Patent classifications
B60T8/267
Method for operating a braking system of a vehicle, and control device for a braking system of a vehicle
In a method for operating a braking system of a vehicle by limiting brake pressure buildup during an activation of a brake actuating element, the rear wheel outlet valves of the rear wheel brake cylinders, which are respectively associated with a rear wheel of the vehicle, are controlled, at least temporarily, into an open state during the activation of the brake actuating element, and the front wheel inlet valves of the front wheel brake cylinders, which are respectively associated with a front wheel of the vehicle, are controlled, at least temporarily, into a closed state during the control of the rear wheel outlet valves into the open state.
Brake system and method for controlling a brake system
A brake system for a vehicle having a master brake cylinder, which provides a pressure signal, having a brake-medium reservoir connected to the master brake cylinder, and a first brake circuit, which is coupled by a first input to the master brake cylinder and by a second input to the brake-medium reservoir, and having at least one first wheel brake cylinder, which is mounted at a first wheel, in order to exert a force corresponding to the pressure signal onto the first wheel, and having a separator valve, which is configured between the first input and the first wheel-brake cylinder, to prevent further transmission of the pressure signal upon receipt of a supplied closing signal; and having a control valve, which is configured between the first input and the first wheel-brake cylinder; in order to control an inflow of a brake medium from brake-medium reservoir to the first wheel-brake cylinder. In addition, a method for controlling a corresponding brake system is also described.
Method for operating a vehicle brake system
A method that compensates for fluid pressure variations in a vehicle brake system so that the fluid pressure, brake torque and/or brake force at the wheel more accurately reflects that requested by the driver. In an exemplary embodiment, the method determines the braking intent of the driver, determines a current stage of the braking event (e.g., an apply stage, release stage, etc.), uses the braking event stage and the driver braking intent to select a pressure compensation, and uses the pressure compensation to generate compensated brake command signals for operating the vehicle brake system. This method is well suited for use with brake-by-wire systems, such as an electrohydraulic braking (EHB) system.
Brake device and method for vehicle
A brake device for a vehicle may include: a master cylinder generating hydraulic pressure; a pedal pressurizing the master cylinder; a pair of diverging line parts connected to the master cylinder so as to supply hydraulic pressure; a front wheel line part connected to each of the diverging line parts so as to guide hydraulic pressure; a combined brake connected to the front wheel line part, and generating hydraulic pressure while braking a front wheel according to an electrical signal; a rear wheel line part connected to the front wheel line part so as to guide hydraulic pressure; and a hydraulic brake connected to the rear wheel line part, and braking a rear wheel using hydraulic pressure.
METHOD AND SYSTEM FOR CONTROLLING BRAKING FORCE IN REGENERATIVE BRAKE COOPERATIVE CONTROL
A method is provided for controlling braking force in regenerative brake cooperative control of an environmentally friendly vehicle that executes regenerative braking at front wheels and/or rear wheels. A brake system that independently adjusts the braking forces of the front and rear wheels is employed to distribute braking force to assure vehicle stability, to improve fuel efficiency and to have improved braking performance.
Control unit for a recuperative brake system of a vehicle and method for braking a vehicle
A control device for a recuperative braking system of a vehicle includes: an actuating device configured to (i) select the maximum value of a front axle generator braking torque and of a rear axle generator braking torque, taking into account at least one provided default variable concerning a setpoint total braking torque which is predefined by a driver, (ii) control an electric motor, and (iii) control a hydraulic front axle brake circuit component and a hydraulic rear axle brake circuit component in such a way that a front axle brake pressure and a rear axle brake pressure are settable in such a way that a difference between a predefined setpoint braking torque distribution and an actual braking torque distribution present between the front axle and the rear axle is minimized.
BRAKE SYSTEM FOR A MOTOR VEHICLE, AND ELECTROHYDRAULIC BRAKE SYSTEM
A brake system for a motor vehicle includes an electrohydraulic partial brake system, an electromechanical partial brake system, a redundant power supply, and an actuating device (124). The actuating device is configured to determine an actuation signal quantifying a brake request as a result of an actuation by a vehicle driver. The brake system includes a brake control unit (118) with at least two mutually independent partitions. Both partitions are each configured for controlling the electromechanical partial brake system and the electrohydraulic partial brake system on the basis of an actuating signal received from the actuating device.
Corner module for vehicle
The present disclosure in at least one embodiment provides a corner module for a vehicle, including a front-wheel corner module configured to drive a front wheel and including a front-wheel inwheel motor installed on the front wheel to generate a driving force and a friction braking device configured to generate a braking force on the front wheel, a rear-wheel corner module configured to drive a rear wheel and including a rear-wheel inwheel motor installed on the rear wheel to generate a driving force, a driving information detector configured to detect driving information of the vehicle, and an electronic control unit configured to control the front-wheel corner module to form a friction braking force by using the driving information and to control the rear-wheel corner module to form a regenerative braking force, wherein the front-wheel corner module uses the front-wheel inwheel motor that is provided with a lower specification than the rear-wheel inwheel motor to save the manufacturing cost, and the rear-wheel corner module has no friction braking device installed so that the rear-wheel inwheel motor is undamaged by heat.
BRAKE SYSTEM FOR MOTOR VEHICLES, HAVING AN ACTUATOR
A brake system for motor vehicles with wheel brakes, with a reservoir for brake fluid and a pressure provision device and a pressure modulator, The brake system comprises a primary brake system with the hydraulic pressure provision device and the pressure modulator, to which two hydraulic wheel brakes are hydraulically connected. The brake system comprises a dry secondary brake system with two further wheel brakes, wherein a brake request apparatus and an open loop and closed loop control unit connected to it are provided. The open loop and closed loop control unit is configured to actuate the pressure provision device based on a transmitted brake request.
Electric hydraulic brake
An electric hydraulic brake includes a plurality of wheel brakes; a reservoir storing brake oil; a master cylinder connected to the reservoir and configured to generate hydraulic pressure with a first motor; an auxiliary actuator including a second motor and a pump unit having piston pumps linked therewith that transmits the hydraulic pressure to the wheel brakes when the master cylinder malfunctions; a hydraulic circuit that selectively transmits the hydraulic pressure to the wheel brakes, and including a front wheel hydraulic circuit and rear wheel hydraulic circuit each configured to transmit the hydraulic pressure to a pair of front wheel brakes and a pair of rear wheel brakes, respectively, and a plurality of solenoid valves; a first controller to control the first motor and the hydraulic circuit with braking input; and a second controller to control the first motor and the front wheel hydraulic circuit when the first controller malfunctions.