Patent ID: 6079799
Filing Date: 2000-06-27
Classification: B60T

Abstract:
A brake system comprisinga brake fluid pressure producing source;a reservoir which holds surplus brake fluid;a plurality of wheel braking force producing devices;main conduits connecting respectively said brake fluid pressure producing source and each of said wheel braking force producing devices, wherein each of said wheel braking force producing devices receives a brake fluid pressure from said brake fluid pressure producing source and produces a braking force in said at least one wheel;a braking control detection device which detects a need for braking control of at least one wheel and produces a control signal to control the supply of brake fluid from said brake fluid pressure producing source to one of said wheel braking force producing devices corresponding to said at least one wheel;a pump device connected to said main conduits;a first conduit connecting said reservoir and said pump device;a second conduit connecting said brake fluid pressure producing source and said pump separately from said main conduits;a first valve device which controls the opening and closing of said first conduit; anda braking control device which, upon receipt of said control signal when the brake fluid pressure of said brake fluid pressure producing source is not substantially produced, opens said first valve device and makes operative said pump device to supply brake fluid through said first conduit to said one of said wheel braking force producing devices, and upon receipt of said control signal when brake fluid pressure of said brake fluid pressure producing source is substantially produced, closing said first valve device and making said pump device operative to supply brake fluid through said second conduit from said brake fluid pressure producing source, in addition to brake fluid primarily supplied through said main conduits from said brake fluid pressure producing source to said one of said wheel braking force producing devices.