| 摘要 |
An electronic control hydraulic brake system for a hybrid electric vehicle is provided to improve pedal feeling without noise and vibration of a hydraulic motor and a pump by opening a first normal close type cut valve between first and second hydraulic lines and pumping brake oil from a reservoir. An electronic control hydraulic brake system for a hybrid electric vehicle comprises a master cylinder(10), a reservoir(20), a plurality of hydraulic pumps(40), a hydraulic motor(30), normal open type cut valves(CUT-OFF1,CUT-OFF2), normal open type inlet valves(INLET1,INLET2,INLET3,INLET4), first and second normal close type valves(50,60), a high pressure accumulator(70), first, second, third, and fourth hydraulic lines(A,B,C,D), and a control part(80). The normal open type cut valves are arranged between the master cylinder and an outlet of the hydraulic pump. The normal open type inlet valves are arranged at inlets of wheel cylinders respectively. The first and second normal close type valves are arranged to adjust hydraulic pressure of the wheels. The high pressure accumulator stores brake oil which is pumped by the hydraulic pumps. |
