摘要:
The invention concerns a seat valve for hydraulic braking systems with ABS or traction control, with a valve housing (1) which receives at least one valve seat body (4) and a valve closing element (3). The valve closing element (3), when in its normal position, rests on the valve seat body (4) so that a pressure connection between a first and at least a second pressure channel (10, 11) is cut off, the valve closing element (3) is opened by being raised by the valve seat body (4) thus creating the aforementioned pressure connection between the pressure channels (10, 11). A retaining piece (2) is fixed into the valve housing (1) which holds the valve closing element (3) in the position to which it is raised by the valve seat body (4) so as to evacuate and fill the braking system.
摘要:
The recirculation pumps of brake systems with a precharging device are subject to heavy loads from the precharging pressure and are subject to premature wear. Over time, significant leakage occurs which, in the worst case, damage the pump motors. Therefore, the invention proposes regulating the pressure medium supply from the precharging source (4) to the suction side of the recirculation pump (21) in relation to the pressure differential in this connecting line (22). For this purpose, an electromagnetically activated on-off valve (23) with a hydraulically insertable throttle element (52) is proposed.
摘要:
The invention concerns an electronic braking-force-distribution method for a two-axle, four-wheeled vehicle, according to which method the differences in speed between the left-hand and right-hand vehicle sides are compensated during cornering. To that end, a compensation speed is calculated for the rear wheel on the inside of the bend, this speed being added to the individual wheel speed of this rear wheel so as to be compared with a vehicle reference speed. The individual wheel reference speed of this wheel increased in this way with respect to the individual wheel speed of the rear wheel on the inside of the bend prevents an electronic braking-force-distribution system from intervening prematurely since the individual wheel reference speed obtained is closer to the vehicle reference speed than the individual wheel speed. In this way, greater braking force is used during cornering.
摘要:
The description relates to a control unit in which coils (2, 3, 4, 5) of the electromagnets of a hydraulic braking system are arranged in a frame (1). The control unit also has a printed circuit board (8) the extension of which is smaller than that of the frame (1). There are through-contact holes in the printed circuit board (8) which accept the ends (9) of the connecting wires (15, 16) for the coils (2, 3, 4, 5) and are in the form of insulation-displacements-rods. The plug contacts of the printed circuit board are arranged for the optimum component layout, while the connecting wires corresponding to this prerequisite are guided in the controller.
摘要:
For the purposes of vibration damping in the drive system of a vehicle fitted with a regulating system (ABS, ASR, etc.), circumferential rotary vibrations in the wheels are detected by evaluating the rotational behaviour of the individual wheels. The rotary vibrations are damped by injecting the braking pressure or modulating the braking pressure injected to limit the slip in the individual wheel brakes depending on the amplitude and phase relation of the rotary vibrations.
摘要:
Ein Schwimmsattel für eine Scheibenbremse besitzt ein Sattelgehäuse (1), das aus einem ersten Gehäuseschenkel (2) mit einer Bremsbetätigungsvorrichtung (3), einem zweiten Gehäuseschenkel (4) und einem die beiden Gehäuseschenkel (2,4) verbindenden Brückenabschnitt (5) besteht. Der Brückenabschnitt (5) ist mit einem Fenster (7) versehen, das seine in Umfangsrichtung gemessene maximale Breite (8) im Bereich der Bremsscheibe (6) aufweist und dessen Breite zum ersten Gehäuseschenkel (2) hin abnimmt, bis sie am Ende (9) des Fensters (7) weniger als die halbe maximale Breite (8) beträgt. Mit der erfindungsgemäßen Umfangskontur (12) des Fensters (7) wird eine gute Kühlung der Bremsscheibe (6) und der Bremsbeläge bei gleichzeitig hoher Steifigkeit des Sattelgehäuses (1) erzielt und eine erhebliche Senkung der Bremsflüssigkeitstemperatur erreicht.
摘要:
In order to find the transverse acceleration (QFZ) of a vehicle, especially as an input value for an electronic vehicle regulation system (ABS, ASR, EBV, etc.), the output signals from wheel sensors which reproduce the rotational behaviour of the individual vehicle wheels are evaluated. The correction factors are found which detect the differences in the tyre tread circumferences. A short and long non-term correction factor (KZ, LZ) are found for the non-driven vehicle wheels. The difference (DR1) between the long and short-term correction factors of the wheel concerned is found and evaluated in a filter and matching circuit (3). The quotient (KZ/LZ) of the short and long-term correction factors of the wheel concerned is calculated and the difference between the quotients of the left and right-hand non-driven wheels is found. The transverse acceleration of the vehicle (QFZ) is then found from the relation (I).
摘要:
A circuit for conditioning and digitising an analogue signal (x(t)) comprises a regulator circuit which is in the form of a delta modulator and comprises a comparator (1), a clocked flip-flop (2), a digital accumulator (3) and a digital-to-analogue converter (4). The comparator (1) compares the analogue input signal (x(t)) with a tracked signal (y(t)). The digital output signal of the accumulator is converted into a rectangular signal (COUT) corresponding to the analogue input signal (x(t)) by a digital low-pass filter (7) and a threshold value comparator (9) to which the mean value (M) of the digital output signal (DOUT) is supplied as the threshold value.
摘要:
An electronic pressure relief system for a traction slip control vehicle brake system (10) maintains the pressure within the brake system (10) at its desirable level by electronically controlling an isolation valve (32) coupled to the brake conduit (18). The isolation valve (32) is controlled by supplying an energizing current to the valve (32) at a preselected level such that the holding pressure exerted by the valve (32) is maintained at a level approximately equal to the maximum desired pressure level to be maintained within the brake conduit (18) during the traction slip control maneuver.
摘要:
In order to reduce undesired effects of motor drag moments (MSM) on the braking behaviour of a motor vehicle fitted with an anti-lock braking system, the braking slip (μ1,2) of the driven wheels is detected independently of any brake actuation. With a rotation behaviour of the driven wheels (VL, VR) which is typical for the action of motor drag moments (MSM), especially with a brake slip (μ1,2) at these wheels (VL, VR) above a limit, the braking pressure in the wheel brakes of the driven wheels (VL, VR) is kept constant or reduced or, if the braking process has not yet begun, the control of braking pressure into the wheel brakes of the driven wheels is eliminated.