Variator control system

Details Variator control system Variator control system

1998-10-16

2000-02-29

Graysay, Tamara L.

Friction gear transmission systems or components

Fluid control

Of toroidal transmission

476 41, F16H 1538

Patent

active

060303107

ABSTRACT:
A variator assembly comprises a variator of the toroidal-race rolling-traction type using double-acting pistons to control the rollers and differential end load pressure to load the variator, and control means operative to vary the differential end load pressure in sympathy with changes in the net pressure exerted by the roller-control pistons so as to maintain the traction coefficient at the roller disc interface consistently below the limit at which traction would be lost.

REFERENCES:
patent: 3826147 (1974-07-01), Sharpe et al.
patent: 3828618 (1974-08-01), Sharpe et al.
patent: 4524641 (1985-06-01), Greenwood
patent: 4854920 (1989-08-01), Mimura
patent: 5090951 (1992-02-01), Greenwood
patent: 5308298 (1994-05-01), Lambert

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