Abstract: The present invention relates to a device for brake pressure control in hydraulic brake systems of vehicles, wherein at least one measuring data emitter for the relative movement between the actuating device and the abutment or for the pedal force introduced into the simulator spring, one measuring data emitter for the position of a brake piston, and one measuring data emitter for the pressure in the brake circuit or between the control valve and the housing, wherein the hydraulic pressure fluid which flows from the pressure supply device by way of the control valve is exclusively fed into a chamber of the housing where it urges the abutment to bear against the stop, on the one hand, and applies pressure to at least one brake piston.

Abstract: The present invention relates to a brake force booster with a panic braking function for automotive vehicles. The present invention includes that the first sealing seat arranged movably in relation to the control housing wherein the sealing seat is fixed to a lever such that when a predetermined relative displacement between valve piston and control housing is exceeded so that the lever prevents at least a movement of the sealing seat in the actuating direction. The brake force booster with a brake assist function is easy to manufacture and, in addition, ensures a controllability of the brake force in the emergency braking position.

Abstract: The present invention relates to a brake-power transmission device, especially for motor vehicles, including an actuated input member, an output member to exert a boosting force, especially on a main brake cylinder, and a control valve arranged in a control housing to regulate the boosting force. An axially movable pressure piece is provided in the area of a reaction member. The pressure piece is supported on the input member or the control housing, thereby permitting changes to be made in the power transmission ratio. There is a general need to provide a brake-power transmission device that enables increased boosting only when required and that allows for mechanical sensing of the brake actuation speed so that immediate maximum boost force can be exerted when required without any time delay.

Abstract: The brake force booster 1 with panic brake function includes a control valve, which is arranged in a control housing and operable by way of an input member, for controlling the boosting pressure in a working chamber, the said control valve including an atmosphere sealing seat on a valve piston and a vacuum sealing seat which is arranged on a sliding sleeve that is axially slidably mounted in the control housing. In the event of a panic braking, a quick depression of the brake pedal causes advance movement of the valve piston connected to the input member in relation to the control housing and the sliding sleeve, whereby opening of the atmosphere sealing seat is initiated and a clutch device is actuated which leads to supporting the sliding sleeve in the brake actuation direction on the elastically deformable reaction member, to which latter both the mechanically generated brake force and the pneumatic boosting force is applied. The clutch device is released by withdrawal of the input member.

Abstract: The present invention relates to an arrangement for actuating an automotive vehicle brake system of the type ‘brake-by-wire’, which comprises an actuating pedal and a travel simulator which cooperates with the brake pedal and whose simulator piston is in a force-transmitting connection with the actuating pedal and is preloaded by a spring, and which includes means of attenuating the movement of the simulator piston as a function of the actuating pedal travel. To achieve an effective attenuation, according to the present invention, the simulator piston (11) delimits a hydraulic chamber (12) which is connected to a second hydraulic chamber (4 or 14, respectively) by way of at least one variable flow resistance (16,17,18,19,20).

Abstract: A braking pressure boosting device is suggested, in particular for automotive vehicles, which includes a boost sensor for sensing or identifying the point of maximum boosting of the braking pressure boosting device. By using the boost sensor, ad signal is generated reporting the point of maximum boosting. This invention permits the manufacture of high-performance braking force boosting devices requiring minimal space and opens up new potential for economizing.

Abstract: An electronically controllable brake actuation system for automotive vehicles includes a simulator interacting with the master brake cylinder, a pressure source drivable by an electronic control unit and by which wheel brakes of the vehicle are pressurizable, the wheel brakes being connectable to the master brake cylinder by at least one hydraulic connection that is closable by separating valves, a device for the identification of the driver's wish for deceleration, each one inlet and outlet valve connected upstream of the wheel brakes, and wheel sensors sensing the rotational behavior of the vehicle wheels. To improve the meterability of braking pressure of a system of the above type, especially in the range of low pressure values, the pressure source is configured as at least one continuously adjustable piston-and-cylinder assembly having a pressure chamber which is connectable to the master brake cylinder and the wheel brakes.

Abstract: The present invention relates to a combined service and parking brake system, especially for automotive vehicles, which includes a hydraulically clampable combined service and parking brake with a mechanical locking device. The mechanical locking device is electrically operable and thus satisfies in a simple fashion the parking function of the hydraulically clamped combined service and parking brake.

Abstract: A multi-way pressure control valve for an electromagnetically actuatable multi-way control valve for slip-controlled hydraulic automotive vehicle brake systems, for providing a flow connection between at least one wheel brake and a high-pressure source or a low-pressure accumulator.

Abstract: The present invention discloses a magnetic valve for liquid and gaseous working media, in particular for hydraulic brake systems in automotive vehicles, which includes a first cylindrical housing part that is encompassed on its outside by a magnetic coil and has a cylindrical recess inside which extends in an axial direction to accommodate and guide an axmature, a tappet which is displaceable by the armature in an axial direction in opposition to a resetting spring, a second cylindrical housing part which is arranged coaxially to the first housing part and includes a cylindrical recess extending in an axial direction, the said recess being in connection to outside valve ports and in which a valve seat cooperating with the tappet is arranged.

Abstract: The present invention relates to a hydraulic brake system for automotive vehicles operable by independent force which includes a master brake cylinder preceded by a hydraulic brake force booster that has a booster piston and a working chamber to which an auxiliary pressure source is connectable, wherein a valve device operable by way of an electromagnetic drive is provided which establishes a hydraulic connection between the working chamber and an unpressurized pressure fluid supply reservoir in a first switching position and a connection between the working chamber and the auxiliary pressure source in a second switching position. To ensure low-noise operation of the brake system and a sensitively controlled volume delivery of the pressure fluid, the valve device is provided with a slide valve (20) of analog operation.

Abstract: This invention relates to a multidirectional valve, in particular for wheel-slip-controlled and/or automatic-brake-intervention-equipped hydraulic brake systems of automotive vehicles, which includes a seat valve member disposed axially movably within a valve housing as well as a valve slide movable relative to the seat valve member within the valve housing, with the valve slide connecting one or a plurality of pressure medium consumers (wheel brakes) alternatively to a pressure medium source (braking pressure generator) or to a pressure medium collector (low pressure reservoir) The valve slide is mechanically coupled with the seat valve member.

Abstract: A hydraulic controllable vibration absorber for an automotive vehicle has a power cylinder that is divided a vibration absorber piston into a first power chamber, which is configurated above the vibration absorber piston, and a second power chamber, which is configurated beneath the vibration absorber piston. These configurations allow both chambers to be brought into connection with a balancing chamber. The vibration absorber is equipped with a sensor arrangement which affords a recognition of the direction of movement of the vibration absorber piston. The sensor arrangement is inserted between the second power chamber and the balancing chamber.

Abstract: A controllable valve arrangement for controlling two-tube vibration absorbers comprises a power cylinder with an interior space subdivided into a first and a second power chambers by virtue of a slidable piston, and with a balancing chamber partly filled with oil. A valve body is actuated by an electromagnetical transducer and prestressed by a spring. The valve body influences a hydraulic connection through which a unidirectional flow is passed. In a traction stage, a unidirectional flow exists between the first power chamber, on one hand, and the second power chamber jointly with the balancing chamber, on the other hand. In a thrust stage, a unidirectional flow exists between the first power chamber jointly with the second power chamber, on one hand, and the balancing chamber, on the other hand.

Abstract: A controllable hydraulic vibration absorber is disclosed whose power cylinder and a tube defines a connecting duct which affords a balance of volume between both power chambers of the vibration absorber and a balancing chamber which is formed between the tube and an external tube disposed coaxially with it. The controllable vibration absorber valve affords variations of the vibration absorbing power and allows a flow through it in one direction only and is arranged between the connecting duct and the balancing chamber so as to be integrated as to its action in a valve assembly which is constituted by a non-return valve and by a switching valve. The switching valve is inserted between the second power chamber and the connecting duct.

Abstract: A controllable hydraulic vibration absorber is disclosed whose power cylinder and a tube defines a connecting duct which affords a balance of volume between both power chambers of the vibration absorber and a balancing chamber which is formed between the tube and an external tube disposed coaxially with it. The controllable vibration absorber valve affords variations of the vibration absorbing power and allows a flow through it in one direction only and is arranged between the connecting duct and the balancing chamber so as to be integrated as to its action in a valve assembly which is constituted by a non-return valve and by a switching valve. The switching valve is inserted between the second power chamber and the connecting duct.