浅析奔驰9速自动变速器725.0的结构与动力传输流程

Structure and Power Transmission flow of Benz 9-Speed automatic Transmission 725.0

通过对自动变速箱技术的回顾和市场发展需求分析,奔驰公司为应对市场竞争推出了9速自动变速器。对奔驰公司新型9速自动变速器725.0组成的各分系统做出了介绍,着重说明了电液控制系统,升降档控制,供油系统及应急运行模式。并对其有特色的机构和部件进行了详细说明,将变矩器锁止离合器,电液控制驻车止动爪,变速箱油冷却系统,电动变速箱油泵,变速箱油作为主要特色部件,描述了相关部件的工作过程及设计目的。分析了该变速箱的动力传输流程,对1-9前进档和倒档的动力传输过程做了详细的说明,对其中几个特殊档位的传递过程做出了详细的分析和设计目的说明,对各档位传动比的计算提供了计算依据,为维修诊断提供了基础信息。总结了该变速箱的优缺点以及与同类变速箱的横向对比,提出了该变速箱所具有的竞争优势,并对未来多档位自动变速器的发展做出了一定的展望。

With a review of the automatic transmission technology and market development needs analysis,mercedes-benz to cope with the market competition launched 9 speed automatic transmission.For new Mercedes 725.0 9 speed automatic transmission of each subsystem has made the introduction,mainly illustrates the electro-hydraulic control system,lifting gear control,fuel supply system and emergency operation mode.Has distinguishing feature and the mechanism and components in detail,the torque converter lock up clutch,electro-hydraulic control in car locking claw,transmission oil cooling system,electric transmission oil pump,transmission oil as the main characteristic components,describes the work process of the relevant components and design purpose.Analyzes the transmission of power transmission process,1-9 of the forward and reverse power transmission process in detail,for some special gear transmission process has made the detailed analysis and design purposes,calculation basis was provided for the calculation of the gear transmission ratio,provide the basis for maintenance and diagnostic information.Summarizes the advantages and disadvantages of the gearbox,and compared with that of the same kind of gearbox and puts forward the transmission of the competitive advantage,and in the future to the multi-position automatic transmission development outlook.