关键词: 试验台, 无级变速传动, 性能, 燃油经济性 巡航策略 最优控制 伪谱法

Abstract: The performance of continuously variable trans-mission (CVT) and its effect factors are investigated by experimental method. An experimental device of the CVT is designed and manufactured, an electro-hydraulic control system is built, and a performance test bench of the CVT is established. The performance experiment of the CVT is carried out. The experiment results show that transmission ratio, input torque, and oil pressure in pulley cylinder have great influence on the performance of the CVT, and the efficiency of the CVT is related to transmitted torque, oil pressure in pulley cylinder, transmission ratio and input rotary speed .

Key words: Continuously variable transmission, Performance, Test bench, Fuel economy, Cruising strategy, Optimal control, Pseudo-spectral method