View Single Post
Old 10-19-2020, 06:41 PM   #28
Norm Peterson
Scooby Specialist
Member#: 498642
Join Date: Mar 2019
Chapter/Region: Tri-State
Location: our wrx IS the family sedan
'19 WRX Ltd 6M dgm
'08 Mustang GT (the toy)


Originally Posted by car_freak85 View Post
Let's be clear on one thing: VW's DSG/Porsche's PDK are NOT automatic transmissions, nor are they a "type" of AT. They are AUTOMATED manual transmissions (AMTs).
Sorry, but as soon as you add any kind of automated shifting mode to a transmission, that transmission is by definition an "automatic" transmission by the mere fact that it can do its own shifting independently of the driver.

IOW, just because a DSG is neither a conventional torque converter/planetary gear automatic nor a CVT does not exclude it from the 'automatic' category. The operative characteristic is that a DSG/PDK/whatever includes shift logic all its own (whether you choose to use it or not). On this logic concept . . . older automatic transmissions employed hydraulic logic rather than electronic logic.

This isn't intended as flame toward DSGs, it's just a matter of characterizing them by the one feature that distinguishes as automated transmission from a manually-controlled-only transmission. It's probably best if we avoid associating any of today's automatics with terms like 'slushbox', even though that was perhaps an accurate description for some of yesteryear's automatics.

* Registered users of the site do not see these ads.
Norm Peterson is offline   Reply With Quote