Variable ratio power transmission mechanisms

Details Variable ratio power transmission mechanisms Variable ratio power transmission mechanisms

1981-06-29

1983-09-06

Staab, Lawrence J.

Machine element or mechanism

Elements

Gear casings

74690, 74681, 74785, F16H 3700

Patent

active

044022379

ABSTRACT:
A variable ratio power transmission mechanism having particular application to motor vehicle drive comprises a mechanical variator of the variable pitch V-pulley and drive chain type working in conjunction with three interconnected epicyclic planetary gearsets which operate with torque recirculation to substantially double the ratio spread of the variator. Ratio control means for the variator, responsive to engine and vehicle operating parameters and to a driver-operable control, allow a vehicle engine to operate always at an appropriate speed for the prevailing conditions, thus at optimum efficiency for economy during cruising operation, but at maximum power (in response to a driver signal) when optimum performance is required.

REFERENCES:
patent: 3203277 (1965-08-01), General
patent: 3670594 (1972-06-01), Roper
patent: 4355547 (1982-10-01), Poole et al.

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