192 clutches and power-stop control – Vortex-flow drive and clutch – With brake
Patent
1981-11-24
1984-08-21
Krizmanich, George H.
192 clutches and power-stop control
Vortex-flow drive and clutch
With brake
192 0052, 192 0076, 192 0092, 74866, B60K 4128
Patent
active
044665210
ABSTRACT:
An electric control system for an automobile transmission includes an endless transmission member running on a pair of V-shaped pulley units, the mutual distances of the conical sheaves of which are hydraulically adjustable to transmit an output torque of an engine to a driven apparatus. The electric control system is arranged to determine an optimum fluid pressure in relation to the actual output torque of the engine and to determine an optimum transmission ratio for low fuel consumption in relation to the actual output power of the engine. The control system produces a first electric control signal indicative of the difference between the optimum fluid pressure and the actual fluid pressure in one of actuators for the respective pulley units and produces a second electric control signal indicative of the difference between the optimum and actual transmission ratios. The pressure of fluid applied to one of the actuators is controlled in response to the first electric control signal, and the flow quantity of fluid applied to the other actuator is controlled in response to the second electric control signal.
REFERENCES:
patent: 4161894 (1979-07-01), Giacosa
patent: 4228691 (1980-10-01), Smirl
patent: 4282947 (1981-08-01), Kemper
patent: 4314340 (1982-02-01), Miki et al.
Goshima Takahiro
Hattori Yoshiyuki
Hayakawa Hideyuki
Matsui Kazuma
Takei Toshihiro
Krizmanich George H.
Mauley M.
Nippondenso Co. Ltd.
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