离合器参数对HMCVT换段品质的影响规律研究

陆凯; 鲁植雄; 程准; 郑诗强

doi:10.13433/j.cnki.1003-8728.20190027

离合器参数对HMCVT换段品质的影响规律研究

doi: 10.13433/j.cnki.1003-8728.20190027

南京农业大学工学院, 南京 210031

基金项目:

江苏省研究生科研创新计划项目 KYCX17_0647

国家重点研发专项项目 2016YFD0701103

详细信息

作者简介:
陆凯(1992-), 硕士研究生, 研究方向为汽车电子控制技术, lk18305187687@126.com

通讯作者:
鲁植雄, 教授, 博士生导师, 博士, luzx@njau.edu.cn

中图分类号: S219.032.1;S229⁺.1
计量
- 文章访问数: 316
- HTML全文浏览量: 181
- PDF下载量: 16
- 被引次数: 0
出版历程
- 收稿日期: 2018-11-18
- 刊出日期: 2019-11-05

Study on Influence Rules of Clutch Parameters on HMCVT Shift Performance

College of Engineering, Nanjing Agricultural University, Nanjing 210031, China

摘要

摘要: 为了提高HMCVT的换段品质，通过仿真与试验相接合的方法对离合器充油流量和压强与换段品质之间的关系进行了研究。分析了滑摩阶段离合器从动端转速和离合器传递转矩的变化规律，同时使用SimulationX建立了变速器模型，并在一定条件下对该模型进行了试验验证。基于模型研究了离合器充油流量与压强对换段品质的影响，阐述了其影响规律。建立了换段品质总评价函数，基于AHP确定了函数中各评价指标权重值，并得出了换段品质最优时的充油流量与压强组合。在试验条件范围内：增大离合器的充油流量可以减小速度降、最大滑摩功率、滑摩功；增大充油流量对动载荷系数没有影响，增大充油压强会使动载荷系数增大。在充油流量和压强组合为6 L/min，5 MPa时，可以获得最佳的换段品质。
- 离合器 /
- HMCVT /
- SimulationX /
- 换段品质 /
- 评价指标 /
Abstract: In order to improve the shift performance of the Hydraulic Mechanical Continuously Variable Transmission (HMCVT), the relationship between clutch oil filling flow, pressure and shift performance was studied by the simulation and experiment in this paper. The variation law of clutch driven-end speed and clutch transmission torque in sliding phase was analyzed. At the same time, the transmission model was established with SimulationX, and the model was tested and verified under specific conditions. The influence of clutch oil filling flow rate and oil filling pressure on the quality of shift performance was simulated and analyzed with the model. Objective function of the shift performance was established, and the weight value of each evaluation index in the function was determined by the AHP. According to simulation test results:increasing the oil filling flow and pressure of the clutch can reduce the speed changing, maximum sliding friction power and sliding friction work, and improve the quality of shift performance. However, increasing the clutch oil filling flow has no effect on the dynamic load factor, and increasing the oil filling pressure will increase the dynamic load factor. The best shift performance can be obtained when the clutch oil filling flow and pressure combination is 6 L/min and 5 MPa, respectively.
- clutch /
- HMCVT /
- SimulationX /
- shift performance /
- evaluation index /
- simulation and experiment

HTML全文

图 1 南京农业大学原理方案图

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图 2 离合器油压曲线

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图 3 变速器仿真模型

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图 4 离合器充油流量对换段品质的影响规律

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图 5 离合器充油压强对换段品质的影响规律

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图 6 流量与压强对换段品质规律的影响

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图 7 不同流量和压强下的换段品质函数值

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表 1 试验结果对比

序号	流量/(L·min^-1)	压强/MPa	负载/(N·m)	输出轴转速/(r·min^-1)	速度降/(r·min^-1)		峰值扭矩/(N·m)		相对误差绝对值/%		平均相对误差绝对值/%
序号	流量/(L·min^-1)	压强/MPa	负载/(N·m)	输出轴转速/(r·min^-1)	试验	仿真	试验	仿真	速度降	峰值扭矩	速度降	峰值扭矩
1	3	3	150	435.4	366.35	368.57	200.65	210.45	0.61	4.88	-	-
2	3	4	150	435.4	322.54	313.74	211.32	223.36	2.73	5.70	3.0	4.25
3	3	5	150	435.4	233.83	220.62	230.44	225.43	5.65	2.17	-	-

下载: 导出CSV

表 2 各指标权重值

评价指标	w₁	w₂	w₃	w₄
权重值	0.365 2	0.283 0	0.156 4	0.164 9

下载: 导出CSV

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