摘要:
The present invention discloses an electronically controllable brake actuating system for automotive vehicles, including an unpressurized pressure fluid supply reservoir, a pressure source actuatable by an electronic control unit, the pressure of which can be applied to wheel brakes of the vehicle, further including a device for detecting the driver's wish for deceleration as well as valve assemblies inserted upstream of the wheel brakes and connecting the wheel brakes alternatively to the pressure source or the pressure fluid supply reservoir. In order to increase the operational or functional reliability of a system of this type, the present invention discloses the provision of means for detecting gases or air disposed in the system.
摘要:
The present invention discloses an electronically controllable brake actuating system for automotive vehicles, including an unpressurized pressure fluid supply reservoir, a pressure source actuatable by an electronic control unit, the pressure of which can be applied to wheel brakes of the vehicle, further including a device for detecting the driver's wish for deceleration as well as valve assemblies inserted upstream of the wheel brakes and connecting the wheel brakes alternatively to the pressure source or the pressure fluid supply reservoir. In order to increase the operational or functional reliability of a system of this type, the present invention discloses the provision of means for detecting gases or air disposed in the system.
摘要:
An electronically controllable brake actuation system for motor vehicles is proposed, with a master brake cylinder (2), with a pressureless pressure medium reservoir (3), with a pressure source (20) which can be controlled by means of an electronic control unit (32), by means of which pressure can be applied to the wheel brakes (7, 8, 9, 10) of the vehicle, which can be connected by means of at least one hydraulic connection (11, 14), which can be shut off by means of a separating valve (12, 15), to the master brake cylinder (2), with a device (13, 33) for the recognition of the driver's wish to slow down, and with at least one separating piston arrangement (16) which is connected before the wheel brakes (7-10), where the first chamber (17) of this separating piston arrangement can be connected to the master brake cylinder (2), and its second chamber (19) can be connected through a valve device (27) to the pressure source (20) or to the pressure medium reservoir (3). In order to improve the ability to control the brake pressure of such a system, the proposal is made according to the invention that the valve device (27) be designed as a multiple position valve of the slide type, and that a switching seat valve (29) be inserted in the connection between the multiple position valve (27) and the pressure source (20).
摘要:
The present invention relates to a pressure sensor unit, in particular for a pressure control device, comprising a carrier housing for holding several pressure sensors, wherein the carrier housing accepts the pressure sensors as a modular assembly that can be preliminarily tested and forms an independent subassembly preferably arranged between a first and second housing of the pressure control device.
摘要:
In a piezoelectrically actuated fluid valve the bending transducer includes another bearing point at its second end remote from the immovable bearing and the valve closure member points to the valve seat in a defined partial span width between the two ends of the bending transducer.
摘要:
A method for controlling a brake system for automotive vehicles including a vehicle speed control unit permitting the adjustment of a predetermined vehicle speed by way of an automatic intervention into brake control, wherein upon a braking request of the vehicle speed control unit and, simultaneously, a braking request of the driver the function of the vehicle speed control unit is deactivated, wherein the pressure (Px) introduced into the wheel brake due to the braking request of the vehicle speed control unit is reduced according to a predetermined function upon the braking request of the driver, wherein preferably a resulting brake pressure (Pres) is adjusted in the wheel brake of the vehicle which is determined by the formula Pres=PF+PX[1]−(PF*PX[1])/constant Z.
摘要:
The setpoint generator according to the invention utilizes the information "pedal travel s" in combination with the information "pedal force p" by weighting them in input circuits 4,5 and summing up the corresponding partial setpoints p'.sub.s and p'.sub.p to form a setpoint p'.sub.Hz. Here, a countercurrent weighting takes place: If a small force acts on the pedal, the pedal travel is dominant; as the pedal force is growing, the latter is weighted more heavily. In this way, a smooth brake behavior is attained, whereby the comfort is enhanced and the wear of the employed components is reduced.
摘要:
A hydraulic motor vehicle brake installation, the braking pressure modulation of which occurs over adjustable wing cell pumps, as space-saving solution it is proposed to have all the required wing cell pumps driven over a common shaft by a turning-rate stabilized electric motor. An individual control of each individual wing cell pump occurs through the drive of a lift ring each by one proportional magnet per wing cell pump.
摘要:
An electronically controllable brake actuation system for motor vehicles is proposed, with a master cylinder actuated by means of an actuating pedal, said cylinder with brake pressure transducers driven by an electronic control unit, to which wheel brakes of the motor vehicle are directly connected and which are connectable with the master cylinder by means of hydraulic linkages that can be locked by valve devices, with at least one sensor device to recognize the drivers desired deceleration and also with at least one simulator chamber cooperating with the master cylinder. In order to improve the function of a system of this kind, in particular for ASR control processes, it is proposed through this invention that the valve devices be designed as electromagnetic valves driven by the electronic control unit and that the pressure-volume characteristic of the simulator chamber is independent of that of the wheel brakes.
摘要:
The present invention relates to a pressure control valve including a valve tappet which is axially movably arranged in the valve housing and, in a first switch position, provides a pressure fluid connection between a first pressure fluid port that opens into the valve housing and a second pressure fluid port that opens into the valve housing, wherein the valve tappet, in a second switch position, separates the pressure fluid connection between the first pressure fluid port and the second pressure fluid port and, in a third switch position, provides a pressure fluid connection between the second pressure fluid port and a third pressure fluid port, to which end a valve closure member which is axially slidable by the valve tappet is lifted from its valve seat. Another valve closure member is arranged in the valve housing so as to be displaceable in relation to the valve tappet, the valve closure member providing an unimpeded pressure fluid connection between the first pressure fluid port and the second pressure fluid port in a first operating position of the valve tappet and interrupting the pressure fluid connection between the first and the second pressure fluid port in another operating position, and, in the first operating position, having a valve opening cross-section which constantly adjusts the pressure fluid volume flow between the first and the second pressure fluid port.