PROBLEM TO BE SOLVED: To increase brake liquid pressure of brake liquid in a wheel brake by an intended pressure increase rate.SOLUTION: A vehicular brake liquid pressure control device comprises: a normally-open type proportional solenoid valve (inlet valve 1) interposed to a liquid pressure passage from a liquid pressure source to plural wheel brakes; a normally-closed type solenoid valve (outlet valve 2) interposed to a liquid pressure passage from the wheel brakes to a reservoir; and a control part 100 for executing pressure increase control for increasing the brake liquid pressure of the brake liquid in the wheel brakes by controlling the normally-open type proportional solenoid valve and normally-closed type solenoid valve. The control part 100 comprises: pressure increase amount setting means 111 for setting a pressure increase amount of the brake liquid pressure of the brake liquid in the wheel brakes for unit time; differential pressure calculation means 103 for calculating differential pressure of upper and lower flows of the normally-open type proportional solenoid valve; and drive current setting means 113 for setting drive current of the normally-open type proportional solenoid valve. The drive current setting means 113 sets the drive current using a preset map or function, which are preset for associating the pressure increase amount, differential pressure, and drive current.
【課題】車輪ブレーキ内のブレーキ液圧を意図した増圧レートで増圧することを目的とする。【解決手段】車両用ブレーキ液圧制御装置は、液圧源から複数の車輪ブレーキへの液圧路に介装された常開型比例電磁弁(入口弁1)と、車輪ブレーキからリザーバへの液圧路に介装された常閉型電磁弁(出口弁2)と、常開型比例電磁弁および常閉型電磁弁を制御して車輪ブレーキ内のブレーキ液圧を増圧する増圧制御を実行可能な制御部100とを有する。制御部100は、車輪ブレーキ内のブレーキ液圧の単位時間当たりの増圧量を設定する増圧量設定手段111と、常開型比例電磁弁の上下流の差圧を算出する差圧算出手段103と、常開型比例電磁弁の駆動電流を設定する駆動電流設定手段113と、を備える。駆動電流設定手段113は、増圧量と差圧と駆動電流とを関連付けるために予め設定されたマップまたは関数を用いて駆動電流を設定する。【選択図】図3
VEHICULAR BRAKE LIQUID PRESSURE CONTROL DEVICE
車両用ブレーキ液圧制御装置
2015-10-22
Patent
Electronic Resource
Japanese
IPC: | B60T Bremsanlagen für Fahrzeuge oder Teile davon , VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF |
European Patent Office | 2018
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