罗勇,孙冬野,秦大同,胡建军,曹友强.双状态无级变速传动系统起步控制优[J].农业机械学报,2010,41(3):1-5.
.of Start-up Strategies of Dual Mode CVT Powertrains[J].Transactions of the Chinese Society for Agricultural Machinery,2010,41(3):1-5.
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双状态无级变速传动系统起步控制优   [下载全文]
of Start-up Strategies of Dual Mode CVT Powertrains   [Download Pdf][in English]
  
DOI:10.3969/j.issn.1000-1298.[year].[issue].[sequence]
中文关键词:  车辆  液力变矩器  无级变速传动  起步控制  效率
基金项目:
罗勇  孙冬野  秦大同  胡建军  曹友强
重庆大学
中文摘要:传统的双状态无级变速车辆起步控制策略只考虑发动机与液力变矩器联合工作输出功率最大,而没有考虑金属带传动装置效率对起步性能的影响。为此,提出了综合考虑液力变矩器与金属带装置效率的最佳动力性起步控制策略,以驱动功率最大为目标设计算法,对起步过程金属带目标速比进行了优化计算。仿真及试验结果显示,在闭锁车速为30km/h、起步节气门开度为20%时,优化后的控制规律可以使闭锁时间提前约
Key Words:
Abstract:0.8s。 Conventionally, the start-up control strategy of dual mode CVT has focused on obtaining maximum output power of the combination of engine and torque converter; however, this strategy did not pay attention to the efficiency of the metal V-belt unit, which also influenced the start-up characteristics of the system. A start-up control strategy considering both TC and metal V-belt efficiency was proposed. An optimal algorithm was developed to calculate the target CVT ratio in order to obtain maximum driving power with consideration of both TC and metal V-belt efficiency. Simulation and experimental results indicated that, when lock-up speed was 30 km/h and start-up throttle opening was 20%, working time of the TC during the start-up process was reduced by about 0.8 s after the optimization.

Transactions of the Chinese Society for Agriculture Machinery (CSAM), in charged of China Association for Science and Technology (CAST), sponsored by CSAM and Chinese Academy of Agricultural Mechanization Science(CAAMS), started publication in 1957. It is the earliest interdisciplinary journal in Chinese which combines agricultural and engineering. It always closely grasps the development direction of agriculture engineering disciplines and the published papers represent the highest academic level of agriculture engineering in China. Currently, nearly 8,000 papers have been already published. There are around 3,000 papers contributed to the journal each year, but only around 600 of them will be accepted. Transactions of CSAM focuses on a wide range of agricultural machinery, irrigation, electronics, robotics, agro-products engineering, biological energy, agricultural structures and environment and more. Subjects in Transactions of the CSAM have been embodied by many internationally well-known index systems, such as: EI Compendex, CA, CSA, etc.

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