Abstract: A fuel injection device having an injection valve on which an atomizing grid is arranged. The disk-shaped atomizing grid is arranged downstream of a valve seat face and is equipped with an atomizing structure which at least partially possesses variations in cross section in the axial direction, over the thickness of the atomizing grid. As a result of the geometry of the atomizing grid, the fuel is atomized particularly finely into very small droplets without auxiliary energy. The fuel injection device is particularly suitable for use in fuel injection systems of mixture-compressing spark-ignition internal combustion engines.

Abstract: A known shock absorber including a throttle cross section of a throttle passage which is electrically variable via a magnet, to adjust damping of fluid between separate work chambers. If the magnet has no current in the event of an electrical defect, then the throttle cross section of the throttle passage attains its minimum opening, and maximum damping is attained the shock absorber includes a different further throttle passage which is uncovered in the event of an electrical defect. As a result, in the event of an electrical defect an arbitrarily preselectable, preferably approximately average damping is brought about by the further throttle passage.

Abstract: A vibration motor having a disk-shaped stator containing a piezoelectric excitation system, a disk-shaped rotor aligned parallel to the stator and mounted on a driven shaft in a manner fixed against relative rotation, and a pressing element that presses the rotor and stator together axially. To assure free travel of the driven shaft when the motor is currentless, the pressing element is embodied as a force-transmitting element that changes shape as a function of temperature, for instance a compression spring of memory metal. In motor operation, the element is kept at a temperature above its temperature point for the shape change, and it is disposed such that the pressing force between the rotor and stator diminishes as a result of the shape change ensuing if the temperature drops below this temperature point.

Abstract: A pressure-actuated valve which includes an effective pressure face by which the valve is opened, the face on which the pressure difference that opens the valve acts is completely independent of an openable flow opening. The effective pressure face and the openable flow opening can be selected arbitrarily within wide limits, independently of one another. The pressure-actuated valve according to the invention is preferably suitable for shock absorbers.

Abstract: An adjuster for an adjusting device which pivots about a pivot shaft, particularly for a throttle valve of an internal combustion engine. The adjuster has an electric control motor for pivoting the adjusting device and a safety restoring unit for moving the adjusting device to a defined basic position upon an interruption to the supply of power to the control motor. To produce the power consumed by the control motor and associated with this to reduce its structural size and weight, the restoring unit is embodied such that its restoring force acting upon the adjusting device is effective solely upon an interruption to the supply of power to the control motor.

Abstract: A hydraulic shock absorber with automatically adjustable damper force which actuates an electromagnetic rotary adjuster for a control slide that monitors a sole flow cross section. The rotary adjuster is embodied as a permanently excited single-winding rotary adjuster, and because of its permanent magnetic poles in the rotor, even when it is currentless it furnishes a torque that assures safety resetting of the rotary adjuster if the current fails. The hydraulic shock absorber is intended for controlling the undercarriage of a motor vehicle.

Abstract: In a circuit arrangement for operating a multiphase synchronous motor (10) on a direct current voltage main current valves (15-18), which are successively actuated via a ring counter (38), are connected in series with the phases (w.sub.1 -w.sub.4) of the armature winding (12) of the motor (10). A ring counter switching device (19) advances the ring counter (38) by pulses derived from the comparison of in voltages dropped across two blocked current valves (15-18). To restrict the self control range of the motor to an angular range which is much smaller than half a period, of the voltage drop decreasing in the course of time is additionally compared with a set voltage (k U.sub.S) by the ring counter switching device (19) and the ring counter advancement is enabled only for as long as this voltage drop is greater than the set voltage value.

Abstract: A shock absorber for use in motor vehicles which includes a piston within a packet, inside the piston the entire quantity of the damping fluid exchanged between two work chambers flows via a throttle cross section the size of which is defined by an electromagnetic adjusting device comprising primarily a magnet coil and an armature. The armature is annular and merges with an annular control slide provided with a slide control edge, which slide, in cooperation with a piston control edge on the piston determines the size of the throttle cross section. The control slide and armature are statically in pressure equilibrium, and because of their annular embodiment they have only a slight weight, so that the shock absorber operates with short adjusting times. By a defined profile of the slide control edge or piston control edge, certain damping characteristics are attainable.

Abstract: A shock absorber useful in motor vehicles which includes a piston inside of which an entire quantity of a damping fluid exchanged between two work chambers flows via a throttle cross section the size of which is defined by an electromagnetic adjusting device comprising primarily a magnet coil and an armature. The armature is annular and merges with an annular control slide provided with a slide control edge, which slide, in cooperation with a piston control edge on the piston determines the size of the throttle cross section. The control slide and armature are statically in pressure equilibrium, and because of their annular embodiment they have only a slight weight of their own, so that the shock absorber operates with short adjusting times. By way of a defined profile of the slide control edge or piston control edge, certain damping characteristics are attainable.

Abstract: An electric control motor is proposed, which serves to adjust final control elements in closed- or open-loop control systems, in particular for varying the position of throttle devices provided for metering fuels in internal combustion engines. The control motor includes a housing, in which an electromagnetic coil and an armature are disposed, the armature being rotatably supported upon a shaft providing spaced air gaps therewith and with magnetic poles. The magnetic poles are disposed on arcuate conducting bodies, which are disposed in spaced relation on a nonmagnetic carrier body. At ends remote from the magnetic poles, the conducting bodies communicate with one another via a magnetically conductive plate.

Abstract: Commutation of the stator windings of a synchronous motor energized by a d.c. supply is controlled by comparison of voltages induced in two stator windings neither of which is a winding previously energized nor a winding about be energized. For speed control, turning on of the winding next energized can be delayed controllably. Motor current during start-up or overload can be limited by chopping, with a variable keying ratio, the d.c. supply connection to the motor during the first 80% of the period of energization of each stator winding. For reducing delay in starting, the rotor may be brought into a particular position automatically every time the motor is stopped or, in the case of a fuel pump motor for an injection type internal combustion engine, just before starting the engine through a supplementary contact controlled by the ignition key. Starting up can be provided by two initial pulses of commutation provided by means of an oscillator and two transistors.