通过齿数不同的齿轮组合就可以实现增速或减速。这就好比我们骑的山地车，就运用了这一原理，通过不同的齿轮组合达到变速和变矩的目的。
Through gear combination with different number of teeth, speed increase or deceleration can be achieved. This is just like the mountain bike we ride on. This principle is applied to achieve the purpose of speed and torque by different gear combinations.
济南自动变速箱维修是由液力变扭器、行星齿轮和液压操纵系统组成，通过液力传递和齿轮组合的方式来达到变速变矩。
The maintenance of Ji'nan automatic transmission is made up of hydraulic torque converter, planetary gear and hydraulic control system, which can achieve variable torque change by means of hydraulic transmission and gear combination.
手动变速箱主要由齿轮和轴组成，通过不同的齿轮组合产生变速变矩。换挡的原理其实很简单，齿轮转动时，齿数较小的A齿轮转速>B齿轮，则驱动力AB。
济南自动变速箱维修
Manual gearboxes are mainly composed of gears and shafts, generating variable speed torque through different gear combinations. The principle of shifting is actually very simple. When the gear is rotated, the smaller A gear speed > B gear, the driving force is A < B; the A gear speed of the larger number of teeth is less than B gear, and the driving force A > B.
改变传动比，以适应不同的行驶速度和行驶条件;发动机旋转方向不变情况下，使汽车能倒退行驶;
Changing the transmission ratio to adapt to different driving speed and driving conditions; and when the engine rotation direction is constant, the vehicle can go backward.
利用空挡，中断动力传递，且使发动机停留在怠速的状态。这样的好处是可以提高引擎的传动效率。换句话说，就是用更少的油跑更远的路。
The use of neutral gear interrupts power transmission and keeps the engine at idle speed. This advantage can improve the transmission efficiency of the engine. In other words, running farther away with less oil.
公司全方位服务于客户，以质量上乘、价格合理和完善的售后服务与客户携手奋进，共同发展。质量保证，欢迎咨询洽谈。
The company serves customers in an all-round way and works together with customers to develop together with quality, reasonable price and perfect after-sales service. Quality assurance, welcome to consult the negotiation.
