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    变速器在汽车行业的使用特点
    2021-10-19 14:52:14

    变速器功用:a) 改变传动比,来扩大驱动轮的转矩和转速的变化范围,以适应经常变化的行驶条件,如起步、加速、上坡,同时使发动机保持在有利的工况下工作(功率较高而油耗率较低)b) 使汽车能够倒退行驶c) 能够用空挡切断发动机的动力传递,使发动机能够启动、怠速,并且便于变速器换挡或进行动力输出。双离合变速器(DCT、大众叫DSG)与离合器配合工作原理:通过两个独立的离合器交互工作,分别控制两根输入轴,一根轴控制1、3、5档,另一跟轴控制2、4、6档,能够在不切断动力的情况下换挡。优点: 提高了换档时的平顺性;缩短了换挡时间;提高了燃油经济性。缺点:离合器容易过热。

    Function of transmission: a) change the transmission ratio to expand the variation range of torque and speed of driving wheels to adapt to frequently changing driving conditions, such as starting, accelerating and uphill, while keeping the engine working under favorable working conditions (high power and low fuel consumption rate) b) enable the vehicle to travel backwards C) cut off the power transmission of the engine with neutral gear, Enable the engine to start, idle, and facilitate transmission shift or power take-off. Working principle of dual clutch transmission (DCT, Volkswagen called DSG) and clutch: through the interaction of two independent clutches, two input shafts are controlled respectively. One shaft controls gears 1, 3 and 5, and the other heel shaft controls gears 2, 4 and 6, which can shift without cutting off the power. Advantages: the smoothness of gear shifting is improved; The shift time is shortened; Improved fuel economy. Disadvantages: the clutch is easy to overheat.

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    工作原理自动变速器(AT)与液力变矩器配合工作原理:通过ECU来控制变速箱内的离合器,在设定的转速来更换到相应的挡位。优点:提高了汽车行驶的安全性和操纵性缺点:结构复杂,维修成本高;在传递扭矩时会由一部分动力的损失,油耗较高。

    Working principle automatic transmission (at) works with hydraulic torque converter: the clutch in the transmission box is controlled by ECU and changed to the corresponding gear at the set speed. Advantages: it improves the safety and maneuverability of the vehicle. Disadvantages: complex structure and high maintenance cost; When transmitting torque, some power will be lost, and the fuel consumption is high.

    手动变速器(MT)与离合器配合优点:结构简单,传动效率高;保养成本最低缺点:操作较为麻烦;操作熟练之后才能找到最佳换挡转速(性能好或油耗低)无级变速器(CVT)与液力变矩器配合不同于传统变速器,它是通过金属带传动,因此能够连续的调节实现无极变速传动。优点:动力传递连续,换挡无顿挫感;挡位设定更灵活,所以较传统变速箱来说更容易达到油耗和性能的平横,较为省油。缺点:因为是通过钢带调速,所以能够传递的扭矩相对于传统变速箱来说要小。

    Advantages of matching manual transmission (MT) with clutch: simple structure and high transmission efficiency; Disadvantages of the lowest maintenance cost: troublesome operation; The best shift speed (good performance or low fuel consumption) can be found only after skilled operation. The cooperation between continuously variable transmission (CVT) and hydraulic torque converter is different from traditional transmission. It is driven by metal belt, so it can continuously adjust to realize stepless variable speed transmission. Advantages: continuous power transmission, no frustration when shifting; The gear setting is more flexible, so it is easier to achieve the horizontal of fuel consumption and performance than the traditional gearbox, and it is more fuel-efficient. Disadvantages: because the speed is regulated by steel belt, the torque that can be transmitted is smaller than that of traditional gearbox.

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