Control device and control method for automatic transmission
The transmission control unit has a gear ratio abnormality determination unit and a limp home control unit. The gear ratio abnormality determination unit determines that the gear ratio is abnormal when a difference between an actual gear ratio calculated from a transmission input shaft rotational sp...
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| creator | AMANO NORIHIRA HAMANO MASAHIRO |
| description | The transmission control unit has a gear ratio abnormality determination unit and a limp home control unit. The gear ratio abnormality determination unit determines that the gear ratio is abnormal when a difference between an actual gear ratio calculated from a transmission input shaft rotational speed and a transmission output shaft rotational speed and a set gear ratio in the predetermined gear stage is equal to or greater than a set value during traveling on the basis of the predetermined gear stage. When the gear ratio abnormality determination unit determines that the gear ratio is abnormal, the limp home control unit outputs a release instruction for releasing all of the plurality of friction elements, and when the transition to the neutral state is confirmed by the output of the release instruction, the limp home control unit controls the limp home. On the basis of rotation/stop information of a rotating member included in the gear train, engagement/release of a specific friction element among the plur |
| format | Patent |
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The gear ratio abnormality determination unit determines that the gear ratio is abnormal when a difference between an actual gear ratio calculated from a transmission input shaft rotational speed and a transmission output shaft rotational speed and a set gear ratio in the predetermined gear stage is equal to or greater than a set value during traveling on the basis of the predetermined gear stage. When the gear ratio abnormality determination unit determines that the gear ratio is abnormal, the limp home control unit outputs a release instruction for releasing all of the plurality of friction elements, and when the transition to the neutral state is confirmed by the output of the release instruction, the limp home control unit controls the limp home. On the basis of rotation/stop information of a rotating member included in the gear train, engagement/release of a specific friction element among the plur</description><language>chi ; eng</language><subject>BLASTING ; COMBUSTION ENGINES ; CONTROLLING COMBUSTION ENGINES ; ENGINEERING ELEMENTS AND UNITS ; GEARING ; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS ; HEATING ; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS ; LIGHTING ; MECHANICAL ENGINEERING ; THERMAL INSULATION IN GENERAL ; WEAPONS</subject><creationdate>2022</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&date=20220422&DB=EPODOC&CC=CN&NR=114391072A$$EHTML$$P50$$Gepo$$Hfree_for_read</linktohtml><link.rule.ids>230,308,780,885,25564,76547</link.rule.ids><linktorsrc>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=20220422&DB=EPODOC&CC=CN&NR=114391072A$$EView_record_in_European_Patent_Office$$FView_record_in_$$GEuropean_Patent_Office$$Hfree_for_read</linktorsrc></links><search><creatorcontrib>AMANO NORIHIRA</creatorcontrib><creatorcontrib>HAMANO MASAHIRO</creatorcontrib><title>Control device and control method for automatic transmission</title><description>The transmission control unit has a gear ratio abnormality determination unit and a limp home control unit. The gear ratio abnormality determination unit determines that the gear ratio is abnormal when a difference between an actual gear ratio calculated from a transmission input shaft rotational speed and a transmission output shaft rotational speed and a set gear ratio in the predetermined gear stage is equal to or greater than a set value during traveling on the basis of the predetermined gear stage. When the gear ratio abnormality determination unit determines that the gear ratio is abnormal, the limp home control unit outputs a release instruction for releasing all of the plurality of friction elements, and when the transition to the neutral state is confirmed by the output of the release instruction, the limp home control unit controls the limp home. On the basis of rotation/stop information of a rotating member included in the gear train, engagement/release of a specific friction element among the plur</description><subject>BLASTING</subject><subject>COMBUSTION ENGINES</subject><subject>CONTROLLING COMBUSTION ENGINES</subject><subject>ENGINEERING ELEMENTS AND UNITS</subject><subject>GEARING</subject><subject>GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS</subject><subject>HEATING</subject><subject>HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS</subject><subject>LIGHTING</subject><subject>MECHANICAL ENGINEERING</subject><subject>THERMAL INSULATION IN GENERAL</subject><subject>WEAPONS</subject><fulltext>true</fulltext><rsrctype>patent</rsrctype><creationdate>2022</creationdate><recordtype>patent</recordtype><sourceid>EVB</sourceid><recordid>eNrjZLBxzs8rKcrPUUhJLctMTlVIzEtRSIYK5aaWZOSnKKTlFykklpbk5yaWZCYrlBQl5hXnZhYXZ-bn8TCwpiXmFKfyQmluBkU31xBnD93Ugvz41OKCxOTUvNSSeGc_Q0MTY0tDA3MjR2Ni1AAAEPowOQ</recordid><startdate>20220422</startdate><enddate>20220422</enddate><creator>AMANO NORIHIRA</creator><creator>HAMANO MASAHIRO</creator><scope>EVB</scope></search><sort><creationdate>20220422</creationdate><title>Control device and control method for automatic transmission</title><author>AMANO NORIHIRA ; HAMANO MASAHIRO</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-epo_espacenet_CN114391072A3</frbrgroupid><rsrctype>patents</rsrctype><prefilter>patents</prefilter><language>chi ; eng</language><creationdate>2022</creationdate><topic>BLASTING</topic><topic>COMBUSTION ENGINES</topic><topic>CONTROLLING COMBUSTION ENGINES</topic><topic>ENGINEERING ELEMENTS AND UNITS</topic><topic>GEARING</topic><topic>GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS</topic><topic>HEATING</topic><topic>HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS</topic><topic>LIGHTING</topic><topic>MECHANICAL ENGINEERING</topic><topic>THERMAL INSULATION IN GENERAL</topic><topic>WEAPONS</topic><toplevel>online_resources</toplevel><creatorcontrib>AMANO NORIHIRA</creatorcontrib><creatorcontrib>HAMANO MASAHIRO</creatorcontrib><collection>esp@cenet</collection></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext_linktorsrc</fulltext></delivery><addata><au>AMANO NORIHIRA</au><au>HAMANO MASAHIRO</au><format>patent</format><genre>patent</genre><ristype>GEN</ristype><title>Control device and control method for automatic transmission</title><date>2022-04-22</date><risdate>2022</risdate><abstract>The transmission control unit has a gear ratio abnormality determination unit and a limp home control unit. The gear ratio abnormality determination unit determines that the gear ratio is abnormal when a difference between an actual gear ratio calculated from a transmission input shaft rotational speed and a transmission output shaft rotational speed and a set gear ratio in the predetermined gear stage is equal to or greater than a set value during traveling on the basis of the predetermined gear stage. When the gear ratio abnormality determination unit determines that the gear ratio is abnormal, the limp home control unit outputs a release instruction for releasing all of the plurality of friction elements, and when the transition to the neutral state is confirmed by the output of the release instruction, the limp home control unit controls the limp home. On the basis of rotation/stop information of a rotating member included in the gear train, engagement/release of a specific friction element among the plur</abstract><oa>free_for_read</oa></addata></record> |
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| language | chi ; eng |
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| subjects | BLASTING COMBUSTION ENGINES CONTROLLING COMBUSTION ENGINES ENGINEERING ELEMENTS AND UNITS GEARING GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS HEATING HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS LIGHTING MECHANICAL ENGINEERING THERMAL INSULATION IN GENERAL WEAPONS |
| title | Control device and control method for automatic transmission |
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