CONTROL APPARATUS FOR A HYBRID VEHICLE DRIVE SYSTEM
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United States of America Patent
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Issued Date -
Dec 17, 2015
app pub date -
Jun 8, 2015
filing date -
Jun 13, 2014
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Abandoned
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Abstract
Control apparatus for hybrid vehicle drive system including a plurality of coupling elements which selectively connect selected ones of rotary components of differential device and stationary member to each other, and which permit the drive system to be placed in one of electric motor drive mode, and constant-speed-ratio drive modes in which an engine is operated as drive power source, control apparatus selectively establishing one of hybrid drive mode and electric motor drive mode, with an engaging action of one of coupling elements, and one of constant-speed-ratio drive modes, with an engaging action of another coupling element as well as or in place of engaging action of above-indicated one coupling element, control apparatus including drive mode switching portion configured to establish one of hybrid drive mode and electric motor drive mode, when drive system is required to be switched from neutral state to a vehicle drive state.
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