Abstract:
The invention relates to a sensor unit (5) comprising at least one magnetic field sensor (6), at least one application specific integrated circuit (ASIC) (7) and at least one magnet (9) arranged on at least one lead frame (24). All elements are arranged in a capsule housing (20) that is surrounded by a sensor extrusion coating (18). The aim of the invention is to provide said type of sensor unit that has smaller dimensions and that can be accurately positioned in the extrusion coating tool in a simple manner. According to the invention, said capsule housing (20) has a plurality of fixing aids (22), the outer dimensions thereof being adapted to an injection mould associated with the sensor extrusion coating (18).
Abstract:
According to an embodiment of the invention, a receiver is selected by a control unit from a stored quantity of receivers for the transmission of an emergency call to a vehicle. The selected receiver is thereby contacted directly. The receiver is further the particular organization that provides direct assistance for the emergency call.
Abstract:
The invention relates to a hydraulic vehicle brake system which has a brake pressure supply device (1). Said brake pressure supply device (1) can be connected to wheel brakes of the vehicle via at least one hydraulic line and substantially consists of a master brake cylinder (3) and a hydraulic booster (4) mounted upstream thereof. Said booster has a return chamber (19) and a booster chamber (18), a working piston (12) arranged therein and a control piston (21). The working piston (12) is actively connected to a master brake cylinder piston via an actuating element (13) in the direction of power output. The booster (4) can be impinged upon with a hydraulic pressure of a hydraulic pressure source (7) for the purpose of boosting the braking power, an outlet (9) of the booster (4) being connectible to a reservoir (8). The invention is characterized in that the control piston (21) comprises a plate-shaped actuating piston (24) arranged thereon, which cooperates with the working piston (12). The control piston (21) is guided inside the working piston (12) in such a manner that, when the booster (4) is actuated, a two-step reduction of the volume flow between the booster chamber (18) and the return chamber (19) is enabled to build up pressure in the booster chamber (18).
Abstract:
The invention relates to a method for measuring out the admission pressure in a first infinitely variable, electromagnetically actuated hydraulic valve (2, 2') to precisely control the pressure in a pressure circuit (13). According to said method, the admission pressure on the first valve can be adjusted via the delivery rate of a motor pump unit (1, 1') which is connected to the first valve via a pressure line (13) on the pump outlet side, especially in a hydraulic braking system of a motor vehicle. The admission pressure is adjusted by electronically evaluating the plunger reaction of the first valve (2, 2') or of an additional hydraulic valve (3, 3') that is also electromagnetically actuated and connected to the pressure line (13) on the pump outlet side. The invention also relates to an electronically controlled automotive brake pressure control device for carrying out said method.
Abstract:
The invention relates to a servo brake for a brake-by-wire-type motor vehicle brake system. Said servo brake can be actuated by means of a brake pedal and an electronic control unit in accordance with the driver's wishes and independently of the driver's intentions. The brake pedal is coupled to an input member of the servo brake by means of a piston rod head having longitudinal guiding openings in such a way that the brake pedal can be moved to a limited extent relative to the input member, thus ensuring that the force-transmitting connection between the brake pedal and the input member is canceled especially in the brake-by-wire mode of operation. In order to make it easier to mount the brake pedal in the interior of the motor vehicle, especially to couple the brake pedal to the input member of the servo brake, the piston rod head (8) is designed as a U-shaped bent part which embraces the brake pedal (4).
Abstract:
Disclosed is a transmission and/or reception circuit arrangement (12, 21, 21') for physically creating a motor vehicle data bus system as well as the use thereof. Said circuit features several configurable modes of operation representing a different physical implementation of one or more logic states and comprises electronic bit generation and/or bit reception circuit elements (1, 2, 3, 4, 22, 22', 25, 25') that are used in each mode of operation. Switching and/or structural means (11, 13, 14, 15, 16, 19, 19', 20, 20', 20") are provided which allow the circuit arrangement to be switched between the modes of operation and/or be operated in different modes of operation.
Abstract:
The invention relates to a combined operating and parking brake, comprising a disc brake for the operating braking and a drum brake of the Duo-Servo type for the parking braking, whereby the drum brake has an expander device to bring two brake shoes into engagement with the brake drum. The disc brake and the drum brake are hydraulically-operated. A locking device is also provided which holds the expander device in a first position, during operating braking, in which the brake shoes are held off the brake drum and in a second position, during a parking braking process, with the brake shoes engaged with the brake drum.
Abstract:
The invention relates to a clocked switching mode power supply element comprising at least one coil for producing at least two different output voltages from a voltage source, wherein the inventive power supply element comprises a common coil, a switching unit and respectively a power storage device(4.5, 4.6) for each producible output voltage (V4.5, V4.6,...), the switching unit (7) is connected to the coil (4.1) in such a way that it is at least temporarily time-deferred from one power storage device(4.5, 4.6) in such a way that said power storage devices (4.5, 4.6) are charged with the differently defined output voltages (V4.5, V4.6). The energy storage device is preferably permanently connected to the coil or is provided with a reference point capacitor which is permanently connected to said coil and a switch control unit synchronised with reversing switch points.
Abstract:
The invention concerns a device for analyzing an integrated system (9) comprising at least one CPU card (1), at least one CPU bus (2) and at least one memory (3). Said device comprises a communication module (4) for inputting and editing analysis data using a test interface (5) provided with at least one group of data lines additionally to the control lines. The words containing data and addresses are transmitted alternately or in any succession using the test interface. Thus, it is possible to detect errors while using few CPU card cycles.
Abstract:
The inventive actuating unit for an electromechanical disc brake for a motor vehicle comprises a lever arrangement (3) placed between an actuating electric motor and a friction lining (4) of said disc brake. Said lever arrangement consists of a first lever (10) mounted at a level of a hinge point (A or 40) in a stationary manner with respect to a brake calliper (1), and a second lever (20) connected to an actuating element (7) by a driving force. Said actuating element is connected to the friction lining with the aid of an adjusting device (30) which is used for compensating the wear-out of the friction linings (4, 5). In order to reduce to a minimum the power demand of the electrical power drive system and the energy demand of the brake along the life service thereof, the adjusting device (30) is constructed in such a way that the efficient transmission range of the lever arrangement (10, 20) is carried into effect by modifying a deviation (A-C) between the hinge point (A or 40) and a force application point (C or 60) of the adjustment unit (30) to the actuating unit (7), the operating air gap between the friction lining (4, 5) and the brake pad (6) being maintained permanent.