PROBLEM TO BE SOLVED: To suppress a shock occurring when disengaging a disconnection state, or quickly disengage the disconnection state depending on a degree of emergency in shifting to a 4-WD travel.SOLUTION: When disengaging a disconnection state, an increase gradient of a propeller shaft rotation speed Np is changed in accordance with a disengagement condition at the time, and therefore, it is possible to change a mode of increase in the propeller shaft rotation speed Np in accordance with the degree of emergency in shifting to a 4-WD travel. Therefore, it is possible to disengage the disconnection state with a shock suppressed by relatively decreasing an increase gradient of the propeller shaft rotation speed Np in the case of a low degree of emergency in shifting to the 4-WD travel, or to disengage the disconnection state quickly with an increase gradient of the propeller shaft rotation speed Np relatively increased in the case of a high degree of emergency in shifting to the 4-WD travel.

    【課題】4WD走行への移行の緊急度に応じて、ディスコネクト状態の解除時のショックを抑制したり、そのディスコネクト状態を素早く解除する。【解決手段】ディスコネクト状態を解除するときは、そのときの解除条件に応じてプロペラシャフト回転速度Npの上昇勾配を変更するので、4WD走行への移行の緊急度に応じてプロペラシャフト回転速度Npの上昇態様を変えることができる。従って、4WD走行への移行が緊急を要しない場合はプロペラシャフト回転速度Npの上昇勾配を相対的に小としてショックを抑制した前記ディスコネクト状態の解除が可能であり、4WD走行への移行が緊急を要する場合はプロペラシャフト回転速度Npの上昇勾配を相対的に大として素早い前記ディスコネクト状態の解除が可能となる。【選択図】図3


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    Title :

    FOUR-WHEEL-DRIVE VEHICULAR CONTROL APPARATUS


    Additional title:

    四輪駆動車両の制御装置


    Contributors:

    Publication date :

    2015-12-07


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Japanese


    Classification :

    IPC:    B60K Anordnung oder Einbau von Antriebseinheiten oder von Kraft- bzw. Drehmomentübertragungen in Fahrzeugen , ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES



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