Verification of the Shifting Mechanism of Clutchless Geared Smart Transmission Using the Compact Car Size Test Bench

2013 IEEE Vehicle Power and Propulsion Conference (VPPC) Pub Date : 2013-11-21 DOI:10.1109/VPPC.2013.6671726

S. Kim, Sang Hun Lee, C. Song, Kyung-Soo Kim, Y. Yoon

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引用次数: 1

Abstract

The existing transmissions have limitations related to driving comfort, manufacturing price, or driveline efficiency. To satisfy the complex demands of users, the clutchless geared smart transmission (CGST) is proposed. The CGST has a distinctive structure combining the geared transmission and planetary gear system. Especially, its pseudo-clutch system including a planetary gear system and an electric motor acts as a clutch to change the gears smoothly. In this research, the shifting mechanism of the CGST was focused to verify their feasibility. To realize its sequential shifting steps including a speed control phase and a torque control phase of CGST operation, the compact car size test bench containing CGST as transmission was developed and tested. From the test, starting flywheel with 1st gear engaging by speed synchronization of carrier gear to output shaft was shown to be possible, and up shifting from 1st gear to 2nd gear was also performed with continuous power delivery to the flywheel. Based on the experimental result, the shifting mechanism was verified. In the future, we will quantify the shifting smoothness by using modified test bench.

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无离合齿轮智能变速器换挡机构的小型车尺寸试验台验证

现有的变速器在驾驶舒适性、制造价格或传动系统效率方面存在局限性。为满足用户的复杂需求，提出了无离合齿轮智能变速器(CGST)。CGST具有齿轮传动与行星齿轮系统相结合的独特结构。特别地，它的伪离合器系统包括行星齿轮系统和电动机作为离合器，以实现平稳换挡。在本研究中，重点研究了CGST的转移机制，以验证其可行性。为实现CGST在速度控制阶段和转矩控制阶段的连续换挡，研制了以CGST为变速器的小型车尺寸试验台并进行了试验。从测试中，通过载体齿轮到输出轴的速度同步启动飞轮的1档接合被证明是可能的，并且从1档到2档的转换也可以连续地向飞轮提供动力。在实验结果的基础上，对换挡机理进行了验证。在未来，我们将使用改进的试验台来量化换挡平稳性。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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2013 IEEE Vehicle Power and Propulsion Conference (VPPC)

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