Automobile transmission system includes front and rear drive, rear drive, front and rear drive, middle and rear drive and four-wheel drive. Rear-drive means that the engine is rear-mounted and rear-wheel drive. Its advantages are that the front axle is not easy to overload, and the car area can be fully utilized, which can effectively reduce the height of the car body floor or fully utilize the luggage between the middle floors of the car, and reduce the influence of engine high temperature and noise on drivers.
Front drive refers to engine front drive and front wheel drive. Its advantages are simple operating mechanism and good heat dissipation condition of engine. The disadvantage is that the mass of the car moves backward when going uphill, which reduces the adhesion quality of the front driving wheel and makes the driving wheel slip easily. When braking downhill, due to the forward mass of the car, the front wheel is overloaded and it is easy to roll over at high speed.
Central rear drive, that is, engine central rear wheel drive. Its advantages are uniform axial load distribution and very neutral control characteristics. The disadvantage is that the engine occupies the empty cabin, which reduces the utilization and practicability of the empty cabin. So MR is mostly a sports car that pursues handling performance. The advantage of four-wheel drive is that all four wheels have power, which is the biggest for attach rate on the ground, and has good passability and power.
Million car purchase subsidy