Hydraulic block for a hydraulic unit of a slip-controlled, hydraulic vehicle braking system and hydraulic vehicle braking system

Abstract

Hydraulic block (15) for a hydraulic unit (2) of a slip-controlled, hydraulic vehicle brake system (1), with receptacles (6') for brake pressure build-up valves (6), which are arranged next to one another in a row in the hydraulic block (15), and with receptacles (7') for brake pressure reduction valves (7), which are arranged next to one another in a row parallel to the row of receptacles (6') for the brake pressure build-up valves (6) in the hydraulic block (15), wherein the hydraulic block (15) has a receptacle (25') for a master brake cylinder pressure sensor (25), which is arranged at an intersection point of two straight lines, one of which is parallel to the rows of receptacles (6', 7') for the brake pressure build-up valves (6) and for the brake pressure reduction valves (7) and outside the two rows of receptacles (6',7') for the brake pressure build-up valves (6) and for the brake pressure reduction valves (7) and the other straight line extends outside a center plane of the hydraulic block (15) between two receptacles (6') for brake pressure build-up valves (6) and between two receptacles (7') for brake pressure reduction valves (7), characterized in that the receptacle (25') for the master brake cylinder pressure sensor (25) is arranged in the area within an imaginary extension of a lateral surface of a connection (3') for a master brake cylinder (3).,

Description

[0001] The invention relates to a hydraulic block for a hydraulic unit of a slip-controlled hydraulic vehicle brake system, having the features of the preamble of claim 1. The invention per se relates to a bore of such a hydraulic block, i.e., details of an arrangement of hydraulic components of a slip control system on and in the hydraulic block, and their hydraulic connections in the hydraulic block. Furthermore, the invention relates to a hydraulic vehicle brake system, having the features of the preamble of claim 9. State of the art

[0002] Such hydraulic blocks are well known. They are typically low, cuboid-shaped metal blocks for the installation of hydraulic components such as hydraulic pumps, solenoid valves, hydraulic accumulators, and damper chambers in a slip-controlled vehicle braking system. The hydraulic blocks mechanically hold the hydraulic components and connect them hydraulically, typically through drilled connecting lines. A hydraulic block equipped with the hydraulic components forms a hydraulic unit and is the core of the slip control system. Low means that hydraulic blocks are often approximately one-quarter to one-third, and rarely more than half, of their length and width. Viewed from above, hydraulic blocks are rectangular and often almost square. The hydraulic block normally contains only hydraulic components. Electromechanical parts such as coils and armatures of the solenoid valves protrude from the hydraulic blocks.An electric motor for driving the hydraulic pumps is also attached to the outside of the hydraulic block.

[0003] Such a hydraulic block is known from published patent application DE 10 2006 059 924 A1. The known hydraulic block has receptacles for brake pressure build-up valves and brake pressure reduction valves. The receptacles for the brake pressure build-up valves are arranged in a row next to one another in the hydraulic block. The receptacles for the brake pressure reduction valves are arranged in a further row parallel to the row of receptacles for the brake pressure build-up valves in the hydraulic block. A similar hydraulic block is known from DE 10 2007 031 308 A1.

[0004] From DE 103 53 888 A1, a hydraulic block for a hydraulic unit of a slip-controlled, hydraulic vehicle brake system is known, with inlet valve receiving bores as receptacles for brake pressure build-up valves, which are arranged side by side in a row in the hydraulic block, and with outlet valve receiving bores as receptacles for brake pressure reduction valves, which are arranged side by side in a row parallel to the row of receptacles for the brake pressure build-up valves in the hydraulic block, wherein the hydraulic block has a pressure sensor receiving bore as a receptacle for a master brake cylinder pressure sensor, which is arranged at an intersection point of two straight lines,one straight line runs parallel to the rows of inlet valve bores and the outlet valve bores and outside the two rows of inlet valve bores and the outlet valve bores, and the other straight line runs outside a center plane of the hydraulic block between two inlet valve bores and between two outlet valve bores. Disclosure of the invention

[0005] The subject matter of the invention is the arrangement of a receptacle for a master brake cylinder pressure sensor and / or a pressure sensor for a brake circuit of a vehicle brake system in the hydraulic block and its hydraulic connections to other hydraulic components of a slip control system of the vehicle brake system. The master brake cylinder pressure sensor measures a pressure in a brake circuit of a typically muscle- or auxiliary-power-operated master brake cylinder, to which the hydraulic block is connected via one brake line per brake circuit. The claim provides for the receptacle for the master brake cylinder pressure sensor to be arranged outside the two rows for the brake pressure build-up valves and for the brake pressure reduction valves. The receptacle for the master brake cylinder pressure sensor is preferably arranged on the side of the brake pressure build-up valves.In addition, the mount for the master brake cylinder pressure sensor is arranged outside a center plane perpendicular to the two rows of mounts for the brake pressure build-up valves and the brake pressure reduction valves, in a plane parallel to the center plane, which is located between two mounts for brake pressure build-up valves and between two mounts for brake pressure reduction valves. In other words, the mount for the master brake cylinder pressure sensor is located at one corner of an imaginary triangle, the other two corners of which are located in the mounts of two brake pressure build-up valves, with the mount for the master brake cylinder pressure sensor being arranged on a side of the mounts for the brake pressure build-up valves facing away from the mounts for the brake pressure reduction valves.

[0006] The subject matter of claim 4 is the arrangement of a receptacle for a pressure sensor for a brake circuit of the vehicle brake system in the hydraulic block. According to claim 4, the receptacle for the pressure sensor for a brake circuit is arranged in a center plane of the hydraulic block between two receptacles for brake pressure build-up valves and between two receptacles for brake pressure reduction valves. Preferably, the hydraulic block has two receptacles for two pressure sensors for the two brake circuits of a dual-circuit vehicle brake system, both of which are arranged in the described center plane of the hydraulic block, with one of the two receptacles being arranged outside the two rows of receptacles for the brake pressure build-up valves and for the brake pressure reduction valves, and the other receptacle for the pressure sensor of the other brake circuit being arranged between the two rows of receptacles for the brake pressure build-up valves and the brake pressure reduction valves. (Claims 5 and 6).According to claim 7, the two receptacles for the two pressure sensors for the two brake circuits are arranged on opposite sides of the hydraulic block, for example on an upper side and on a lower side.

[0007] The aim of the invention is a favorable arrangement of the holder for the master brake cylinder pressure sensor and / or the holder(s) for the pressure sensor(s) for the brake circuits of the vehicle brake system in the hydraulic block with regard to a space-saving, compact arrangement of the hydraulic components in and on the hydraulic block and with regard to short and / or minimally angled connecting lines in the hydraulic block. In addition, the ability to drill into the hydraulic block must be guaranteed. Short and minimally angled connecting lines for the pressure sensors are advantageous because brake pressure is rarely constant but usually changes constantly and sometimes at high speed. Long and minimally angled lines throttle pressure changes and can create pressure reflections, which impairs the measurement result. Short and minimally angled connecting lines for the pressure sensor holders in the hydraulic block improves the measurement result and slip control.

[0008] The arrangement of the receptacle(s) for the pressure sensor(s) for the brake circuit(s) of the vehicle brake system in the hydraulic block is independent of the presence and arrangement of the receptacle for the master brake cylinder pressure sensor; the features of claims 4 to 8 can also be implemented in embodiments of the invention independently of the characterising part of the claim.

[0009] The dependent claims relate to advantageous embodiments and further developments of the invention defined in claim 1.

[0010] The subject matter of claim 9 is a hydraulic vehicle brake system that has a pressure sensor in at least one brake circuit, which can also be referred to as a circuit pressure sensor. Wheel pressure sensors can be eliminated. This reduces the number of pressure sensors and allows for better slip control when the brake pressures in the brake circuits are known. Short description of the drawing

[0011] The invention is explained in more detail below using an exemplary embodiment. The figures show: Fig. 1 shows a hydraulic circuit diagram of a slip-controlled hydraulic vehicle brake system according to the invention; Fig. 2 is a perspective front view of a hydraulic block according to the invention; and Fig. 3 a perspective rear view of the hydraulic block from Fig. 2.

[0012] The hydraulic block is drawn transparent to show its bores. The drawings are intended as schematic and simplified representations for the purpose of understanding and explaining the invention. Embodiment of the invention

[0013] The Fig. The slip-controlled hydraulic dual-circuit vehicle brake system 1 shown in Figure 1 comprises a hydraulic unit 2, a dual-circuit master brake cylinder 3 to which the hydraulic unit 2 is connected, and wheel brakes 4 connected to the hydraulic unit 2. The hydraulic unit 2 comprises the hydraulic components of a slip control of the vehicle brake system 1 listed in the following paragraph.

[0014] Each brake circuit I, II of the vehicle brake system 1 is connected to the master brake cylinder 3 via an isolating valve 5. The wheel brakes 4 are connected to the isolating valves 5 via brake pressure build-up valves 6. In each brake circuit I, II, a hydraulic accumulator 8 and a suction side of a hydraulic pump 9 are connected to the wheel brakes 4 via brake pressure reduction valves 7. The two hydraulic pumps 9, which are often also referred to as return pumps, are jointly driven by an electric motor 10. Damper chambers 11 are connected to the pressure sides of the hydraulic pumps, which are connected via throttles 12 to connecting lines 13 that connect the isolating valves 5 and the brake pressure build-up valves 6. In addition, the vehicle brake system 1 has an intake valve 14 in each brake circuit I, II, which connects the suction sides of the hydraulic pumps 9 to the master brake cylinder 3.The structure and function of such slip-controlled vehicle braking systems 1 are known and will not be explained in detail here.

[0015] In brake circuit I, a master cylinder pressure sensor 25 is connected to the master cylinder 3. Furthermore, in each of the two brake circuits I, II, a pressure sensor 26, 27 is connected between the isolation valve 5 and the brake pressure build-up valves 6. This has the advantage that there is only one pressure sensor 26, 27 for each brake circuit I, II, instead of one pressure sensor for each wheel brake 4. A further advantage is better slip control of all vehicle wheels when the pressures in the brake circuits are known instead of the wheel brake pressures.

[0016] The hydraulic components of the hydraulic unit 2 of the slip control of the vehicle brake system 1 are accommodated in a hydraulic block 15, which is Fig. 2 and Fig. 3. The hydraulic block 15 is used for mechanical fastening and hydraulic interconnection of the hydraulic components of the hydraulic unit 2 or the slip control of the vehicle brake system 1. Hydraulic parts of the components are located in receptacles, installation spaces and the like of the hydraulic block, electrotechnical and electromechanical parts such as coils and armatures of the solenoid valves protrude outwards from the hydraulic block 15. The electric motor 10 for driving the hydraulic pumps 9 is fastened to the outside of the hydraulic block 15. The hydraulic block 15 is shown unequipped, i.e. without the hydraulic components. The receptacles are cylindrical, partly diameter-stepped bores in the hydraulic block 15, for the hydraulic interconnection bores are provided as connecting lines or generally as lines in the hydraulic block 15.The receptacles and lines are arranged parallel or at right angles to each other and to the edges and outer surfaces of the hydraulic block 15, i.e., in a Cartesian coordinate system. The hydraulic block 15 is low cuboid-shaped, its thickness is approximately one-quarter of its length or width, and it is almost square in view. For clear identification and differentiation, the symbols shown in . Fig. 2, the flat side of the hydraulic block 15 as the front side 16, which in Fig. The flat side shown in Figure 3 is designated as the rear side 17 and the side surfaces as the longitudinal sides 18 and transverse sides 19. The hydraulic block 15 is mirror-symmetrical to an imaginary longitudinal center plane.

[0017] The hydraulic block 15 has four connections 4' for the wheel brakes 4 on a transverse side 19, which are arranged next to one another in a row. In the exemplary embodiment, "in a row" means that the connections 4' etc. are arranged next to one another on an imaginary straight line. The connections 4' are cylindrical blind holes, from which at least one line 20 leads to other connections, receptacles for solenoid valves, installation spaces for hydraulic pumps, hydraulic accumulators and / or damper chambers. The lines are bores in the hydraulic block 15 which, if they do not originate from a connection, receptacle or installation space, are hermetically sealed at an opening on one of the sides 16, 17, 18, 19 of the hydraulic block 15, for example with a pressed-in ball. The connections 4' can have internal threads for connecting wheel brake lines or can be provided for caulking, for example crimping, to connect the wheel brake lines.Arranged on the transverse side 19 of the hydraulic block 15 means that the connections 4' on this transverse side 19 are open, allowing the wheel brake lines to be connected. For the installation spaces for the hydraulic pumps and hydraulic accumulators, arranged on one side of the hydraulic block 15 means that the installation spaces on this side of the hydraulic block 15 are open, allowing the hydraulic pumps or hydraulic accumulators to be inserted or installed from this side. The same applies to the solenoid valve mounts.

[0018] At a distance from the transverse side 19 of the hydraulic block 15, which corresponds approximately to a depth of the connections 4' for the wheel brakes 4, there are two connections 3' for the two brake circuits I, II of the master brake cylinder 3 on the rear side 17 of the hydraulic block 15. The connections 3' for the master brake cylinder 3 are each arranged between an outer and an inner connection 4' for the wheel brakes 4.

[0019] Adjacent to the ports 3' for the master brake cylinder 3, four receptacles 6' for the brake pressure build-up valves 6 are arranged in a row next to one another on the front side 16 of the hydraulic block 15. The receptacles 6' for the brake pressure build-up valves 6 are connected to the ports 4' for the wheel brakes 4 by the aforementioned lines 20.

[0020] In a further row parallel to the receptacles 6' for the brake pressure build-up valves 6, on a side of the connections 6' for the brake pressure build-up valves 6 facing away from the connections 4' for the wheel brakes 4, connections 7' for the brake pressure reduction valves 7 are arranged next to one another on the front side 16 of the hydraulic block 15.

[0021] Adjacent to the receptacles 7' for the brake pressure reduction valves 7 are installation spaces 9' for the hydraulic pumps 9, which are arranged on the long sides 18 of the hydraulic block 15, i.e. are open and run parallel to the rows of juxtaposed receptacles 6', 7' for the brake pressure build-up valves 6 and the brake pressure reduction valves 7. The installation spaces 9' for the hydraulic pumps 9 extend comparatively deep into the hydraulic block 15 and, after two diameter-reducing steps, open radially into an eccentric space 10' for a pump eccentric (not shown here) which is arranged in a rotationally fixed manner on a shaft of the electric motor 10, which drives the hydraulic pumps 9 designed as piston pumps. The eccentric space 10' is open on the rear side 17 of the hydraulic block 15 and is located in the middle between the installation spaces 9' for the hydraulic pumps 9.The electric motor 10, not shown, is mounted externally on the rear side 17 of the hydraulic block 15 coaxially to the eccentric space 10'.

[0022] In a further row parallel to the rows of receptacles 6', 7' for the brake pressure build-up valves 6 and for the brake pressure reduction valves 7, four receptacles 5', 14' for the isolation valves 5 and the intake valves 14 are arranged next to one another on the front side 16 of the hydraulic block 15 on a side of the installation spaces 9' for the hydraulic pumps 9 facing away from the receptacles 6', 7' for the brake pressure build-up valves 6 and brake pressure reduction valves 7. The receptacles 5' for the isolation valves 5 are arranged between the receptacles 14' for the intake valves 14.

[0023] Two installation spaces 8' for the hydraulic accumulators 8 are adjacent to the row of receptacles 5', 14' for the isolation valves 5 and the intake valves 14. The installation spaces 8' are arranged on a transverse side of the hydraulic block 15, which is opposite the transverse side 19 on which the connections 4' for the wheel brakes 4 are arranged.

[0024] Between the two rows of receptacles 6', 7' for the brake pressure build-up valves 6 and the brake pressure reduction valves 7, two installation spaces 11' for the damper chambers 11 are arranged. The installation spaces 11' for the damper chambers 11 are arranged on the long sides 18 of the hydraulic block 15, i.e. they are open there for the installation of the damper chambers 11, and they run parallel to the rows of installation spaces 6', 7' for the brake pressure build-up valves 6 and the brake pressure reduction valves 7. The receptacles 6', 7' for the brake pressure build-up valves 6 and the brake pressure reduction valves 7 are, as mentioned, arranged on the front side 16 of the hydraulic block 15. The installation spaces 11' for the damper chambers 11 are arranged near the rear side 17 of the hydraulic block 15, i.e., as seen from the top side 16 of the hydraulic block 15, below the receptacles 6', 7' for the brake pressure build-up valves 6 and the brake pressure reduction valves 7 in the hydraulic block 15.

[0025] Perforated discs 12', which form the throttles 12, are inserted into the installation spaces 11' for the damper chambers 11. The installation spaces 11' for the damper chambers 11 are hermetically and pressure-tightly sealed with covers 21, which are inserted into the openings of the installation spaces 11' for the damper chambers 11 and welded, for example, ultrasonically welded, or caulked. From a hydraulic perspective, the discs 12', which form the throttles 12, are located between the hydraulic accumulators 11 on one side and the isolation valves 5 and the brake pressure build-up valves 6 on the other side of the discs 12'.

[0026] At their base, the installation spaces 11' for the damper chambers 11 are connected to the connecting lines 13 by short connecting lines 22 which are axially parallel to the installation spaces 11' (see Fig.3), which connect the receptacles 5' for the isolating valves 5 with the internally arranged receptacles 6' for the brake pressure build-up valves 6. The externally arranged receptacles 6' for the other two brake pressure build-up valves 6 are connected by transverse bores 24 to the internally arranged receptacles 6' for the brake pressure build-up valves 6. The lines 13 run parallel to the long sides 18 of the hydraulic block 15 and perpendicular to the installation spaces 9' for the hydraulic pumps 9 and the installation spaces 11' for the damper chambers 11. The lines 13 open at the narrow side 19, on which the connections 4' for the wheel brakes 4 are arranged, and are sealed there in a pressure-tight and hermetically sealed manner with pressed-in balls (not shown).The connecting lines 22 of the installation spaces 11' for the throttle chambers 11 to the connecting lines 13 are, as mentioned, axially parallel to the installation spaces 11' and arranged eccentrically at a point on a circumference of the installation spaces 11' that faces the transverse side 19 of the hydraulic block 15, on which the connections 4' for the wheel brakes 4 are arranged. This enables or simplifies venting when filling the fully assembled hydraulic block 15, i.e., one equipped with the hydraulic components of the slip control of the vehicle brake system 1, with brake fluid.

[0027] By arranging the installation spaces 11' for the damper chambers 11 between the receptacles 6' for the brake pressure build-up valves 6 and the receptacles 7' for the brake pressure reduction valves 7, the damper chambers 11 can be accommodated in the hydraulic block 15 in a space-saving manner.

[0028] The hydraulic block 15 is drilled Cartesian, i.e. the receptacles, installation spaces, lines are drilled parallel or at right angles to each other and to the sides of the hydraulic block 15.

[0029] In the longitudinal center plane, the hydraulic block 15 has two receptacles 26', 27' for the two pressure sensors 26, 27 for measuring the brake pressures in the two brake circuits I, II. One of the two receptacles 27' is located on the front side 16 between the two rows of receptacles 6', 7' for the brake pressure build-up valves 6 and brake pressure reduction valves 7. This receptacle 27' for the pressure sensor 27 communicates via a short transverse line 28 with one of the two installation spaces 11' for a damper chamber 11, into the base of which the transverse line 28 opens. Near their base, the installation spaces 11' for the damper chambers 11 are intersected by the connecting lines 13, which run parallel to the longitudinal center plane in the hydraulic block 15 and open at the transverse side 19, on which the connections 4' for the wheel brakes 4 are arranged. The connecting lines 13 are sealed pressure-tight at their openings by pressed-in balls. The connecting lines 13 run on both sides of the eccentric chamber 10'.Cross bores 24, which open into the connecting lines 13, connect the two receptacles 6' for the brake pressure build-up valves 6 of the respective brake circuit I, II with the associated connecting line 13. The connecting lines 13 end at the receptacles 5' for the isolating valves 5, so that the receptacle 27' for the pressure sensor 27 for one brake circuit is connected through the cross bore to the connecting line 13 of one brake circuit, which connects the receptacle 5' for the isolating valve 5 with the receptacles 6' for the brake pressure build-up valves 6 of this brake circuit.

[0030] The other receptacle 26' for the pressure sensor 26 of the other brake circuit is, as already mentioned, also arranged in the longitudinal center plane of the hydraulic block 15, but on the opposite side, namely the rear side 17, and it is offset towards the transverse side 19 of the hydraulic block 15, on which the connections 4' for the wheel brakes 4 are arranged. The receptacle 26' for the pressure sensor 26 is arranged on a side of the receptacles 6' for the brake pressure build-up valves 6, facing away from the receptacles 7' for the brake pressure reduction valves 7. It is connected by a short longitudinal bore 29 in the longitudinal center plane of the hydraulic block 15 and by a vertical bore 30, which is also located in the longitudinal center plane of the hydraulic block 15, to the transverse bore 24, which connects the two receptacles 6' for the brake pressure build-up valves of the other brake circuit. This transverse bore 24 is extended to the longitudinal center of the hydraulic block 15.

[0031] A receptacle 25' for the master brake cylinder pressure sensor 25 is arranged between the transverse side 19 of the hydraulic block 15, on which the connections 4' for the wheel brakes 4 are arranged, and the row of receptacles 6' for the brake pressure build-up valves 6. The receptacle 25' for the master brake cylinder pressure sensor 25 is located in a longitudinal plane that is parallel to the longitudinal center plane between an inner receptacle 6' for a brake pressure build-up valve 6, close to the longitudinal center plane, and a receptacle 6' for a brake pressure build-up valve 6, close to one longitudinal side 18, and likewise between a receptacle 7 for a brake pressure reduction valve 7, close to the longitudinal center plane of the hydraulic block 15, and a receptacle 7' for a brake pressure reduction valve 7, close to the longitudinal side 18 of the hydraulic block 15.The receptacle 25 for the master cylinder pressure sensor 25' is arranged in the region of an imaginary extension of a cylindrical outer surface of one of the two connections 3' for the master cylinder, with the connection 3' being arranged on the rear side 17 and the receptacles 25 for the master cylinder pressure sensor 25 being arranged opposite on the front side 16 of the hydraulic block 15. By arranging the receptacle 25 for the master cylinder pressure sensor 25 within the outer surface of the connection 3' for the master cylinder, the receptacle 25' for the master cylinder pressure sensor 25 can be connected to a vertical bore 31 in a short distance.

[0032] The receptacles 5', 14' for the isolation valves 5 and the intake valves 14 are connected to the connecting line 13 of the respective brake circuits I, II via a transverse bore 32. The vertical bore 31 connects the receptacle 25' for the master brake cylinder pressure sensor 25 to the connection 3' of the master brake cylinder 3.

Claims

[1] Hydraulic block (15) for a hydraulic unit (2) of a slip-controlled, hydraulic vehicle brake system (1), with receptacles (6') for brake pressure build-up valves (6), which are arranged next to one another in a row in the hydraulic block (15), and with receptacles (7') for brake pressure reduction valves (7), which are arranged next to one another in a row parallel to the row of receptacles (6') for the brake pressure build-up valves (6) in the hydraulic block (15), wherein the hydraulic block (15) has a receptacle (25') for a master brake cylinder pressure sensor (25), which is arranged at an intersection point of two straight lines, one of which is parallel to the rows of receptacles (6', 7') for the brake pressure build-up valves (6) and for the brake pressure reduction valves (7) and outside the two rows of receptacles (6',7') for the brake pressure build-up valves (6) and for the brake pressure reduction valves (7) and the other straight line runs outside a center plane of the hydraulic block (15) between two receptacles (6') for brake pressure build-up valves (6) and between two receptacles (7') for brake pressure reduction valves (7), , characterized by that the receptacle (25') for the master brake cylinder pressure sensor (25) is arranged in the area within an imaginary extension of a lateral surface of a connection (3') for a master brake cylinder (3). [2] Hydraulic block according to claim 1, characterized by that the receptacle (25') for the master brake cylinder pressure sensor (25) is arranged on a side (16) of the hydraulic block (15) opposite a connection (3') for a master brake cylinder (3). [3] Hydraulic block according to claim 1, characterized bythat the hydraulic block (1) has receptacles (5', 14') for isolating valves (5) and / or suction valves (14) arranged side by side in a row parallel to the rows of receptacles (6', 7') for the brake pressure build-up valves (6) and the brake pressure reduction valves (7), and that the receptacles (5', 14') for the isolating valves (5) and / or the suction valves (14) communicate through a transverse bore (32) with a connecting line (13) which runs outside the center plane of the hydraulic block (15) between two receptacles (6') for brake pressure build-up valves and between two receptacles (7') for brake pressure reduction valves (7) and communicates with a connection (3') for a master brake cylinder (3). [4] Hydraulic block according to claim 1, characterized by that the hydraulic block (15) has a receptacle (26', 27') for a pressure sensor (26, 27) for a brake circuit (I, II) of the vehicle brake system (1), which is arranged in a central plane of the hydraulic block (15). [5] Hydraulic block according to claim 4, characterized by that the receptacle (26', 27') for the pressure sensor (26, 27) of the brake circuit (I, II) of the vehicle brake system (1) is arranged outside the two rows of receptacles (6', 7') for the brake pressure build-up valves (6) and for the brake pressure reduction valves (7). [6] Hydraulic block according to claim 4, characterized by that the receptacle (27') for the pressure sensor (27) of the brake circuit of the vehicle brake system (1) is arranged between the two rows of receptacles (6', 7') for the brake pressure build-up valves (6) and the brake pressure reduction valves (7). [7] Hydraulic block according to claim 4, characterized by that the hydraulic block (15) has two receptacles (26', 27') for two pressure sensors (26, 27) for two brake circuits (I, II) of the vehicle brake system (1), which are arranged on opposite sides (16, 17) of the hydraulic block (15). [8] Hydraulic block according to claim 4, characterized bythat the receptacle (26', 27') for the pressure sensor (26, 27) for the brake circuit (I, II) of the vehicle brake system (1) communicates with a receptacle (11') for a damper chamber (11). [9] Hydraulic vehicle brake system (1), with a master brake cylinder (3) to which wheel brakes (4) are connected via a separating valve (5) in each brake circuit (I, II) and a brake pressure build-up valve (6) for each wheel brake (4), characterized by that the vehicle brake system (1) has a pressure sensor (26, 27) in at least one brake circuit (I, II) which is connected between the isolating valve (5) and the brake pressure build-up valves (6).

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