Patent classifications
B60T13/686
Electrohydraulic vehicle braking system having redundant hydraulic pressure generation, and method for operating the braking system
An electrohydraulic vehicle braking system is provided, comprising an electrically controllable first hydraulic pressure generator and an electrically controllable second hydraulic pressure generator. The braking system further comprises a first valve device for each wheel brake, having at least one first valve, wherein in an electrically uncontrolled state the first valve device separates its associated wheel brake from an output of the first hydraulic pressure generator, and in an electrically controlled state connects it to the output of the first hydraulic pressure generator. In addition, a second valve device for each wheel brake is provided, having a second valve between an output of the second hydraulic pressure generator and its associated wheel brake, as well as a third valve between this wheel brake and a first hydraulic fluid reservoir. The first valve device and the second valve device are arranged in parallel to one another.
Method for testing a brake fluid sensor
The present disclosure relates to a method for testing a brake fluid sensor of a vehicle braking system, wherein the brake fluid sensor can indicate the fluid level in the fluid reservoir, wherein the method has the following steps: (1) Altering the fluid level in at least one region of the at least one fluid reservoir by means of at least one braking force generating device; and (2) Detecting whether the at least one brake fluid sensor emits a signal indicating the modified fluid level in the at least one region of the at least one fluid reservoir.
Method for controlling ESC integrated braking system
A method for controlling an ESC integrated braking system including: checking, by a control unit, whether a brake is in an on state or a standby state as the braking system is activated; checking, by the control unit, whether a current temperature value is in a low temperature state lower than specified reference temperature; and controlling, by the control unit, a current duty for driving a hydraulic control valve and a current component of a motor for driving a master cylinder according to the state of the brake and whether the current temperature value is in the low temperature state.
ELECTRONIC BRAKE SYSTEM FOR A COMPRESSED AIR BRAKING SYSTEM OF A UTILITY VEHICLE
An electronic brake system for a braking system of a utility vehicle having a brake encoder with at least one sensor for detecting positions of a brake pedal that is actuated by the driver of the utility vehicle and at least one valve that is mechanically actuated via the brake pedal, and which, as a result of the mechanical actuation, is moved from a pressure reduction position into at least one pressure-maintaining or pressure increase position, in which the valve admits at least one fluid flow for the actuation of at least one operating brake of the braking system, wherein the valve is assigned at least one control element that is different from the brake pedal, by which the valve is moved.
BRAKE SYSTEMS INTEGRATED INTO VEHICLE CORNER MODULES AND METHODS OF USE THEREOF
A Vehicle Corner Module (VCM) based brake system, which includes a brake actuator, adapted to regulate the rotation rate of the wheel assembled to the VCM, a fluid-based brake power source, fluidly connected to the brake actuator and adapted to provide pressurized brake fluid for operating the brake actuator, and a brake-control-circuit, functionally associated with the brake actuator and with the brake power source, and adapted to provide functional inputs to the brake actuator based on a target rotation rate profile desired for a wheel mounted on the VCM. All mechanical components of the VCM-based brake system are disposed within the VCM. The VCM-based brake system and the vehicle platform are not in fluid communication with each other.
SYSTEM ARCHITECTURE OF AN ELECTRONIC BRAKING SYSTEM
A braking system for a vehicle, including: at least one pressure regulating module to set a setpoint brake pressure for at least one brake cylinder of a vehicle wheel; at least one wheel speed sensor to detect the wheel slip of the one vehicle wheel; at least one pressure control valve, assigned to the brake cylinder of a wheel, to control the brake pressure applied at the brake cylinder depending on the wheel slip; and a central processing unit to control the at least one pressure regulating module and the at least one pressure control valve at least starting from a brake signal and the detected data of the at least one wheel speed sensor, which has a direct connection to the central processing unit to transmit data detected by the wheel speed sensor.
BRAKING SYSTEM, BRAKING METHOD, AND VEHICLE
A braking system includes a pedal assembly, a hydraulic assembly, a reversing assembly, a driving wheel assembly, a pedal feel simulator, and a first electronic control unit. The first electronic control unit is electrically connected to the reversing assembly, and controls the reversing assembly to switch a working location. The reversing assembly includes at least two working locations. When the reversing assembly is at a first working location, a brake fluid output port of the hydraulic assembly is connected to the driving wheel assembly through the reversing assembly. When the reversing assembly is at a second working location, the first electronic control unit is electrically connected to the driving wheel assembly, and controls the driving wheel assembly to provide brake force.
ELECTRO-HYDRAULIC HYBRID BRAKING SYSTEM FOR VEHICLE
An electro-hydraulic hybrid braking system for a vehicle is disclosed. The system includes multiple wheel-end braking modules (1), a hydraulic control module (2), a first electronic control module (3), and a second electronic control module (4). Each of the wheel-end braking modules (1) includes a hydraulic piston (10), a motor (8), and a speed-reducing transmission mechanism (9) configured to convert a rotary motion from the motor (8) into a linear motion for driving the hydraulic piston (10) or brake friction plates (12) to move forwards. The hydraulic piston (10) is movably arranged, and is movable forwards through brake hydraulic pressure. The motor (8) is controlled by the first electronic control module (3) and/or the second electronic control module (4). The electro-hydraulic hybrid braking system for a vehicle is applicable to a vehicle braking system for intelligent driving.
Braking system for a railway vehicle
Disclosed is a railway braking system including a control device having a valve with a body having a cavity and a slide having an internal chamber, supply notches and drainage notches each having an overall passage cross-section for a pressure medium having a shape exhibiting an apex, and being movably mounted in the cavity, between a supply position where the supply notch is opposite a supply groove of the body, and a drainage position where the drainage notch is opposite a drainage groove of the body; the device being configured to allow a substantially stable control configuration, wherein the pressure value of the medium is limited, and wherein the slide is positioned in the cavity such that a control notch of the slide is opposite a control groove of the body while the supply and drainage notches are respectively at a distance from the supply and drainage grooves.
Hydraulic brake system for a vehicle, and corresponding operating method
A hydraulic brake system for a vehicle includes a master brake cylinder, a hydraulic unit, and multiple wheel brakes. The hydraulic unit Ha at least one brake circuit for modulating the braking pressure in the wheel brakes. At least one wheel brake is paired with a bistable solenoid valve, which is looped into the corresponding fluid channel directly upstream of the paired wheel brake and which enables the braking pressure in the paired wheel brake to be modulated in a de-energized open position and locks the current braking pressure in the paired wheel brake in a de-energized closed position, wherein a volume equalization device which comprises a connectable accumulator opens into the corresponding fluid channel between the bistable solenoid valve and the paired wheel brake.