Study on The Strategy of Clamping Force Control Based on the Best Efficiency of Metal V Belt Type CVT in Vehicle
-
摘要: 影响汽车无级变速器传动效率的决定性因素是夹紧力控制。过小的夹紧力会导致金属带与带轮产生滑转,过度的滑动会使金属带与带轮接触面间磨损严重,同时有效转矩传递的可靠性也随之下降。过大的夹紧力不但会增加不必要的摩擦损失,而且会降低金属带及带轮使用寿命,所需较大的液压系统压力也会导致发动机消耗于油泵的能量增加。通过对滑转率的分析和研究可以合理确定夹紧力的数值使其大小适度并一直处于最佳夹紧状态,无级变速器的传动效率就可以得到效提高。Abstract: It is the clamping force control that determining the factor on the drive efficiency of CVT. Smaller clam-ping force would cause slip between belt and pulleys. When the slip level reach a certain degree, the surface of the metal belt and the pulleys would be worn seriously. and the engine output torque wouldn't be transmitted reliably. While the bigger clamping force would not only raise unnecessary friction losses,but also reduce the life of the met-al belt. Excessive hydraulic system pressure would directly lead to the increasing of energy consumption of the en-gine. The drive efficiency for CVT would be improved while the control system make the clamping force being the best condition and the target clamping force is made reasonably.
-
[1] 姚文俊. 汽车 CVT 液压控制系统综述[J]. 液压与气动, 2006, 10, 1-1 [2] Van der Meulen,S. et al. Experimental Investigation of Macro Slip in a Push belt CVT Variator,CVT, 2007 [3] 曹成龙, 周云山, 高帅等. 金属带式无级变速器夹紧力试验研 究[J]. 湖南大学学报(自然科学版), 2010, (7) [4] Bonsen B,Pulles R J, Simons S W H, et al. CVT slip control im-plementation in a vehicle[A]. IEEE Conference on Control Applications[C], 2005 [5] 张凤和, 张德珍, 程乃士等. 金属带式无级变速器(CVT)摩擦 系数的实验研究[J]. 机械设计与制造, 1999, (6) [6] Francis van der Sluis,Tom van Dongen,Gert-Jan van Spijk,et al. Efficiency Optiriaization of the Push belt CVT[R]. SAE International, 2007-01-1457 [7] Bonsen B,Klaassen T W G L,Van de Meerakker K G O,et al. Analysis of slip in a continuously variable transmission[A]. IMECE Congress and RD and D Expo[C], 2003 -
点击查看大图
计量
- 文章访问数: 150
- HTML全文浏览量: 20
- PDF下载量: 3
- 被引次数: 0
下载:
