Abstract: For ascertaining at least one variable regarding a state of a brake fluid in a brake system of a vehicle, an evaluation unit is configured to determine the at least one variable by taking into account at least one pair of values of a provided or ascertained volume flow variable regarding a volume flow of at least a portion of the brake fluid through a flow resistance in the brake system and a provided or ascertained associated pressure drop variable regarding a pressure drop at the flow resistance through which the volume flow flows. For the at least one pair of values taken into account, a volume flow variable lies within a first specified limited value range and the pressure drop variable lies within a second specified limited value range.

Abstract: The present invention relates to a braking device and to a braking system, each having a master brake cylinder (10) having at least one first pressure chamber (12) that is subdivided or is able to be subdivided at least into a first partial volume (12a) and a second partial volume (12b), which are hydraulically connectable or connected to a brake fluid reservoir (24), a first brake circuit (28) being hydraulically connectable or connected to the first partial volume (12a), and having a valve device (38) that is mechanically designed in such a way that a pressure buildup up to a mechanically specified limit pressure may be brought about in the second partial volume (12b), brake fluid being transferable at least into the first brake circuit (28) via at least one subcomponent (38a) of the valve device (38), and an exceeding of the limit pressure in the second partial volume (12b) being prevented.

Abstract: A brake system for a vehicle, including: a master brake cylinder having a first chamber, a rod piston, which, together with at least one first hydraulically active surface area, bounds the first chamber, a second chamber and a floating piston; the rod piston being configured with or couplable to a second hydraulically active surface area; the second hydraulically active surface area bounding an auxiliary chamber of the master brake cylinder or of another brake cylinder, and the auxiliary chamber being attached to an accumulator chamber and/or to the hydraulic reservoir via a first nonreturn valve and a restrictor that is configured in a further fluid line.

Abstract: A braking device and a braking system are provided, each having a master brake cylinder having at least one first pressure chamber that is subdivided or is able to be subdivided at least into a first partial volume and a second partial volume, which are hydraulically connectable or connected to a brake fluid reservoir, a first brake circuit being hydraulically connectable or connected to the first partial volume, and having a valve device that is mechanically designed in such a way that a pressure buildup up to a mechanically specified limit pressure may be brought about in the second partial volume, brake fluid being transferable at least into the first brake circuit via at least one subcomponent of the valve device, and an exceeding of the limit pressure in the second partial volume being prevented.

Abstract: For ascertaining at least one variable regarding a state of a brake fluid in a brake system of a vehicle, an evaluation unit is configured to determine the at least one variable by taking into account at least one pair of values of a provided or ascertained volume flow variable regarding a volume flow of at least a portion of the brake fluid through a flow resistance in the brake system and a provided or ascertained associated pressure drop variable regarding a pressure drop at the flow resistance through which the volume flow flows. For the at least one pair of values taken into account, a volume flow variable lies within a first specified limited value range and the pressure drop variable lies within a second specified limited value range.

Abstract: A brake system for a vehicle, including: a master brake cylinder having a first chamber, a rod piston, which, together with at least one first hydraulically active surface area, bounds the first chamber, a second chamber and a floating piston; the rod piston being configured with or couplable to a second hydraulically active surface area; the second hydraulically active surface area bounding an auxiliary chamber of the master brake cylinder or of another brake cylinder, and the auxiliary chamber being attached to an accumulator chamber and/or to the hydraulic reservoir via a first nonreturn valve and a restrictor that is configured in a further fluid line.

Abstract: An internal-to-vehicle mechanism for monitoring the air pressure of a tire of a vehicle includes a sensor, detecting the tire pressure, which rotates, together with an electrotechnical first device, synchronously with the wheel and which, as a function of the tire air pressure that is determined, modifies parameters of the first device, namely the energy uptake of the first device. A stationary electrotechnical second device radiates an electric and/or magnetic, in particular electromagnetic, field through which the first device passes at, preferably, each wheel rotation with an uptake of energy from the field. A monitoring device detects the energy uptake and/or energy release of the second device.