Abstract: Disclosed is a brake actuating unit for actuating a motor vehicle brake system of the ‘brake-by-wire’ type. The system includes a brake booster which is operable in response to the driver's wish both by a brake pedal and by an electronic control unit. A device is provided to decouple a force-transmitting connection between the brake pedal and the brake booster in the ‘brake-by-wire’ operating mode. A master brake cylinder connected downstream of the brake booster, a device to detect a deceleration request of the driver, and a pedal travel simulator which interacts with the brake pedal and due to which a resetting force acting on the brake pedal can be simulated in the ‘brake-by-wire’ operating mode independently of an actuation of the brake booster, and which can be enabled in the ‘brake-by-wire’ operating mode when the force-transmitting connection between the brake pedal and the brake booster is decoupled and can be disabled outside the ‘brake-by-wire’ operating mode.

Abstract: A brake system of the brake-by-wire (BBW) type for a vehicle having a brake pressure signal generator which can be activated by a brake pedal and can be connected to wheel brakes outside the BBW operating mode, having a pressure source which can be actuated by an electronic control unit and can be connected to the brakes of the vehicle in the BBW operating mode, having provisions for sensing a driver's deceleration request and having a pedal travel simulator which interacts with the brake pedal. A restoring force acting on the brake pedal can be simulated in the BBW operating mode independently of the actuating of the pressure source, and having a device which can be actuated by the electronic control unit and which permits activation of the pedal travel simulator in the BBW operating mode and deactivation of the pedal travel simulator outside the BBW operating mode.

Abstract: A brake actuator unit for actuating a motor vehicle braking system of the “brake-by-wire” type, having a brake booster which can be actuated by a brake pedal and by an electronic control unit as a function of a driver's request and has a piston rod, a master brake cylinder arranged downstream of the brake booster, and a pedal travel simulator which interacts with the brake pedal and is arranged in parallel with the piston rod and by which, in the “brake-by-wire” mode, a restoring force acting on the brake pedal can be simulated independently of actuation of the brake booster. In order to decouple a force-transmitting connection between the brake pedal and the brake booster in the “brake-by-wire” mode, a distance ‘a’ is provided between the brake pedal and a component arranged downstream in the force flux and assigned to the brake booster.

Abstract: A brake actuation unit for actuating a motor vehicle brake system of the “Brake-by-wire” type, has a brake booster which can be actuated both by a brake pedal and by an electronic control unit as a function of a driver's request and has a piston rod. A mechanism is provided for decoupling a force-transmitting connection between the brake pedal and a brake booster in the “Brake-by-wire” operating mode. A distance ‘a’ is provided in order to decouple the brake pedal in the “Brake-by-wire” operating mode from reaction forces of the motor vehicle brake system. A securing element, which has a funnel-shaped receptacle oriented in the direction of the piston rod, is attached to the brake pedal to guide an end of the piston rod.

Abstract: A “brake-by-wire” type brake system for a motor vehicle, having a brake pressure sensor which can be activated by a brake pedal of a pedal unit and can be connected to wheel brakes of the vehicle outside the “brake-by-wire” operating mode, having a pressure source which can be actuated by an electronic control unit and can be connected to the wheel brakes of the vehicle in the “brake-by-wire” operating mode, and having a pedal travel simulator which interacts with the brake pedal and is formed by at least one simulator element, and a restoring force which acts on the brake pedal independently of the actuation of the pressure source can be simulated in the “brake-by-wire” operating mode. In order to provide a simpler and more cost-effective “brake-by-wire” type brake system, a force/travel characteristic of the pedal travel simulator is provided in a controllable fashion.

Abstract: A brake booster for a motor vehicle brake system of the “brake-by-wire” type, which can be activated, on the one hand, by a brake pedal and, on the other hand, as a function of a driver's request, as well as independently of the driver's will by an electronic control unit, wherein the coupling of the brake pedal to an input element of the brake booster is embodied by a piston rod head provided with longitudinal guide openings, in such a way that a limited relative movement of the brake pedal is possible with respect to the input element, as a result of which, in particular in the “brake-by-wire” operating mode, decoupling of the force-transmitting connection between the brake pedal and the input element is ensured. The piston rod head is embodied as a U-shaped bent part which engages around the brake pedal.

Abstract: A brake system of the brake-by-wire (BBW) type for a vehicle having a brake pressure signal generator which can be activated by a brake pedal and can be connected to wheel brakes outside the BBW operating mode, having a pressure source which can be actuated by an electronic control unit and can be connected to the brakes of the vehicle in the BBW operating mode, having provisions for sensing a driver's deceleration request and having a pedal travel simulator which interacts with the brake pedal. A restoring force acting on the brake pedal can be simulated in the BBW operating mode independently of the actuating of the pressure source, and having a device which can be actuated by the electronic control unit and which permits activation of the pedal travel simulator in the BBW operating mode and deactivation of the pedal travel simulator outside the BBW operating mode.

Abstract: A brake booster for a motor vehicle brake system of the brake-by-wire type, which can be activated both by means of a brake pedal and as a function of a driver's request, as well as independently of the driver's wish by means of an electronic control unit, wherein the coupling of the brake pedal, or of a force transmitting part which is permanently connected to the brake pedal, to an input member of the brake booster is embodied in such a way that the brake pedal or the force transmitting part can carry out a limited relative movement with respect to the input member. In order to minimize the friction which occurs between the force transmitting part and the input member when the brake booster is activated, the force transmitting part, and/or the input member of the brake booster are/is provided in the region of the relative movement of the two parts with respect to one another with means which reduce friction which occurs during the relative movement of the parts with respect to one another.

Abstract: In order to increase the operational safety of a device which is used in a brake system of the “brake-by-wire” type and has the purpose of activating and deactivating a pedal travel simulator, an articulated connection which permits an all around pivoting movement of a piston rod is provided between a piston and the piston rod which activates the latter.

Abstract: A pneumatic brake booster includes a booster housing, subdivided into at least two chambers by at least one axially movable wall to which a pneumatic differential pressure can be applied, a control valve controlling the differential pressure and being arranged in a control housing, an operable input member, connected to a valve piston, an output member which applies a boosting force to a master cylinder, as well as an accommodating element, which accommodates a rubber-elastic reaction element and the output member abutting thereon in a radial direction, with the accommodating element being axially and radially supported on the control housing and being held in an axial direction by means of a holding element.

Abstract: The invention relates to a brake actuation unit for actuating a ‘brake-by-wire’ type brake system for a motor vehicle comprising a brake booster operable both by means of a brake pedal mounted on a shaft and by means of an electronic control unit depending on the driver's request, with means being provided to decouple a force-transmitting connection between the brake pedal and the brake booster in the ‘brake-by-wire’ operating mode, means to detect a deceleration request of the driver, as well as a pedal travel simulator which interacts with the brake pedal and is formed of a simulator spring, which is arranged in terms of effect between a force-transmitting part connected to the brake pedal and a simulator housing, which is mounted on the shaft by means of two bearings. It is arranged according to the invention that the simulator housing (22) includes a cylindrical area (26) for the accommodation of the two bearings (27, 28).

Abstract: Disclosed is a brake actuating unit for actuating a motor vehicle brake system of the ‘brake-by-wire’ type. The system includes a brake booster which is operable in response to the driver's wish both by a brake pedal and by an electronic control unit. A device is provided to decouple a force-transmitting connection between the brake pedal and the brake booster in the ‘brake-by-wire’ operating mode. A master brake cylinder connected downstream of the brake booster, a device to detect a deceleration request of the driver, and a pedal travel simulator which interacts with the brake pedal and due to which a resetting force acting on the brake pedal can be simulated in the ‘brake-by-wire’ operating mode independently of an actuation of the brake booster, and which can be enabled in the ‘brake-by-wire’ operating mode when the force-transmitting connection between the brake pedal and the brake booster is decoupled and can be disabled outside the ‘brake-by-wire’ operating mode.

Abstract: The present invention relates to an adjustable pedal device including at least two pedals whose initial position is variable. A pedal device is disclosed wherein a control member is rotatably articulated at the pedal lever for the brake, while the lever is rotatable about a third axis. It is disadvantageous in the prior art construction that a second pedal, particularly an accelerator pedal, cannot be simultaneously adjusted according to said principle because the forces acting upon the individual pedals are not effective in the same direction. The invention relates to a pedal device which has a simple design and in which the initial position of the mentioned two pedals can be adjusted in a substantially uniform manner, the two pedals being mounted in a twistable mounting support while being rotated about axes that are offset one relative to the other.

Abstract: A pneumatic brake booster includes a booster housing, subdivided into at least two chambers by at least one axially movable wall to which a pneumatic differential pressure can be applied, a control valve controlling the differential pressure and being arranged in a control housing, an operable input member, connected to a valve piston, an output member which applies a boosting force to a master cylinder, as well as an accommodating element, which accommodates a rubber-elastic reaction element and the output member abutting thereon in a radial direction, with the accommodating element being axially and radially supported on the control housing and being held in an axial direction by means of a holding element.

Abstract: The invention relates to a master cylinder with a pressure chamber formed in a housing of the master cylinder and a reservoir bore for accommodating a pressure fluid reservoir, a valve with a closing element being provided which due to a pressure difference prevailing between the pressure chamber and the pressure fluid reservoir can be moved into an opening position or a closing position, the valve in its opening position allowing a pressure fluid flow from the pressure fluid reservoir into the pressure chamber and throttling or preventing, in its closing position, a pressure fluid flow from the pressure chamber into the pressure fluid reservoir. Means are provided which maintain the closing body in its opening position when it is acted upon by a closing pressure difference during vacuum filling of the brake system.

Abstract: The invention relates to a master cylinder, in particular for a hydraulic brake system, with at least one pressure chamber formed in a housing of the master cylinder and at least one reservoir bore for accommodating a pressure fluid reservoir, a valve with a closing element being provided which due to a pressure difference prevailing between the pressure chamber and the pressure fluid reservoir can be moved into an opening position or a closing position, the valve in its opening position allowing a pressure fluid flow from the pressure fluid reservoir into the pressure chamber and throttling or preventing, in its closing position, a pressure fluid flow in the opposite direction to the pressure fluid flow from the pressure chamber into the pressure fluid reservoir.

Abstract: The present invention relates to an adjustable pedal device including at least two pedals whose initial position is variable. A pedal device is disclosed wherein a control member is rotatably articulated at the pedal lever for the brake, while the lever is rotatable about a third axis. It is disadvantageous in the prior art construction that a second pedal, particularly an accelerator pedal, cannot be simultaneously adjusted according to said principle because the forces acting upon the individual pedals are not effective in the same direction. The invention relates to a pedal device which has a simple design and in which the initial position of the mentioned two pedals can be adjusted in a substantially uniform manner, the two pedals being mounted in a twistable mounting support while being rotated about axes that are offset one relative to the other.