摘要:
What is described is a pressure generator for a vehicle brake system and also a method for mounting said pressure generator in said vehicle brake system. The pressure generator possesses a modular construction consisting of a pump subassembly and a receiving housing for said subassembly. The housing is designed in such a way that it has at least one fluid connection which, when the pressure generator is in the mounted state, is connected to a fluid inlet or a fluid outlet on a cylinder block belonging to the pump subassembly. Said pump subassembly is preferably constructed as a multi-piston pump and may comprise an actuating unit for the asynchronous actuation of the pumping pistons.
摘要:
Brake equipment comprising a hydraulic, single- or multi-circuit braking system of a land vehicle having an electric drive for executing a regenerative braking of the land vehicle by means of at least one electric machine in or on the drive train of the vehicle and also a braking of the land vehicle by means of at least one wheel brake. A brake pedal and at least one sensor are used to detect a braking requirement of the driver. A master cylinder is used to supply pressurized hydraulic fluid into at least one brake circuit that supplies at least one wheel brake in accordance with the braking requirement. Associated with at least one brake circuit is an electrohydraulic control unit comprising at least a first connection for hydraulic fluid and at least a second connection for hydraulic fluid. An electronic control unit controls components of the electrohydraulic control unit such as a hydraulic pump and switching valves as a function of a braking requirement and/or sensor signals that represent ambient quantities or characteristic quantities coming from the braking system. A regenerative brake unit has at least a first connection for hydraulic fluid and at least a second connection for hydraulic fluid and is hydraulically coupled into at least one of the brake circuits between the master cylinder and at least one of the wheel brakes. The regenerative brake unit is actuated by the electronic control unit to bring about the effect that, in the event of a regenerative braking operation, the volume of hydraulic fluid corresponding to the braking requirement is not supplied into the wheel brakes, but is stored.
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.
摘要:
A valve block (10) includes fluid passages (12), valves (14), and connections (30,32,34) for fluid operated devices. Electromagnets (36) are attached to the valve block (10) for actuating the valves (14). A hood (40) covering the electromagnets (36) is placed on the valve block (10). An external plug group (42) is arranged at the hood (40) and comprises plugs (44) which are accessible from outside and serve for connection to sensors and the like. A second plug group (46) including plugs (48) is arranged within the hood (40), the plugs thereof being connected to the plugs (44) of the external plug group (42). A third plug group (50) including plugs (52) is arranged at the valve block (10), the plugs thereof being adapted for connection to the plugs (48) of the second plug group (46) by donning of the hood (40). The electromagnets (36) are connected to the plugs (52) of the third plug group (50) by a conductor arrangement (56). The hood (40) encloses a space (53) in which electronic components are received.
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.