外文翻译---汽车变速器设计

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1、附录 Transmission design As we all know automobile engine to a certain speed can be achieved under the best conditions, when compared issued by the power, fuel economy is relatively good. Therefore, we hope that the engine is always in the best of conditions to work under. However, the use of motor ve

2、hicles need to have different speeds, thus creating a conflict. Transmission through this conflict to resolve. Automotive Transmission role sum up in one sentence, called variable speed twisting, twisting or slow down the growth rate by increasing torsional. Why can slow down by twisting, and the gr

3、owth rate but also by twisting? For the same engine power output, power can be expressed as N = WT, where w is the angular velocity of rotation. When N fixed, w and T is inversely proportional to the. Therefore, the growth rate will reduce twisting, twisting slowdown will increase. Automotive Transm

4、ission speed gear based on the principle of variable twisted into various stalls of different transmission ratio corresponding to adapt to different operational conditions. General to set up a manual gearbox input shaft, intermediate shaft and output shaft, also known as the three-axis, as well as D

5、aodang axis. Three-axis is the main transmission structure, input shaft speed is the speed of the engine, the output shaft speed is the intermediate shaft and output shaft gear meshing between different from the speed. Different gears are different transmission ratio, and will have a different speed

6、. For example Zhengzhou richan ZN6481W2G manual transmission car-SUV, its transmission ratio are: 1 File 3.704:1； stalls 2.202:1； stalls 1.414:1； stalls 1:1 5 stalls (speeding file) 0.802: 1. When drivers choose a launch vehicle stalls, Plectrum will be 1 / 2 file synchronization engagement with a b

7、ack stall gear and output shaft lock it, the power input shaft, intermediate shaft and output shaft gear of a stall, a stall the output shaft gear driven, and the output shaft power will be transmitted to the drive shaft (red arrow). A typical stall Biansuchilun transmission ratio is 3:1, that is to

8、 say three laps to the input shaft and output shaft to a circle. When the growth rate of car drivers choose two stalls, Plectrum will be 1 / 2-file synchronization and file a joint separation after 2 stall and lock the output shaft gear, power transmission line similar, the difference is that the ou

9、tput shaft gear of a stall 2 stall replaced by the output shaft gear driven. 2 stall Biansuchilun typical transmission ratio is 2.2:1, 2.2 laps to the input shaft and output shaft to a circle than a stall speed increase, lower torque. When refueling vehicle drivers growth stalls option 3, Plectrum t

10、o 1 / 2 back to the free file-synchronization position, and also allows the 3 / 4 file synchronization Mobile stall until 3 in the output shaft gear lock, power can be into the shaft axis - intermediate shaft - the output shaft of the three stalls Biansuchilun, led through three stalls Biansuchilun

11、output shaft. 3 stalls typical transmission ratio is 1.7:1, 1.7 laps to the input shaft and output shaft to a circle is further growth. When car drivers Option 4 refueling growth stalls, Plectrum will be 3 / 4 from the 3-file synchronization stall gear directly with the input shaft gear joint initia

12、tive, and power transmission directly from the input shaft to the output shaft, the transmission ratio at 1:1, that the input shaft and output shaft speed the same. The driving force without intermediate shaft, also known as direct file, the file transmission than the maximum transmission efficiency

13、. Most cars run-time files are used directly to achieve the best fuel economy. Shift into the first interval when, in a free transmission when Biansuchilun output shaft is not locked in, they cannot rotate the output shaft driven, not power output. General automotive manual transmission than the mai

14、n 1-4 stalls, usually the first designers to determine the minimum (one stall) and maximum (4 files) transmission ratio, the middle stall drive by geometric progression than the general distribution. In addition, there are stalls Daodang and speeding, speeding file is also known as the five stalls.

15、When the car to accelerate to more than car drivers with the choice of five stalls, and a typical five-transmission ratio is 0.87:1, which is driven by a pinion gear, the gear when the initiative to 0.87 zone, passive gear have been transferred to a circle of the End. Dao Dang, the opposite directio

16、n to the output shaft rotation. If one pair of meshing gears when we reverse rotation, with a middle gear, it will become the same to the rotation. Use of this principle, we should add a gear Daodang the media will be rotational direction reversed, it will have a Daodang axis. Daodang installed in the transmission shaft independent crust, and the intermediate shaft parallel axis gear with the intermediate shaft and output shaft gear meshing gears, will be contrary to the output shaft.