HYDRAULIC BRAKE SYSTEM

• Main Authors: UCHIDA KIYOYUKI, NISHIO AKITAKA, KOMAZAWA MASAAKI, NINOYU MASAKI, MARUYAMA MASAKI, KAMIYA YUSUKE
• Format: Patent
• Language: English; Japanese
• Published: 02.02.2015
• Subjects: ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; BLASTING; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; BRAKES; CLUTCHES; COUPLINGS FOR TRANSMITTING ROTATION; ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS; HEATING; LIGHTING; MECHANICAL ENGINEERING; PERFORMING OPERATIONS; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OFVEHICLES; THERMAL INSULATION IN GENERAL; TRANSPORTING; VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES; VEHICLES IN GENERAL; WEAPONS

PROBLEM TO BE SOLVED: To suppress degradation in accuracy for control over a brake cylinder fluid pressure resulting from oscillation of a fluid pressure in an upstream side portion in response to actuation of a slip controller that is exerting an anti-lock control.SOLUTION: Oscillation of a fluid pressure in an upstream side portion is transferred to a control pressure chamber via a compression piston of a master cylinder and a control piston of a regulator. In relation to this, under an anti-lock control, a booster linear valve and a decompression linear valve are made open, a volume change of the control pressure chamber is permitted, and rigidity is made low. By doing so, the oscillation of the fluid pressure in the control pressure chamber is suppressed and the oscillation of the fluid pressure in a compression chamber is suppressed. As a result, during the anti-lock control, it is possible to suppress the degradation in accuracy for controlling the fluid pressure of a brake cylinder and appropriately avoid an increase in a braking distance. 【課題】アンチロック制御中のスリップ制御装置の作動による上流側部の液圧の振動に起因するブレーキシリンダ液圧の制御精度の低下を抑制する。【解決手段】上流側部の液圧の振動は、マスタシリンダの加圧ピストン、レギュレータの制御ピストンを介して制御圧室に伝達される。それに対して、アンチロック制御中においては、増圧リニア弁、減圧リニア弁が開状態とされ、制御圧室の容積変化が許容され、剛性が低くされる。それにより、制御圧室の液圧の振動が抑制され、前方加圧室の液圧の振動が抑制される。その結果、前方加圧室の液圧を利用して行われるアンチロック制御において、ブレーキシリンダの液圧の制御精度の低下を抑制することができ、制動距離が長くなることを良好に回避することができる。【選択図】図６