Hydraulic brake system

Abstract

A hydraulic brake system for vehicles with a brake pressure generator unit which is operable by introducing an actuating force by way of an actuating device that includes a first hydraulic chamber having a volume which decreases when the brake pressure generator unit is actuated, out of which pressure fluid volume is displaced due to the volume decrease and to which wheel brakes are connected by way of a first hydraulic connection, wherein a pump is arranged which is capable of delivering the pressure fluid volume displaced out of the first hydraulic chamber due to the volume decrease into the wheel brakes. The first hydraulic chamber includes an elastic device by which a force/travel characteristic curve is determined in the actuating device when an actuating force is introduced.

1 - 10 . (canceled)  
   
   
       11 . Hydraulic brake system, comprising: 
 a brake pressure generator unit which is operable by introducing an actuating force by way of an actuating device, wherein said brake pressure generator includes a first hydraulic chamber having a volume which decreases when the brake pressure generator unit is actuated, out of which a pressure fluid volume is displaced due to the volume decrease and to which wheel brakes are connected by way of a first hydraulic connection,    a pump coupled to said first hydraulic chamber for delivering the pressure fluid volume into said set of wheel brakes, wherein said pressure fluid volume is displaced out of the first hydraulic chamber due to the volume decrease, and wherein the first hydraulic chamber includes an elastic device disposed therein, wherein said elastic device defines force versus travel characteristics in the actuating device when said actuating force is introduced,    wherein the brake pressure generator unit includes a tandem master brake cylinder with two hydraulic master brake cylinder chambers, one master brake cylinder chamber thereof being connected by way of a hydraulic line to a second piston chamber in which the elastic device can be acted upon by pressure force by means of a separating piston.    
   
   
       12 . Brake system as claimed in  claim 11 , wherein the pump is configured as a bidirectional pump.  
   
   
       13 . Brake system as claimed in  claim 11 , wherein a second hydraulic connection is disposed between the first hydraulic chamber and the wheel brakes and houses a control valve.  
   
   
       14 . Brake system as claimed in  claim 11 , the brake system further including a second hydraulic connection disposed between the first hydraulic chamber and the set of wheel brakes and houses a control valve, and further including a non-return valve which is operable by the difference in pressure between the first hydraulic chamber and the wheel brakes and which opens the second hydraulic connection when excess pressure prevails in the first hydraulic chamber.  
   
   
       15 . Brake system as claimed in  claim 11 , the brake system further including a second hydraulic connection disposed between the first hydraulic chamber and the set of wheel brakes and houses a control valve, wherein the control valve is designed as a part of a hydraulic-mechanical position follow-up controller, wherein the valve position of this hydraulic-mechanical position follow-up controller is variable due to a deformation of the elastic means.  
   
   
       16 . Brake system as claimed in  claim 11 , wherein a third hydraulic connection accommodating a second valve is provided between the first hydraulic chamber and a pressure fluid supply reservoir.  
   
   
       17 . Brake system as claimed in  claim 11 , wherein the brake pressure generator unit further includes a tandem master brake cylinder with two hydraulic master brake cylinder chambers, one master brake cylinder chamber thereof being connected by way of a hydraulic line to a second piston chamber, wherein the elastic device that is arranged in the first hydraulic chamber can be acted upon by pressure force by means of a separating piston, wherein a ninth hydraulic line is included which is closed by way of separating valves, each one electromagnetically operable, normally closed valves, and permits a return flow of pressure fluid from the wheel brakes into the pressure fluid supply reservoir, by way of a master brake cylinder chamber, in one operating position.  
   
   
       18 . Brake system as claimed in  claim 11 , the brake system further comprising a second hydraulic connection is disposed between the first hydraulic chamber and the wheel brakes and houses a control valve, wherein the control valve is an analog valve.