Abstract:
The invention relates to the detection and transmission of sensor signals. The signal current is adjusted to a predefined setpoint value at any moment in time and the system used comprises a first signal input (46) for a magnetoresistive rotational speed sensor (7) and a second signal input (33) for a brake-pad wear sensor (19). The signal current (12) branches off (34) and is divided.The voltage is measured by means of a shunt (26) and is converted in the form of additional information into a current intensity level for the signal line (3).
Abstract:
The invention relates to an operating device for a electromechanically actuated disk brake for vehicles, essentially comprising a driving device (1) or an electric motor (11), a rotationally secured actuating device (7), in addition to a reducing gear (2) arranged between the electric motor (11) and the actuating device (7). Said actuating device (7) allows one (4) of two friction linings (4, 5) which are displacably arranged in a caliper (6) to be brought into contact with a disk brake (6). In order to guarantee the testability of the reducing gear, the means (27) for rotationally securing the actuating device ( 7 or 16) are arranged in the gearbox housing containing said reducing gear (2).
Abstract:
The invention relates to a piston pump, in particular for controllable braking systems such as ABS or ESP. The pump is characterized in that a working chamber (40) of said pump is delimited upstream of a piston (3, 52) by a pressure valve. One end of a return spring (4, 51) is supported against a valve seat support (9, 54) of the pressure valve and the other end restores the piston (3, 52) to its lower dead-centre point. Pumps which are to be mass produced should be as inexpensive and easy to assemble as possible. To achieve this, according to the invention, the return spring (4, 51) can also be fixed directly or indirectly to the valve seat support (9, 54).
Abstract:
The invention relates to an actuation device for a motor vehicle. Said device includes a pedal bracket (4) that can be mounted in a fixed manner in the vehicle and a base body (2) articulated thereon that can be fixed and rotated around a first axis by means of a regulating device (7). The body comprises a housing oriented opposite the actuation device (B) in the interior of the motor vehicle for a hydraulic or electromechanical sensor (12) and a pedal lever (1) rotationally articulated on the base body (2) with two arms (8, 9), whereby the first arm (8) is actuated by the force exerted by the foot and the second arm (9) acts upon the sensor (12). The device makes it possible to easily regulate the actuation device with the purpose of adapting to the comfort requirements of different drivers whose height differs (leg length). The device also exhibits optimized crash properties. One additional advantage is that hydraulic sensors can also be mounted in the foot area inside the motor vehicle.
Abstract:
The invention relates to a device for controlling at least one electromechanic operating device in a motor vehicle, whereby the at least one operating device is controlled by means of an accelerator pedal (2), a brake pedal (3) and/or a steering wheel (10). The device comprises in particular an acutating module (1) that can be displaced in a horizonal and/or vertical direction in order to regulate the accelerator pedal (2), brake pedal (3) and/or the steering wheel (10) to the requirements of the driver. A brake pedal motor (17) can be used to drive the brake pedal (7) as a function of a position of the accelerator pedal (2) detected by an accelerator sensor, whereby the accelerator pedal (2) and the brake pedal (3) are, whenever posible, always positioned on a plane relative to the driver. The invention can also affect the characteristic of the brake pedal by means of a motor (17), whereby the former is quasi static. This means that travel-dependent damping of the brake pedal (3) can be avoided. The pedal motor (17) and the steering motor (8) can also send back haptic information on the state of the vehicle.
Abstract:
In brake actuation according to the technological state of known drum brakes, especially dual power drum brakes, considerable fluctuations frequently occur during the braking effect. Said fluctuations are both traced back to manufacturing tolerances and strong fluctuating characteristic values of the drum brake by self-energizing effects. According to the invention, the lining support (2) of the brake shoe (1) is shaped in an elastic non-rigid manner with regard to axial bending in order to reduce such braking effect fluctuations and to homogenize the pressure behavior of the drum brake shoes (1) inside the brake drum. In addition, the lining support (2) comprised of a supporting band (4) and connecting element (5) is provided with a specifically designed constriction (6) in a peripheral direction in the midsection of the connecting element (5). A flexible drum brake shoe (1) is manufactured by means of such a reduction of the connecting element (5) material cross section. The homogeneous pressure behavior of said brake shoe enables a constant braking effect independent of the respective operational condition of the brake.
Abstract:
Electrical direct current actuators are frequently used in electronic control and regulation devices. Said actuators have a distinct low-pass behavior with respect to the actuating signal. Typical examples for such actuators are electric motors or electromagnets. In order to minimize power losses when controlling such electric direct current actuators, the associated power amplifiers are usually controlled by a pulse-width modulated actuating signal in the kHz frequency. In order to control the actuator with the previously determined actuating signal even in the case of variations in the direct current fed by the power supply, the calculated actuating signal (UA) is multiplied in a first functional module (5) with a scaling factor calculated in a second functional module (3) on the basis of the relationship between the actual power supply voltage (UBat,N) and the nominal power supply voltage (UBat,Ist). This scaled actuating signal is then fed to the pulse width modulator instead of the output actuating current (UA), whereby the pulse duty factor is thus adapted to the actual power supply current.
Abstract:
The invention relates to a method for determining positional data (15) of a motor vehicle (2), comprising the steps: - determining positional data (15) at a first point in time (106) based on a first algorithm (54), vehicle dynamics data (16) describing a movement of the vehicle (2) and an absolute position (12) of the vehicle (2) being merged, and - determining the positional data (15) at a second point in time (107) based on a second algorithm (54') which is different from the first algorithm (54).
Abstract:
In an electric motor-pump assembly, two working diaphragms (2), each delimiting a working chamber (5), are cyclically driven by a crank drive (6) via connecting rods (8). Said crank drive (6) consists of eccentrics (7) for each connecting rod, which are placed on an axial bearing journal (11) in the extension of an output shaft (12) of an electric motor (13). In order to ensure a rotationally fixed connection between the eccentrics (7) and the bearing journal (11) to be produced and in order to ensure an angularly precise position of the two eccentrics (7), each of the eccentrics (7) is connected to the bearing journal (11) by a positively locking engagement.
Abstract:
The invention relates to a method for transmitting data (12, 35, 36) in a vehicle between a data source (11, 20, 21) and a signal processing device (24, 25, 39) for processing the data (12, 35, 36), said method involving: - receiving (49) the data (12, 35, 36) from the data source (11, 20, 21); - forwarding (49) the data (12, 35, 36) to the signal processing device (24, 25, 39) in accordance with an access authorization (50) that defines whether the data (12, 35, 36) is allowed to be forwarded to the signal processing device (24, 25, 39).