VEHICULAR CONTROL DEVICE

• Main Authors: ITAYAMA ATSUSHI, OZAWA KOJI, NAKADA TAKAHIRO, NISHIKAWA KAZUHISA
• Format: Patent
• Language: English; Japanese
• Published: 11.11.2022
• Subjects: CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE ORDIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; PERFORMING OPERATIONS; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TOTHE CONTROL OF A PARTICULAR SUB-UNIT; TRANSPORTING; VEHICLES IN GENERAL

To provide a vehicular control device that can determine whether low gear shift is executed or not executed, without using a sensor for determining a road surface gradient.SOLUTION: When a vehicle speed is over a set speed (S11:YES), a throttle full-close instruction is output. When the throttle full-close instruction is output (S12:YES), it is determined whether estimated time of reaching an inflection point or more has elapsed since the throttle full-close instruction is output or not (Step S13). The estimated time of reaching the inflection point is set to a delay time during which output of an engine starts to decrease due to full close of an electronic throttle valve after the throttle full-close instruction is output. At a time point after the estimated time of reaching the inflection point or more has elapsed, when acceleration of a vehicle is equal to or above 0 (S14:YES), it is determined that execution of low gear shift is decided (S15), and when the acceleration of the vehicle is less than 0 (S14:NO), it is determined that non-execution of the low gear shift is decided (S16).SELECTED DRAWING: Figure 2 【課題】路面勾配判定のセンサを用いずに、ロー変速の実施／不実施を判定できる、車両用制御装置を提供する。【解決手段】車速が設定車速を超過した場合（Ｓ１１：ＹＥＳ）、スロットル全閉指示が出力される。スロットル全閉指示が出力されると（Ｓ１２：ＹＥＳ）、そのスロットル全閉指示の出力時から変曲点到達推定時間以上が経過したか否かが判断される（ステップＳ１３）。変曲点到達推定時間は、スロットル全閉指示の出力から電子スロットルバルブの全閉によりエンジンの出力が低減し始めるまでの遅れ時間に設定される。変曲点到達推定時間以上が経過した時点において、車両の加速度が０以上である場合（Ｓ１４：ＹＥＳ）、ロー変速の実施が決定され（Ｓ１５）、車両の加速度が０未満である場合（Ｓ１４：ＮＯ）、ロー変速の不実施が決定される（Ｓ１６）。【選択図】図２