What is the name of the hydraulic and electronic control unit in a dual-clutch transmission?

The hydraulic and electronic control unit in a dual-clutch transmission is called the mechatronic unit.

It combines hydraulic valves, electronic sensors, control circuitry and actuators in one module. The transmission control unit uses information such as engine speed, vehicle speed, throttle position and clutch position to decide when and how firmly to engage each clutch.

A dual-clutch transmission uses two clutches: one normally serves odd-numbered gears and the other even-numbered gears. While one gear is transmitting power, the next gear can be preselected, allowing rapid shifts. The mechatronic unit coordinates that preselection and transfers hydraulic pressure to the appropriate clutch and gear selectors.

It is often confused with a valve body, but a valve body is primarily the hydraulic valve assembly. A clutch pack is the friction hardware that transmits torque, while a torque converter is used in many conventional automatics rather than in the usual DCT design.