摘要隨著汽車工業(yè)的發(fā)展，汽車已經(jīng)進入了百姓家庭，進入人們生活。所以變速器作為汽車主要的零件之一，我們必須對變速器作出進一步研究。發(fā)動機的輸出轉(zhuǎn)速非常高，最大功率及最大扭矩在一定的轉(zhuǎn)速區(qū)出現(xiàn)。為了發(fā)揮發(fā)動機的最佳性能，就必須有一套變速裝置，來協(xié)調(diào)發(fā)動機的轉(zhuǎn)速和車輪的實際行駛速度。在經(jīng)濟方面考慮合適的變速器也非常重要。本次設(shè)計對轎車變速器的結(jié)構(gòu)進行了介紹，闡述了轎車主要參數(shù)的確定，發(fā)動機參數(shù)的確定以及對功率大小直接影響到變速器中各個零件的強度進行介紹。在機構(gòu)方面的選擇了機械式變速器，確定變速器設(shè)計的主要參數(shù)，在變速器的壽命方面和以及與變速器相關(guān)的各種操縱機構(gòu)也進行了介紹。關(guān)鍵詞：變速器；扭矩；操縱機構(gòu)AbstractAlong with the automobile industry development, the automobile already enter the common people’s family, enter the people’s life. Therefore, the transmission gearbox took one of automobile main components, we must make further research for the transmission gearbox.The engine output rotational speed is extremely high, the maximum work rate and the maximum torque appears in certain rotational speed area. In order to display the engine the optimum performance, it must has a set of variable speed gear, coordinates the engine the rotational speed and the wheel actual moving velocity. In the economical aspect considered the appropriate transmission gearbox extremely is also important.This design has carried on the introduction to the passenger vehicle transmission gearbox structure, elaborated the passenger vehicle main parameter determination, the engine conditions determination as well as affects directly to the amount of power to the transmission gearbox in each components intensity carries on the introduction. In the organization aspect choice mechanical type transmission gearbox, the main parameter which the definite transmission gearbox designed, and as well as has also carried on the introduction in the transmission gearbox life aspect with the transmission gearbox correlation each kind of control mechanism. Thus lets us understand a transmission gearbox also better use.Key word: Transmission gearbox; Torque; Control mechanism