VEHICLE BRAKE DEVICE

• Main Authors: DOURA AKIFUMI, SUKO TAKUYA
• Format: Patent
• Language: English; Japanese
• Published: 01.10.2015
• 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 provide a vehicle brake device capable of generating an appropriate friction braking force.SOLUTION: A vehicle brake device comprises: a master cylinder 11 generating a master pressure in response to a driver's control force input to a brake pedal 71, in each of master chambers 10a and 10b; a differential-pressure control valve 536 keeping a wheel cylinder pressure higher than the master pressure by as much as a control differential pressure in response to a current; and a brake ECU (6) calculating a pressurization amount based on a brake stroke and controlling the current supplied to the differential pressure control valve 536 to thereby set the wheel cylinder pressure higher than the master pressure by as much as a pressurization amount if the wheel cylinder pressure is to be set higher than the master pressure, and correcting the pressurization amount on the basis of a reference master pressure that is a master pressure if a controlled variable is within a specified range for specified time and the master pressure detected by a master pressure sensor (539). 【課題】適正な摩擦制動力を発生させることができる車両用制動装置を提供する。【解決手段】ブレーキペダル７１に入力された運転者の操作力に応じたマスタ圧をマスタ室１０ａ、１０ｂに発生させるマスタシリンダ１１と、電流に応じた制御差圧分ホイールシリンダ圧をマスタ圧よりも高い状態に保つ差圧制御弁５３６と、ホイールシリンダ圧をマスタ圧よりも加圧させる場合に、ブレーキストロークに基づいて加圧量を演算し、差圧制御弁５３６に供給される電流を制御することにより、ホイールシリンダ圧をマスタ圧に対して加圧量分加圧させるとともに、操作量が規定時間の間に規定範囲にある場合のマスタ圧である基準マスタ圧及びマスタ圧センサ（５３９）によって検出されたマスタ圧に基づいて、加圧量を補正するブレーキＥＣＵ（６）と、を有する。【選択図】図２