Toroidal continuous variable transmission for four-wheel drive a

Details Toroidal continuous variable transmission for four-wheel drive a Toroidal continuous variable transmission for four-wheel drive a

1996-05-10

1997-11-04

Marmor, Charles A.

Planetary gear transmission systems or components

Nonplanetary variable speed or direction transmission...

Nonplanetary transmission is friction gearing

475198, 475200, 475206, 475218, 74665M, 74665N, F16H 3708, F16H 1538

Patent

active

056833245

ABSTRACT:
The toroidal continuous variable transmission for four-wheel drive automobiles distributes a greater torque to the rear wheels than to the front wheels. The torque of the first driven gear is distributed 50% each to the first output shaft and the second output shaft. The torque of the second driven gear is transmitted 100% to the second output shaft. Hence, when the front wheels are connected to the first output shaft and the rear wheels to the second output shaft, the ratio between torques distributed to the front and rear wheels is about 1:3. In the event that only the front wheels should race reducing the transmitted torque, the torque transferred to the second side gear that is not racing also decreases. The rear wheels, however, are supplied with a torque from the second driven gear and therefore can secure at least 50% of the input shaft torque.

REFERENCES:
patent: 4641548 (1987-02-01), Greenwood
patent: 4922788 (1990-05-01), Greenwood
patent: 5230670 (1993-07-01), Hibi

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