Loading...

Ravigneaux compound planetary gear set

128,894 views

Loading...

Loading...

Rating is available when the video has been rented.
This feature is not available right now. Please try again later.
Published on Jul 15, 2011

This movie show a Ravigneaux compound planetary gear set, used in automatic transmissions. It is made of two planetary geartrains sharing the same ring gear (in the movies, the ring gear has been split in two parts to better see the inner mechanism).

The two yellow ring gears turn together. All planets (short and long) are on the same planet carrier.

Number of teeth

Planets (long and short) 12
Little Sun Gear (magenta) 36
Large Sun Gear (orange) 60
Ring Gear (yellow) 84

1st Gear
Input: Little Sun Gear (magenta)
Output: Ring gear (yellow)
Planet Carrier held stationary
Ratio: 2.3 : 1

2nd Gear
Input: Little Sun Gear (magenta)
Output: Ring gear (yellow)
Large Sun Gear (orange) held stationary
Ratio: 1.6 : 1

3rd Gear
Input: Little Sun Gear (magenta)
Output: Ring gear (yellow)
All parts turn together
Ratio: 1 : 1

4th Gear (overdrive)
Input: Planet Carrier
Output: Ring gear (yellow)
Large Sun Gear (orange) held stationary
Ratio: 0.6 : 1

Reverse
Input: Large Sun Gear (orange)
Output: Ring gear (yellow)
Planet Carrier held stationary
Ratio: -1.4 : 1


------------------------------------------

Ce film montre une transmission automatique de type Ravigneaux, constituée de deux trains d'engrenages planétaires partageant une même couronne (la couronne a été séparée en deux pour mieux voir l'intérieur du mécanisme).

Nombre de dents:

Planètes (longues et courtes) 12
Petit pignon central (magenta) 36
Grand pignon central (orange) 60
Couronne (yellow) 84


1er rapport:
Entrée: Petit pignon central (magenta)
Sortie: Couronne (jaune)
Support des satellites immobile
Rapport: 2.3 : 1

2ème rapport:
Entrée: Petit pignon central (magenta)
Sortie: Couronne (jaune)
Grand pignon central (orange) immobile
Rapport: 1.6 : 1

3ème rapport:
Entrée: Petit pignon central (magenta)
Sortie: Couronne (jaune)
Tout tourne ensemble
Rapport: 1 : 1

4ème rapport (overdrive):
Entrée: Support des satellites
Sortie: Couronne (jaune)
Grand pignon central (orange) immobile
Rapport: 0.6 : 1

Marche arrière:
Entrée: Grand pignon central (orange)
Sortie: Couronne (jaune)
Support des satellites immobile
Rapport: -1.4 : 1

Loading...

When autoplay is enabled, a suggested video will automatically play next.

Up next


to add this to Watch Later

Add to

Loading playlists...