Abstract: An integrated microprocessor system for safety-critical control systems, comprising at least two microprocessor system modules each comprising at least one processor core, a read/write memory and a memory protection unit, and a read-only memory which is jointly assigned to the processor cores of the microprocessor system modules. Each of the microprocessor system modules executes a main program and a monitoring program which may comprise a plurality of subprograms. If the memory protection unit detects unauthorized operations by one of the programs for accessing a separate address area (A, B) of another program, then the respective memory protection unit assigns a separate address area (A, B) of the read/write memory to the main program and to the monitoring program.

Abstract: Disclosed is a device for influencing the driving dynamics of a vehicle with an electronic brake system. The device includes a brake actuator for adjusting a brake torque at least one wheel brake of the vehicle. The brake torque can be determined in a torque distributing device according to a yaw torque requirement. A first control unit can be activated in the presence of a critical driving condition as is used to determine a first yaw torque requirement due to driving dynamics control. A management device (12) has a second control unit, which can be activated in the presence of a subcritical driving condition, and a second yaw torque requirement (R:D_GM) can be determined by the second control unit due to driving dynamics control, and the second yaw torque requirement (R:D_GM) can be sent to the torque distributing device (20), and an activated state of the first control unit a signal (I:EBS_Status; R: D_GM; R:[S1, S2, . . .

Abstract: Disclosed is a device for influencing the driving dynamics of a vehicle with an electronic brake system. The device includes a brake actuator for adjusting a brake torque at least one wheel brake of the vehicle. The brake torque can be determined in a torque distributing device according to a yaw torque requirement. A first control unit can be activated in the presence of a critical driving condition as is used to determine a first yaw torque requirement due to driving dynamics control. A management device (12) has a second control unit, which can be activated in the presence of a subcritical driving condition, and a second yaw torque requirement (R:D_GM) can be determined by the second control unit due to driving dynamics control, and the second yaw torque requirement (R:D_GM) can be sent to the torque distributing device (20), and an activated state of the first control unit a signal (I:EBS_Status; R: D_GM; R:[S1, S2, . . .

Abstract: An integrated microprocessor system for safety-critical control systems, comprising at least two microprocessor system modules each comprising at least one processor core, a read/write memory and a memory protection unit, and a read-only memory which is jointly assigned to the processor cores of the microprocessor system modules. Each of the microprocessor system modules executes a main program and a monitoring program which may comprise a plurality of subprograms. If the memory protection unit detects unauthorized operations by one of the programs for accessing a separate address area (A, B) of another program, then the respective memory protection unit assigns a separate address area (A, B) of the read/write memory to the main program and to the monitoring program.

Abstract: A device for the regulation of driving dynamics of a vehicle with an electronic regulator unit and a valve block. The electronic regulator unit is constructed as a support base for attaching the valve block to the vehicle chassis.

Abstract: Disclosed is a brake system for a motor vehicle having actuating unit (1) consisting of a brake booster (2) operable by a brake pedal (5) and actuatable independently of the driver's. A master brake cylinder (3) connected downstream of the brake booster (3), to which master brake cylinder wheel brakes (13, 14, 15, 16) of a motor vehicle are connected, an element (21) to detect a deceleration request of the driver, a hydraulic control unit (HCU) (17) for performing driving-dynamics related control operations (ABS, ESP, TCS . . . ), which is connected between the master brake cylinder (3) and the wheel brakes (13, 14, 15, 16) and includes at least one hydraulic pump (24a, b), a first electronic control unit (7) which is associated with the actuating unit (1) and serves to actuate the brake booster (2), a second electronic control unit (12) which is associated with the hydraulic control unit (HCU) (17) and serves to drive the components thereof.

Abstract: In a method of operating a microprocessor system provided with safety functions, which comprises two or more processor cores (1, 2) and periphery elements (5, 7) on a common chip carrier, to which the cores can have access for write or read operations, a distinction is made between algorithms for safety-critical functions and algorithms for comfort functions. Further, a microprocessor system appropriate for implementing the method, and the use of the same, has process cores connected to periphery elements (5,6,7,8,9,10) by way of bus systems (3, 4), and bus driver circuits (19) can transmit bus information from one bus to another with the provision of at least one address comparator (18).

Abstract: In a method for actuating an electrically actuatable parking brake system, the brake torque on the braked wheels is reduced in order to prevent the wheels braked by the parking brake from locking when the vehicle is traveling at a vehicle speed exceeding a predetermined minimum speed and the wheel slip exceeds a defined threshold.

Abstract: In a method of operating a microprocessor system provided with safety functions, which comprises two or more processor cores (1, 2) and periphery elements (5, 7) on a common chip carrier, to which the cores can have access for write or read operations, a distinction is made between algorithms for safety-critical functions and algorithms for comfort functions. Further, a microprocessor system appropriate for implementing the method, and the use of the same, has process cores connected to periphery elements (5,6,7,8,9,10) by way of bus systems (3, 4), and bus driver circuits (19) can transmit bus information from one bus to another with the provision of at least one address comparator (18).

Abstract: The present invention describes an electronic circuit arrangement with a motor vehicle control adapted to be activated by a current/voltage supply, wherein the motor vehicle control or the current/voltage supply for the motor vehicle control is connected to an activation unit for the independent activation of the motor vehicle control, and the motor vehicle control can be switched on or off by the activation unit, and it also describes the use thereof for the control and/or monitoring of electronic or electrohydraulic brake systems. Also described is a system wherein leakage of a pressure reservoir is monitored and the pressure reservoir is replenished by means of a filling device as soon as the pressure drops below a defined limit value during the temporally limited activation.

Abstract: The present invention relates to a device for controlling electromagnetically operable valves of an electrohydraulic brake system for motor vehicles of the ‘brake-by-wire’ type having an electronic control or regulation unit that comprises at least one valve driver stage. In order to ensure maximum possible availability of the electronically controlled system functions, especially with a view to achieving a short stopping distance and a sufficient degree of vehicle stability regardless of the vehicle type or of whether the vehicle is loaded or unloaded, according to the present invention, the control and regulation unit includes two additional valve driver stages associated with which is a first and a second group of valves, the said driver stages being used to disable the first or the second group when malfunction occurs.

Abstract: The invention discloses methods and control systems for controlling an electronically controllable brake actuating system for automotive vehicles, with a depressurized pressure medium supply reservoir, with at least one pressure source which can be controlled by an electronic control unit. The pressure source is used to apply pressure to the wheel brakes of the vehicle, with pressure sensors and pressure control valves being associated with the wheel brakes. The pressure control valves are controllable in an analog manner by means of an electric variable in dependence on the differential pressure applied to them.

Abstract: A microprocessor system for safety-critical control operations includes at least three central units which are preferably located jointly on one chip and execute the same program. Further, there is provision of read-only memories and random-access memories with additional memory locations for test data, input and output units and comparators which check the output signals of the central units for correlation. The central units are interconnected by way of bus systems and bypasses which enable the central units to jointly read and process the existing data, including the test data and commands, according to the same program. The central units are extended by redundant periphery units into two complete control signal circuits and are interconnected in such a manner that, upon failure, the faulty central unit is identified by a majority decision and an emergency operation function is maintained.

Abstract: A method for operating a multi-cylinder internal combustion engine having gas exchange valves which are variably adjustable with respect to the valve opening characteristics either directly electromagnetically or by way of an electrohydraulic valve actuation system which includes several electromagnetic valves. For adaptation of all gas exchange valves to a desired valve opening characteristics, the electromagnetic valves are operated cylinder-selectively in the operation of the internal combustion engine by means of variable actuating voltages and/or actuating currents.

Abstract: In a method for operating an electronically adjustable brake actuation system for motor vehicles comprising a de-pressurized hydraulic fluid reservoir (4), a pressure source (20) that can be controlled by means of an electronic control unit (31) and whose pressure is adapted to be applied to wheel brakes (6, 7; 13, 14) of the vehicle, a device (2, 32, S1) for identifying the deceleration requested by the driver, as well as valve devices (8, 10, 11, 16, 17, 18, 19, 26, 27) connected upstream of the wheel brakes (6, 7; 13, 14), the wheel brakes (6, 7; 13, 14) are connectable alternatively to the pressure source (20) or to the pressure fluid reservoir (4).

Abstract: The invention discloses methods and control systems for controlling an electronically controllable brake actuating system for automotive vehicles, with a depressurized pressure medium supply reservoir (4), with at least one pressure source (20) which can be controlled by an electronic control unit (32), said pressure source being used to apply pressure to the wheel brakes (7,8,9,10) of the vehicle, with pressure sensors and pressure control valves (inlet valve 17,18; outlet valve 27,28) being associated with said wheel brakes, said pressure control valves being controllable in an analog manner by means of an electric variable in dependence on the differential pressure applied to them and connecting the wheel brakes (7-10) to the pressure source (20) in a pressure increase phase, being closed or becoming closed in a pressure maintenance phase and connecting the wheel brakes (7-10) to the pressure medium supply reservoir (4) in a pressure reduction phase.

Abstract: The present invention relates to methods for controlling an electrohydraulic brake system which represent types of emergency braking operating modes being actuated when various malfunctions occur, such as a malfunction caused by a mechanical fault of one of the pressure control valves, of a pressure sensor used to determine the wheel brake pressures, a high-pressure accumulator serving a an auxiliary-pressure source or a pump cooperating with the high-pressure accumulator, a separating valve closing the connections between the wheel brakes and an emergency pressure generator or master brake cylinder as well as when a loss in pressure occurs in any of the wheel brakes associated with the front or the rear axle.

Abstract: The present invention relates to an electrohydraulic brake system for motor vehicles which is controllable in a ‘brake-by-wire’ mode of operation by the vehicle operator as well as irrespective of the vehicle operator, is operated preferably in the brake-by-wire mode of operation, and can be operated in a fallback mode of operation in which only operation by the vehicle operator is possible.

Abstract: The present invention relates to a device for controlling electromagnetically operable valves of an electrohydraulic brake system for motor vehicles of the ‘brake-by-wire’ type having an electronic control or regulation unit that comprises at least one valve driver stage.

Abstract: The present invention relates to an actuating travel simulator for a vehicle actuating unit, preferably a brake pedal, which simulator includes a hydraulic simulator piston in a hydraulic simulator chamber containing a hydraulic fluid, said simulator being characterized in that the simulator chamber includes at least one opening through which fluid is discharged from or supplied to the simulator chamber when the vehicle actuating unit is actuated, and that an adjusting means is provided to control the fluid volume discharged from the simulator chamber and/or supplied to the simulator chamber in such a way that a defined force-travel characteristic curve of the actuating unit is produced.