Method of controlling engine stop-start operation for heavy-duty hybrid-electric and hybrid-hydraulic vehicles
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United States of America Patent
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Mar 30, 2010
Grant Date -
Jun 1, 2006
app pub date -
Nov 29, 2005
filing date -
Dec 1, 2004
priority date (Note) -
Expired
status (Latency Note)
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Abstract
This invention relates to a Start-Stop method for a heavy-duty hybrid vehicle that turns off the internal combustion engine when the vehicle stops or, optionally, when the vehicle travels downhill. The Stop-Start method automatically restarts the internal combustion engine when the vehicle starts accelerating or is no longer traveling downhill. The software instructions for the Stop-Start method reside within the programming of the hybrid vehicle control computer as a subset of the hybrid vehicle control strategy in hybrid-electric or hybrid-hydraulic heavy-duty vehicle. During the time the internal combustion engine is turned off the necessary vehicle accessories operate from the available power of the hybrid high power energy storage.
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