Friction gear transmission systems or components – Fluid control – Of toroidal transmission
Patent
1997-10-14
2000-06-20
Bucci, David A.
Friction gear transmission systems or components
Fluid control
Of toroidal transmission
F16H 6130
Patent
active
060771852
ABSTRACT:
This invention relates to a toroidal type continuously variable transmission in which a plurality of power rollers are squeezed between an input cone disk and an output cone disk which are arranged upon the same axis of rotation. The gyration angles of the power rollers, in other words the speed change ratio, are changed by pistons driving the power rollers in directions perpendicular to the axis of rotation in response to hydraulic pressure. Hydraulic pressure is supplied from a speed change control valve via hydraulic fluid conduits. By providing, for example, orifices in hydraulic fluid conduits so as to exert resistance against movement of the pistons due to external disturbance, the influence exerted by displacement of a particular one of the power rollers due to external disturbance upon the other ones of the power rollers is minimized, and thus the spoiling of the synchronization of the power rollers by vibration is prevented.
REFERENCES:
patent: 3001367 (1961-09-01), Bartholomew
patent: 3870077 (1975-03-01), Nakamura
patent: 4662248 (1987-05-01), Greenwood
patent: 5542890 (1996-08-01), Nakano et al.
patent: 5575732 (1996-11-01), Inoue
patent: 5697216 (1997-12-01), Phillips
Nakano et al., "Dynamic Characteristics of Speed Ratio Control of the Halt Toroidal CVT for Passenger Cars" SAE Technical Paper Series pp. 24-32 (1990).
Bucci David A.
Nissan Motor Co,. Ltd.
Stallman Brandon C.
LandOfFree
Toroidal type continuously variable transmission does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Toroidal type continuously variable transmission, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Toroidal type continuously variable transmission will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1847742