Patent
Transmission controller for continuously variable transmission system
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TLDR
In this paper, a transmission controller for a continuously variable transmission system steadily returns a gear ratio toward the low-ratio range, even after a driving pulley has stopped during sudden deceleration.Abstract:
A transmission controller for a continuously variable transmission system steadily returns a gear ratio toward the low-ratio range, even after a driving pulley has stopped during sudden deceleration. A control unit is provided which drives an actuator to move a driving-pulley movable half part to a position in the low-ratio range when a vehicle speed sensor detects the sudden deceleration of a body, a pulley number-of-revolution sensor detects stopping of the driving pulley, and then a gear ratio sensor detects that the gear ratio of the continuously variable transmission system has not returned to the low-ratio range where a sufficient acceleration is obtainable at the time of restart. Upon detecting a restart, the control unit presses the driving-pulley movable half part onto a V-belt to prevent sliding therebetween and thereby reduce a loss in the transmission of a driving force at the time of restart.read more
Citations
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Continuously variable transmission
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TL;DR: In this article, a gear ratio control unit is provided to set a target gear ratio on the basis of an operating condition of the vehicle, and when a deceleration of a vehicle exceeds a predetermined threshold, the gear ratio is maintained by controlling the drive amount of the step motor.
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