The most important components of an automatic transmission are the torque converter, planetary gear and hydraulic or electronic gear control.
Hydraulically controlled multi-disc brakes and friction clutches are used to shift gears.
The torque converter in its mode of action resembles a hydraulic clutch. It provides the possibility of starting the car from a place and switching individual steps without engaging a mechanical clutch.
Gear shifting in an automatic transmission is controlled by an electronic control device.
Manual motion programs such as "economical" And "sports", not provided. Instead, the control unit recognizes from the speed with which the driver presses the accelerator pedal whether he prefers sporty or economical driving. In this case, the device controls gear shifting accordingly. Shift points are also affected by driving conditions, such as uphill or downhill driving, as well as the presence of a trailer and headwind.
In the event of faults in input signals or solenoid valves, the emergency driving program is switched over. The resulting fault is also recorded in the memory of the failure accumulation device. In the future, this information can be called up using a polling device.
To assess the performance of an automatic transmission and to correctly troubleshoot, experience with automatic transmissions of this type and the availability of appropriate working skills are essential.
Warning: Vehicles with automatic transmission may be towed up to 50 km at a maximum speed of 50 km/h. If there is a platform for transporting cars, only the front of the car can be raised. All-wheel drive vehicles must be installed on the platform with four wheels.
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