UPSHIFT CONTROL DEVICE OF AUTOMATIC TRANSMISSION
To improve gear change performance by suppressing the insufficiency of a capacity of a fastening clutch at a start of an inertia phase when automatic upshift by the acceleration of a vehicle speed is performed.SOLUTION: In an upshift control device of an automatic transmission, an AT-controller has...
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creator | IWAMOTO YASUHIRO OTA YOSHIHIKO |
description | To improve gear change performance by suppressing the insufficiency of a capacity of a fastening clutch at a start of an inertia phase when automatic upshift by the acceleration of a vehicle speed is performed.SOLUTION: In an upshift control device of an automatic transmission, an AT-controller has an upshift gear change progress processing part for performing pressure relief control and pressure application control when an upshift requirement is an automatic upshift requirement by the acceleration of a vehicle speed while maintaining a prescribed accelerator opening. When entering a torque phase, the upshift gear change progress processing part performs pressure application control for outputting fastening indication pressure for gradually raising fastening clutch torque. When the fastening clutch torque reaches a value lower than input torque by a prescribed amount, the upshift gear change progress processing part lowers an upper limit value of output torque from an engine stepwise toward the input torque, and after that, starts pre-torque down control for outputting a torque-down indication for gradually lowering the upper limit value. When a start of the inertia phase is detected, the upshift gear change progress processing part finishes the pre-torque down control.SELECTED DRAWING: Figure 5
【課題】車速上昇によるオートアップシフトが実行される際、イナーシャフェーズの開始時における締結クラッチの容量過不足を抑えて変速性能の向上を達成する。【解決手段】自動変速機のアップシフト制御装置において、ATコントローラは、所定のアクセル開度を保ったままでの車速上昇によるオートアップシフトの要求であるとき、抜き圧制御と入れ圧制御を行うアップシフト変速進行処理部を有する。アップシフト変速進行処理部は、トルクフェーズに入ると、締結クラッチトルクを徐々に上昇させる締結指示圧を出力する入れ圧制御を実行する。締結クラッチトルクが入力トルクより所定量低い値に到達すると、エンジンからの出力トルクの上限値を入力トルクに向かってステップ的に低下させた後、徐々に低下させるトルクダウン指示を出力するプリトルクダウン制御を開始する。イナーシャフェーズの開始が検知されると、プリトルクダウン制御を終了する。【選択図】図5 |
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【課題】車速上昇によるオートアップシフトが実行される際、イナーシャフェーズの開始時における締結クラッチの容量過不足を抑えて変速性能の向上を達成する。【解決手段】自動変速機のアップシフト制御装置において、ATコントローラは、所定のアクセル開度を保ったままでの車速上昇によるオートアップシフトの要求であるとき、抜き圧制御と入れ圧制御を行うアップシフト変速進行処理部を有する。アップシフト変速進行処理部は、トルクフェーズに入ると、締結クラッチトルクを徐々に上昇させる締結指示圧を出力する入れ圧制御を実行する。締結クラッチトルクが入力トルクより所定量低い値に到達すると、エンジンからの出力トルクの上限値を入力トルクに向かってステップ的に低下させた後、徐々に低下させるトルクダウン指示を出力するプリトルクダウン制御を開始する。イナーシャフェーズの開始が検知されると、プリトルクダウン制御を終了する。【選択図】図5</description><language>eng ; jpn</language><subject>BLASTING ; CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE ORDIFFERENT FUNCTION ; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES ; ENGINEERING ELEMENTS AND UNITS ; GEARING ; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS ; HEATING ; LIGHTING ; MECHANICAL ENGINEERING ; PERFORMING OPERATIONS ; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TOTHE CONTROL OF A PARTICULAR SUB-UNIT ; THERMAL INSULATION IN GENERAL ; TRANSPORTING ; VEHICLES IN GENERAL ; WEAPONS</subject><creationdate>2019</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=20190919&DB=EPODOC&CC=JP&NR=2019158086A$$EHTML$$P50$$Gepo$$Hfree_for_read</linktohtml><link.rule.ids>230,308,776,881,25542,76290</link.rule.ids><linktorsrc>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=20190919&DB=EPODOC&CC=JP&NR=2019158086A$$EView_record_in_European_Patent_Office$$FView_record_in_$$GEuropean_Patent_Office$$Hfree_for_read</linktorsrc></links><search><creatorcontrib>IWAMOTO YASUHIRO</creatorcontrib><creatorcontrib>OTA YOSHIHIKO</creatorcontrib><title>UPSHIFT CONTROL DEVICE OF AUTOMATIC TRANSMISSION</title><description>To improve gear change performance by suppressing the insufficiency of a capacity of a fastening clutch at a start of an inertia phase when automatic upshift by the acceleration of a vehicle speed is performed.SOLUTION: In an upshift control device of an automatic transmission, an AT-controller has an upshift gear change progress processing part for performing pressure relief control and pressure application control when an upshift requirement is an automatic upshift requirement by the acceleration of a vehicle speed while maintaining a prescribed accelerator opening. When entering a torque phase, the upshift gear change progress processing part performs pressure application control for outputting fastening indication pressure for gradually raising fastening clutch torque. When the fastening clutch torque reaches a value lower than input torque by a prescribed amount, the upshift gear change progress processing part lowers an upper limit value of output torque from an engine stepwise toward the input torque, and after that, starts pre-torque down control for outputting a torque-down indication for gradually lowering the upper limit value. When a start of the inertia phase is detected, the upshift gear change progress processing part finishes the pre-torque down control.SELECTED DRAWING: Figure 5
【課題】車速上昇によるオートアップシフトが実行される際、イナーシャフェーズの開始時における締結クラッチの容量過不足を抑えて変速性能の向上を達成する。【解決手段】自動変速機のアップシフト制御装置において、ATコントローラは、所定のアクセル開度を保ったままでの車速上昇によるオートアップシフトの要求であるとき、抜き圧制御と入れ圧制御を行うアップシフト変速進行処理部を有する。アップシフト変速進行処理部は、トルクフェーズに入ると、締結クラッチトルクを徐々に上昇させる締結指示圧を出力する入れ圧制御を実行する。締結クラッチトルクが入力トルクより所定量低い値に到達すると、エンジンからの出力トルクの上限値を入力トルクに向かってステップ的に低下させた後、徐々に低下させるトルクダウン指示を出力するプリトルクダウン制御を開始する。イナーシャフェーズの開始が検知されると、プリトルクダウン制御を終了する。【選択図】図5</description><subject>BLASTING</subject><subject>CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE ORDIFFERENT FUNCTION</subject><subject>CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES</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>LIGHTING</subject><subject>MECHANICAL ENGINEERING</subject><subject>PERFORMING OPERATIONS</subject><subject>ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TOTHE CONTROL OF A PARTICULAR SUB-UNIT</subject><subject>THERMAL INSULATION IN GENERAL</subject><subject>TRANSPORTING</subject><subject>VEHICLES IN GENERAL</subject><subject>WEAPONS</subject><fulltext>true</fulltext><rsrctype>patent</rsrctype><creationdate>2019</creationdate><recordtype>patent</recordtype><sourceid>EVB</sourceid><recordid>eNrjZDAIDQj28HQLUXD29wsJ8vdRcHEN83R2VfB3U3AMDfH3dQzxdFYICXL0C_b1DA729PfjYWBNS8wpTuWF0twMSm6uIc4euqkF-fGpxQWJyal5qSXxXgFGBoaWhqYWBhZmjsZEKQIAmi8nFQ</recordid><startdate>20190919</startdate><enddate>20190919</enddate><creator>IWAMOTO YASUHIRO</creator><creator>OTA YOSHIHIKO</creator><scope>EVB</scope></search><sort><creationdate>20190919</creationdate><title>UPSHIFT CONTROL DEVICE OF AUTOMATIC TRANSMISSION</title><author>IWAMOTO YASUHIRO ; OTA YOSHIHIKO</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-epo_espacenet_JP2019158086A3</frbrgroupid><rsrctype>patents</rsrctype><prefilter>patents</prefilter><language>eng ; jpn</language><creationdate>2019</creationdate><topic>BLASTING</topic><topic>CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE ORDIFFERENT FUNCTION</topic><topic>CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES</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>LIGHTING</topic><topic>MECHANICAL ENGINEERING</topic><topic>PERFORMING OPERATIONS</topic><topic>ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TOTHE CONTROL OF A PARTICULAR SUB-UNIT</topic><topic>THERMAL INSULATION IN GENERAL</topic><topic>TRANSPORTING</topic><topic>VEHICLES IN GENERAL</topic><topic>WEAPONS</topic><toplevel>online_resources</toplevel><creatorcontrib>IWAMOTO YASUHIRO</creatorcontrib><creatorcontrib>OTA YOSHIHIKO</creatorcontrib><collection>esp@cenet</collection></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext_linktorsrc</fulltext></delivery><addata><au>IWAMOTO YASUHIRO</au><au>OTA YOSHIHIKO</au><format>patent</format><genre>patent</genre><ristype>GEN</ristype><title>UPSHIFT CONTROL DEVICE OF AUTOMATIC TRANSMISSION</title><date>2019-09-19</date><risdate>2019</risdate><abstract>To improve gear change performance by suppressing the insufficiency of a capacity of a fastening clutch at a start of an inertia phase when automatic upshift by the acceleration of a vehicle speed is performed.SOLUTION: In an upshift control device of an automatic transmission, an AT-controller has an upshift gear change progress processing part for performing pressure relief control and pressure application control when an upshift requirement is an automatic upshift requirement by the acceleration of a vehicle speed while maintaining a prescribed accelerator opening. When entering a torque phase, the upshift gear change progress processing part performs pressure application control for outputting fastening indication pressure for gradually raising fastening clutch torque. When the fastening clutch torque reaches a value lower than input torque by a prescribed amount, the upshift gear change progress processing part lowers an upper limit value of output torque from an engine stepwise toward the input torque, and after that, starts pre-torque down control for outputting a torque-down indication for gradually lowering the upper limit value. When a start of the inertia phase is detected, the upshift gear change progress processing part finishes the pre-torque down control.SELECTED DRAWING: Figure 5
【課題】車速上昇によるオートアップシフトが実行される際、イナーシャフェーズの開始時における締結クラッチの容量過不足を抑えて変速性能の向上を達成する。【解決手段】自動変速機のアップシフト制御装置において、ATコントローラは、所定のアクセル開度を保ったままでの車速上昇によるオートアップシフトの要求であるとき、抜き圧制御と入れ圧制御を行うアップシフト変速進行処理部を有する。アップシフト変速進行処理部は、トルクフェーズに入ると、締結クラッチトルクを徐々に上昇させる締結指示圧を出力する入れ圧制御を実行する。締結クラッチトルクが入力トルクより所定量低い値に到達すると、エンジンからの出力トルクの上限値を入力トルクに向かってステップ的に低下させた後、徐々に低下させるトルクダウン指示を出力するプリトルクダウン制御を開始する。イナーシャフェーズの開始が検知されると、プリトルクダウン制御を終了する。【選択図】図5</abstract><oa>free_for_read</oa></addata></record> |
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subjects | BLASTING CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE ORDIFFERENT FUNCTION CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES ENGINEERING ELEMENTS AND UNITS GEARING GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS HEATING LIGHTING MECHANICAL ENGINEERING PERFORMING OPERATIONS ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TOTHE CONTROL OF A PARTICULAR SUB-UNIT THERMAL INSULATION IN GENERAL TRANSPORTING VEHICLES IN GENERAL WEAPONS |
title | UPSHIFT CONTROL DEVICE OF AUTOMATIC TRANSMISSION |
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