Drive axle control system
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United States of America Patent
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-
Dec 31, 2002
Grant Date -
Dec 5, 2002
app pub date -
Jun 1, 2001
filing date -
Jun 1, 2001
priority date (Note) -
Expired
status (Latency Note)
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Abstract
Tandem drive axles include a pair of drive axles interconnected by a thru-shaft. An inter-axle differential allows speed differentiation between the pair of axles. Differences in tire rolling radii and variations in axle load distribution between the pair of drive axles are examples of why axle differentiation is needed. By measuring and monitoring wheel speed and/or tire pressure, tire rolling radii differences can be determined and appropriate adjustments can be made to tire pressures to provide a common tire rolling radii range for all tires. In addition to tire pressure adjustment, by adjusting other axle parameters that affect axle performance, such as suspension height and weight distribution, the need for axle differentiation is eliminated.
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