三缸发动机一阶往复惯性力矩平衡率对曲轴扭振与表面振动的影响研究

张晋新; 高文志

doi:10.13433/j.cnki.1003-8728.20190304

三缸发动机一阶往复惯性力矩平衡率对曲轴扭振与表面振动的影响研究

doi: 10.13433/j.cnki.1003-8728.20190304

张晋新,
高文志^,

天津大学内燃机燃烧学国家重点实验室，天津　300072

详细信息

作者简介:
张晋新（1994−），硕士研究生，研究方向为内燃机振动，jinxinzhang@tju.edu.cn

通讯作者:
高文志，教授，博士生导师，gaowenzhi@tju.edu.cn

中图分类号: U464
计量
- 文章访问数: 233
- HTML全文浏览量: 25
- PDF下载量: 27
- 被引次数: 0
出版历程
- 收稿日期: 2019-08-10
- 网络出版日期: 2020-11-07
- 刊出日期: 2020-10-05

Influence of First Order Reciprocating Inertia Moment Balance Ratio on Torsional Vibration and Surface Vibration of Crankshaft forThree-cylinder Engine

Zhang Jinxin,
Gao Wenzhi^,

State Key Laboratory of Engines, Tianjin University, Tianjin 300072, China

摘要

摘要: 为了研究三缸汽油机采用单平衡轴时一阶往复惯性力矩平衡率对曲轴扭振和发动机表面振动的影响，采用多体动力学软件AVL-EXCITE-Power Unit建立发动机多体动力学模型。开展30% ~ 100%一阶往复惯性力矩平衡率下曲轴扭振和发动机表面振动仿真研究。结果表明：采用单轴平衡法通过选择合适的平衡率会降低发动机的表面振动，但同时也会在某种程度上增大曲轴的扭振。因此，在采用单平衡轴进行三缸机减振时也要考虑其对扭振的影响。
- 三缸汽油机 /
- 一阶往复惯性力矩 /
- 平衡率 /
- 扭振 /
- 振动
Abstract: In order to investigate the influence of different first-order reciprocating inertia moment balance ratio on crankshaft torsional vibration and engine surface vibration when three-cylinder gasoline engine adopts single balance shaft, the AVL-EXCITE-Power Unit, which is a kind of multi-body dynamics software is used to establish the engine dynamics model. The torsional vibration of crankshaft and the surface vibration of engine under the balance ratio of 30% to 100% reciprocating moment of inertia are simulated. The results show that the surface vibration of the engine can be reduced by using the method of single balance shaft, but the torsional vibration of the crankshaft can also be increased to some extent. Therefore, the influence of single balance shaft on torsional vibration should also be considered when the vibration reduction of three-cylinder machine is carried out.
- three-cylinder gasoline engine /
- first-order reciprocating inertia moment /
- balance ratio /
- crankshaft torsional vibration /
- surface vibration

HTML全文

图 1 曲轴旋转惯性力和离心惯性力矩示意图

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图 2 曲轴平衡块旋转惯性力与力矩示意图

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图 3 平衡轴平衡重分布示意图

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图 4 发动机整体模型

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图 5 曲轴轴系模型

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图 6 曲轴各阶次扭振角实验与仿真对比

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图 7 1 000 r/min满载工况下缸压曲线

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图 8 1 000 r/min满载工况曲轴扭振瀑布图

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图 9 曲轴扭振角的综合幅值（不含1.5阶）

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图 10 曲轴扭振幅值（1.0阶、3.0阶、4.5阶、6.0阶）

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图 11 发动机表面节点的振动烈度

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图 12 气缸盖、缸体、油底壳X、Y、Z方向的振动烈度

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