BRAKING CONTROL DEVICE FOR VEHICLE

• Main Authors: HIRANO TAKUYA, SUGIURA YUSUKE, TSUKAMOTO SHUN
• Format: Patent
• Language: English; Japanese
• Published: 25.01.2024
• Subjects: ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; BLASTING; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; COMBUSTION ENGINES; CONTROLLING COMBUSTION ENGINES; HEATING; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS; LIGHTING; MECHANICAL ENGINEERING; PERFORMING OPERATIONS; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OFVEHICLES; TRANSPORTING; VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES; VEHICLES IN GENERAL; WEAPONS

To suppress uncomfortable feeling of a driver when an internal combustion engine is started in a braking control device applied to a hybrid vehicle.SOLUTION: A braking control device (SC) is applied to a hybrid vehicle including an internal combustion engine (IC) that generates intake negative pressure and a traveling electric motor (MD), and includes: a negative pressure booster (VB) that reduces operating force of a braking operation member (BP) of the vehicle by using intake negative pressure; a negative pressure sensor (PV) that detects booster negative pressure of the negative pressure booster (VB); and a controller (ECU) that requests starting of the internal combustion engine (IC) when the booster negative pressure (Pv) reaches less than a negative pressure threshold value while the internal combustion engine (IC) is in the stopped state. When the braking operation member (BP) is being operated, the controller (ECU) reduces the negative pressure threshold value compared to when the braking operation member (BP) is not being operated.SELECTED DRAWING: Figure 1 【課題】ハイブリッド車に適用される制動制御装置において、内燃機関が起動される際の運転者の違和感を抑制する。【解決手段】制動制御装置（ＳＣ）は、吸気負圧を発生する内燃機関（ＩＣ）、及び、走行用電気モータ（ＭＤ）を備えたハイブリッド型の車両に適用されるものであって、車両の制動操作部材（ＢＰ）の操作力を吸気負圧を利用して軽減する負圧ブースタ（ＶＢ）と、負圧ブースタ（ＶＢ）のブースタ負圧を検出する負圧センサ（ＰＶ）と、内燃機関（ＩＣ）が停止している状態でブースタ負圧（Ｐｖ）が負圧しきい値未満になる場合に内燃機関（ＩＣ）の起動を要求するコントローラ（ＥＣＵ）と、を備える。そして、コントローラ（ＥＣＵ）は、制動操作部材（ＢＰ）が操作されている場合には、制動操作部材（ＢＰ）が操作されていない場合に比較して、負圧しきい値を小さくする。【選択図】図１