To shorten the time required for a vehicle having a function for following a preceding vehicle to reach the deceleration that satisfies the deceleration request when an automatic brake is applied, as well as, to prevent uncomfortable deceleration due to a fuel supply cut prior to reach the deceleration.SOLUTION: When a target deceleration exceeds a threshold value Ta due to deceleration of a preceding vehicle or the like, a follow-travel controller performs deceleration control (main deceleration control) to make an actual inter-vehicle distance from the preceding vehicle equal to or less than the target inter-vehicle distance. Further, before the main deceleration control and when acceleration becomes unnecessary, the follow-travel controller performs preliminary deceleration control at a deceleration smaller than that of the main deceleration control, and prohibits stoppage of fuel supply. As a result, the wheel cylinders can be pressurized before the main deceleration control, to enable time required until reaching the target deceleration to be shortened. Furthermore, it becomes possible to prevent uncomfortable deceleration caused by cutting off the fuel supply before the main deceleration control.SELECTED DRAWING: Figure 6
【課題】先行車に追従する機能を有する車両において、自動ブレーキ作動時に減速要求に応じた減速度になるまでの時間を短縮するとともに、当該減速度になる前の燃料供給カットによる不快な減速を防止する。【解決手段】追従走行制御装置は、先行車の減速などで目標減速度が閾値Taを超えたときに、先行車との実車間距離を目標車間距離にすべく減速制御(本減速制御)を行う。また、本減速制御の前であって加速が不要になったときに本減速制御よりも小さい減速度にて事前の減速制御を行うとともに、燃料供給の停止を禁止する。これにより、本減速制御の前にホイールシリンダに与圧ができ、目標減速度になるまでの時間を短縮できる。さらに、本減速制御前の燃料供給カットによる不快な減速を防止できる。【選択図】図6
FOLLOW-TRAVEL CONTROLLER
追従走行制御装置
2022-08-24
Patent
Electronic Resource
Japanese
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 / G08G Anlagen zur Steuerung, Regelung oder Überwachung des Verkehrs , TRAFFIC CONTROL SYSTEMS |
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