| 摘要 |
PURPOSE: A controlling method of an oil pressure is provided to prevent the overload of a braking power by reducing a fluid pressure braking power as the regenerative brake force generated in the regenerative braking of a vehicle. CONSTITUTION: A normal open type inlet valve(INLET1,INLET2) is formed in the entrance of each wheel cylinder. A normal close type outlet valve(OUTLET1,OUTLET2) is formed in the exit of each wheel cylinder. A LPA(low pressure accumulator)(LACC) stores a fluid pressure provided from the normal close type outlet valve. A plurality of hydraulic pump(HP1,HP2) supplies a fluid pressure saved in the LPA to each wheel cylinder. A motor operates a plurality of hydraulic pumps.
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