Traction control system using torque sensor for adaptive engine throttle control
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United States of America Patent
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-
Nov 27, 2012
Grant Date -
Sep 24, 2009
app pub date -
Aug 10, 2007
filing date -
Aug 21, 2006
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A system and method using a vehicle drive shaft torque coupled to a driven wheel and a non-driven wheel speed for a vehicle throttle control system includes reading first and second torque values generated by the torque sensor. The method identifies when a sustained drop occurs between the first and second torque values. Another step determines if a change occurred between the first and second torque value readings in any of: a throttle position; a gear setting; and a brake pressure. A detected traction loss is signaled when the sustained drop occurred with no change between the first and second torque value readings in the throttle position, gear setting, and brake pressure. A desired throttle value is calculated using an engine torque and a target engine speed to prevent driven wheel slip. A throttle command signal changes an existing throttle value to the desired throttle value.
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