摘要:
A process for reducing yaw during braking in a vehicle having an anti-lock braking system (ABS) and traveling on a roadway having different coefficients of friction on opposite sides of the vehicle comprises regulating the braking pressures in the wheels of the vehicle during ABS-controlled braking so that a permissible braking pressure difference (.DELTA.P) between the braking pressures in the high and low wheels is maintained. The permissible braking pressure difference (.DELTA.P) is calculated by an electronic system based on an algorithm that takes into account the frictional value of the road, and/or the load on the vehicle, and/or the wheel base of the vehicle, and/or the wheel gauge of the vehicle, and/or the level of the center-of-gravity of the vehicle. The algorithm increases the value of the permissible braking pressure difference (.DELTA.P) as the frictional value of the road, the load of the vehicle, and the wheel base of the vehicle increase. The algorithm decreases the value of the permissible braking pressure difference (.DELTA.P) as the level of the center-of-gravity of the vehicle and the wheel gauge of the vehicle increase.
摘要:
A method for the braking of a vehicle train with pressure-actuated brakes and arrangements for performing this method are disclosed. The prior art shows that, because of a different rapid build-up of a braking pressure in the various rigid vehicles of a vehicle train, there occurs an overrun shock during adjustment transition shifting braking phases. According to one embodiment of the invention, there is furnished a lead and predominance by a predetermined value in the co-braking signal furnished from the one rigid vehicle to the second rigid vehicle of a vehicle train. According to a further embodiment, a predominance by a predetermined amount in the braking pressure in the second vehicle versus the co-braking signal is furnished, if during the preceding brake application actuation the overrun shock has surpassed a preset tolerance width. The invention can be applied in particular for vehicle trains made up of a motor vehicle and one or several trailers or semitrailers.
摘要:
A brake includes a brake shoe, an actuating element for pressing the brake shoe against a brake disc, and at least one lever disposed such that it increases the braking force applied by the brake shoe to the brake disc by deflecting a tangential force acting on the brake shoe during braking. The actuating element comprises at least one brake disc side part, an actuator side part, and a coupling part disposed between the brake disc side part and the actuator side part, wherein the coupling part can be pivoted relative to the brake disc side part and/or the actuator side part.
摘要:
A control system for a vehicle braking systems includes an electronic control system and a brake signal transmitter having at least one circuit actuatable by a driver of the vehicle. Each circuit of the brake signal transmitter transmits an electrical brake signal having a value which is dependent upon an actuating force and/or an actuating stroke supplied to the brake signal transmitter. The electronic control system emits at least one electrical brake actuating signal which is dependent upon the electrical brake signal transmitted by the brake signal transmitter. An electronics block which includes at least a portion of the electronic control system is provided. The brake signal transmitter and the electronics block are integrated into a combined component.
摘要:
The invention rotates to a modulator (1), particularly for a brake system in a motor vehicle, connected to a central module (15) via a data bus (20), the modulator (1) having at least one input (6) for capturing measured values and at least one output (8) for controlling at least one electromagnetic valve, a control circuit for actuating the at least one electromagnetic valve being connected by the data bus (20) such that the measured values captured by the modulator (1) are transmitted to the central module (15), control commands for actuating the at least one electromagnetic valve being first calculated from said measured values in the central module (15), said control commands being transmitted via the data bus (20) to the modulator (1) in order that the modulator (1) selects the at least-one electromagnetic valve as a function of the control commands transmitted via the data bus (20). The invention further relates to a vehicle system having at least two such modulators (1) and a central module (15), the central module (15) being integrated in a modulator (1). The invention further relates to the use of such a modulator (1) as a pressure modulator in an air suspension system or in an electronic braking system (EBS) or in a conventional braking system, the braking system being equipped with an anti-lock braking system (ABS) or an electronic stability program (ESP).
摘要:
A method is provided for at least approximately determining the frictional value utilized between a wheel and the roadway. The method uses a vehicle weight that is determined, at least approximately, and a momentary actuating energy of a brake that is determined during a braking action. The method calculates the frictional value from the momentary actuating energy, the vehicle weight, and the wheel braking factor. In another embodiment, the method determines, at least approximately, the momentary vehicle deceleration. The frictional value is calculated from the momentary vehicle deceleration during braking and the Earth's gravitational acceleration.
摘要:
An apparatus for the recognition of a rising slope is provided in particular for commercial vehicles, such as trucks or busses. The device comprises at least one sensor (1) for the axle load of the rear axle and/or of the front axle, as well as a device (4) for measuring the vehicle acceleration relative to the road. The signals of the sensor (1) and of the device (4) are fed into an electronics (2). The electronics (2) recognizes from these fed-in data, whether the vehicle is disposed on an uphill grade or on a downhill grade or on level ground. The thus generated signal can be further employed in various electronic systems, for example, in an automatic drawbar force control system.
摘要:
A process for reducing the yawing moment that develops during hard braking in a vehicle equipped with an anti-lock braking system (ABS) and traveling on a roadway having different coefficients of friction on opposite sides of the vehicle is disclosed. The driver must compensate for the yawing moment by steering towards the side that has the lower coefficient of friction. The process comprises venting the brake cylinder of the front wheel on the side with the higher coefficient of friction for a time t.sub.AH that is calculated in an electronic control module. The algorithm for computing t.sub.AH depends on the venting time t.sub.AL at the front wheel on the side with the lower coefficient of friction and the maximum or so-called deregulating pressures attained in the cylinders of the rear wheels. The electronic control module receives pressure information from pressure sensors and ascertains the venting time t.sub.AL that the ABS produces at the slipping front wheel. The algorithm used by the electronic control module attenuates the yawing moment in a way that adapts automatically to changing road conditions and vehicle types or loads. This contributes to a shortening of the overall braking distance while maintaining controllability of the vehicle.
摘要:
A process for reducing yaw during braking in a vehicle having an anti-lock braking system (ABS) and traveling on a roadway having different coefficients of friction on opposite sides of the vehicle, is disclosed. The process comprises detecting the braking pressures in the wheels of the vehicle, calculating a permissible braking pressure difference, and adjusting the braking pressures in the wheel on the high friction side (high wheel) so as to maintain the permissible braking pressure difference. The permissible braking pressure difference is a variable value which depends mainly on the deregulating pressure (P.sub.max) at which the ABS begins to deregulate in the low wheel.
摘要:
The invention relates to a control device for a brake system of a vehicle (10; 92; 132; 238), said vehicle (10; 92; 132; 238) having a supporting structure (222; 240) and a cabin (224; 242) that is supported by the supporting structure (222; 240) and has at least one driver's seat (226). The control device is located outside the cabin (224; 242) on the supporting structure (222; 240) and the control device has additional functionality for controlling an electronic air spring system.