ENHANCED TORQUE MODEL FOR VEHICLE HAVING A CVT
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United States of America Patent
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Issued Date -
Mar 21, 2013
app pub date -
Sep 19, 2012
filing date -
Sep 19, 2011
priority date (Note) -
Abandoned
status (Latency Note)
Importance
Abstract
A vehicle (e.g., an ATV/UTV) comprising a body, at least two wheels supporting the body, a power source providing torque to at least one of the wheels, a torque control system for controlling the torque provided to the wheels. The torque control system has a plurality of slip modes, including a low-slip mode and a high-slip mode. A mode selector is provided for selecting one of the plurality of slip modes, and the torque control system defaults to the low-slip mode on vehicle start up. Preferably, the torque control system further includes a medium-slip mode. In another aspect, the vehicle has a continuously-variable transmission including a drive member and a driven member, and a torque control system for controlling the torque provided to the wheels. The torque control system is programmed to calculate an estimated primary torque factor and an estimated secondary torque factor for modifying as base engine torque.
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