Characteristics on Hydro-mechanical Transmission in Power Shift Process

查看全文 作　　者：HU Jibin WEI Chao YUAN Shihua JING [1]Chongbo

机构地区：[1]National Key Laboratory of Vehicular Transmission, Beijing Institute of Technology, Beijing 100081, China

出　　处：《Chinese Journal of Mechanical Engineering》索引2009年第22卷第1期,共7页

基　　金：supported by National Key Laboratory of Vehicular Transmission Foundation of China (Grant No. 9140C3402050702) 摘　　要：To improve the vehicular power and acceleration performance and reduce the shift impact, the study of the characteristics on power shift is necessary.Based on the flexible hydraulic unit of hydro-mechanical transmission, this paper explores the feasibility of shift without power interruption.With the four models concerning displacement ratio, rotational speed, rotational torque and power at ideal shift point, the characteristics on power shift in different running conditions are analyzed, and the rules of power shift are revealed.The theoretical analysis and test results show that the hydro-mechanical transmission can shift without power interruption in different running conditions.Furthermore, there exists an ideal shift point in theory, at which point the cycle power in hydro-mechanical transmission can't be generated, and the impact on the system can be reduced to the minimum.However, if before or after this ideal shift point, a cycle power can be generated. 关键词：液力机械变速器换挡过程液力机械传动循环发电厂特性电力供应运行条件转变点

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Characteristics on Hydro-mechanical Transmission in Power Shift Process

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