Abstract: A pump unit for a hydraulic vehicle brake system with traction control has an electric motor driving a radial piston pump. A rotor shaft of the pump unit has a hollow shaft with two standardized, hardened cylindrical pins that are press-fitted into the ends of the hollow shaft. The rotor shaft can be produced simply, economically, and without metal-cutting machining. The hollow shaft has high bending and torsional strength. The rotor shaft has a small diameter at the bearing points, which makes a small bearing diameter and thus a small installation space for the pump unit possible.

Abstract: Pressure pulsations are damped in and a hydraulic unit by a device including a housing with an inlet and an outlet having a throttle and a filter preceding the throttle. The filter and the throttle are combined into a one-piece function element, which can be produced without metal-cutting machining and which can be fixed in the interior of the housing. This preceding filter prevents clogging of the throttle by contaminants in the pressure fluid, without requiring additional expense for parts or assembly. The function element can be produced economically in a minimum number of work steps, can be manipulated without problems, and in an advantageous refinement makes it possible to avoid unwanted accumulations of air in the device.

Abstract: A piston pump for an electronically controllable vehicle brake system including a particularly simple, inexpensive, and space-saving throttle, and a filter hydraulically upstream of it, which prevents the throttle from becoming clogged with impurities. The pressure fluid outlet is routed at least partway along the circumferential surface of the bushing and, in the region of this section, the filter and throttle are embodied in one piece with the circumferential surface of the bushing.

Abstract: An electronically regulatable vehicle brake system, in which a master cylinder cooperates with a hydraulic unit having electronically triggerable valves for modulating the brake pressure of the system. A triggerable, externally driven pressure generator is provided for this purpose; its intake side can be made to communicate with the master cylinder via an intake line controllable by an intake valve unit. For this purpose, an electronically triggerable magnet valve and a mechanical blocking valve are connected in parallel. The blocking valve has a blocking valve member, which when a pressure threshold in the master cylinder is exceeded can be moved out of an open basic position into a blocking position counter to the force of a compression spring. As the electromagnet valve of the intake valve unit, a valve that is structurally identical to one of the valves for modulating the brake pressure can be used.

Abstract: A hydraulic unit for an electronically controllable brake system of a vehicle includes a housing block with mounting faces for instance for an electric motor and an electronic control unit; a plurality of connections for hydraulically contacting the block; and installation chambers, for pump elements, valves, and damping devices. These damping devices are connected hydraulically downstream to the pump elements, in order to damp operation-caused pressure pulsations and noises. Installation chambers (18i-k) for the damping devices and the installation chambers (18a-h) of the valves extend to a common mounting face of the housing block intended for mounting the electronic control unit. The damping devices protrude past this mounting face.

Abstract: Pressure pulsations are damped in and a hydraulic unit by a device including a housing with an inlet and an outlet having a throttle and a filter preceding the throttle. The filter and the throttle are combined into a one-piece function element, which can be produced without metal-cutting machining and which can be fixed in the interior of the housing. This preceding filter prevents clogging of the throttle by contaminants in the pressure fluid, without requiring additional expense for parts or assembly. The function element can be produced economically in a minimum number of work steps, can be manipulated without problems, and in an advantageous refinement makes it possible to avoid unwanted accumulations of air in the device.

Abstract: The invention relates to a housing block in an anti-lock hydraulic vehicle brake system, including a plurality of bores, conduits or holes intended for the function of the anti-lock arrangement. The invention provides that of these function-specific bores, conduits or holes, at least one bore (8), one conduit, or one hole is provided with an engagement face (14) for the positive engagement of a clamping means (16) of a machine tool. As a result, the production of separate clamping bores can be dispensed with.

Abstract: The invention relates to a hydraulic unit for an anti-lock vehicle brake system, having a housing block with a first row of valve receiving chambers for receiving inlet valves, and a second row of valve receiving chambers for receiving outlet valves a pump receiving chamber, whose longitudinal axis extends at least approximately perpendicular to longitudinal axes of the valve receiving chambers and between the longitudinal axes of the valve receiving chambers of the first row and the longitudinal axes of the valve receiving chambers of the second row; low-pressure reservoir receiving chambers, which are disposed on a side, remote from the pump receiving chamber, of the valve receiving chambers of the second row, and whose longitudinal axis extends at least approximately perpendicular to the longitudinal axes of the valve receiving chambers and to the longitudinal axis of the pump receiving chamber; and a separate, direct connection between each valve receiving chamber of an outlet valve and an associated low-

Abstract: A device for damping pressure pulsations, in electronically regulatable vehicle brake systems for damping the pressure pulsations that are caused by pressure generators in a hydraulic circuit connected to it. The device has a housing which encloses a damping chamber and also has at least one hydraulic connection opening into the damping chamber, and a throttle device. The housing and throttle device are embodied as a compact damping unit that can be preassembled, is economical, and can be anchored in only a few work steps to the hydraulic block of an electronically regulatable vehicle brake system.

Abstract: A hydraulic unit for an electronically controllable brake system of a vehicle includes a housing block with mounting faces for instance for an electric motor and an electronic control unit; a plurality of connections for hydraulically contacting the block; and installation chambers, for pump elements, valves, and damping devices. These damping devices are connected hydraulically downstream to the pump elements, in order to damp operation-caused pressure pulsations and noises. Installation chambers (18i-k) for the damping devices and the installation chambers (18a-h) of the valves extend to a common mounting face of the housing block intended for mounting the electronic control unit. The damping devices protrude past this mounting face.

Abstract: The invention relates to a hydraulic unit for an anti-lock vehicle brake system, having a housing block with a first row of valve receiving chambers for receiving inlet valves, and a second row of valve receiving chambers for receiving outlet valves a pump receiving chamber, whose longitudinal axis extends at least approximately perpendicular to longitudinal axes of the valve receiving chambers and between the longitudinal axes of the valve receiving chambers of the first row and the longitudinal axes of the valve receiving chambers of the second row; low-pressure reservoir receiving chambers, which are disposed on a side, remote from the pump receiving chamber, of the valve receiving chambers of the second row, and whose longitudinal axis extends at least approximately perpendicular to the longitudinal axes of the valve receiving chambers and to the longitudinal axis of the pump receiving chamber; and a separate, direct connection between each valve receiving chamber of an outlet valve and an associated low-

Abstract: The invention relates to a pump unit (10) for a hydraulic vehicle brake system with traction control. The pump unit (10) has an electric motor (12) and a radial piston pump (14), which can be driven by the electric motor (12). The invention proposes embodying a rotor shaft (18) of the pump unit (10) with a hollow shaft (20) and with two standardized, hardened cylindrical pins (22, 24) that are press-fitted into the ends of the hollow shaft (20). The invention has the advantage that the rotor shaft (18) can be produced simply, economically, and without metal-cutting machining. Because of its embodiment as a hollow shaft (20), the rotor shaft (18) has high bending and torsional strength. Because of the press-fitted pins (22, 24), the rotor shaft (18) has a small diameter at the bearing points, which makes a small bearing diameter and thus a small installation space for the pump unit (10) possible.

Abstract: A hydraulic unit (11) is elastically supported by means of elastomer elements (17, 18), through which bolts (15, 16) pass, on two legs (13, 14) of a mounting bracket (12) that extend perpendicular to one another. The leg (14) of the mounting bracket (12) has recesses, open counter to the mounting direction (45) of the unit (11), for receiving the elastomer element (18). With clamping means (34, 35, 36) disposed on the bolt (16), the elastomer element (18) is axially shortened and pressed against both the recess and side faces, located on either side of the recess, of the leg (14) of the mounting bracket (12). With the shortened elastomer element (18), a positive and nonpositive engagement with the leg (14) of the mounting bracket (12) is achieved.

Abstract: To enable economical production of a piston for a piston pump, the piston is made from a tubular deformed part and a closure plug, which is press-fitted with a protrusion into the deformed part. The piston has the advantage that the piston can be made without metal cutting in the form of deformed parts, for instance by extrusion, and hence can be produced quickly and economically.

Abstract: The invention relates to a piston pump for a slip-controlled hydraulic vehicle brake system. To make a piston of the piston pump easy and inexpensive to manufacture, the invention proposes that the piston be comprised of a sleeve-like shaped part and a valve seat part that is made of plastic and is press-fitted into the shaped part. A high-pressure-side sealing lip is formed onto the valve seat part and is of one piece with it. By means of a tubular support body, a restoring spring is supported on the valve seat part spaced apart from a valve seat of the valve seat part and spaced apart from the sealing lip, which prevents the valve seat and the sealing lip from being impaired by the force of the restoring spring.

Abstract: A piston pump for a hydraulic brake system of a vehicle with slip control. The piston pump has a piston which is received in a bush that is inserted into a cylinder bore of a pump housing that is closed in pressure-tight fashion by a closure part. For simpler assembly, the closure part is connected to the bush by means of a snap or detent connection. As a result, a preassembled unit that can be manipulated easily before insertion into the pump housing is obtained in a simple way.

Abstract: A piston pump intended especially for use in a slip-controlled hydraulic vehicle brake system. The piston pump is inserted into a cylinder bore, the piston pump has a piston, a bush, and a closure element that tightly closes the cylinder bore. The closure element is joined radially movably to the bush, for instance via caulking. This joint has the advantage that the piston pump can be assembled into a compact, easily manipulated, and sturdy component unit, and that the closure element and the bush are aligned with one another on being inserted into the cylinder bore.

Abstract: The invention is directed to a piston pump for a hydraulic vehicle brake system. For simple and inexpensive manufacturability, the piston pump embodies an outlet conduit as a groove in a sleeve bottom and a sealing part. As a result, the sleeve and the sealing part can be manufactured in a non-cutting manner by means of forming. Another advantage of letting the outflow conduit into the sleeve bottom is that the outlet conduit is disposed a small distance in the axial direction from a valve seat of an outlet valve, which counteracts noise production.

Abstract: A piston pump for a slip-controlled hydraulic vehicle brake system. For the sake of economical production, the piston pump is embodied with a plastic bush and with a needle of a needle bearing as the piston, and that an inlet valve is accommodated in a valve seat part (96) that is inserted into the bush (16). The invention has an advantage that both the inlet valve and an outlet valve can be mounted coaxially on the bush, and that the bush, because of its elasticity since it is made of plastic, brings about a favorable closing performance of the two valves.

Abstract: A piston pump which is intended for use in a vehicle for a hydraulic, slip-controlled braking system. To enable producing the piston pump inexpensively, a bush is made without undercuts as an upset part integrally with a bottom which has a valve seat for the outlet valve of the piston pump.