What are the functions of an automobile powertrain? What is the function of each part of it?
The power transfer device between the automobile engine and the drive wheel is called the driveline of the automobile. It should ensure that the car has the necessary conditions of traction and speed, and that between traction and speed change coordination function, so that the car has a good dynamic performance and fuel economy; should also ensure that the automobile can reverse, and the left and right wheels can adapt to cope with speed, and power transfer pattern need and smoothly with completelyrapid separation. The transmission system includes clutch, transmission, transmission shaft, main reducer, differential and half shaft parts.
Rear drive - RR: rear engine, rear wheel driveThis type of arrangement is adopted on large passenger cars, and a small number of mini and light sedans are also adopted. The rear engine, the front axle is not easy to overload, and can make full use of the trunk area, also can effectively reduce the floor height or the middle of the bus to make full use of the space below the floor luggage, but also conducive to reduce the impact of high temperature and noise of engine drivers. The disadvantage is that the engine cooling conditions are poor, some of the faults in driving are not easily detected by the driver. The long distance operation also makes the control mechanism complex and inconvenient for maintenance and adjustment. But because of its outstanding advantages, it is used more and more in large buses.
The layout type of transmission system, the common arrangement of mechanical transmission system, mainly related to the position of engine and the drive type of automobile. Can be divided into:1. front drive - FR: engine front and rear wheel driveIt's a traditional layout. Most of the domestic and overseas freight cars, some cars and some passenger cars adopt this type. FR has the advantage of large adhesion, easy to obtain sufficient driving force, the front and rear weight of the vehicle is relatively balanced, and the handling stability is better. The disadvantage is driving multiple parts, transmission parts, transmission quality, transmission shaft through the passenger compartment occupied floor space in the cabin.
Composition and distribution of automobile transmission system:The composition and layout of the automobile powertrain vary with the type of engine, the location of the installation, and the use of the car. For example, off-road vehicles are mostly driven by four wheels, and in the transmission system, the actuators and other assemblies are added. As for the vehicle with front lead, there is no transmission shaft in its drive train.
