| 摘要 |
An antilock brake system for an automotive vehicle having a master brake cylinder and wheel brakes hydraulically connected to the master brake cylinder during normal vehicle braking including a power cylinder having an adjustable piston, an electric motor connected drivably to the piston through a selectively enagageable electromagnetic clutch, a solenoid operated valve situated in fluid communication with the wheel brakes and adapted to connect the master brake cylinder to the wheel brakes for a normal braking action and for isolating the master cylinder from the wheel brakes and connecting the wheel brakes to the power cylinder for antilock cycling of the wheel brakes, and an electronic controller and wheel speed sensors for detecting wheel slip whereby the controller triggers the operation of the solenoid valve to isolate the master cylinder from the brakes and to dump pressurized fluid from the brakes when a threshold wheel slip is detected, the clutch being disengaged during the pressure dumping stage of the antilock brake cycle as the motor drive circuit is closed whereby kinetic energy stored in a rotating motor armature may be used in a subsequent brake reapply stage of the antilock brake cycle. |
