Range determination apparatus

Range determination apparatus

A range determination apparatus for preventing a shift range from being undefined during speed change states of an automatic transmission with no manual valve. The range determination apparatus includes a gear speed change mechanism and a plurality of friction engagement elements operative to have r...

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Hauptverfasser: NOZAKI YOSHINOBU, ITAZU NAOKI
Format: Patent
Sprache:eng
Schlagworte:
CALCULATING
COMPUTING
COUNTING
ELECTRIC DIGITAL DATA PROCESSING
PHYSICS
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creator NOZAKI YOSHINOBU
ITAZU NAOKI
description A range determination apparatus for preventing a shift range from being undefined during speed change states of an automatic transmission with no manual valve. The range determination apparatus includes a gear speed change mechanism and a plurality of friction engagement elements operative to have respective operation states changed between an engagement and a disengagement state. The range determination apparatus is used for automatic transmissions subject to speed changes via a torque transmission path of the gear speed change mechanism changed by the operation states of the friction engagement elements. A real shift range determination is carried out on the basis of the operation states of the friction engagement elements, where a T-ECU is operative to determine a current shift range based on detection results obtained by oil pressure sensors and operation patterns preliminarily memorized when the operation states of the friction engagement elements are not being changed.
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A real shift range determination is carried out on the basis of the operation states of the friction engagement elements, where a T-ECU is operative to determine a current shift range based on detection results obtained by oil pressure sensors and operation patterns preliminarily memorized when the operation states of the friction engagement elements are not being changed.</description><language>eng</language><subject>CALCULATING ; COMPUTING ; COUNTING ; ELECTRIC DIGITAL DATA PROCESSING ; PHYSICS</subject><creationdate>2013</creationdate><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&amp;date=20130917&amp;DB=EPODOC&amp;CC=US&amp;NR=8538642B2$$EHTML$$P50$$Gepo$$Hfree_for_read</linktohtml><link.rule.ids>230,308,780,885,25564,76547</link.rule.ids><linktorsrc>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&amp;date=20130917&amp;DB=EPODOC&amp;CC=US&amp;NR=8538642B2$$EView_record_in_European_Patent_Office$$FView_record_in_$$GEuropean_Patent_Office$$Hfree_for_read</linktorsrc></links><search><creatorcontrib>NOZAKI YOSHINOBU</creatorcontrib><creatorcontrib>ITAZU NAOKI</creatorcontrib><title>Range determination apparatus</title><description>A range determination apparatus for preventing a shift range from being undefined during speed change states of an automatic transmission with no manual valve. 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The range determination apparatus includes a gear speed change mechanism and a plurality of friction engagement elements operative to have respective operation states changed between an engagement and a disengagement state. The range determination apparatus is used for automatic transmissions subject to speed changes via a torque transmission path of the gear speed change mechanism changed by the operation states of the friction engagement elements. A real shift range determination is carried out on the basis of the operation states of the friction engagement elements, where a T-ECU is operative to determine a current shift range based on detection results obtained by oil pressure sensors and operation patterns preliminarily memorized when the operation states of the friction engagement elements are not being changed.</abstract><oa>free_for_read</oa></addata></record>
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subjects CALCULATING
COMPUTING
COUNTING
ELECTRIC DIGITAL DATA PROCESSING
PHYSICS
title Range determination apparatus
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