关键词: 闭锁, 动态性能, 液力变矩减速器

Abstract: In order to research assuasive control and dynamic characteristic of new tractor-brake hydraulic torque converter & retarder in the lock-up process, provide credibility design for vehicles, taking a power-hydrodynamic transmission system as a spring-mass system, dynamic model and mathematical model are established for the vehicle power train system equipped with the new tractor-brake hydraulic torque converter on the base of the simulink of MATLAB, bring about its lock-up control rule in the lock-up process. The simulated results of dynamic characteristic for the power train system are carried out in the process of lock-up. Its dynamic change of import and output rotate speed and torque are gained in the process of lock-up, and still have the friction torque dynamic change of lockup clutch. Factors affecting the quality of lock-up are analyzed. A test is made for validating theory research.

Key words: Lock-up, Dynamic characteristic, Hydraulic torque converter & retarder