| 摘要 |
PURPOSE: A device for improving a braking performance by using a brake booster is provided to rapidly and exactly return an operating rod, return and pressure springs comprising the brake booster, and completely return a brake pedal, accordingly to improve a manipulating feeling when drivers operate the brake pedal for the next braking, and to increase the braking reaction rate and improve braking performance. CONSTITUTION: A device for improving a braking performance by using a brake booster(10) is composed of a brake pedal sensor(30) detecting the working and functioning displacement of a brake pedal(31), a vacuum pump(40) generating vacuum pressure by using the driving force of an engine, a vacuum control valve(50) connected through the vacuum pump, a static pressure chamber(A) and a transformation chamber(B) of the brake booster, and each vacuum hose(41,42,43), and an ECU(Electronic Control Unit,60) controlling the action of the vacuum control valve to selectively supply vacuum pressure, which is generated by the vacuum pump, to the transformation chamber by applying power to the vacuum control valve according to the signal transmitted from the brake pedal sensor. In additional, the vacuum control valve works to selectively supply vacuum pressure, which is generated by the vacuum pump to the negative pressure of the static pressure chamber, to the static pressure chamber.
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