초록 ▼

A brake control system for effectively properly performing a braking hydraulic pressure distribution between a front wheel and a rear wheel or a left wheel and a right wheel of a motor vehicle including a master cylinder for generating a hydraulic pressure in response to depression of a brake pedal

A brake control system for effectively properly performing a braking hydraulic pressure distribution between a front wheel and a rear wheel or a left wheel and a right wheel of a motor vehicle including a master cylinder for generating a hydraulic pressure in response to depression of a brake pedal thereof and applying the hydraulic pressure through first and second braking passages to first and second wheel braking cylinders. This brake control system has first and second pressure control devices respectively coupled to a braking pressure source for allowing the output hydraulic pressures to be regulated independently of each other under control of a control unit. The output of the first pressure control device is coupled through the first braking passage to the first wheel braking cylinder and the output of the second pressure control device is coupled through the second braking passage to the second wheel braking cylinder. The control unit determines first and second target braking pressures to the first and second wheel braking cylinders on the basis of the hydraulic pressure in the master cylinder. The determined first and second target braking pressures are respectively corrected on the basis of the vehicle acceleration and wheel slip ratios.

대표청구항 ▼

A brake control system for use in a motor vehicle, comprising: braking means including a master cylinder for generating a pressure in response to a depression of a braking pedal of said motor vehicle and applying the generated pressure through first and second braking passages to first and second wh

A brake control system for use in a motor vehicle, comprising: braking means including a master cylinder for generating a pressure in response to a depression of a braking pedal of said motor vehicle and applying the generated pressure through first and second braking passages to first and second wheel braking cylinders respectively associated with first and second wheels of said motor vehicle, said first braking passage being coupled to said first wheel braking cylinder and said second braking passage being coupled to said second wheel braking cylinder; braking pressure source means for generating a hydraulic pressure independent of said braking means; first and second pressure control means respectively coupled to said braking pressure source means for causing braking pressures to be generated therefrom and for allowing the braking pressures to be regulated independent of each other, said first pressure control means being coupled through said first braking to said first wheel braking cylinder and said second pressure control means being coupled through said second braking passage to said second wheel braking cylinder, said first and second pressure control means being responsive to the pressure from said master cylinder for respectively regulating braking pressures to said first and second wheel braking cylinders as an amount which is magnified by a predetermined amount as compared with the pressure from said master cylinder, by regulation of the pressure from said braking pressure source means; first detection means for detecting a condition of each of said first and second wheels; second detection means for detecting a running condition of said motor vehicle; third detection means for detecting a pressure generated in said master cylinder; fourth detection means for detecting a pressure applied to each of said first and second wheel braking cylinders; target braking pressure setting means connected to said first to third detection means for determining first and second target braking pressures to said first and second wheel braking cylinders in accordance with the conditions of said first and second wheels detected by said first detection means, the running condition of said motor vehicle detected by said second detection means and the master cylinder pressure detected by said third detection means; and control means connected to said target braking pressure setting means for generating first and second control signals to said first and second pressure control means so that the hydraulic pressures in said first and second wheel braking cylinders detected by said fourth detection means are respectively equal to said first and second target braking pressures set in said target braking pressure setting means, said first and second control signals thereto controlling magnification ratios of the pressure from said master cylinder and the pressures to said first and second wheel braking cylinders.