A dual-clutch transmission (DCT) is an automated gearbox that houses two independent clutch assemblies side by side. One clutch controls the odd-numbered gears while the other handles the even-numbered gears. As the vehicle accelerates in one gear, the transmission pre-selects the next gear on the open clutch, allowing the shift to happen almost instantaneously by simultaneously engaging one clutch and disengaging the other.
The customer is complaining about low-speed shudder, which is pretty common on these dry-clutch DCTs.
Unlike traditional automatics with torque converters, DCTs can feel jerky or hesitant during stop-and-go traffic because physical clutch plates are slipping to modulate power.
Also heard as
- dual-clutch transmission
- twin-clutch transmission
Related terms
Automated manual transmission
A gearbox with manual internals that uses computer-controlled actuators to shift and clutch.
Automatic transmission
A gearbox that changes gear ratios independently without a manual clutch pedal.
Manual transmission
A gearbox requiring the driver to manually select gear ratios using a shift lever and a clutch.
Clutch
The mechanical assembly that connects and disconnects the engine from the transmission.