To suppress an incongruity which is generated at a driver due to a gear change shock at a gear change of a mechanical stepped gear change part, in an automatic transmission for a vehicle having an electrical stepless gear change part and the mechanical stepped gear change part.SOLUTION: Since a gear change command output of a simulative gear stage is retarded so that the gear change control of the simulative gear stage and the gear change control of an AT gear stage of a mechanical stepped gear change part are synchronously performed at a synchronous gear change at which both the control are overlapped on each other, gear changes of both the control are synchronously performed irrespective of a difference between gear change response times tri, trm (times t4 to t5), an incongruity generated by a gear change shock or the like is suppressed, and drivability is improved. Also, when the simulative gear stage is up-gear changed, a gear change command for dividedly gear-changing the simulative gear stage to an intermediate simulative gear stage (third speed) is outputted, and precedingly up-gear changed up to the intermediate simulative gear stage (times t1 to t3), the lowering timing of an engine rotational speed ωe is thus accelerated, and a high-remaining feeling of the engine rotational speed ωe and the deterioration of fuel economy are suppressed.SELECTED DRAWING: Figure 12
【課題】電気式無段変速部および機械式有段変速部を有する車両用自動変速機において、機械式有段変速部の変速時に変速ショックなどで運転者に生じさせる違和感を抑制する。【解決手段】電気式無段変速部による模擬ギヤ段の変速制御が機械式有段変速部によるATギヤ段の変速制御と重なる同時変速時に、両者の変速が同期して行なわれるように模擬ギヤ段の変速指令出力が遅延させられるため、変速応答時間tri、trmの相違に拘らず両者の変速が同期して行なわれるようになり(時間t4〜t5)、変速ショック等による違和感が抑制されてドラビリが向上する。また、模擬ギヤ段をアップ変速させる際に、中間模擬ギヤ段(3速)へ分割して変速する変速指令が出力され、中間模擬ギヤ段まで先行してアップ変速するため(時間t1〜t3)、エンジン回転速度ωe の低下タイミングが早くなり、エンジン回転速度ωe の高止まり感や燃費悪化が抑制される。【選択図】図12
GEAR CHANGE CONTROL DEVICE OF AUTOMATIC TRANSMISSION FOR VEHICLE
車両用自動変速機の変速制御装置
14.03.2019
Patent
Elektronische Ressource
Japanisch
IPC: | F16H Getriebe , GEARING / B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen / B60W CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION , Gemeinsame Steuerung oder Regelung von Fahrzeug-Unteraggregaten verschiedenen Typs oder verschiedener Funktion |
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