Abstract: In order to produce a compact hydraulic unit for use in an electrohydraulic braking system, the invention discloses that a first accommodating bore for a first feeding device of a pump is passed through between valve accommodating bores of a first and second valve row, and in that second and third accommodating bores for the accommodation of second and third feeding devices of the pump ae passed through between valve accommodating bores; of a third valve row.

Abstract: A piston pump (10) for a hydraulic consumer of an electronically controlled vehicle brake system, carries a stepped piston (50, 50?) and centers a sealing assembly (26, 26?) which is retained in an axial direction Ax by a step (52, 52?) on the stepped piston (50, 50?), on the one hand, and is retained by a spring cage (53, 53?), on the other hand. The stepped piston (50, 50?) includes a plane support (54, 54?) for plane support legs (55a,b,c; 55a,b,c?) of the spring cage (53, 53?) The stepped piston (50, 50?) includes radially inwards, with respect to the support (54, 54?), a stepped bore (56, 56?), with the bore (56, 56?) accommodating centering legs (57a,b,c; 57a,b,c?) of the spring cage (53, 53?). Coaxially as well as inside the stepped bore (56, 56?), a spring-loaded valve member (59, 59?) of a non-return valve is arranged.

Abstract: The present invention relates to a hydraulic unit for slip-controlled brake systems which includes a third row of valves in the accommodating member between a first row of valves having the valve-accommodating bores for the inlet valves and the second housing surface wherein the third row of valves includes at least in one valve-accommodating bore an electric change-over valve which is closed in its basic position and hydraulically linked to the pump-accommodating bore by way of a portion of a suction channel that traverses the first row of valves for connection to the pump-accommodating bore.

Abstract: The invention relates to a motor-pump unit for a motor vehicle brake system, comprising a motor and a pump which is provided with a shaft that is driven by said motor, with the shaft end being rotatably mounted by means of at least one bearing in an accommodating member having valves and connecting channels, said shaft driving displacement means which are disposed in a chamber that can be filled with pressure fluid. In order to improve vacuum filling of the brake system with pressure fluid, the invention discloses that the shaft end terminates into a free space, and that at least one connection is provided between the free space and the chamber.

Abstract: The invention relates to a pressure sensor module, in particular for electrohydraulic brake systems, with several pressure sensors arranged in a sensor housing that is connected with its flange surface to the mounting surface of a hydraulic housing in such a fashion that several pressure ducts arranged in the sensor housing and in the hydraulic housing are interconnected. The invention discloses that a cylindrical element provided with two fastening sections is arranged between the flange surface and the mounting surface, with the first fastening section being operatively and/or positively connected to the sensor housing, while the second fastening section is operatively and/or positively connected to the hydraulic housing.

Abstract: The invention relates to a supply device for the supply of pressure fluid into at least one vehicle brake, into a pressure fluid reservoir or into a pressure fluid accumulator, with a pressure fluid inlet and a pressure fluid outlet as well as with the following features: a piston is movably arranged in an accommodating member and has at least two hydraulically active diameters for the supply in the direction of the pressure fluid outlet, at least one non-return valve is used for the ventilation of a working chamber into which the piston is immersed. It is the essence of the invention that the piston has a multi-part design and comprises at least two synchronously movable partial pistons with the first partial piston exhibiting the first hydraulically active diameter, and the second partial piston exhibiting the second hydraulically active diameter.

Abstract: The invention relates to a supply device for the supply of pressure fluid into at least one vehicle brake or into a pressure fluid accumulator, wherein a piston is movably arranged in an accommodating member, a carrier bears a non-return valve arranged coaxially to the piston for the purpose of ventilating a working chamber into which the piston plunges, and wherein a resetting spring is arranged between the carrier and the piston. It is the essence of the invention that a multi-piece cage allows inserting the resetting spring into the cage parts, the cage parts comprise fastening means that lock the cage due to relative displacement of the cage parts, and the resetting spring is caged and simultaneously elastically preloaded under the relative displacement of the cage parts.

Abstract: The present invention relates to a hydraulic unit for slip-controlled brake systems which includes a third row of valves in the accommodating member between a first row of valves having the valve-accommodating bores for the inlet valves and the second housing surface, wherein the third row of valves includes at least in one valve-accommodating bore an electric change-over valve which is closed in its basic position and hydraulically linked to the pump-accommodating bore by way of a portion of a suction channel that traverses the first row of valves for connection to the pump-accommodating bore.

Abstract: A hydraulic unit whose inlet valves are arranged in valve accommodating bores of a first valve row which is spatially separated by way of a pump accommodating bore from a second valve row accommodating the outlet valves, wherein several valve accommodating bores of a third valve row remote from the pump accommodating bore open directly between the second valve row and the braking pressure generator ports into a first housing surface of the accommodating member, and wherein an electric change-over valve closed in its basic position is provided in at least one valve accommodating bore of the third valve row for the hydraulic communication between at least one braking pressure generator port and a suction-side connection of the pump accommodating bore, the hydraulic communication between said changeover valve and the pump accommodating bore being established by way of a portion of a suction channel, the length thereof being determined by the distance between the pump accommodating bore and the third valve row.

Abstract: The present invention relates to a motor-pump aggregate with a motor and a piston pump, more particularly for electronically controlled brake systems of motor vehicles, wherein pistons of the pump are drivable by way of an eccentric that is connected to a shaft of the motor and are connected by means of a coupling ring, and wherein the motor has a holding plate. According to the present invention, a projection is provided on the holding plate and extends until into the range of motion of the coupling ring. This provides a stop for the coupling ring, on the one hand, and an improved outlet for leakage fluid of the pump, on the other hand.

Abstract: The present invention relates to a brake pressure control device, more particularly, for anti-lock pressure control and for automatic brake intervention for the purpose of traction slip control and/or driving dynamics control in automotive vehicle brake systems, including accommodating bores for pressure modulation valves arranged in a housing, pressure sensor connecting ports which lead into the housing and into which there are inserted pressure sensors that sense the pressure in a housing-side pressure fluid conduit respectively connected to a brake pressure generator. The pressure sensor connecting port either opens into the pressure fluid conduit between two accommodating bores that are directed into the housing, or is part of the pressure modulation valve.

Abstract: The present invention relates to a motor-pump aggregate with a motor and a piston pump , more particularly for electronically controlled brake systems of motor vehicles, wherein pistons of the pump are drivable by way of an eccentric that is connected to a shaft of the motor and are connected by means of a coupling ring, and wherein the motor has a holding plate. According to the present invention, a projection is provided on the holding plate and extends until into the range of motion of the coupling ring. This provides a stop for the coupling ring, on the one hand, and an improved outlet for leakage fluid of the pump, on the other hand.

Abstract: The present invention relates to a hydraulic unit whose inlet valves are arranged in valve accommodating bores (2C, 2D) of a first valve row (X) which is spatially separated by means of a pump accommodating bore (5) from a second valve row (Y) accommodating the outlet valves, wherein several valve accommodating bores (2E, 2F) of a third valve row (Z) remote from the pump accommodating bore (5) open directly between the second valve row (Y) and the braking pressure generator ports (B1, B2) into a first housing surface (A1) of the accommodating member (4), and wherein an electric change-over valve closed in its basic position is provided in at least one valve accommodating bore (2E) of the third valve row (Z) for the hydraulic communication between at least one braking pressure generator port (B1 or B2) and a suction-side connection of the pump accommodating bore (2), the hydraulic communication between said change-over valve and the pump accommodating bore (5) being established by way of a portion of a suction

Abstract: The present invention relates to a hydraulic aggregate for a slip-controlled brake system which includes noise damping chambers integrated in a pump bore, wherein there is a hydraulic connection between the brake pressure generator ports and the noise damping chambers by means of pressure fluid channels that open radially or tangentially into the pump bore and are connected to the valve accommodating bores of the first valve row of an accommodating member in which the inlet valves are received.

Abstract: The present invention discloses a hydraulic fluid accumulator comprising a housing having an interior subdivided into three chambers, with the first chamber being filled with a gas and separated from the second chamber by a first media separation element, the second chamber being filled with a fluid and separated by a second media separation element from the third chamber that is also filled with a fluid and connected to a hydraulic port. To safeguard an effective separation of media within the hydraulic fluid accumulator and, thus, a significant increase in its functional safety, the present invention arranges for the second media separation element to be embodied by a metal piston delimiting a chamber that can be vented in the housing.

Abstract: The invention relates to a motor-driven pump unit, in particular for antilock systems of motor vehicles, with an electric motor that is arranged on one side of a pump unit and an electronic unit that is arranged on another side of the pump unit and fastened thereto. The main aspect of the invention is that means are provided for an axially movable attachment and contacting of carbon brushes in connection with an axial installation of the unit. In this way, the individual components of the unit can be assembled axially in a simple manner and at low cost. In addition, the unit requires very little space.

Abstract: The present invention relates to a motor-and-pump assembly including an electric motor and a piston pump, in particular for slip-controlled brake systems of automotive vehicles, wherein pistons of the pump are adapted to be driven by way of an eccentric, and the drive shaft of the electric motor and a support axle of the piston pump are separately designed, and wherein a three-ring bearing furnished with an eccentric intermediate ring is arranged on the support axle. According to the present invention, at least one counterbalance weight is provided in the proximity of the eccentric for the purpose of noise reduction and enhanced truth of running of the assembly.

Abstract: The present invention relates to a brake pressure control device, more particularly, for anti-lock pressure control and for automatic brake intervention for the purpose of traction slip control and/or driving dynamics control in automotive vehicle brake systems, including accommodating bores (3) for pressure modulation valves (4) arranged in a housing (2), pressure sensor connecting ports (1) which lead into the housing (3) and into which there are inserted pressure sensors (7) that sense the pressure in a housing-side pressure fluid conduit (5) respectively connected to a brake pressure generator. The pressure sensor connecting port (1) either opens into the pressure fluid conduit (5) between two accommodating bores (3) that are directed into the housing (2), or is part of the pressure modulation valve (4).

Abstract: The present invention relates to a brake pressure control device, more particularly, for anti-lock pressure control and for automatic brake intervention for the purpose of traction slip control and/or driving dynamics control in automotive vehicle brake systems, including accommodating bores for pressure modulation valves arranged in a housing, pressure sensor connecting ports which lead into the housing and into which there are inserted pressure sensors that sense the pressure in a housing-side pressure fluid conduit respectively connected to a brake pressure generator. The pressure sensor connecting port either opens into the pressure fluid conduit between two accommodating bores that are directed into the housing, or is part of the pressure modulation valve.

Abstract: The present invention discloses a hydraulic fluid accumulator comprising a housing (1) having an interior subdivided into three chambers (2, 3, 4), with the first chamber (2) being filled with a gas and separated from the second chamber (3) by a first media separation element (6), the second chamber being filled with a fluid and separated by a second media separation element (7) from the third chamber (4) that is also filled with a fluid and connected to a hydraulic port (5).