Control valve assembly of traction drive transmission
AssigneeNissan Motor Co., Ltd.
InventorMasaki Nakano
Life of this patent
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AssigneeNissan Motor Co., Ltd.
InventorMasaki Nakano
Estimating the term…
A traction drive transmission includes a forward reverse change-over mechanism followed by a half-toroidal dual-cavity traction drive system. A control valve assembly includes a valve body. The valve body has on its periphery a mount site and formed with a first valve bore adjacent the mount site and a second valve bore. A rotary actuator in the form of a stepper motor is secured to the mount site. A forward shift control valve has a valve element and a rod slidably disposed in the first valve bore, while a reverse ratio valve has a valve element slidably disposed in the second valve bore. The rod is provided with a rack and the stepper motor has a pinion meshing the rack. A first lever associated with a first precess cam is mounted on the valve body to cooperate with the valve element of the forward shift control valve. A second lever associated with a second precess cam is mounted on the valve body to cooperate with the valve element of the reverse ratio valve.
A control valve assembly for a traction drive transmission having a forward reverse change-over mechanism followed by a traction drive system, comprising:
A traction drive transmission comprising:
A continuously variable transmission comprising:
Dependencies are inferred from the claim text.