Vehicular belt-driven continuously variable transmission and...

Details Vehicular belt-driven continuously variable transmission and... Vehicular belt-driven continuously variable transmission and...

F - Mech Eng,Light,Heat,Weapons

16

H

F16H 61/662 (2006.01)

Patent

CA 2656874

In a vehicular belt-driven continuously variable transmission, belt squeezing force is inhibited from becoming excessive and a safety factor, with respect to belt slip, of belt squeezing force applied to a transmission belt (48) is reduced to a value that is less than or equal to 1.5 by reducing a pressure receiving area (SOUT) of an output side hydraulic cylinder (46c). As a result, a centrifugal hydraulic pressure canceller chamber on a secondary pulley side (46) can be eliminated thus simplifying the structure of the vehicular belt-driven continuously variable transmission, while belt squeezing force can be appropriately controlled.

Dans la présente invention, dans une transmission de véhicule variant en continu entraînée par courroie, on empêche la force de pincement de courroie de devenir excessive et on réduit le facteur de sécurité, par rapport au glissement de la courroie, de la force de pincement de courroie appliquée à une courroie de transmission (48), à une valeur inférieure ou égale à 1,5 en réduisant une surface de réception de pression (SOUT) d'un cylindre hydraulique latéral de sortie (46c). Par conséquent, une chambre d'annulation de pression hydraulique centrifuge située sur un côté de poulie secondaire (46) peut être éliminée, simplifiant ainsi la structure de la transmission de véhicule variant en continu entraînée par courroie, tandis que la force de pincement de courroie peut être commandée de façon appropriée.

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