A method includes steps for controlling a pneumatic braking system of a trailer vehicle which is connected to a tow vehicle equipped with a hydraulic or pneumatic braking system. At the start of an actuation of the foot brake valve, an electrical switch is closed or opened, and a switching signal is transmitted to an electronic control unit as a braking start signal for an incipient braking process. A brake value sensor detects a brake value representative of the drivers current deceleration request and transmits the brake value to the electronic control unit as a brake value signal. The brake value sensor is used for determining the incipient braking process, and a backup valve is only deactivated by switching a redundancy valve from an open position to a blocking position if the brake value signal detected by the brake value sensor has reached or exceeded a predefined minimum signal value.

A brake pedal portion is configured to be contacted by a driver; an arm portion is connected to the brake portion and is configured to, in response to force being applied to the brake pedal portion, move in a first direction away from a first predetermined position and toward a second predetermined position; a detent mechanism is configured to: apply a first biasing force to the arm portion in a second direction that is opposite to the first direction when a position of the arm portion is between the first predetermined position and a third predetermined position between the first and second predetermined positions; and apply a second biasing force to the arm portion in the second direction opposite to the first direction when the position of the arm portion is between the third and second predetermined positions, where the first biasing force is different than the second biasing force.

An electrically actuatable operating unit (106) for a motor vehicle brake comprises a housing body (122) which is arranged so as to be displaceable in a braking direction for operation of the motor vehicle brake, a recess (150) formed in the housing body (122), wherein the recess (150) is delimited at one longitudinal end by a contact shoulder (172), a through-opening (158) delimited by the contact shoulder (172), an operating member (124) which is arranged in the recess (150) so as to be displaceable for operation of the motor vehicle brake and projects through the through-opening (158) of the contact shoulder (172), wherein the operating member (124) can be arranged in a force-transmitting manner between a brake pedal and the motor vehicle brake (400). The operating unit (106) further comprises a return spring (126) which is arranged in the recess (150) and is configured to move the operating member (124) relative to the housing body (122) away from the contact shoulder (172), and a sleeve element (180) which circumferentially surrounds a portion of the operating member (124) at least partially and is held in contact with the contact shoulder (172) by the return spring (126), and wherein the sleeve element (180) projects into the through-opening (158) in such a manner that it is arranged between the operating member (124) and an inner circumferential surface of the contact shoulder (172) that delimits the through-opening (158).

The present invention relates to a brake system for a vehicle. The proposed brake system (1) comprises an actuation unit for actuating wheel brakes of the vehicle in a normal operating mode of the brake system (1). Further, the system (1) comprises a brake cylinder (2) for pressurizing the wheel brakes of the vehicle in an emergency operating mode of the brake system (1). The brake cylinder (2) comprises a brake cylinder housing (4) and a push rod (3) being displaceable within the brake cylinder housing (4) by operation of a brake pedal (5). The brake cylinder (2) further comprises a piston (14) movably arranged within the brake cylinder housing (4). The piston (14) has a first surface and a second surface opposite the first surface. A hydraulic chamber (11) is formed within the brake cylinder housing (4) between the first surface of the piston (14) and an inner surface of the brake cylinder housing (4). The hydraulic chamber (11) is configured for being selectively fluidly connected with the wheel brakes. The brake cylinder (2) further comprises an elastic simulator element (13) arranged between the second surface of the piston (14) and the push rod (3) for pedal feel simulation. The brake cylinder (2) further comprises a locking element (22) configured to selectively mechanically couple the push rod (3) with the piston (14) to provide a rigid connection between the push rod (3) and the piston (14) during the emergency operating mode.

A rear automatic braking system is automatically overridden and released if the accelerator pedal is depressed with the rate of change which is greater than empirically determined threshold beyond a predetermined percentage of its travel for at least a predetermined length of time and if the vehicle's brake pedal is not depressed.

A sensor monitoring device that comprises: a first controller ECA into which a detected value Smn from a sensor SMN is inputted via a first signal line LMA; a second controller ECB into which the detected value Smn is inputted via a second signal line LMB; and a communication bus CMB that transmits signals between the first controller ECA and the second controller ECB. The second controller ECB reads in the detected value Smn as a second processing value Smb and transmits the second processing value Smb to the first controller ECA via the communication bus CMB. The first controller ECA reads in the detected value Smn as a first processing value Sma, receives the second processing value Smb, and, on the basis of the first processing value Sma and the second processing value Smb, determines the suitability of the first processing value Sma.

Disclosed herein is an electronic brake system using an integrated sensor, which includes a hydraulic block configured to distribute and supply a fluid to a wheel brake, and having a through-hole penetrated at both sides thereof, a sensor module installed at one side of the hydraulic block having the through-hole, for sensing a linear displacement of a brake pedal and a position of a motor, and an electronic control unit installed to a side of the hydraulic block opposite to the sensor module, in order to determine a movement distance of the pedal, based on the linear displacement of the pedal sensed by the sensor module, and control rotation of the motor depending on the linear displacement of the pedal.

A brake system may include an actuation device that may actuate a first piston-cylinder unit to apply pressure medium to at least one brake circuit via a valve device, where a piston of the first piston-cylinder unit separate first and second working chambers; a second piston-cylinder unit, having an electromotive drive and a transmission to feed pressure medium to at least one of the brake circuits via a valve device; and a motor-pump unit having a valve device to feed pressure medium to the brake circuits. The motor of the electromotive drive of the second piston-cylinder unit and the motor of the motor-pump unit may be used jointly or independently of one another, under control of a control device. The motor-pump unit is connected via two hydraulic connections, one or both of which may incorporate separating valves, to the first and second working chambers of the first piston-cylinder unit.

A method for controlling a braking system of a vehicle may include detecting, by a first plurality of detection devices distributed on the braking system of the vehicle, first information representative of a condition of motion of the vehicle. The method may also include detecting, by a second plurality of detection devices belonging to a first driver assistance sub-system associated with the vehicle, second information representative of a condition of motion of the vehicle. The method may also include determining, by a first data processing block, a first control signal of a braking module of the vehicle based on the first information and the second information. The method may also include controlling, by the first data processing block, the braking module of the vehicle based on the determined first control signal.

A brake system (20) for a vehicle includes a brake unit (20A; 20B) having: a fluid reservoir (32) for containing a volume of brake fluid therein, an ECU (1000), and an electronically-controlled plunger device (60) operable to stroke in response to a control signal from the ECU (1000) to supply fluid pressure to at least one wheel cylinder (RL, RR) for vehicle braking. The plunger device (60) includes: a rod (108) coupled to an actuator (M), a primary seal (100) coupled to the rod (108) and arranged to seal against an inner wall of a plunger chamber, and a secondary seal (104) surrounding the rod (108) to seal an interface where the rod (108) exits the plunger chamber. A portion of the plunger chamber between the primary and secondary seals (100, 104) is coupled through a switchable valve (112) to the fluid reservoir (32). A method of operating a brake system (20) for self-contained brake circuit filling comprises the steps of providing a brake unit (20A; 20B), performing a pressure bleed on a first portion of a brake circuit, supplying pressurized brake fluid to a wheel (RL) coupled to the first portion and supplying brake fluid from a reservoir (32) to a second portion of the brake circuit by switching a valve (112) while using a plunger device (60) under control of an ECU (1000).