PROBLEM TO BE SOLVED: To avoid the generation of instantaneous acceleration even if a brake pedal is released when traveling downhill at backing in a state that a vehicle is decelerated in speed by the pedal-in of the brake pedal.SOLUTION: When it is detected that a select lever is set in a reverse range, target deceleration is calculated from a difference between an actual vehicle speed and a target vehicle speed (S21), final target deceleration is calculated by processing the target deceleration at primary-delay filter-time constant (S22), the set fluid pressure (command fluid pressure) of brake fluid pressure which is necessary for braking a main brake 26a in order to obtain the final target deceleration is calculated (S23, S26 and S27), a drive signal corresponding to the command fluid pressure is transmitted to a brake drive part 12, and the main brake 26a is braked. Since the command fluid pressure is not cancelled even in a state that the brake pedal is pedaled in, instantaneous acceleration is not generated even if the brake pedal is released.SELECTED DRAWING: Figure 5

    【課題】ブレーキペダルの踏込みにより車両を減速させた状態で坂道を後進で降坂している際に、ブレーキペダルを開放しても一瞬の加速が発生しないようにする。【解決手段】セレクトレバーがリバースレンジにセットされていることを検出すると、実車速と目標車速との差分から目標減速度を算出し(S21)、この目標減速度を一次遅れのフィルタ時定数処理して最終目標減速度を算出し(S22)、この最終目標減速度とするために主ブレーキ26aを制動動作させるに必要なブレーキ液圧の設定液圧(指示液圧)を算出し(S23,S26,S27)、この指示液圧に対応する駆動信号をブレーキ駆動部12へ送信して、主ブレーキ26aを制動動作させる。指示液圧はブレーキペダルが踏込まれている状態でもキャンセルされないので、ブレーキペダルを開放しても一瞬の加速が発生することはない。【選択図】図5


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    Title :

    BACKING SPEED CONTROL DEVICE OF VEHICLE


    Additional title:

    車両の後進速度制限装置


    Contributors:

    Publication date :

    2017-11-16


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Japanese


    Classification :

    IPC:    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 / B60T Bremsanlagen für Fahrzeuge oder Teile davon , VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF / F02D CONTROLLING COMBUSTION ENGINES , Steuern oder Regeln von Brennkraftmaschinen




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