变速箱对汽车动力影响的直接点就是变速箱传动比对动力的影响，那么变速箱在发动机动力传递过程中所起到的作用是如何的呢？下面就来了解下相关内容吧。

　　The direct point of gearbox's influence on vehicle power is the influence of gearbox's transmission ratio on power, so what is the role of gearbox in the process of engine power transmission? Let's get to know the relevant content.

　　汽车速度的影响因素在于单位时间内发动机的输出功率。这是一个笼统的说法，但如果要更详细一点，就是单位时间内发动机动力传递给车轮的车轮扭矩值。在变速箱的整个动力传递过程中，发动机的动力在变速箱和尾齿轮的主从传动比减速的情况下，会大大降低传递给车轮的发动机转速，因此传递给车轮的扭矩将大于发动机工作时的输出的扭矩。

　　The speed of a car depends on the output power of the engine per unit time. This is a general statement, but if you want to be more specific, it is the value of wheel torque transferred from engine power to the wheels per unit time. In the whole process of transmission power transmission, the engine power in the case of gearbox and tail gear master-slave ratio deceleration, will greatly reduce the engine speed transmitted to the wheel, so the torque transmitted to the wheel will be greater than the output torque of the engine when working.

　　与手动变速箱、双离合变速箱、AT变速箱一样，它们工作的核心是齿轮啮合，即从动齿轮与从动齿轮的比扭矩原理。很多人也喜欢用山地车的传动原理来解释这个原理，变速箱的原理真的大致是这样的。

　　Like manual gearbox, dual clutch gearbox and AT gearbox, the core of their work is gear engagement, that is, the principle of specific torque between driven gear and driven gear. Many people also like to use mountain bike transmission principle to explain this principle, the principle of gearbox is really roughly like this.

　　在低速时，变速器用直径较小的主动齿轮带动直径较大的从动齿轮转动。这种“小带大带”的齿轮转动结构，会使直径较小的主动齿轮承受较大的啮合阻力和转动阻力。此时，小直径主齿轮旋转数周后，大直径从动齿轮仅旋转一次。

　　At low speed, a driving gear with a smaller diameter drives a driven gear with a larger diameter to rotate. The gear rotation structure of "small belt and big belt" will make the driving gear with smaller diameter bear larger meshing resistance and rotational resistance. At this point, after several weeks of rotation of the small-diameter main gear, the large-diameter driven gear rotates only once.

　　山东变速箱维修人员认为在这种情况下，变速箱传递给车轮的转速将非常低。这时，我们可以在“功率=转速×扭矩”的公式中看到，在发动机输出功率不变的情况下，低档状态下转速降低，扭矩自然增大，车轮扭矩传递到车轮也发生了变化。

　　Shandong transmission maintenance personnel think that in this case, the speed of transmission to the wheel will be very low. At this time, we can see in the formula of "power = speed × torque", in the case of constant engine output power, the speed decreases in low gear, the torque increases naturally, and the torque transfer from the wheel to the wheel also changes.

　　在高速档时，变速箱的主从动齿轮是一个大直径的主齿轮带动一个小直径的从动齿轮，这意味着当主齿轮旋转一次时，从动齿轮已经旋转了几次，因此传递到车轮的转速会自然增大，然后车轮扭矩自然会减小。

　　In high gear, the main slave gear of the gearbox is a large diameter main gear driving a small diameter driven gear, which means that when the main gear rotates once, the driven gear has already rotated several times, so the speed transmitted to the wheel will naturally increase, and then the wheel torque will naturally decrease.

　　变速箱在汽车中的作用也是有目共睹的。例如，汽车变速箱可以改变传动比，扩大驱动轮扭矩和转速的变化范围，适应频繁变化的行驶条件；使发动机在有利条件下工作；在发动机转动方向不变的情况下，车辆可以倒车行驶。此外，变速器可以利用空档来中断动力传递，使发动机能够启动和怠速，便于变速器换档和动力输出。

　　Gearbox in the role of the car is also obvious. For example, the automobile gearbox can change the transmission ratio, expand the range of driving wheel torque and speed change, adapt to the frequently changing driving conditions; Make the engine work under favorable conditions; The vehicle can be driven in reverse with the engine turning in the same direction. In addition, the transmission can use neutral to interrupt power transmission, enabling the engine to start and idle, facilitating transmission shift and power output.

　　变速箱在发动机动力传递过程中起到好作用是肯定的，如果您对这方面的内容知之甚少的话，可以来我们网站www.jnbsx.com点击新闻看看相关的资讯！

　　Gearbox plays a good role in the process of engine power transmission is certain, if you know little about this content, you can come to our website www.jnbsx.com click on the news to see the relevant information!