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以某功率分流混合动力轿车传动系为研究对象,分析了该款深度混合动力汽车的转速特性,通过噪声测试确定了混合动力传动系在纯电动和混合动力模式下的噪声源,建立了传动系复合行星排齿轮啮合对三维接触动态有限元模型,分析了齿轮对三维接触动态特性。噪声测试结果表明,复合行星排齿轮啮合是纯电动模式下主要噪声源,齿圈与减速器齿轮啮合噪声及发动机噪声是混合动力模式下主要噪声;动态接触分析得到了齿轮对啮合时轮齿的接触状态、接触应力、接触力、接触面积等随啮合位置变化的规律,为混合动力传动系振动噪声、强度校核和动态性能优化提供了依据。
Taking a power split hybrid car powertrain as the research object, the rotational speed characteristics of the hybrid car are analyzed. The noise sources of the hybrid powertrain in pure electric and hybrid modes are determined by noise test, and the transmission system The dynamic finite element model of three-dimensional contact meshing of compound planetary gears is analyzed, and the dynamic characteristics of gear pair three-dimensional contact are analyzed. The results of noise test show that the compound planetary gearset is the main noise source in pure electric mode, the gear noise of gear ring and reducer and engine noise are the main noise in hybrid mode. The dynamic contact analysis shows that the meshing gear teeth Contact state, contact stress, contact force, contact area and other changes with the meshing position of the law for the hybrid powertrain vibration noise, strength check and dynamic performance optimization provides the basis.