Hybrid drive train and gear-changing method
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United States of America Patent
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Feb 17, 2015
Grant Date -
Dec 27, 2012
app pub date -
Jun 21, 2012
filing date -
Jun 22, 2011
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Abstract
A hybrid drive train for a motor vehicle, having an internal combustion engine for making available internal-combustion-engine drive power. A multi-step transmission has a transmission input and a transmission output. The transmission input can be connected to the internal combustion engine. The multi-step transmission is designed to set up a multiplicity of different forward gear ratios. An electric machine makes available electromotive driver power. The multi-step transmission is a range-change transmission having a first transmission group and a downstream second transmission group. The electric machine is connected to the input of the second transmission group.
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