Abstract: A main brake cylinder, for use within an electronic braking system for motor vehicles, having a device for contactless monitoring of a position of a piston that can be linearly moved along a piston axis. The device includes a movable element and a sensor unit. The sensor unit is fixedly arranged on a housing of the main brake cylinder and is connected to an electronic evaluation unit for processing signals from the device. According to the invention, in order to further increase function precision, to lower manufacturing expenditure, number of components, and costs, to reduce overall length, and to improve calibration options, a magnetic field is realized such as to be emittable from the sensor unit, and a yoke is dedicated to the piston for position-dependently changing the magnetic field such that the change can be detected by the sensor unit.

Abstract: A main brake cylinder, for use within an electronic braking system for motor vehicles, having a device for contactless monitoring of a position of a piston that can be linearly moved along a piston axis. The device includes a movable element and a sensor unit. The sensor unit is fixedly arranged on a housing of the main brake cylinder and is connected to an electronic evaluation unit for processing signals from the device. According to the invention, in order to further increase function precision, to lower manufacturing expenditure, number of components, and costs, to reduce overall length, and to improve calibration options, a magnetic field is realized such as to be emittable from the sensor unit, and a yoke is dedicated to the piston for position-dependently changing the magnetic field such that said change can be detected by the sensor unit.

Abstract: A motor vehicle includes an electrohydraulic brake system with driving dynamics control, a master brake cylinder (1), wheel brakes (75-78), and at least one pressure fluid supply device (94, 95) actuated by an electronic control unit. The pressure can be applied to the wheel brakes (75, 76, 77, 78) of the vehicle which are also connectable to the master brake cylinder (1) by way of a closable hydraulic connection (73, 74). A device for detecting a brake application includes a magnet (35) as a signal transmitter and a sensor element (36). The sensor element (36), upon piston movement of the master cylinder (1), senses a change in the magnetic field and outputs a digital signal and an analog signal. The two signals are passed on to an electronic control unit and are evaluated in the electronic control unit.

Abstract: A motor vehicle includes an electrohydraulic brake system with driving dynamics control, a master brake cylinder (1) operable by means of a brake pedal (43), at least one pressure fluid supply device (94, 95) which can be actuated by an electronic control unit and the pressure of which can be applied to wheel brakes (75, 76, 77, 78) of the vehicle which are connectable to the master brake cylinder (1), on the other hand, by way of at least one hydraulic connection (73, 74) that is closable by means of a separating valve (80, 81), each one inlet valve (82, 83, 84, 85) and one outlet valve (86, 87, 88, 89) connected upstream of the wheel brakes (75, 76, 77, 78), as well as with a device for detecting brake application which comprises a magnet (35) as a signal transmitter and a sensor element (36).

Abstract: Disclosed is a device for monitoring the position and movement of a brake pedal, including a master cylinder 1; 102 with an integrated position generator for monitoring the position of a piston 2; 105 within a housing 6; 103 for use in a controlled brake system for motor vehicles, in particular with driving dynamics control, and the position generator includes a magnet 35; 150 as a signal transmitter which transmits a magnetic field in the direction of a sensor element 36; 151 being stationary on the housing 6; 103, and is connectable to an electronic control unit. To monitor a push rod piston even during a driving dynamics control operation, it is disclosed that the magnet 35; 150 is arranged between two pistons 2, 3; 105, 106 and is displaceable in relation to at least one of the pistons 2, 3; 105, 106.

Abstract: Disclosed is a measuring device (1) for determining one or more characteristics of a fluid or the level of this fluid in a reservoir (8). In particular, the device is utilized in the brake fluid reservoir of a motor vehicle brake system that may be electronically controlled. The device includes an integrated measuring electronic system (2), a sensor device (4), an electric supply line (18, 26), and an electric connecting line (9).