Multi-mode power trains with direct-drive lock-up
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United States of America Patent
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Aug 30, 2016
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app pub date -
Feb 26, 2014
filing date -
Feb 26, 2014
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Abstract
A multi-mode power train and multi-mode vehicle include a A power-conversion device that is in communication with an engine via a direct mechanical power-transfer connection extending from the engine to the power-conversion device. A continuously variable power source (CVP) is in communication with the power conversion device via an intermediate power-transfer connection. A lock-up device with first and second engagement states is provided between the engine and the power-conversion device or the CVP. With the lock-up device in the first engagement state, mechanical power from the engine is converted by the power-conversion device for use by the CVP, with the CVP using the converted power to provide mechanical power to a power-output connection. With the lock-up device in the second engagement state, the engine transmits mechanical power through the lock-up device to the power-output connection.
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