Abstract: A fuel injection valve, particularly an injection valve for fuel injection equipment of internal combustion engines, having a pump piston that can be activated using a piezoelectric or magnetostrictive actuator for exerting a translatory pump motion. A spray-discharge nozzle with at least one spray-discharge opening is hydraulically connected via a fuel pressure line to the pump piston. The spray-discharge nozzle opens when the fuel pressure produced by the pump piston in the fuel pressure line exceeds a predetermined threshold. In the fuel pressure line, at least one non-return valve is arranged so that it opens in the direction towards the spray-discharge nozzle and closes in the opposite direction.

Abstract: A method and an apparatus for controlling the brake system of electric drive vehicles are proposed, in which the control of a friction brake and of an electric regenerative brake is divided between two pedals. The regenerative brake is controlled as a function of the actuation of the accelerator, independently of the extent to which the brake pedal is actuated.

Abstract: A device for connecting an external antenna to at least one transmitting and/or receiving unit provided in a motor vehicle, the external antenna being connected via an antenna connection that has been passed through a first orifice in the vehicle body to an antenna cable linked to the at least one transmitting and/or receiving unit and being secured with anti-rotation locking to the vehicle body by a plug passed through a second orifice in the vehicle body, to render possible the connection of an additional transmitting and/or receiving device to the antenna. The plug is configured to accommodate a plug-in connection connected to the antenna. The plug-in connection is connectible to the mating connector of an antenna cable linked to at least one further transmitting and/or receiving unit.

Abstract: In known retaining devices for electric motors, rotationally flexible retaining elements on the order of leaf springs are provided between a receiving housing and the electric motor and serve to decouple noise of the electric motor. The novel retaining device for an electric motor includes retaining elements that extend axially between a receiving housing and the motor housing. These retaining elements enable low-frequency decoupling below the frequencies to be decoupled; on the occurrence of natural resonance when the electric motor is turned on and off or there are shocks from outside, the torsional motion of the retaining elements is limited by stop elements. The retaining device is especially well suited to electric motors of blowers.

Abstract: An apparatus for operating a positioning drive is proposed, in which a distance between two predefined positions is ascertained in the course of a reference run, and is used as the basis for a data set selection.

Abstract: The invention is directed to a method and an arrangement for controlling the torque of a drive unit of a motor vehicle. The desired torque or the actual torque of the drive unit is set into a relationship with a pregiven maximum permissible torque and the actual torque is limited or is reduced when the desired torque or the actual torque exceeds the maximum permissible torque. In one operating state, wherein the torque of the drive unit is increased by an additional loading, the maximum permissible torque is increased.

Abstract: A valve for controlling fluids, in which the valve member is adjusted by means of an actuating piston, which, together with a piezoelectric actuator piston, encloses a pressure chamber. In addition, the actuator piston and an affiliated piezoelectric stack are disposed in parallel radially next to the actuating piston, wherein upon excitation of the piezoelectric stack or adjustment of the actuator piston, the actuating piston executes a motion counter to the adjusting movement, and with its valve member, opens a relief bore.

Abstract: A fuel injection valve has a valve casing and a molded plastic sheathing which at least partially surrounds the valve casing, with sealing elements being provided on the outer circumference of the fuel injection valve for sealing the fuel injection valve with respect to a fuel rail; an intake manifold or the like. Each of the sealing elements has at least partial surface contact with the molded plastic sheathing, with the sealing elements being molded directly onto the molded plastic sheathing or molded into recesses in the molded plastic sheathing.This fuel injection valve is suitable in particular for use in fuel injection systems of internal combustion engines with spark ignition and compression of a fuel-air mixture.

Abstract: A micromechanical sensor includes a support of silicon substrate having an epitaxial layer of silicon applied on the silicon substrate. A part of the epitaxial layer is laid bare to form at least one micromechanical deflection part by an etching process. The bared deflection part is made of polycrystalline silicon which has grown in polycrystalline form during the epitaxial process over a silicon-oxide layer which has been removed by etching. In the support region and/or at the connection to the silicon substrate, the exposed deflection part passes into single crystal silicon. By large layer thicknesses, a large working capacity of the sensor is possible. The sensor structure provides enhanced mechanical stability, processability, and possibilities of shaping, and it can be integrated, in particular, in a bipolar process or mixed process (bipolar-CMOS, bipolar-CMOS-DMOS).

Abstract: A process and a device for controlling the brake system of a vehicle, in which in traction control and at the beginning of the control, a braking force build-up independent on the slippage takes place, which is stopped when a sizable braking effect is detected on the spinning wheel. Alternatively or in addition to this system, it is provided that, when the vehicle decelerates in active traction control, the braking force build-up pulses and/or the braking force decrease pulses are determined as a function of the measured slippage of at least one wheel, while outside these areas the pulses are determined so that the increase in braking force takes place in steps with the same change in the braking force.

Abstract: Administering of wake times in an interconnected assembly of several control devices and a time base control device is performed by transmitting by each control device a timely next wake time to the time base control device, comparing the transmitted wake times with one another, storing a timely next wake time by the time base control device, and upon reaching the stored wake time, transmitting by the time control device an actual time to the control devices.

Abstract: A circuit for operating an electric motor (10) has a triac (24) that is parallel to the electric motor (10). The triac (24) is acted upon by a first control signal (28) that is dependent on the voltage present at a first connection (11) of the electric motor (10). The triac (24) is further acted on by a second control signal (22) that is emitted as a braking signal by a motor-control circuit (19). The circuit of the invention, which includes a semiconductor component (24), permits both a braking of the electric motor (10) and the damping of an inductive voltage peak during the switch-off process of the electric motor (10). The damping of the inductive voltage peak is also assured after the separation of the voltage from an energy source (16).

Abstract: A controlled self operating vacuum cleaning system which comprises a stationary housing for the storage of a mobile vacuum cleaner apparatus and where the housing is provided with an automatically openable and closable closure allowing exit and entry of the mobile vacuum cleaner unit. The mobile unit is driven by an internal drive motor which is powered by one or more batteries carried by the mobile vacuum cleaner unit. At preestablished times and preestablished time intervals, the closure of the housing will automatically open providing for ingress and egress and the mobile vacuum cleaner unit will exit and randomly clean the carpet of a certain specified area for a predetermined time period. The mobile vacuum cleaner unit is provided with obstacle detectors for causing the mobile unit to move beyond an obstacle, if it contacts an obstacle, as well as detectors for detecting the edge of a staircase and the edge of a carpet to cause the mobile unit to remain on the carpeted area.

Abstract: The invention relates to a high pressure reciprocating pump, for a fuel injection system of an internal combustion engine, having at least one piston, which is displaceably supported in a piston guide provided in a housing and therein defines a work chamber. Supported in the housing is a drive shaft, on which a crank element is provided on which a stroke ring, is not rotatable in the housing. The crank element is rotatably supported, the stroke ring has a slide bearing face, associated with the piston on which face the piston is supported with a slide face, so that the piston can be acted upon by the drive shaft. To reduce the danger of so-called seizing of the bearing faces moving back and forth on one another when poorly lubricating media such as fuel and in particular gasoline are being pumped, it is provided that a relief chamber, formed by a recess in the slide face disposed on the piston and open toward the slide bearing face on the stroke ring, communicates with the work chamber.

Abstract: A device for operating a gas discharge lamp has a d.c.-d.c. converter which converts an input voltage based on a reference potential into two output potentials different from the reference potential. The gas discharge lamp is brought by a drive circuit to these output potentials having different absolute values.

Abstract: The invention relates to a hydraulic motor vehicle power brake system having a hydraulic pump which is connected to a hydraulic reservoir as an external energy reservoir and is connected to wheel brake cylinders, wherein the wheel brake cylinders are preceded by inlet valves and are followed by outlet valves. To improve the adjustability of a desired brake pressure in the wheel brake cylinders and to cut costs, the inlet and outlet valves are identical as continuous pressure limiting solenoid valves or as continuous pressure differential solenoid valves.

Abstract: The invention is directed to a method of operating a control system which includes a nonvolatile memory unit having memory banks and a volatile memory unit for storing programs and data. Access is permitted to only a single one of the memory banks of the nonvolatile memory unit at a given time point and the memory bank permitting the access is addressable by using addresses which are located within a memory bank address space. The memory bank address space is common to all memory banks and adapted to the size of the memory banks. The nonvolatile memory and the volatile memory are driven in such a manner that the memory bank permitting the access is only accessible in part. When an addressing attempt is made via an address, which is assigned to that part of the particular memory bank which is not accessible, the volatile memory unit is shifted into a state permitting an access and the volatile memory is addressed via the address.

Abstract: A fuel-feeding unit for supplying a fuel from a fuel tank is described which has a particularly compact structure. The described fuel-feeding unit has a fuel pump driven by an electrical motor, a low pressure side preliminary fuel filter and a high pressure side main fuel filter arranged in a housing. The housing has a central compartment for the electrical motor and a circular compartment surrounding the central compartment in which the main fuel filter is located. The housing is closed and sealed by means of a housing cover that has a fuel outlet connector and an E-connector for electrical power lines. The pump impeller of the fuel pump arranged in a pump compartment inside the housing has a diameter which is larger than the diameter of the central compartment and the fuel is fed from the fuel pump directly into the circular compartment.

Abstract: A process for applying materials to a carrier, for which the material is atomized just prior to applying it by compressed air that is supplied separately. The process is particularly suited for the application of electrically conductive material to carriers of ceramics materials.

Abstract: To allow for greater ease of rod installation in a bone fixing screw having a threaded portion, and to prevent an installed rod from slipping out of place, there is formed at an outer end of a thread 11, a rod-receiving portion 12 having an opening obliquely placed with respect to the axial direction of the thread 11, so that a rod 20 can be inserted in a slantwise direction, and when it is stored in the rod-receiving portion 12, the rod 20 is secured in place with a retaining screw 14.