Hybrid powertrain with geared starter motor and belt alternator starter and method of restarting an engine
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United States of America Patent
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Dec 16, 2014
Issued Date -
N/A
app pub date -
Oct 23, 2013
filing date -
Sep 9, 2011
priority date (Note) -
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Abstract
A hybrid powertrain has an engine, a starter motor, and a gear train that connects the starter motor with the engine, and a motor/generator. A belt drive train connects the motor/generator with the engine. The powertrain has a first energy storage device with a first operating range of voltage and a second energy storage device with a second operating range of voltage at least partially in common with the first operating range of voltage. A controller places a switching device in an on-state so that the first energy storage device is connected with the second energy storage device or in an off-state in which the first energy storage device is disconnected from the second energy storage device. The controller causes the switching device to be in the off-state and the starter motor and the motor/generator to be powered with energy from the first energy storage device to restart the engine.
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