| 摘要 |
A vehicle braking system including an anti-lock braking system or a traction assist braking system, or both, operatively coupled therewith. The system includes a hydraulic reciprocateably driveable dual-piston type pump (10). The pump (10) is enclosed in a housing (12) having a cavity (32). The system further includes a motor (29) having an output driveshaft (27). The driveshaft (27) has a cam (28) for continuously engaging and driving the pump (10) on demand. The cam (28) extends into the cavity (32), and the cavity (32) is filled with a viscous fluid. The viscous fluid dampens out noise that is generated by power transferal inefficiencies when the motor (29) drives the pump piston (24) under load. |
