The present disclosure relates to a friction member and a master cylinder including the same. The master cylinder includes a cylinder body with a bore formed therein, a piston configured to move forward and backward in the bore and protrude a portion thereof from the cylinder body, a housing configured to surround the protruding portion of the piston and having a through hole formed therein such that an input rod connected to a brake pedal to press the piston is inserted, a friction member provided between the housing and the piston to increase a frictional force with the piston when the piston moves forward and backward, and a pedal simulator connected to the piston to provide a repulsive force to the brake pedal.

A brake assembly has a lever configured to press a knee against a pushrod of a piston of a master cylinder assembly. The knee is configured to receive removable inserts that allow a user to modify the angle at which the lever activates the master cylinder assembly. The master cylinder assembly can include protrusions on the outer surface of the cylinder to protect the cylinder from impact damage.

A brake assembly has a lever configured to press a knee against a pushrod of a piston of a master cylinder assembly. The knee is configured to receive removable inserts that allow a user to modify the angle at which the lever activates the master cylinder assembly. The master cylinder assembly can include protrusions on the outer surface of the cylinder to protect the cylinder from impact damage.

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.

In order to offer an improved brake device without vacuum booster, in the case of which brake device the zero point of the cylinder piston remains as far as possible permanently within defined narrow tolerances and at the same time the impact noise is reliably reduced, it is proposed that the stop disk is elastically reversibly compressible in an axial direction over a defined compression travel and has the compression travel delimited, the delimitation being defined in a travel-controlled manner.

In order to offer an improved brake device without vacuum booster, in the case of which brake device the zero point of the cylinder piston remains as far as possible permanently within defined narrow tolerances and at the same time the impact noise is reliably reduced, it is proposed that the stop disk is elastically reversibly compressible in an axial direction over a defined compression travel and has the compression travel delimited, the delimitation being defined in a travel-controlled manner.

A hydraulic cylinder is provided which has a body forming a hydraulic chamber, in which a tubular piston made of thermoplastic material slides. An insert is locked in an internal cavity of the piston and has a spherical seat configured to receive and retain a spherical head of a rod connectable to a control pedal. The insert is made of thermoplastic material and forms a plurality of flexible fins adjacent to the spherical seat. The flexible fins have retaining elements protruding in a radially internal direction to hold the spherical head of the rod. A tensile force exerted by the rod away from the insert is transferred to a body of the piston by a stop ring.

A brake control system and method for autonomous vehicle control that includes a first brake pedal connected to a first brake arm, the first brake arm is connected to a first brake shaft, the first brake shaft extends a length between an upper end and lower end and includes a first actuator that expands and contracts in length. The lower end of the first brake shaft is operably connected to a first brake mechanism. An autonomous control system having a controller with microprocessor, memory and instructions is connected and controls operation of the first actuator. When the first brake shaft expands in length the first brake mechanism is engaged by the lower end of the first brake shaft thereby applying the brakes. The first brake mechanism is operable by depressing the first brake pedal in manual operation mode as well as by controlling the first actuator in autonomous operation mode.

A brake control system and method for autonomous vehicle control that includes a first brake pedal connected to a first brake arm, the first brake arm is connected to a first brake shaft, the first brake shaft extends a length between an upper end and lower end and includes a first actuator that expands and contracts in length. The lower end of the first brake shaft is operably connected to a first brake mechanism. An autonomous control system having a controller with microprocessor, memory and instructions is connected and controls operation of the first actuator. When the first brake shaft expands in length the first brake mechanism is engaged by the lower end of the first brake shaft thereby applying the brakes. The first brake mechanism is operable by depressing the first brake pedal in manual operation mode as well as by controlling the first actuator in autonomous operation mode.

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.