What are the criteria for judging the performance of an automobile engine?
The 4. rear engine, rear wheel drive (RR): it seems to be a facelift of the FF car, just in front of the car after the shift to "the viscera". The vehicle retains the advantages of FF bus, FF also eliminates the shortcomings of the car, because the car layout more reasonable, and the noise and improve the temperature inside the car, with its unique structure and good performance by the users.
3. front engine and front wheel drive (FF): it is the layout that is gradually becoming popular in domestic and international cars in 1990s. In order to shorten the length of the vehicle, reduce car quality, often before the engine is arranged on the front axle, transmission after things move forward, transmission and drive axle as a whole, fixed on the engine side, the power is delivered directly to the front wheel, reduce chassis height, improve handling and stability at high speed. Such as the common Audi 100 sedan, and mini car (Xiali, Alto) with front engine, front wheel drive transmission system arrangement, common front engine, front axle drive car also has two kinds of structure: one is the motor axis and front axle parallel to the horizontal type (such as Xiali car); two is the engine a vertical (such as Santana, Audi and other car).
2. all wheel drive (NWD): off-road vehicle is a unique form. (such as BJ2020, Cherokee, etc.). Usually the engine is pre - loaded with a distributor behind the transmission so that power is transmitted to the wheels separately. All wheel drive, good power, good climbing and off-road capability. Compared with the front and rear wheel drive, the utility model has the advantages of complicated structure, high cost and low transmission efficiency.
1. engine front and rear wheel drive (FR): most of the domestic and foreign truck, part of the car and part of the bus are using this traditional form of driving. It is a front wheel steering, rear wheel drive, the power output of the engine through the clutch transmission drive shaft - delivered to the drive axle, the speed reduction and torque increase after the transfer to the back of the right half axle, rear wheel drive car to run, front and rear wheel steering and driving all the staff, separated, load distribution.
