| 摘要 |
The brake force regulator of this invention provides for genuine dual circuit control so that in the event of failure of one of the intact brake circuits, control of the other can be continued at an increased switching point pressure. The brake force regulator of this invention includes a pair of axially displaceable stepped pistons which make fluid connections to both brake circuits in the same manner. A control chamber is defined by both stepped pistons on the one hand and a control piston to which is applied to control force on the other. A fluid connection is provided between thecontrol chamber and the brake circuit controlled by each stepped piston which is opened when the control piston approaches either of the stepped pistons. The faces of the stepped pistons to which is applied the pressure in the control chamber is smaller than the face of the control piston upon which the pressure in the control chamber acts in the opposite direction. When both brake circuits are intact, the control force is reduced since it acts on the stepped pistons in the opening direction of the brake force regulators by a predetermined hydraulic transmission ratio between the control piston and the stepped pistons. |
