Question from the forum “Behind the wheel” – we answer them from time to time:
Is it true that there is a clutch mechanism in an automatic transmission?
– This is true.
The design of all modern automatic transmission torque converters necessarily uses a multi-disc clutch that blocks the pump and turbine wheels. The lock allows you to save fuel when driving at constant speed and load. With a sharp change in driving conditions, the automatic box unlocks the elements of the torque converter and can change the torque again, opening the engine and transmission.
With CVTs, the torque converter works in exactly the same way.
The torque converter is locked at constant vehicle speed (acts like a closed clutch) and produces virtually no heat. Therefore, high-speed driving is still less dangerous than the pseudo-sport style of urban driving, when sharp changes in the required torque force the “brain” of the variator to unlock the torque converter. Therefore, it is better to be fast than jerky.
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Source: Z R
