Abstract: A brake caliper formed without machining for a spot-type disc brake, in which the brake caliper after subsequent machining forms a floating caliper, has a braking force generator (12) and an opposite-lying abutment (22). For the non-machining forming of the brake caliper (10) two mould parts (34, 36) each partially receiving the brake caliper (10) are used, in which support surfaces (Q1, Q2, Q3, Q4, Q5) and action surfaces (S1/2, S3, S4, S5) are formed on the brake caliper (10) in such a way that the brake caliper (10) for the subsequent machining is supportable by its support surfaces (Q1, Q2, Q3, Q4, Q5) in a defined manner and clampable by means of clamping forces acting upon its action surfaces (S1/2, S3, S4, S5). To keep the extent of the subsequent machining to a minimum, during the non-machining forming the abutment (22) and the support surfaces (Q1, Q2, Q3, Q4, Q5) of the brake caliper (10) are formed in one and the same mould part (34).

Abstract: The motor/pump unit (10) comprises an electric motor (12) and at least one pump (14) for delivering brake fluid. The electric motor (12) has a stator (16), in which a rotor (18) is rotatably disposed. The pump (14) is disposed substantially inside the rotor (18) and is drivable by the latter. In order to provide a particularly compact energy source for the vehicle brake system, there is disposed adjacent to the motor/pump unit (10) at least one aggregate (23), which is drivable with the aid of the rotor (18).

Abstract: The invention concerns a method and a system for identifying tires of a vehicle, tire pressures of the tires of the vehicle being measured and analysed for the driving-dynamic states of the vehicle with the use of parameters which indicate the driving-dynamic states. Individual tires of the vehicle are unambiguously identified on the basis of the analysis of the measured tire pressures or their variations.

Abstract: Vehicle stability regulating system for land vehicles, with a yaw rate sensor (GRS) which during operation delivers a first output signal (GR) representative of the yaw rate of the vehicle and a second output signal (Temp) representative of the operating or ambient temperature of the yaw rate sensor (GRS), and an additional sensor arrangement (SENS), which delivers a third output signal (0-GR) representing a non-yawing state of the vehicle, at least within a predetermined range of tolerance, wherein the first, the second and the third output signal are fed into an electronic control unit (ECU), and wherein the electronic control unit (ECU) comprises a computer unit (CPU) and at least one writable data memory (RAM) and a control program memory (ROM), which is connected to the computer unit, wherein a control program stored in the control program memory controls the computer unit so that in a learning mode the computer unit determines a temperature-related zero offset value from the first output signal in accor

Abstract: A vacuum brake booster comprises a vacuum chamber and a working chamber which is separated in a pressure-tight manner from the latter by a mobile wall. In order to obtain a pressure difference at the mobile wall, a control valve is provided which comprises a housing coupled in a force-transmitting manner to the mobile wall and a first valve seat, which is disposed in the housing and which, in co-operation with a first valve sealing member, controls the supply of atmospheric pressure or overpressure to the working chamber in response to the displacement of an input member, which is coupled to the first valve seat, of the brake booster in order to obtain a pressure difference at the mobile wall. The first valve seat is formed at a displaceable valve member which is coupled to the input member in the actuating direction of the brake booster.

Abstract: A vacuum brake booster (1) has a vacuum chamber (4) and a working chamber (3), which are separated from one another in a pressure-proof manner by a movable wall (5). A control valve (6), which has a housing (7) workingly coupled to the movable wall (5), has a valve seat (10), which is disposed in the housing (7) and which in dependence upon the displacement of an input element (8) may control the supply of at least atmospheric pressure to the working chamber (3) in order to achieve a pressure difference at the movable wall (5). For improved braking force assistance during emergency braking operations, an armature (18) cooperating with a permanent magnet (19) is provided in the control valve housing (7) and coupled in actuating direction to the actuating element (8). The armature (18) is spring-biased counter to actuating direction and, in the normal position of the control valve (6), is held at a first distance from the permanent magnet (19).

Abstract: The motor/pump unit (10) comprises an electromotor (12) and at least one pump (14) for delivering brake fluid. The electromotor (12) has a motor stator (16) in which a motor rotor (18) is rotatably disposed. The pump (14) is disposed substantially within the motor rotor (18) and can be driven by the latter. In order to provide a vehicle brake system with a motor/pump unit (10) which is capable of delivering brake fluid in a highly dynamic fashion, the motor stator (16) and at least one section (22) of the motor rotor (18) which is directed towards the motor stator (16) define an electromagnetic region (16, 22, 24), and at least the pump (14) defines a hydraulic region (14, 26), wherein at least one sealing element (28, 96, 98) is provided which separates the electromagnetic region (16, 22, 24) from the hydraulic region (14, 26) in a fluid-tight fashion.

Abstract: A vehicle brake system having a gas pressure accumulator, which comprises a housing, the interior of which is divided by metal bellows and a disk fastened to the metal bellows in gas-tight manner, into a gas-filled gas chamber and a fluid chamber, wherein via a feed line a fluid may be supplied under pressure to and removed from the fluid chamber, and provided between the fluid chamber and the feed line is a valve arrangement which closes when the pressure in the feed line drops below a minimum value and opens when the pressure exceeds the minimum value, wherein the metal bellows during supply and removal of the fluid executes a stroke motion by means of which the valve arrangement is actuated.

Abstract: The pumping set comprises an electric motor (10), the output shaft (12) of which is drivingly connected to a piston pump arrangement (14) for delivering hydraulic fluid. To prevent hydraulic fluid, which escapes at the piston pump arrangement (14) during operation, from passing into the interior (39) of the electric motor (10), a collecting region (30) is provided, which is connected to a storage chamber (36) in order to receive hydraulic fluid therein.

Abstract: A vehicle brake system has a gas pressure accumulator (10) comprising a housing (12), the interior of which is divided by metal bellows (16) into a gas-sensed gas chamber (20) and a fluid chamber (22). Via a feed line (24) a fluid may be supplied under pressure to and removed from the fluid chamber (22), wherein provided between the fluid chamber (22) and the feed line (24) is a valve arrangement (74), which closes when the pressure in the feed line (24) drops below a minimum value and opens when the pressure exceeds the minimum value. To increase the operational reliability of the gas pressure accumulator (10), the valve arrangement (74) closes when the pressure in the feed line (24) exceeds a maximum value and opens when the pressure drops below the maximum value.

Abstract: A method and a system for recongnizing both a driving-dynamic state of a vehicle and a surface quality of the carriageway of which the vehicle is moving. The pressures of the tires of the vehicle are measured and evaluated so that conclusions can be draw on both current driving-dynamic states and existing surface qualities of the carriageway.

Abstract: Actuator unit for a hydraulic vehicle brake system, with a master brake cylinder in which a first piston, which can be displaced by an actuator, is disposed, a first brake circuit which can be connected by a valve arrangement in a basic position to the master brake cylinder or separated from the latter thereby in an actuating position, and a device which can be connected to a hydraulic chamber of the master brake cylinder to simulate the brake pedal behaviour, wherein a second piston is disposed in a displaceable manner in the master brake cylinder, wherein the displacement of one piston causes the displacement of the other piston, wherein the device for simulating the brake pedal behaviour is switched to an active or inactive mode through the displacement.

Abstract: An anti-locking brake system for traction control and vehicle dynamics control such that a pump for actuating a wheel brake removes brake fluid from a brake pressure generating unit and supplies it to the wheel brake. Disposed between the brake pressure generating unit and an input connection of the pump is a valve arrangement in the form of a 2-connection/3-position valve, which in a non-actuated (normal) position blocks the connection between the brake pressure generating unit and the input connection of the pump. In a first actuating position the valve arrangement establishes a secondary flow connection between the brake pressure generating unit and the input connection of the pump, and in a second actuating position establishes a primary flow connection between the brake pressure generating unit and the input connection of the pump. The primary flow connection has a larger flow cross section than the secondary flow connection.

Abstract: An actuation unit for an electronically controlled hydraulic vehicle braking system, comprising a brake booster which can be actuated by a brake pedal and which comprises a master cylinder and a reservoir for hydraulic fluid, a first brake which is coupled with at least a first vehicle wheel and which is connectable with the master cylinder via an electronically controlled valve arrangement in a basic position or, in an actuation position is disconnectable from same, a brake pedal behaviour simulator which is connectable with the master cylinder and comprises a spring arrangement adapted to act against the hydraulic pressure from the master cylinder, and with which a characteristics modeling is associated.

Abstract: An antilock system for a motor vehicle braking system which includes a master cylinder which is connected with a brake fluid reservoir and which can be activated by a brake pedal in order to deliver brake fluid through a connecting line into at least one wheel brake cylinder. The system also includes an electromagnetic valve is arranged in the connecting line between the master cylinder and the wheel brake cylinder in order to establish or to interrupt the connection by an electronic control unit. The system further includes a fluid pump arranged in parallel to the electronic valve in order to remove brake fluid from the wheel brake cylinder, with the fluid pump being operable to deliver fluid in one direction and being shut off to block fluid flow in the other direction.

Abstract: A monitoring circuit for detecting a malfunctioning warning lamp circuit includes a first device for monitoring the voltage within the warning lamp circuit and a second device for monitoring the current through the warning lamp circuit. Each of the monitoring devices has an output which is connected to a decision device. The first device generates a first output signal when the monitored voltage is greater than a predetermined voltage and a second output signal when the monitored voltage is less than the predetermined voltage. The second device generates a first output signal when a current flows through the lamp and a second output signal when there is no current flowing through the lamp. The decision device is responsive to the output signals from the monitoring devices to generate a failure signal when the warning lamp circuit malfunctions.