Automatic Change Over

HomeReference InformationKPPs and assembliesАКПП - automatic gearbox An automatic gearbox (automatic transmission) selects the gear ratio without the participation of the driver - in a fully automatic mode. The purpose of the "automatic" box is the same as that of the "mechanics". Its main function is to receive, transform and transfer the rotational forces of the engine to the driving wheels of the car. But the "automatic" is much more complicated than the "mechanics". It includes the following units: 8B. The functionality of the automatic gearbox entirely depends on the torque converter, planetary gearbox and several devices that allow you to control the gear unit. To more fully describe the principle of automatic transmission functioning, you will need to delve into the functionality of each of these mechanisms. The torque converter transmits torque to the planetary assembly. It performs the functions of both a clutch and a fluid coupling. Structurally, the planetary gear consists of two multi-blade impellers (pump and turbine wheel), which are located opposite one another. Both im Automatic Change Over pellers are enclosed in one housing and oil is poured between them. The turbine wheel is connected to the planetary gear through a shaft. The impeller is rigidly attached to the flywheel. After starting the power unit, the flywheel begins to rotate and drives the pump impeller. Its blades pick up the working fluid and redirect it to the blades of the turbine impeller, forcing it to rotate. To prevent oil backflow, a vane reactor is placed between the two impellers. It corrects the direction of oil flow and flow density by synchronizing the speed of both impellers. At first, the reactor does not move, but as soon as the wheel speeds are equal, it starts to rotate at the same speed. This is the point of engagement. The gearbox includes the following components: The planetary device has a structure that corresponds to its name. It is a gear ("sun") located inside the "carrier". The satellites are attached to the "carrier"; when rotating, they touch the ring gear. And the clutches are in the form of discs, interspersed with plates. Some of them rotate synchronously with the shaft, and some in the opposite direction. A band brake is a plate that encloses one of the planetary devices. Its work is coordinated by a hydraulic actuator. The planetary gearbox control system regulates the supply of working fluid by braking or releasing the rotation elements, thereby correcting the load on the wheels. As you can see, the power of the motor is transmitted through the liquid to the gear unit. Therefore, the quality of the oil plays a critical role in the operation of automatic transmissions. Almost all types of automatic transmissions today have the same modes of operation as they did half a century ago, without any major changes. Automatic transmission is carried out according to the following standards: Today, the most common layout is the P-R-N-D-L layout. It first appeared on Ford vehicles and has since been used as the most convenient and practical model for changing gears in all vehicles in the world. On some modern auto transmissions, additional driving modes can be installed: https://jiji.ng/osogbo/power-equipments/automatic-change-over-eZ7sdOEoCBnIYn56x25zGXS9.html