The transmission is used to change

The transmission is used to change the torque and speed of the engine crankshaft to meet the needs of the car under different driving conditions such as starting, accelerating, driving, and overcoming various road obstacles, to meet the different requirements of driving wheel traction and speed. With the continuous development of the automobile industry, the diversification, personalization, and intelligence of automobile models have become the development trend of automobiles in the future. However, transmission design has always been one of the most important links in automotive design. It is used to change the torque and speed of the engine transmitted to the drive wheels, while allowing the engine to work in the most favorable operating conditions. Therefore, its performance affects the car's power and economic indicators. The transmission can make the car run at a very low stable speed, and this low speed is difficult to achieve only by the minimum stable speed of the internal combustion engine. The reverse gear of the transmission enables the car to travel in reverse; its neutral gear allows the car to separate the engine and the drive train for a long time when starting the engine, stopping, and coasting. The structure of the transmission not only has an impact on the power and economy of the car, but also has a direct impact on the reliability and portability of the car's handling, the stability and efficiency of the transmission, and so on. The transmission and main reducer and engine parameters are optimized and matched to obtain good power and economy; the use of self-locking and interlocking devices, reverse gear safety devices, and other structural measures can ensure reliable operation without skipping, Random gears, automatic disengagement and accidentally reverse gears; the use of synchronizers can make shifting light and free of impact and noise; the use of helical gears, shape modification and parameter optimization measures can make the gear transmission stable, low noise, and different transmission ratios It can also improve the power and economy of the car on its different roads, so that the car and the engine have a good match.