BRAKE CONTROL DEVICE

• Main Authors: UENO KENTARO, SHIGETA JUN, MATSUNAGA KUNIHIRO, KIKAWA MASAYUKI, MATSUZAKI NORIKAZU, FURUYAMA KOJI
• Format: Patent
• Language: English; Japanese
• Published: 16.03.2015
• Subjects: ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; 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

PROBLEM TO BE SOLVED: To suppress a change of an air reaction force when a brake control device is brought into a full-load state without lowering output hydraulic pressure to a pedal operation by a simple structure.SOLUTION: When a drive force of a drive motor 21 reaches a maximum drive force, even if a brake pedal 5 is largely pedaled in at a stop of a vehicle, valve-close commands are outputted to pressure-increase control valves 40, 40' at FL, FR (front wheels 1L, 1R) sides of an ESC 31 from a second ECU 33. By this constitution, hydraulic pressure which is outputted to each wheel side from a master cylinder 8 via the ESC 31 is not supplied to wheel cylinders 3L, 3R at sides of the front wheels 1L, 1R, and supplied to only wheel cylinders 4L, 4R at sides of rear wheels 2L, 2R. A change of hydraulic pressure rigidity at sides of the wheel cylinders 3L, 3R and 4L, 4R is performed by stopping the supply of brake fluids to the wheel cylinder 3L, 3R. 【課題】 ブレーキ制御装置を単純な構造で、ペダル操作に対する出力液圧を低下させることなく、全負荷状態となるときの反力変化を抑制できるようにする。【解決手段】 車両の停車時にブレーキペダル５を大きく踏込み操作した場合でも、駆動モータ２１の駆動力が最大駆動力となったときには、第２のＥＣＵ３３からＥＳＣ３１のＦＬ，ＦＲ（前輪１Ｌ，１Ｒ）側の増圧制御弁４０，４０′に閉弁指令を出力する。これにより、マスタシリンダ８からＥＳＣ３１を通じて各車輪側に向けた液圧は、前輪１Ｌ，１Ｒ側のホイールシリンダ３Ｌ，３Ｒに供給されず、後輪２Ｌ，２Ｒ側のホイールシリンダ４Ｌ，４Ｒだけに供給される。ホイールシリンダ３Ｌ，３Ｒ，４Ｌ，４Ｒ側の液圧剛性の変化は、前記ホイールシリンダ３Ｌ，３Ｒへのブレーキ液供給を停止することにより行われる。【選択図】 図１