Abstract: A sealing device for forming seams in heat-sealable packaging materials is disclosed having an electrical resistor heating element for generating heat. In order to transmit heat to a sealing surface of the sealing device in such a way that uniform temperature distribution is attained on this surface, a sheath of a highly heat-conductive metal, such as aluminum, is provided between the heating element and the sealing device. The sheath is fitted tightly into the sealing device.

Abstract: A device is proposed for controlling a flowthrough cross section in a controlled line, in particular in a line carrying operating medium in internal combustion engines, in order to exert influence on the idling rpm of the engine. The device includes an actuation member comprising an immersion-coil magnet system which engages an actuation shaft with which a first valve member and a second valve member are connected. The coaxial guidance of the actuation shaft in the valve housing is effected by means of two guide diaphragms held in place relative to one another by attachment to the housing on their circumference. The valve members are identical in shape and each cooperates with a valve seat provided in a valve plate in the identical direction. The air flow may be effected via inlet apertures provided in the tubular section of the valve housing exhausting via the opened valve seats to outlet apertures in the cap.

Abstract: A vane-piston pump having a rotor supported eccentrically in a pump housing. The rotor is provided with slits for the passage through it of the vanes, and sealing strips are disposed at either side of the slits. The vanes slide along these sealing strips. Each sealing strip is subjected to the force of its own spring, and under the force of this spring, each sealing strip is pressed against the vanes.In this manner the spring forces can be kept smaller, so that friction is reduced. The vane-piston pump is preferably used in motor vehicles for generating compressed air in order to operate exhaust-gas treatment apparatus.

Abstract: A fuel injection pump is proposed in which the quantity adjustment member has a travel limitation device in the form of an adjustable stop, which is adjusted in accordance with the displacement of an adjusting piston in accordance with a contour formed in the jacket face thereon. The displacement of the adjusting piston is effected via rpm-dependent pressure of the suction chamber counter to the force of a restoring spring and counter to a pressure which can be established with the aid of a pressure control valve in accordance with engine operating parameters. The adjustment of the stop is thus effected with the high work capacity of the suction chamber pressure, and the limitation of the adjustment is attained with the aid of the modulated pressure diverted from the suction chamber pressure.

Abstract: A method is proposed for the measurement of a medium, in particular of the air aspirated by an internal combustion engine, in a flow cross section and for correcting the flow rate value (q) furnished by a flow rate meter in the event of a pulsating flow. To this end, by measuring the pressure of the medium (p.sub.m) at a restriction and by comparing it with a pressure value (p.sub.s) for steady flow associated with the measured flow rate value (q), the pulsation amplitude (a) is determined and is multiplied via characteristic value memories for the flow rate values (q), in order to correct an average-value error and/or to correct the error in the event of reversed flow, with a correction value (k) in order to form a corrected flow rate value (Q).

Abstract: A short-circuit-resistant trigger circuit layout is proposed for an electrical consumer for motor vehicles. The trigger circuit layout is located in series with a switching transistor, which is preceded in turn by an operational amplifier whose negative input is coupled with the junction point of two resistors parallel to the transistor and whose positive input receives both an average constant potential and a dynamic switching signal. In case of error, that is, in case of a short-circuit consumer, the transistor, which has initially been switched on, switches back into its blocked state after a predetermined time constant has elapsed. The short-circuit current flowing during this open phase can be limited by means of a resistor in series with the transistor.

Abstract: A circulation classifying chamber having a coarse particle discharge duct connected to a peripheral position thereof and a fine particle discharge duct connected thereto about an axis of circulation, is provided with a baffle member, a nozzle and, as necessary, a rectifier. Particulate materials jetting out of the nozzle on high velocity gas flows violently collide with the baffle member to be crushed and given components of velocity in a direction of flow in the circulation classifying chamber. Thus, crushing and classification proceed in parallel.

Abstract: Method for the production of electrolytic lead from lead containing solutions resulting from both primary extraction processes and scrap processing operations, consisting in the use of insoluble anodes made of uncoated graphite for oxygen evolution, together with noncontinuous cathodes for the production of lead, with the presence of additives in the electrolyte.

Abstract: A hinged-cover tank truck, for on-site collecting of used deep-frying grease, has a hydraulically powered winch for lifting, swinging and dumping the semi-solid grease from large containers to be emptied and then left at the collection site. A hot-water bath is mounted on the truck so that the container can be immersed therein long enough to melt the periphery of the semi-solid grease mass to facilitating its dumping.

Abstract: An apparatus for measuring the mass of a pulsating medium flowing in a flow cross-section, in particular for measuring the aspirated air mass of internal combustion engines. The apparatus includes a temperature-dependent measuring resistor, whose temperature and/or resistance is regulated in accordance with the mass of a flowing medium. The measurement signal (U.sub.S) representing the mass of the medium can be influenced in accordance with the flow direction by use of a pressure-sensing element which has corresponding electrical contacts and when there is a flow reversal the pressure-sensing element, via a correction circuit, suppresses the delivery of the measurement signal (U.sub.S) to an electronic control unit. By use of the correction circuit it is also possible to subtract the amount measured during a reverse flow from the measurement signal made during flow in the desired flow direction. As a result, an error in the measurement signal (U.sub.S) during pulsating flow is prevented.

Abstract: An electronically controlled or regulated fuel metering system for an internal combustion engine having one sensor each for the air flow in the intake tube and for the throttle valve position is proposed. In accordance with the signals of these sensors, influence can be exerted upon at least one of the operating states of lambda regulation, full load and fuel quantity limitation. The fundamental concept is that not only the air flow rate signal or only the signal relating to an opened throttle valve should be evaluated as a full-load signal but that the full-load state is presumed to exist when, with the throttle valve opened, the air throughput in the intake tube simultaneously exceeds a predetermined value as well. The same condition applies to full-load enrichment. The overall result is cleaner exhaust gas.

Abstract: A method and apparatus for determining the injected fuel quantity in internal combustion engines having self-ignition are proposed. A performance graph is prepared which includes the injected fuel quantity per stroke in accordance with the injection duration, with the rpm as a parameter. In order to avoid a fictive 0 point, the injection duration is shortened by a predetermined period of time and multiplicatively linked with an rpm signal, while linear rpm correction curves having a dependency of the rpm voltage on the injection duration can be assumed. At the output of an integrator by means of a sample and hold circuit, an injection quantity signal is produced whenever the rpm signal (Un) is supplied to the integrator for the integration process and the duration of the integration is determined on the basis of the injection duration signal (SD).

Abstract: A fuel injection pump, embodied as a series pump, has a governor rod for rotating a pump piston provided with an oblique control groove. The pump piston further has at least one longitudinal groove, by means of which upon congruence with a fill and relief opening of the pump work chamber, a zero fuel supply can be established. With electrically controlled actuation of the governor rod, the appropriate adjustment of the end stops of the governor rod or the appropriate embodiment of the pump piston assures that the opening comes into congruence with a longitudinal groove adjoining the full-load working zone of the pump piston before the end stop of the governor rod is reached.

Abstract: The invention relates to an rpm governor of a fuel injection pump for internal combustion engines, in which a positive or negative adaptation is attainable by way of a hydraulically actuated piston. The fluid pressure determining the piston position is variable by means of a valve in an outflow conduit from the control pressure chamber.

Abstract: In order to prevent erosion of the pump housing caused by the fuel stream exiting from the return flow openings at the end of injection, it is proposed that the fuel injection pump be provided with an impact protection ring pushed over the cylinder bushing. Adjacent to a cylindrical wall portion, the impact protection ring carries a radially outwardly bent, circular-annular collar. The collar rests on an abutment shoulder disposed above the return flow openings and has an end face whose area is a multiple of the cross sectional area of the cylindrical wall portion. The impact protection ring encloses an annular chamber, provided with a narrow radial gap (s), in the vicinity of the return flow opening and is pressed by a snap ring against the abutment shoulder.

Abstract: A air flow rate meter apparatus includes an air bypass line, which branches off from a filter housing on the air intake fitting of an internal combustion engine and discharges at a restriction of the air intake tube upstream of a throttle valve. An injection valve is disposed in the restricted section, ejecting fuel in the direction toward a throttle valve. The air bypass line extends vertically and has a first U-shaped section, the connecting portion of which is located at a lower level than its legs. A temperature-dependent resistor in the form of a hot wire or hot strip is disposed in the downstream leg of the first U-shaped section, so that during a burnoff procedure of the temperature-dependent resistor a flow is effected in the direction toward the mouth of the air bypass line, thus preventing the aspiration of a fuel-air mixture into the air bypass line and thus avoiding the danger of ignition with the possible destruction of the temperature-dependent resistor.

Abstract: A fuel injection pump, the volume adjustment member of which has a limiter of its play in the form of an adjustable device, which is movable in accordance with the displacement of a control piston in response to a contour provided in the control piston. The displacement of the first control piston occurs in accordance with the pressure of the air supplied to the combustion chambers of the internal combustion engine, and this in turn is controlled with the aid of a pressure element. The pressure element actuates a control piston, with the aid of which a control pressure is created which actuates the first control piston. The control pressure, at the same time, acts on the pressure element by way of the second control piston in the form of return pressure. In a state of equilibrium the control pressure circuit is separated from the pressure source.

Abstract: A plurality of molding boxes having a common center line are disposed in an aligned manner in a horizontal guideway located, in the direction in which pressure is exerted and expulsion is effected, between a pressure piston and an outwardly pivotable pressing device and the molding devices are displaceable in the guideway. One pattern carrier plate is provided between each of the individual molding boxes, and the pattern carrier plates can be moved in and out when the molding boxes are apart. A tilting device is disposed at the outlet of the machine, which selectively either allows pressed mold bodies to pass by it with the position of their seams unchanged, or tilts the mold bodies, pressed in pairs, by an angle of 90.degree..

Abstract: An electronically controlled fuel metering system for an internal combustion engine is proposed which has mixture regulation which can be switched on and off depending upon the operational state of the engine. The system for mixture regulation includes an integrator with an alternating integration direction which can be switched on during steady and quasi-steady operational states. It is further proposed that the integrator time constant be selected in accordance with operating characteristics of the engine and time during the regulation period. For mixture metering, average values are used based on switching values, for instance of a .lambda. sensor in the exhaust pipe. The proposed system is also useable in connection with learning regulating systems, in which corrected values for .lambda.=1 or values for .lambda..noteq.1 computed on that basis and these values then serve as initial values for new regulating cycles.

Abstract: The vane-cell pump of a fuel injection pump for internal combustion engines has one or more adjustable throttle restrictions disposed on the intake side and/or on the compression side.By adjusting the particular throttle restriction, the slope of the characteristic curve of the course of the supply pump pressure can be influenced. In this way, it is possible to effect an increase in the slope over the entire rpm range, an increase only in the upper rpm range, or a lesser increase in slope only in the upper rpm range. The invention contemplates several embodiments which essentially cover location of the throttle restriction in the fuel injection pump.