The present invention relates to a master cylinder arrangement (1) for a brake system (10), comprising a tandem master cylinder (2) including a master cylinder housing (20), a first master piston (23) movably arranged in the master cylinder housing (20), a second master piston (24) movably arranged in the master cylinder housing (20), a balancing piston (7) movably arranged in the second master piston (24), and an elastic pedal feel element (50). The invention further relates to a hydraulic system for a brake system as well as a brake system (10).

Provided is an electronic brake system. The electronic brake system includes: a reservoir in which a pressurized medium is stored; an integrated master cylinder including a master chamber and a simulation chamber; a reservoir flow path to communicate the integrated master cylinder and the reservoir; a hydraulic pressure supply device configured to generate a hydraulic pressure by operating a hydraulic piston according to an electrical signal output in response to a displacement of a brake pedal, and including a first pressure chamber provided on one side of the hydraulic piston accommodated to be movable in a cylinder block and connected to one or more wheel cylinders, and a second pressure chamber provided on another side of the hydraulic piston and connected to the one or more wheel cylinders; a hydraulic control unit having a first hydraulic circuit configured to control a hydraulic pressure transferred to two wheel cylinders and a second hydraulic circuit configured to control a hydraulic pressure transferred to other two wheel cylinders; and an electronic control unit configured to control valves based on hydraulic pressure information and displacement information of the brake pedal.

The present disclosure relates to an electronic brake system. The electronic brake system includes a reservoir in which a pressurized medium is stored, an integrated master cylinder including a master chamber and a simulation chamber, a reservoir flow path communicating the integrated master cylinder with the reservoir, a hydraulic pressure supply device provided to generate a hydraulic pressure by operating the hydraulic piston according to an electrical signal output in response to a displacement of the brake pedal, a hydraulic control unit including a first hydraulic circuit provided to control the hydraulic pressure transferred to two wheel cylinders and a second hydraulic circuit provided to control the hydraulic pressure transferred to the other two wheel cylinders, and an electronic control unit provided to control valves based on hydraulic pressure information and displacement information of the brake pedal.

A brake-force simulator for a motor vehicle includes a piston operatively connectible to an operable brake pedal that is guided in an axially displaceable manner in a cylinder; and at least one elastomer spring element situated in the cylinder, which acts with a spring force counter to the movement of the piston in one direction.

A pedal simulator includes a pedal simulator piston configured to move in a linear direction based on a pedal stroke of a driver, a first stopper that is rotatable in a clockwise or counterclockwise direction and configured to adjust a pedal tactile feedback provided to the driver based on the rotation of the first stopper, a first damper disposed inside the pedal simulator piston to be spaced apart from the first stopper by an air gap, and configured to contract or expand based on the movement in the linear direction, and a second stopper configured to be operatively coupled with the first stopper for causing the air gap to change based on the rotation of the first stopper, wherein the pedal tactile feedback changes based on a change in the air gap.

A pedal travel simulator for a hydraulic powered vehicle braking system. In order to realize a “jump-in,” a first piston spring is provided that, after a first displacement path, loads a simulator piston of the pedal travel simulator with a spring force that is higher by a multiple than that of a second piston spring that loads the simulator piston during the first displacement path.

A brake system for a motor vehicle comprises a normally closed circuit separation valve such that the system is configured to operate in 1) in a by-wire mode when the circuit separation valve is open, such that pressure only from a pressure chamber of a linear actuator is delivered to both first and second pairs of wheel brakes, and 2) in a circuit separation mode with the circuit separation valve in the normally closed position, such that pressure from a tandem master cylinder is delivered only to the first pair of wheel brakes, and such that pressure from the pressure chamber of the linear actuator is concurrently delivered only to the second pair of wheel brakes. The system can provide braking pressure even in the event of a by-wire braking module leak that causes inoperability of an ECU.

Provided is an electronic brake system. The electronic brake system according to an embodiment of the disclosure includes a reservoir configured to store a pressing medium; a master cylinder connected to a brake pedal; a pedal simulator connected to the master cylinder; a hydraulic pressure supply device configured to generate hydraulic pressure by operating a hydraulic piston by an electrical signal output corresponding to a displacement of the brake pedal; a hydraulic control unit comprising a first hydraulic circuit and a second hydraulic circuit, and configured to control hydraulic pressure transmitted to the first hydraulic circuit and the second hydraulic circuit, the first hydraulic circuit including a first wheel cylinder and a second wheel cylinder, the second hydraulic circuit including a third wheel cylinder and a fourth wheel cylinder.

Provided is a master cylinder for an electronic brake system. The master cylinder for the electronic brake system includes a pedal simulator provided between a first master piston and a second master piston and having a rubber member that provides reaction force to a brake pedal, and the first master piston includes a first piston and a second piston coupled to be movable relative to each other and having a communication channel to allow a pressing medium to flow between a reservoir and a first master chamber, a communication channel sealing member configured to block a portion of the communication channel according to a relative movement of the first piston and the second piston, and an elastic member configured to provide elastic force in a direction in which the first piston and the second piston are spaced apart.

A pedal force simulator device includes: a pressure piston actuatable by a brake pedal and axially moveably mounted in a housing; and at least two disk spring stacks connected in series, each disk spring stack having at least two disk springs, at least two of the disk spring stacks having different spring constants, and the disk spring stacks being situated in the housing between an end face of the pressure piston and an axial stop of the housing. At least one of the disk spring stacks includes an axial receiving recess, in which a spring element, which can be elastically deformed by the pressure piston, is situated, one end of the spring element being supported on the pressure piston and the other end being supported on one of the disk spring stacks.