【摘要】 无级自动变速传动作为理想的传动方式 ,能有效地提高车辆的动力性和燃油经济性 ,减少排放污染 ,用液力变矩器作为无级自动变速传动系统的起步装置具有良好的起步性能 ,且控制简单。在液力变矩器性能试验及锁止离合器闭锁动态过程仿真的基础上 ,根据发动机与液力变矩器的共同工作特性进行了发动机与液力变矩器的匹配评价 ,提出了液力变矩器闭锁控制规律以及用液力变矩器作起步装置的机械无级变速传动系统的起步控制策略。经汽车起步、加速过程的仿真结果表明 ,与装备五档手动变速器的汽车相比 ,装备机械无级变速器的汽车具有良好的起步和加速性能更多还原

【Abstract】 Continuously Variable Transmission which is the ideal transmission for automobile can improve dynamical and economical performance and reduce pollution emission effectively. Vehicle equipped with CVT where hydraulic torque converter is acted as start clutch have better acceleration performance and its starting control is very simple. Based on performance test of hydraulic torque converter and simulation on lock-up dynamic process of torque converter clutch, matching characteristic between engine and torque converter is evaluated , and the lock-up control rule of torque converter clutch and the control strategy of standing start of vehicle equipped with Continuously Variable Transmission with torque converter is proposed. By computer simulation on start process, vehicle equipped with CVT have better acceleration performance than equipped with five-speed MT.更多还原