FORCE INCREASING DEVICE OF VEHICLE BOOSTER

摘要

The present invention relates to a negative pressure boosting apparatus of an automobile brake booster, and more particularly, to a brake booster of an automobile which generates negative pressure by using the suction pressure of an intake cylinder by the intake movement of an engine and increases the braking force of the brake by the negative pressure. A throttle valve configured to control an amount of air sucked into the intake cylinder from the outside, and a vacuum tank generating negative pressure by maintaining the inside in a vacuum state using the suction pressure of the intake cylinder, An actuator that selectively provides negative pressure to the brake booster, and when the driver operates the brake operation means, applies a control signal to the throttle valve to cut off the air sucked into the intake cylinder from the outside, while in the vacuum tank. Control signal for providing the generated negative pressure to the brake booster To provide a negative pressure booster of the vehicle, characterized in that the brake booster is configured to control to be applied to the actuator, it is possible to improve the braking force of the vehicle.