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Machine translation
1. (WO1981002049) VEHICLE DIFFERENTIAL CONTROL SYSTEM
Latest bibliographic data on file with the International Bureau   

Pub. No.:    WO/1981/002049    International Application No.:    PCT/US1980/000028
Publication Date: 23.07.1981 International Filing Date: 14.01.1980
IPC:
F16D 48/12 (2006.01), F16H 48/30 (2012.01)
Applicants:
Inventors:
Priority Data:
US80/00028 14.01.1980 WO
Title (EN) VEHICLE DIFFERENTIAL CONTROL SYSTEM
(FR) SYSTEME DE COMMANDE DE DIFFERENTIELS D"UN VEHICULE
Abstract: front page image
(EN)A control system (29) for a lockable drive differential (22) of a vehicle (11) locks up the differential (22) during straight travel within a predetermined lower portion of the total range of vehicle speeds and unlocks the differential (22) during turns other than minor or momentary turning movements, manually initiated lock up being available to the operator during a turn if wheel slippage occurs. The control system (29) also maintains the differential (22) in an unlocked condition when the vehicle transmission (16) is in neutral or is shifted to a high speed range. By controlling the lockable differential (22) in response to changes of the mode of travel of the vehicle (11), rather than in response to speed differences between the differential output members (24, 26), better control of vehicle motion is realized and power dissipation and component wear in the differential is reduced. Although the control system (29) is adaptable to a variety of vehicles it is particularly advantageous in earthmoving vehicles such as loaders, for example, which are often operated on rough terrain providing poor traction.
(FR)Un systeme de commande (29) pour un differentiel (22) d"entrainement bloquant d"un vehicule bloque le differentiel (22) pendant le deplacement en ligne droite a l"interieur d"une partie inferieure predeterminee de la gamme totale de vitesse du vehicule et debloque le differentiel (22) pendant des virages qui ne sont pas des mouvements de virage momentanes ou de faible importance, le chauffeur pouvant commander manuellement le blocage pendant un virage en cas de patinage d"une roue. Le systeme de commande (29) maintient aussi le differentiel (22) a l"etat debloque lorsque la transmission (16) du vehicule est en position neutre ou est deplacee sur une gamme de vitesse elevee. En commandant le differentiel (22) bloquant en fonction des changements du mode de deplacement du vehicule (11) plutot qu"en fonction des differences de vitesse entre les organes de sortie (24, 26) du differentiel, on obtient un meilleur controle du deplacement du vehicule et de la puissance et l"usure des composants du differentiel est reduite. Bien que le systeme de commande (29) s"adapte a une variete de vehicules, son utilisation est particulierement avantageuse dans des vehicules de terrassement tels que, par exemple, des vehicules de chargement, qui sont souvent utilises sur des terrains accidentes ou la traction se revele difficile.
Designated States:
Publication Language: English (EN)
Filing Language: English (EN)