变速器课程毕业设计外文文献翻译.doc

 HYPERLINK app:ds:transmission \t _self TRANSMISSION Engine output speed is very high, the power and the maximum torque in certain areas of the speed. In order to exert the engine, you must have the best performance, to coordinate the speed of the engine and the actual speeds. Transmission in automobile driving process between the engine and wheels, in different ratios, through the shift in the engine can work under the condition of the best performance. The development trend of the transmission is more complex, more and more is also high automation degree, automatic transmission is the mainstream of the future. Car engines in certain speed can reach the best state, the output power of the bigger, fuel economy and better. Therefore, we hope in the best condition engine always work. But, in the use of the car to have different speed, the contradictions. This contradiction through the transmission to solve. Auto transmission function in a single sentence, is called the speed change, which reduced growth slowing or thickening twist. Why can increase twist, and slowing growth and to reduce twist? Put the power output unchanged, the engine power can be expressed as N = wT, w is turning, T is the angular torque. When N fixed, w and T is inversely proportional to the. So the growth will be reduced, slow increase twist. Auto transmission gear transmission is based on the principle of variable twist, each corresponding to different into gear transmission, in order to adapt to the different operating conditions. General manual transmission shaft set the input and output shaft, and say, another three axis reverse axis. Three main transmission shaft type is the speed of the input shaft structure, the speed of the engine, is also the output shaft speed is presented. By output shaft gear generated between different speeds. The gear is different with different ratio, also have different speed. Such as Zhen Zhou Nissan ZN6481W2G type SUV driver’s dynamic transmission, it is resp