Voir la version complète : Origine de la transmission automatique
J'ai un argument avec un copain.
La première transmission automatique de série sur une voiture américaine.
Il me dit Ford en 1936 et moi Cadillac dans les années 40.
Quelqu'un a t-il la réponse s.v.p?
Ricardo A
29/10/2007, 11h59
http://ask.yahoo.com/20011022.html
Voilà !
Les 2 dans le tort!
Thanks a bunch
Mai j'étais pas loin avec Cadillac! Olds en 38!
Wikipedia is your friend.
Oldsmobile's 1940 models featured Hydra-Matic drive, the first mass-production fully automatic transmissions. Initially an Olds exclusive, Hydra-Matic had a fluid coupling (not a torque converter) and three planetary gearsets providing four speeds plus reverse. Hydra-Matic was subsequently adopted by Cadillac and Pontiac, and was sold to various other automakers, including Bentley, Hudson, Kaiser, Nash, and Rolls-Royce. From 1950 to 1954 Lincoln cars were also available with GM Hydra-Matic. Mercedes-Benz subsequently devised a four-speed fluid coupling transmission that was similar in principle to Hydra-Matic, but did not share the same design.
The first torque converter automatic, Buick's Dynaflow, was introduced for the 1948 model year.
http://en.wikipedia.org/wiki/Automatic_transmission
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