Torque converter automatic transmission Mercedes-Benz Viano
The torque converter is an integral component of the Mercedes-Benz Viano automatic transmission. It is responsible for transmitting torque from the engine to the gearbox and performs the following functions:
*Torque Transmission: Converts engine torque into torque suitable for rotating the transmission shaft.
* Torque Multiplier: Increases torque at low speeds, making starting and acceleration easier.
*Hydraulic coupling: Provides smooth and continuously variable gear shifting.
* Vibration Damping: Reduces torsional vibrations that occur when shifting gears or changing loads.
Torque converter design
The Mercedes-Benz Viano torque converter consists of the following main components:
* Pump: Driven by the engine and creates a flow of ATF.
* Turbine: Connected to the gearbox shaft and rotates under the influence of the flow of working fluid.
* Reactor: Located between the pump and turbine and regulates the transmission ratio of the torque converter.
* ATF: The hydraulic fluid that circulates inside the torque converter, transferring power and lubricating components.
Operating principle
* The ATF working fluid is circulated by a pump.
* The fluid flow enters the turbine and spins it.
* The turbine transmits torque to the reactor.
* The reactor directs the fluid flow back into the pump, increasing torque.
* Increased torque is transmitted to the gearbox shaft.
Torque converter control
The torque converter is controlled by the electronic transmission control unit (TCU). The TCU regulates the flow of ATF in the reactor using solenoids, changing the transmission ratio and torque converter characteristics depending on driving conditions.
Torque Converter Maintenance
To ensure proper operation of the torque converter, it is important to carry out regular maintenance:
* Regular replacement of ATF and automatic transmission filter
* Checking the ATF level
* Diagnose and troubleshoot torque converter and related components