重庆大学学报2017，Vol.40Issue(1)：20-29,10.DOI:10.11835/j.issn.1000-582X.2017.01.003
CVT刚性联接发动机曲轴轴系结构的扭振分析
Torsional vibration analysis of the crankshaft with rigidly coupling CVT
摘要
Abstract
Due to the limitation of non-road vehicles’structure and cost,a structure of four-cylinder diesel engine crankshaft with rigidly coupling CVT was proposed.Characteristics and working principles of the new structure were presented.Calculation models were established separately for rotational vibration analysis of the newly proposed structure and the crankshaft with clutch.By carrying out the crankshaft front-end experiment,the presented model and the calculation method were validated.After solving both models for torsional vibration characteristics and parameters,results were compared.The comparison indicates that crankshaft with rigidly coupling CVT make the vibration fluctuation and the crankshaft dissipation power increase while the corresponding speed of resonance peak value decreases.The impacts on crank shear stress turn out to be small,while the shear stress tends to decrease at low speed condition and increase at high speed condition.Also,the torsional vibration amplitudes and shear stress at the end of CVT are larger.Through the comprehensive comparison,it can be concluded that the crankshaft with rigidly coupling CVT can be adopted on non-road low-speed four-cylinder diesel engine.关键词
CVT 刚性联接/曲轴轴系/扭振测试/扭转振动Key words
crankshaft with rigidly coupling CVT/crankshaft/torsion testing/torsional vibration分类
能源科技引用本文复制引用
张青,罗求顺,张力,邱胜,陈朝辉..CVT刚性联接发动机曲轴轴系结构的扭振分析[J].重庆大学学报,2017,40(1):20-29,10.基金项目
重庆市科技攻关计划重点资助项目（CSTC2008AC6024）。Supported by the Foundation for Science Technology Research Project of Chongqing（CSTC2008AC6024）． （）
