional vibration of vehicle engine

摘要

This article has established the machine shop truck with the engine shafting torsional vibration model, analyzed the engine rotation inertia and the torsional rigidity, established the engine crank torsional vibration equation, analyzed the machine shop truck to have the torsional vibration reason with the engine, proposed the engine torsional vibration reduced the method, has certain reference value to the engine design and the use. With the engineering vehicle engine power continuously improve and body weight, matching pattern is also increasing, resulting in severe torsional vibration or the corresponding noise becomes one of the important causes of engine failure, severe torsional vibration of crankshaft fracture will fall is, drive gear tooth surface or tooth fracture.