Preselective automatic transmission
A manual transmission is a type of automatic transmission that operates differently than a standard automatic transmission. It uses two clutches: one for odd gears and one for even gears.
Working principle:
1. Gear selection: When the driver selects a gear using the selector, the transmission “preselects” (pre-selects) the next gear using the shift fork.
2. Clutch release: The current gear is disengaged using the appropriate clutch.
3. Clutch Engagement: The clutch of the next gear is engaged, connecting it to the gearbox shaft.
4. Gear Shift: The gear shift occurs and the new clutch smoothly connects the new gear to the engine.
Other features:
* Preselective transmissions are typically faster and more efficient than standard automatic transmissions.
* They provide a sportier and more exciting driving experience.
*They may have manual controls for driver shifting.
*These transmissions are often used in high performance cars and racing cars.
Examples of preselective gearboxes:
* Volkswagen DSG (Direct Shift Gearbox)
* BMW DCT (Dual Clutch Transmission)
* Porsche PDK (Porsche Doppelkupplungsgetriebe)
*Audi S tronic