摘要:
A method and a system for controlling a parking brake of a motor vehicle are described. According to the described method, an ignition signal and an actuation state of the parking brake are detected. An application force of the parking brake is then set to a first value in dependence upon the actuation state of the parking brake if the ignition signal is present. If the parking brake was previously in an applied actuation state, the application force is reduced from a second value to the first value. If the parking brake was previously in a released actuation state, the application force is increased to the first value. The first value is sufficient to hold the motor vehicle in its current position.
摘要:
A method and a system for controlling a parking brake of a motor vehicle are described. According to the described method, an ignition signal and an actuation state of the parking brake are detected. An application force of the parking brake is then set to a first value in dependence upon the actuation state of the parking brake if the ignition signal is present. If the parking brake was previously in an applied actuation state, the application force is reduced from a second value to the first value. If the parking brake was previously in a released actuation state, the application force is increased to the first value. The first value is sufficient to hold the motor vehicle in its current position.
摘要:
In a vehicle brake having a brake piston accommodated in a housing, a blocking device for securing the brake piston inside the housing and an actuating device for controlling the blocking device, it is provided that the brake piston together with the housing delimits a fluid chamber, which is chargeable with hydraulic fluid, so that the brake piston for actuating the vehicle brake is displaceable hydraulically inside the housing along a piston longitudinal axis, that moreover the blocking device comprises a ramp arrangement and a blocking element that is displaceable relative to the housing, and that by means of the actuating device the blocking element in interaction with the ramp arrangement for securing the brake piston inside the housing is displaceable and connectable to the brake piston. In this vehicle brake, it is further provided that the actuating device comprises a motor drive, which is drive-connected to the ramp arrangement, wherein the blocking element upon activation of the motor drive is displaced to secure and release the brake piston inside the housing.
摘要:
In a vehicle brake having a brake piston accommodated in a housing, a blocking device for securing the brake piston inside the housing and an actuating device for controlling the blocking device, it is provided that the brake piston together with the housing delimits a fluid chamber, which is chargeable with hydraulic fluid, so that the brake piston for actuating the vehicle brake is displaceable hydraulically inside the housing along a piston longitudinal axis, that moreover the blocking device comprises a ramp arrangement and a blocking element that is displaceable relative to the housing, and that by means of the actuating device the blocking element in interaction with the ramp arrangement for securing the brake piston inside the housing is displaceable and connectable to the brake piston. In this vehicle brake, it is further provided that the actuating device comprises a motor drive, which is drive-connected to the ramp arrangement, wherein the blocking element upon activation of the motor drive is displaced to secure and release the brake piston inside the housing.
摘要:
A sensor assembly for a vacuum brake booster (10) comprises a housing (48) arranged outside the brake booster housing (12), in which a differential pressure sensor (56) is located. For connecting the differential pressure sensor (56) with a working chamber (16′) of the brake booster (10), the housing (48) has a first air duct (50) which extends from the sensor assembly (46) to the working chamber (16′) of the brake booster (10). In addition, the sensor assembly (46) has a second air duct (52) which extends into a vacuum chamber (18′) of the brake booster (10) in order to connect the differential pressure sensor (56) with said vacuum chamber (18′). A plug-type or socket-type connector (64) for a further sensor is provided in particular on the side of the sensor assembly (46) which is opposite the air ducts (50, 52).
摘要:
The invention relates to an electromagnetic valve arrangement, preferably for a pressure medium of a vehicle braking system, comprising an electromagnet arrangement which is coupled with a valve closing means which can be brought into several positions, a housing with a first, a second, a third, and a fourth connection of which, in a first position, the first and the second connection are in flow connection with each other, and the third and the fourth connection are blocked; in a second position, the first, the second, the third, and the fourth connection are blocked; in a third position, the first and the second connection are blocked, and the third and the fourth connection are connected with each other; and in a fourth position, the first and the third connection are connected with each other, and the second and the fourth connection are blocked.
摘要:
A hydraulic vehicle braking system comprises a master cylinder having at least one piston displacably accommodated therein, a mechanical actuator that is coupled, or can be coupled, to a brake pedal for actuating the piston, and an electromechanical actuator. The electromechanical actuator is likewise provided for actuating the piston and can be activated, at least for boosting or generating brake force, when the brake pedal is actuated. Furthermore, a valve arrangement is provided, which has a first valve per wheel brake for selectively uncoupling the wheel brake from the master cylinder, and a second valve for selectively reducing the brake pressure at the wheel brake. The valve arrangement can be controlled at least within the framework of an ABS control mode.
摘要:
A brake unit for a hydraulic, single- or multi-circuit brake system of a land vehicle with electric drive for carrying out regenerative braking by means of at least one electrical machine in or at the drive train of the vehicle and braking by means of at least one friction brake, wherein a brake pedal and at least one sensor for detecting a braking request of the driver is provided, a master cylinder for feeding pressurized hydraulic fluid into at least one brake circuit in accordance with the braking request, wherein a dividing cylinder is provided, which has a first hydraulic chamber and a second hydraulic chamber divided from the first by a dividing piston, wherein the first hydraulic chamber has a first port, which is connected to the master cylinder, and a second port, which is connected by a simulation valve to a line leading to the wheel brakes, and the second hydraulic chamber is connected by a shut-off valve to the low-pressure storage chamber, and an orifice is disposed in a connection line between the simulation valve and the low-pressure storage chamber.
摘要:
A method for determining a lack of capacity of a pump, actuated by an electric motor, of a hydraulic brake system of a motor vehicle comprises the steps of generating a hydraulic pressure in a first brake circuit of the brake system by means of a plurality of pump elements of the pump that are assigned to the first brake circuit, limiting the generated hydraulic pressure to a test pressure and simultaneously acquiring a motor-related parameter, and determining a lack of capacity of at least one of the pump elements on the basis of a comparison of the parameter with a comparison value.
摘要:
The assembly includes a master brake cylinder (10) to which at least one brake circuit can be connected, a modulator (12) and a pneumatic braking force booster (14). For modulating the pressure in the brake circuit the modulator (12) is connected to the master brake cylinder (10). The braking force booster (14) comprises a housing (34, 36) having at least one partition (38) movable in piston-like manner. For transmitting reaction forces of the master brake cylinder (10) to a vehicle wall (20) at least one connecting pin (16, 18) extends through the housing (34, 36) of the braking force booster (14). The modulator (12) is likewise mounted with bypassing of the master brake cylinder (10) on at least one connecting pin (16, 18) which extends through the housing (34, 36) of the braking force booster (14). This avoids vibrations generated by the modulator (12) being transmitted directly to the master brake cylinder (10) and possibly damaging the latter in the course of time.