AUTOMATIC TRANSMISSION WITH FRICTION ELEMENT HAVING LOCK MECHANISM, AND CONTROL METHOD THEREOF
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United States of America Patent
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Issued Date -
Sep 3, 2015
app pub date -
Sep 5, 2013
filing date -
Sep 26, 2012
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Abstract
A control unit for an automatic transmission determines whether or not a lock mechanism is in a locked condition when a non-travel mode is selected by a select switch, and does not supply an OFF pressure to a disengagement side oil chamber when it is determined that the lock mechanism is not in the locked condition.
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