CONTROLLER OF POWER TRANSMISSION DEVICE FOR VEHICLE

To attain suitable gear stage switching of an auxiliary transmission.SOLUTION: An electronic control unit 50 engages two of friction engaging elements provided in an automatic transmission 30 in a neutral range. Also, when the electronic control unit 50 starts gear stage switching of an auxiliary tr...

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Bibliographische Detailangaben
Hauptverfasser:	AONO YUSUKE, HIURA NAOKI
Format:	Patent
Sprache:	eng ; jpn
Schlagworte:	BLASTING ENGINEERING ELEMENTS AND UNITS GEARING GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS HEATING LIGHTING MECHANICAL ENGINEERING THERMAL INSULATION IN GENERAL WEAPONS
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Beschreibung
Zusammenfassung:	To attain suitable gear stage switching of an auxiliary transmission.SOLUTION: An electronic control unit 50 engages two of friction engaging elements provided in an automatic transmission 30 in a neutral range. Also, when the electronic control unit 50 starts gear stage switching of an auxiliary transmission 41 from a low speed side gear stage to a high speed side gear stage in the neutral range, the electronic control unit disengages one of the above two friction engaging elements that engage during the neutral range, and when it determines that the gear stage switching is completed, it re-engages the friction engaging elements having been disengaged.SELECTED DRAWING: Figure 1 【課題】好適な副変速機のギア段切替を実現する。【解決手段】電子制御ユニット５０は、ニュートラルレンジ時には、自動変速機３０に設けられた摩擦係合要素のうちの２つを係合している。また、電子制御ユニット５０は、ニュートラルレンジでの低速側ギア段から高速側ギア段への副変速機４１のギア段切替を開始する際に、ニュートラルレンジ時に係合する上記２つの摩擦係合要素のうちの一つの係合を解除するとともに、ギア段切替が完了したと判定したときに、その係合を解除した摩擦係合要素を再係合している。【選択図】図１