| 摘要 |
PURPOSE: Structure for a brake booster of a vehicle is provided to improve responsiveness and pedal feeling, and to reduce braking distance by increasing the braking force in stepping on a brake pedal. CONSTITUTION: A brake booster is composed of a cylinder(3) filled with fluid(1) and installed in a first plunger(118-1) between an input rod and a spring(120), and a piston(5) changing the speed in sliding in the cylinder according to speed of the input rod. A second plunger(118-2) is placed between the spring and a reaction disk, and integrally connected to the piston to actuate the second plunger against the first plunger with regular stroke. Responsiveness is improved, and braking distance is reduced with increasing braking force.
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