Abstract: An air flow rate meter for ascertaining the mass of the air flowing through an intake tube of an internal combustion engine. The air flow rate meter includes a temperature-dependent measuring resistor, which as a resistance wire is stretched out in an aperture of a carrier body and is disposed, as is a reference resistor, as an element in a common electrical bridge circuit. The carrier body protrudes into a flow cross section through which the air flows, and the reference resistor is wound, in the form of a reference resistor wire, on a partial segment spaced apart from the aperture. A compensating resistor is disposed in the aperture upstream of the measuring resistor and spaced apart as far as possible from the reference resistor.

Abstract: A pressure control valve which serves to control a determined medium pressure. The pressure control valve includes a medium chamber with an inlet opening and an outlet opening for the medium to be controlled, separated by a membrane from a spring chamber with a valve spring. On the membrane, a valve member is floatingly disposed via a ball-shaped support member, which acts together with a valve seat. The outlet opening is disposed upstream of the valve seat in such a manner, that during a medium pressure to be controlled the valve member lies upstream of the outlet opening and together with the latter controls the flow of the medium to the valve seat, while during a medium pressure below the valve member descends with throttling action to a greater or lesser degree into the outlet opening and blocks the valve seat at a predetermined lower medium pressure.

Abstract: A displacement pickup for detecting positions of an adjusting device, in particular an adjusting device of fuel injection pumps. In an advantageous manner, an adjustment of the displacement pickup can be performed with the aid of a cylindrical tang, which is displaceable and fixable in a through bore in the wall of a housing receiving the adjusting device and through the interior of which an adjusting device of the displacement pickup can be adjusted from outside the housing. In a displacement pickup advantageously embodied as a rotary potentiometer, a contact means of a resistor (R.sub.a) of the resistance course of the potentiometer can thus be adjusted.

Abstract: A power steering apparatus with a pressure supply for additional loads, the steering pump of which has a plurality of feed chambers separate from one another. The additional loads, such as a brake booster and/or a level regulating device, are connected to one of these separate feed chambers. A reversing valve enables a greater supply capacity to the steering gear by shutting off the additional loads.

Abstract: An electro-pneumatic brake system with a pressure control valve switched ahead of the brake cylinders is proposed, which connects the brake cylinders either with outside air or with a storage tank. The pressure control valve is directly operable by an electro-magnet or, in the case of its loss, by an operating piston and is formed as a double-seat valve with large flow-through diameters. It can be combined with stop valves in order to make possible a multichannel pressure control. The compressed brake system is intended for use in motor vehicles, especially in utility vehicles.

Abstract: The subject of the application is a hydraulic vehicle brake system with brake force amplification and anti-skid regulation by use of anti-skid regulating valves and having at least one closed brake circuit, the main brake cylinder piston of which is acted upon by a pilot pressure fed in by a brake valve. In addition, the anti-skid regulating valves are preceded by a valve assembly which upon the actuation of the anti-skid regulating valves disconnects the anti-skid regulating valves from the main brake cylinder and connects them to a pilot pressure. This switchover is effected in the presence of an anti-skid regulating signal and/or a redetermined deflection of the brake pedal of a main brake cylinder piston.

Abstract: A method is proposed for measuring the flow rate of the pulsating air mass aspirated by an internal combustion engine when there is a backflow. To this end, an integration process in one direction is initiated at a zero passage of the flow rate measurement value (U.sub.S) of the air flow rate measuring device at a given time, which indicates the beginning of the backflow; this integration process is continued until a subsequent zero passage occurs. Directly thereafter, an integration process in the opposite direction is initiated, which is terminated at a time when the latter integration value returns to zero. During the first integration process the flow rate measurement value (U.sub.S) is set to the value of zero and is not deregulated until the termination of the second integration process, so that it then jumps to a value which is subtracted from the flow rate measurement value, and the result is a flow rate measurement value from which the backflow has been excluded.

Abstract: A method and an apparatus are proposed for adapting the exhaust gas recirculation rate in internal combustion engines, in particular Diesel engines. In order to prevent the smoke which is produced at first in new engines, or when injection nozzles or the like are replaced, an adjustment is made in the exhaust gas recirculation rate, acting as a supplement to the change in this rate which is conventionally made, the supplementary adjustment being preferably performed in stages and with reference to the function of the duration of operation from the time the varying operating conditions begin. The number of injection events is counted and successive memory locations are triggered at time intervals, effecting an adaptation of the exhaust gas recirculation rate up to the final status, each stage in adaptation being stored permanently in memory as it is attained.

Abstract: For adjustment to various formats in accordance with the products to be packaged and the packages used, structural parts, tools and devices of a packaging machine are equipped to be adjustable. In order to be able to effect adjustment as intended and quickly by means of displaceable parts equipped with set screws at the changeover locations, the packaging machine has a mobile drive unit, which can be coupled with the set screws of the various changeover locations. The drive unit is controlled by a control unit which is programmable in accordance with the format, and is used by the operator at a given changeover location as indicated by the control unit.

Abstract: An electromagnetically actuatable valve which serves in particular to inject fuel into the intake tube of internal combustion engines operating with fuel injection systems. The fuel injection valve includes a valve housing, a shell core having a magnetic winding and a flat armature, which is firmly connected with a valve element which passes through a central guide opening in a guide diaphragm and cooperates with a fixed valve seat. The guide diaphragm has a fastening zone and together with the central guide opening cut out of a centering zone of the guide diaphragm guides the valve element in the radial direction toward the valve seat. The fastening zone is connected via struts with an annular guide zone on which the flat armature, under spring tension, rests with a concentric guide edge and is guided in a plane parallel to the end face of the shell core. The centering zone of the guide diaphragm is connected in turn via struts with the guide zone.

Abstract: In the pump work chamber of a fuel injection pump, the main fuel delivered by a first metering valve is admixed with at least one further additional fluid by means of a second metering valve via a second inflow conduit. The two metering valves inserted into the inflow conduits and being electromechanically actuatable receive control pulses (I.sub.Z1, I.sub.Z2) dependent on operating characteristics (n, T, S, L) from an electric control unit. By means of the metering into the pump work chamber, the respective amounts of the fuel components are very well mixed or emulsified and pumped to the injection nozzle. The electric triggering of the metering valves enables a rapid adaptation from one stroke to another of the mixture ratio of the various fuel components to the instant operating condition of the internal combustion engine.

Abstract: A device for measuring the mass of a flowing medium. The apparatus includes a carrier, to which at least one temperature-dependent resistor layer is applied; on opposing sides this layer is partially overlapped by electrical conductive connecting layers having low electrical resistance and is joined to these layers in an electrically conductive manner. The temperature-dependent resistor layer and the connecting layers are covered with a thin glass layer, except for a respective contact section at each end. Securing sections bent at an angle in the form of claws, each belonging to one electrical connection, are joined in an electrically conductive manner to the contact sections, and the electrical connections are embodied on or joined to holder bodies.

Abstract: For a speed governing system for an internal combustion engine with self-ignition, which includes an electromagnetic final control element for influencing the injection quantity and a control unit having a governor for controlling the final control element, provisions are proposed which give the governor a high dynamic amplification in the range of a drop in the engine rpm, a dynamic amplification that drops from a higher value to a lower value in the range of a sudden drop of engine speed, that is, an rpm undercutting, and a flattened governor characteristic in the vicinity of the ends of the control range. A governor of this kind reacts very flexibly to changes in rpm and in particular does not enter a saturated state, and it adjusts to a new control state without disruptive reacceleration phenomena. A governor of this kind is particularly well suited for motor vehicles having a Diesel engine with a relatively large number of cylinders.

Abstract: A damping device of an air flow rate meter disposed in the intake tube of an internal combustion engine, which air flow rate meter serves to damp the effect of intake-tube recoiling upon the air flow rate meter. The damping device includes a guide bushing, which is firmly connected with a bearing shaft of the air flow rate meter and has an outer Thread-like groove. A blocking body provided with a matching inner thread-like groove is rotatable on the guide bushing and is supported such that it is axially displaceable counter to a compression spring in the direction toward a detent body attached to the housing. The detent body and the blocking body have latch protrusions oriented toward one another, which upon an axial movement of the blocking body toward the detent body are capable of meshing with one another and stopping the movement of the air flow rate meter in the event of intake-tube recoiling.

Abstract: A work vehicle with a rolling-control mechanism, having a ground-engaging implement to be connected via a three-point link mechanism adapted to be free to effect adjustment with respect to the connection positions, has a sensor to detect slanting of the vehicle body. It also has electrical circuitry for correcting the control gain based on the detection results thereof, in response to the adjustment of the implement-attaching width and of the connection positions of three-point link mechanism. It may further be provided with a sensor and a control mechanism for effecting the control to minimize errors as are particular to using, as the rolling-control mechanism, torsional displacement in the three-point link mechanism.

Abstract: A pipeline needing leakage repair and/or prevention is filled with a liquid sealant in foamed state of the aqueous emulsion type. Then an excess amount of the sealant in the center of the pipeline is drained from the pipeline, and the sealant remaining on the interior wall of the pipeline is allowed to cure wherein the sealant contains fine particles of inorganic oxide weakly adhering to one another into aggregations, said aggregations easily breaking into such fine particles that they can enter and plug fine cavities of the interior of said pipeline.

Abstract: A control device capable of selectively controlling either one of two controlled members with the use of one control means.The control device incorporates a link and a lock member. The pivot structure of an arm between the link and the control means is improved, thereby to provide a smooth swing of the link.

Abstract: The apparatus for producing pouch packages in pairs has two tube shaping devices disposed beside one another and two crosswise closure devices. To prevent having to stop both tubular pouch shaping devices at the same time in the event of an interruption or malfunction, or when changing a roll of packaging material, the crosswise closure devices are disposed on separate carriers. The carriers which are movable up and down individually can be coupled with a reciprocating element, which is moved incrementally up and down by a drive mechanism.

Abstract: An oil return device for a refrigeration system which is placed in the suction line between the evaporator and the compressor to insure that the lubricant oil in the gases is returned to the compressor to prevent damage to the compressor. The device includes an inner tube within an outer tube each of which are connected to a tee fitting so that fluid flows downwardly between the two tubes and upwardly in the inner tube only. A venturi effect is produced at the end of the inner tube which speeds the fluid sufficiently to carry the oil along with the refrigerant.