电动车知识(国外英文资料).docVIP

电动车知识(国外英文资料) Pioneer or after drive? In many peoples minds, the latter is a luxury, high-performance representative. Some cars are not positioned low, but are often scoffed at because of the forerunner. Is that really the case? Because of the technical content after flooding higher, why early cars are the rear wheel drive, Citroen has just developed when the precursor technology, why become the most advanced technology is widely adopted? As the driving mode of the vehicle, both the front and rear drive have advantages and disadvantages, then what are the advantages and disadvantages of the front and rear drive, and which ones are suitable for each other respectively? The following content will be analyzed one by one. Lets take a look at the place where the former car was better than the latter. The drive efficiency of the front drive is higher than that of the latter. When all the front driving cars are designed, no matter whether the engine is transverse or vertical, the center of gravity is limited to the front axle, that is, at the front of the engine, very close to the driving wheel and short transmission distance. Among other things, the former engine was the most efficient, which was the arrangement adopted by most previous cars. As the engine output shaft in parallel with the automobile front axle, gear box and driving axle is integrally fixed on the engine side, the power can be directly through the inclined gear transmission to the differential, the gearbox, drive axle, deceleration torque increase to two axle final drive car wheel spins, obviously this is the shortest distance and, without any change of the transmission efficiency is the highest. Most of the civilian rear wheel drive, using the front or front mid engine rear wheel drive layout, then the power from the engine after the gearbox, a drive shaft must pass long, the joint is transferred to the rear differential, and then from the differential is to distinguish the two half shafts respectively d