Dubbelväxellådor

Dubbelväxellådor, often referred to as dual-clutch transmissions (DCTs), are a type of automatic transmission that uses two separate clutches for odd and even gear sets. This design allows for extremely fast and seamless gear changes, as the next gear can be pre-selected while the current gear is still engaged. This pre-selection capability significantly reduces the interruption of torque to the wheels during shifts, leading to a more responsive and efficient driving experience compared to traditional automatic transmissions.

The operation of a DCT involves two independent input shafts, one for odd gears (1, 3, 5, etc.) and one for even gears (2, 4, 6, etc.). When a gear is engaged, the clutch associated with that gear set is engaged, while the clutch for the alternate gear set is disengaged but holding the next anticipated gear. Upon shifting, the first clutch disengages as the second clutch engages simultaneously. This overlapping action is what enables the rapid and smooth transitions.

DCTs can be found in a wide range of vehicles, from sports cars and high-performance sedans to more mainstream compact and mid-size cars. They offer a compelling blend of the convenience of an automatic transmission with the performance and efficiency often associated with manual transmissions. The exact implementation and tuning of DCTs can vary between manufacturers, influencing their shift feel, responsiveness, and overall driving characteristics.