Machine element or mechanism – Gearing – With fluid drive
Patent
1990-03-27
1991-09-17
Diehl, Dwight
Machine element or mechanism
Gearing
With fluid drive
60355, F16H 4706
Patent
active
050483714
ABSTRACT:
A continuously variable transmission (3, 4, 5, 6, 7, 8, 9) is provided with a torque converter (2) having an ingoing shaft (1), whereby the torque converter has such torque converting factors at various speeds of the ingoing shaft that the torque characteristic of the torque converter approximates the characteristic of the maximum torque to be transmitted by means of the transmission and the control system for a substantial part of the speed range. This results in an increased torque at low speeds of the ingoing shaft, especially at driving off in a motor vehicle. Furthermore a loss of power is reduced because an overdimensioning of the control system which controls the pressure in control cylinders (18, 19) of the transmission is no longer needed.
REFERENCES:
patent: 3808809 (1974-05-01), Upton
patent: 3986356 (1976-10-01), Frotschner et al.
patent: 4274520 (1981-06-01), Van der Haudt Aberson
patent: 4455888 (1984-06-01), Wayman et al.
patent: 4478105 (1984-10-01), Yamamuro et al.
patent: 4631979 (1986-12-01), Tamura et al.
patent: 4649773 (1987-03-01), Svab
"Torque Converters or Transmissions"; by Heldt; pp 79-83 & 272-283; 4th edition; Aug. 1951.
Diehl Dwight
VAN Doorne's Transmissie B.V.
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