Abstract: A vehicle braking system is provided that includes a brake pedal; a pedal simulator that generates reaction force corresponding to the brake pedal force and a pedal position sensor that detects a brake pedal operating state. A booster boosts brake pedal force and a master cylinder generates hydraulic pressure by activating the booster. A hydraulic controller is activated by the master cylinder and activates a wheel cylinder. A hydraulic power unit includes a cut valve controlling brake fluid supply between a reservoir and the pedal simulator, apply valves selectively supplying brake operating fluid to the booster and release valves selectively releasing the brake operating fluid from the booster. A switch unit selects reaction force modes and a controller operates the hydraulic power unit based on an output signal from the pedal position sensor, and adjusts the cut valve timing based on reaction force mode transmitted from the switch unit.

Abstract: A pushing force controlling apparatus for a pedal simulator that includes a simulator cylinder in which a first pipe and a second pipe extending from a master cylinder are connected to a front side and a rear side thereof, respectively. A first solenoid valve and a second solenoid valve are installed in the first pipe and the second pipe, respectively and a first piston and a second piston are disposed at a front side and a rear side of an interior of the simulator cylinder. A buffering member is installed between the first piston and the second piston, and pedal pushing force characteristics are controlled by variably setting a position of the second piston in the simulator cylinder using an amount of fluid provided from the master cylinder during an operation of a pedal.

Abstract: A brake pedal simulator apparatus for a vehicle for implementing a change in a foot effort applied to a brake pedal for each stroke, may include a pedal arm including one end hinge-connected to one side of a frame and the other end in which a pad may be mounted, a link unit including a plurality of links mutually connected between the frame and the pedal arm, and an elastic member elastically supporting the link unit and configured to form reaction force by elastic force in the pedal arm according to the each stroke by the foot effort applied to the pedal arm.

Abstract: A pedal simulator using a multi-stage series spring includes a cylinder into which an operation rod connected to a brake pedal is inserted; a piston installed in the cylinder to receive a force of the operation rod; a plurality of springs installed between the cylinder and the piston to resiliently support the piston in the cylinder and disposed to overlap each other from an inner side to an outer side; and a plurality of spring seats disposed in the cylinder to overlap each other from an inner side to an outer side and configured to support the springs while being interposed between the springs, wherein the springs are installed between the piston, the spring seats, and the cylinder such that the plurality of springs are connected to each other in a multi-stage series structure.

Abstract: A regenerative braking system for a vehicle improves accuracy of a control. The regenerative braking system for a vehicle is operated by hydraulic pressure. The regenerative braking system may include a first cylinder adapted to directly generate hydraulic pressure by a driver's maneuver; a second cylinder adapted to generate hydraulic pressure necessary for braking of the vehicle and to deliver the hydraulic pressure to a wheel; a hydraulic pressure generator adapted to recognize braking force demanded by the driver and to generate hydraulic pressure; and a first valve interposed between the first cylinder and the second cylinder and adapted to selectively supply the hydraulic pressure generated by the first cylinder to the second cylinder.

Abstract: Provided is a method for controlling regenerative braking in an electric vehicle, including operating regenerative braking, checking if a data communication using a control area network (CAN) standard is properly made between a regenerative braking torque controller and a hydraulic pressure braking torque controller, and enabling the regenerative braking torque controller and the hydraulic pressure braking torque controller to maintain regenerative braking torque and hydraulic pressure torque at their respective previous levels or to increase regenerative braking torque and/or hydraulic pressure torque until braking ends, when the data communication fails between the regenerative braking torque controller and the hydraulic pressure braking torque controller.

Abstract: A braking control method of a braking control apparatus for a hybrid vehicle, may include accumulating a brake fluid amount bypassed to a reservoir tank during regenerative braking cooperation control performed by a brake demand, finishing the regenerative braking cooperation control when the accumulated brake fluid amount surpasses a predetermined value, and resetting the accumulated brake fluid amount when a brake pedal is released and a predetermined time elapses.

Abstract: A method for controlling regenerative braking of a vehicle includes initiating the regenerative braking, detecting an amount of slip of a wheel during the regenerative braking, if the amount of slip is increasing, reducing a regenerative braking torque, and if the amount of slip is greater than a set value, actuating an antilock brake system and reducing the regenerative braking torque or a hydraulic braking torque continuously until the vehicle is stopped. Alternatively, if the amount of slip is increasing, the regenerative braking torque is not reduced.

Abstract: A method for controlling regenerative braking of a vehicle includes: initiating the regenerative braking; detecting an amount of slip of a wheel during the regenerative braking; if the amount of slip is increasing, reducing a regenerative braking torque; and if the amount of slip is greater than a set value, actuating an antilock brake system and reducing the regenerative braking torque or a hydraulic braking torque continuously until the vehicle is stopped. Alternatively, if the amount of slip is increasing, the regenerative braking torque is not reduced.

Abstract: A method for controlling regenerative braking of an electric that compensates the difference between slip amounts of left and right wheels when an anti-lock braking system ABS is activated in a regenerative braking mode of the driving wheels in the electric vehicle. Steps include activating an anti-lock braking system in a regenerative braking mode of the electric vehicle, detecting slip amounts of left and right wheels to compare the same, and controlling to reduce a hydraulic braking torque or a regenerative braking torque in accordance with the difference between the slip amounts of left and right wheels.

Abstract: The present invention provides a brake system and its control method for a hybrid electric vehicle, comprising a driving motor generating a regenerative braking torque; a hydraulic pressure supplying unit including a brake pedal, a booster and a master cylinder, a first hydraulic line, and a reservoir; a hydraulic brake adjuster for controlling a hydraulic braking pressure; a target braking force detection unit, including a pedal stroke sensor and a hydraulic pressure sensor, for detecting a target braking torque of a driver; and a control unit controlling the driving motor by calculating a maximum regenerative braking torque based on a rotational speed of the driving motor, etc. and controlling the hydraulic brake adjuster to change a hydraulic braking torque to meet the target braking torque in accordance with the thus calculated maximum regenerative braking torque by compensating an braking torque with the hydraulic braking torque.

Abstract: A method for controlling regenerative braking of an electric vehicle includes steps of detecting a pedal stroke generated as a brake pedal is pushed down in a regenerative braking mode, detecting a hydraulic pressure in a master cylinder of a brake system, comparing a detected value of the pedal stroke sensor with a detected value of the master cylinder hydraulic pressure, deciding a state where the detected value of the master cylinder hydraulic pressure compared with the detected value of the pedal stroke sensor is out of a reference range as a fail, suspending a regenerative braking cooperative control in which a regenerative braking and a brake hydraulic pressure control are suspended, and supplying a hydraulic pressure from a hydraulic source to a wheel cylinder of the brake system by a control of the brake hydraulic pressure controller and controlling a target wheel cylinder hydraulic pressure repeatedly with a braking force required by a driver.

Abstract: A method for controlling regenerative braking of an electric that compensates the difference between slip amounts of left and right wheels when an anti-lock braking system ABS is activated in a regenerative braking mode of the driving wheels in the electric vehicle. Steps include activating an anti-lock braking system in a regenerative braking mode of the electric vehicle, detecting slip amounts of left and right wheels to compare the same, and controlling to reduce a hydraulic braking torque or a regenerative braking torque in accordance with the difference between the slip amounts of left and right wheels.

Abstract: A hydraulic control method for generating a regenerative braking force for a that decreases the reduced amount of a regenerative braking force to increase an energy recovery rate by generating the regenerative braking force directly from the regenerative braking. Such a control method includes steps of measuring a braking force required by a driver; determining where or not the braking force required by a driver is greater than a maximum regenerative braking force; generating an insufficient braking force with a hydraulic braking force, determining where or not the braking force required by a driver is greater than a predetermined reference value; gradually applying a fluid pressure or canceling the fluid pressure by setting a hydraulic braking force entry section; and performing a braking operation only with the regenerative braking force.

Abstract: Provided is a method for controlling regenerative braking in an electric vehicle, including operating regenerative braking, checking if a data communication using a control area network (CAN) standard is properly made between a regenerative braking torque controller and a hydraulic pressure braking torque controller, and enabling the regenerative braking torque controller and the hydraulic pressure braking torque controller to maintain regenerative braking torque and hydraulic pressure torque at their respective previous levels or to increase regenerative braking torque and/or hydraulic pressure torque until braking ends, when the data communication fails between the regenerative braking torque controller and the hydraulic pressure braking torque controller.

Abstract: A method for controlling regenerative braking of a vehicle includes: initiating the regenerative braking; detecting an amount of slip of a wheel during the regenerative braking; if the amount of slip is increasing, reducing a regenerative braking torque; and if the amount of slip is greater than a set value, actuating an antilock brake system and reducing the regenerative braking torque or a hydraulic braking torque continuously until the vehicle is stopped. Alternatively, if the amount of slip is increasing, the regenerative braking torque is not reduced.