Patent ID: 6902241
Filing Date: 2005-06-07
Classification: B60T

Abstract:
1. A braking system for an automobile, comprising: four primary brake devices including respective four service brakes provided exclusively to generate respective braking forces to be applied to respective four wheels of the automobile which consist of a front left wheel, a front right wheel, a rear right wheel and a rear left wheel; a plurality of secondary brake devices provided for at least two of said four wheels, respectively, said plurality of secondary brake devices including respective parking brakes disposed in parallel with corresponding ones of said four service brakes and operable to generate respective braking forces to be applied to said at least two of said four wheels, said at least two of said four wheels including one of said front and rear right wheels, and one of said front and rear left wheels, said parking brakes being operable independently of each other; and a controller operable to electrically control said four primary brake devices and said plurality of secondary brake devices such that said parking brakes are not operated during running of the automobile when all of said four primary brake devices are normally operable, and are brought into an operated state after the automobile is stopped, said controller including an emergency brake control portion operable when at least one of said four primary brake devices is defective, to operate at least one of said plurality of secondary brake devices which corresponds to at least one of said at least one defective primary brake device, so that said parking brake corresponding to each of said at least one of said at least one defective primary brake device is placed in said operated state.