B - Operations – Transporting – 60 – K
Patent
B - Operations, Transporting
60
K
341/68
B60K 17/04 (2006.01) F16D 48/06 (2006.01) H02P 29/00 (2006.01)
Patent
CA 2021399
ABSTRACT OF THE DISCLOSURE A control system for continuously variable transmissions is operative in a number of functional modes. A "neutral mode" fully disengages a clutch and sets a variable ratio to an extreme low ratio when a gear shift is in a neutral position. A "hold mode" slightly engages the clutch to cause a finite amount of vehicle creep when the gear shift is in a forward or reverse position and a throttle is fully released. A "normal start mode" partially engages the clutch when the gear shift is in a forward or reverse position and the throttle is depressed. A "drive mode" fully engages the clutch and sets the variable ratio to maintain a predetermined engine speed when the vehicle is travelling at greater than a predetermined minimum vehicle speed and the clutch is slipping at less than a predetermined amount of clutch slip.
Borg-Warner Automotive Inc.
Macrae & Co.
Taylor Danny R.
LandOfFree
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