13results about "ASR control systems" patented technology

An electro-pneumatic central pressure control module, having at least two channels, implemented as a structural unit for an electro-pneumatic service brake of a vehicle, having at least two pressure control channels which are electrically controllable with regard to a brake pressure. A central electronic brake control device has a board, carrying electrical and electronic components, in which routines at least for controlling the brake pressure and for controlling the driving dynamics are implemented in the electrical and electronic components. At least one inertial sensor is arranged on or at the at least one board and is electrically conductively connected to at least several of the electrical and electronic components on the board so that the output signals of the at least one inertial sensor are integrated into the at least several electrical and electronic components for carrying out the control of the driving dynamics.

The invention relates to an electropneumatic service brake device (1) for a vehicle, at least comprising: at least one first pneumatic service brake cylinder (BZ1) that can be acted on by a first service brake pressure (p1), and at least one second pneumatic service brake cylinder (BZ2) that can be acted on by a second service brake pressure (p2), a foot brake actuator (5), a pneumatic foot brake valve device (FBV; FBM) for generating a first control pressure (Stp1) and a second control pressure (Stp2) depending on an actuation of the foot brake actuator (5), an electronic service brake control (EBS-ECU), which is designed and configured to generate, depending on an electrical brake request signal, an electrical control signal which represents a target service brake pressure, a first electropneumatic solenoid valve device (2C-EVO), which is provided and designed to be electrically controllable by the electrical control signal or pneumatically controllable by the first control pressure (Stp1), a second electropneumatic solenoid valve device (FAM), which is controlled by the electronic service brake control (EBS-ECU) and designed to generate the second service brake pressure (p2) for the at least one second service brake cylinder (BZ2). According to the invention, the second electropneumatic solenoid valve device (FAM) is designed differently from a pressure control module, such that the second service brake pressure (p2) for the at least one second service brake cylinder (BZ2) can be generated in a plurality of operating modes, which ensure redundant generation of the second service brake pressure (p2) and stability control and / or driving dynamics control.

Longitudinal acceleration, intended travel angle, wheel speed, and requested drive torque signals are measured for a vehicle. The longitudinal acceleration, intended travel angle, wheel speed, and requested drive torque signals are then evaluated. A brake torque is calculated as a function of a propulsive torque, wherein the propulsive torque is produced by a power source for the vehicle. The brake torque is applied when the longitudinal acceleration signal exceeds a longitudinal acceleration threshold, the intended travel angle signal is between intended travel angle limits, the wheel speed signal is less than a minimum speed threshold, the requested drive torque signal exceeds a requested drive torque threshold, and a torque threshold is exceeded.

The application belongs to the technical field of vehicle braking, and specifically provides a rear axle braking control system and method for a lift vehicle, which comprises an EBS axle module, a two-position three-way electromagnetic valve, a double-pass low selection valve and an EBS electric control unit, the EBS axle module is directly connected to the driving axle braking running cavity, the two-position three-way electromagnetic valve is connected to the left and right two-way braking running cavities of the lift axle through two double-pass low selection valves, and the EBS electric control unit is connected to the EBS axle module and the two-position three-way electromagnetic valve. By adding two double-pass low selection valves and a two-position three-way electromagnetic valve to replace the six-channel EBS control system, the problem of the lift axle dragging can be solved when the driving wheel slips and activates the ASR function, the tire wear is reduced, and the braking performance is improved.

The invention relates to an electropneumatic operating brake device (1) for a vehicle, at least comprising: at least one first pneumatic operating brake cylinder (BZ1) which can be acted upon by a first operating brake pressure (p1) and at least one second pneumatic operating brake cylinder (BZ2) which can be acted upon by a second operating brake pressure (p2); a foot brake control mechanism (5); a pneumatic foot brake valve device (FBV; fBM) for generating a first control pressure (Stp1) and a second control pressure (Stp2) as a function of actuation of the foot brake actuation mechanism (5); an electronic operational brake controller (EBS-ECU) constructed and arranged to generate an electric control signal indicative of a desired operational brake pressure in dependence on the electric brake request signal; a first electro-pneumatic solenoid valve device (2C-EVO) which is arranged and designed to be electrically controllable by means of an electric control signal or to be pneumatically controllable by means of a first control pressure (Stp1); a second electropneumatic solenoid valve device (FAM) controlled by the electronic operating brake controller (EBS-ECU) and configured to generate a second operating brake pressure (p2) for at least one second operating brake cylinder (BZ2). According to the invention, the second electropneumatic solenoid valve device (FAM) is designed differently from the pressure control module in such a way that a second operating brake pressure (p2) for the at least one second operating brake cylinder (BZ2) can be generated in a plurality of operating modes, the operating mode ensures redundant generation of the second operating brake pressure (p2) and stability and / or driving dynamics regulation.

The present invention relates to an in-vehicle system and a vehicle braking system. The vehicle braking system includes a brake provided on a wheel of the vehicle to suppress rotation of the wheel, and a braking force control device that controls the braking force of the brake. The braking force control device includes a road surface state acquisition unit that acquires a road surface state which is a state of a road surface on which the vehicle travels. When the road surface state acquisition unit acquires the road surface state as a plurality of states, the braking force is controlled in a form different from the control of each braking force based on each of the plurality of states.

A control system and method for detecting a wheel slip event SEV of a wheel of a vehicle. The method includes determining a moving average SAV(1), 70 of the wheel speed e.g. by filtering detected whee

An electropneumatic service brake device (1) for a vehicle, comprising: at least one pneumatic service brake cylinder (BZ1), loadable with a first service brake pressure (p1), and at least one second pneumatic service brake cylinder (BZ2), loadable with a second service brake pressure (p2), a foot brake actuation device (5), a pneumatic foot brake valve device (FBV, FBM), provided and configured to generate a first control pressure (Stp1) and a second control pressure (Stp2) as a function of an actuation of the foot brake actuation device (5), an electronic service brake control (EBS-ECU), provided and configured to generate an electrical control signal as a function of an electrical brake request signal, wherein the electrical control signal represents a nominal service brake pressure, a first electropneumatic solenoid valve device (2C-EVO), provided and configured to be electrically controllable by the electrical control signal, or pneumatically controllable by the first control pressure (Stp1).

The invention relates to an electro-hydraulic brake (100) of a vehicle, which comprises at least the following: an electronic control unit (1) with an implemented control system that is carried out as required during a braking process in at least one control cycle, wherein during the control cycle at least one brake pressure reduction and at least one brake pressure build-up takes place in at least one hydraulic brake actuator (2), the at least one hydraulic brake actuator (2) which generates a braking force depending on the applied brake pressure, a hydraulic fluid reservoir (3) for the pressureless storage of hydraulic fluid, a pump (4) and a drive motor (5) for the pump (4), at least one pressure accumulator (8) for pressure-storing hydraulic fluid which originates from the hydraulic fluid reservoir (3), flow connections (13, 15, 17;24, 26, 28) between the at least one brake actuator (2), the hydraulic fluid reservoir (3), the pump (4) and the pressure accumulator (8), wherein in at least one flow connection (13, 15, 17; 24, 26, 28) a valve device (10; 23, 25, 27) which is at least partially controllable by the electronic control (1) is arranged, which controls a flow of hydraulic fluid in the at least one flow connection (13, 15, 17; 24, 26, 28), wherein the electronic control (1) controls at least the drive motor (5) for the pump (4) and / or the valve device (10; 23, 25, 27) such that during the at least one control cycle hydraulic fluid flows back and forth or is conveyed back and forth between the at least one brake actuator (2) and the pressure accumulator (8).

Disclosed is electro mechanical brake system including: first pedal sensor, second pedal sensor, and third pedal sensor configured to detect pedal effort applied to brake pedal and generate first braking signal, second braking signal, and third braking signal; first EMB, second EMB, third EMB, and fourth EMB respectively installed in plurality of wheels of vehicle and configured to provide braking force to plurality of wheels of vehicle; first brake controller connected to first pedal sensor, and configured to obtain first target braking torque based on first braking signal and transmit first target braking torque to first, second, third and fourth EMBs; and second brake controller connected to first pedal sensor, second pedal sensor, and third pedal sensor, and configured to obtain second target braking torque based on first braking signal, second braking signal, and third braking signal and transmit second target braking torque to first, second, third and fourth EMBs.

An electrohydraulic brake for a vehicle, which includes an electronic controller having an implemented regulation function, which is carried out during a braking operation as needed in at least one regulating cycle, wherein during the regulating cycle, at least one brake pressure reduction and at least one brake pressure build-up take place in at least one hydraulic brake actuator. The electrohydraulic brake includes a hydraulic fluid reservoir, a pump, and at least one pressure accumulator. The electronic controller controls at least the drive machine for the pump and / or the valve device.

Methods for determining or estimating a first brake pressure for a first brake actuator. Methods are directed towards, for example, situations where a pressure-medium-actuated brake device of at least one first wheel, at which a brake-pressure buildup is necessary during a braking operation, at which for example, there is no first wheel-speed sensor. Methods are also directed towards situations, for example, where a first wheel-speed sensor does not produce a first wheel-speed signal. Methods include determining, measuring, or estimating, during the braking operation and / or during the execution of the controlling operation, a second brake pressure for a second brake actuator.