PROBLEM TO BE SOLVED: To provide a torque control device of a four-wheel drive vehicle which can stably output torque which is minimally necessary for starting the vehicle to sub-drive side wheels in a road situation that main drive wheels are stuck in a free roller state, and in a similar road situation.SOLUTION: When it is determined that front wheels Wf1, Wf2 are stuck in a free roller state, current command rear torque TrCMD is raised stepwise. Then, when a brake is operated in a state that four wheels are stopped after the command rear torque TrCMD is raised stepwise, the command rear torque TrCMD is released. Then, when a state that the command rear torque TrCMD is continued for a second threshold time T2, the command rear torque TrCMD is applied stepwise.SELECTED DRAWING: Figure 4

    【課題】主駆動輪がフリーローラー状態でスタックする路面状況又はそれと同等な路面状況において、車両の発進に最低限必要なトルクを副駆動輪側に安定して出力することが可能な四輪駆動車両のトルク制御装置を提供する。【解決手段】前輪Wf1,Wf2がフリーローラー状態でスタックしていると判断されるとき、現在の指令リアトルクTrCMDをステップ状に引き上げるようにする。そして、指令トルクTrCMDがステップ状に引き上げられた後で、4輪が停止した状態でブレーキが作動されるとき、指令リアトルクTrCMDを開放するようにする。そして、指令リアトルクTrCMDが開放されている状態が第2閾値時間T2継続するとき、指令リアトルクTrCMDをステップ状にかけるようにする。【選択図】図4


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    Title :

    TORQUE CONTROL DEVICE OF FOUR-WHEEL DRIVE VEHICLE


    Additional title:

    四輪駆動車両のトルク制御装置


    Contributors:

    Publication date :

    2018-03-08


    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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