Abstract: The chiseling or trimming machine serves primarily to deburr welding seams from frames welded together of profiled plastic parts, such as are used for facades, doors and windows. The machine has a bearing surface on which the workpiece to be machined is placed against a stop angle and held firmly by means of holder cylinders. Furthermore the machine has a workpiece carrier displaceable with a transport device, and the tool holder supporting the chiseling or trimming die is supported on the tool carrier such that it yields in the upward direction in response to pressure. The bench machine is embodied as a hand-operated machine such that the bearing surfaces as well as at least one handle are disposed on an upper crosspiece of the tool carrier with its transport device, and that this crosspiece is connected by means of two rods with a lower crosspiece disposed parallel to the upper bearing surface.

Abstract: A control valve for the application of a desired pressure in a working circuit, having a pressure chamber connected with a pressure source, a control chamber separated during the rest position of the valve from the pressure chamber by a first seat valve which connects with a working circuit and a pressureless connection during the rest position of the valve, and finally the control valve has an activating piston 14, by means of which, when the control valve is operated, first the connection between the control chamber and the pressureless connection is interrupted and then the first seat valve is opened. Additionally, a further seat valve is interposed into the connection between the pressure source and the pressure chamber, and a control piston 7 is provided to open seat valve 6 when exposed on the one side to the pressure in the pressure chamber 9 and on the other side to the pressure applied in the working circuit.

Abstract: A regulating device is proposed for control variables of an internal combustion engine, in particular for the fuel metering signal and the ignition signal, which has an intervention capability for signals of at least one knocking sensor on the engine via a knocking-signal evaluation circuit; this knocking-signal evaluation circuit includes a frequency recognition circuit and preferably an amplitude recognition circuit, and it detects and evaluates the knocking signal only during specific times or angles relating to the ignition signal. The frequency recognition circuit is realized by means of two counters. The counting range of the first counter marks the value of the upper threshold frequency which can be recognized, while the counting range of the second counter characterizes the frequency band.

Abstract: A fuel injection apparatus for internal combustion engines, in which the onset and end of injection are determined by a hydraulically actuated control slide. The injection pump of the apparatus, which is preferably combined with an injection nozzle to form a pump/nozzle unit, has a pump piston embodied as a differential piston, whose section having the larger diameter serves as an auxiliary pump piston and generates a control pressure (p.sub.S) actuating the control slide. During its compression stroke the control slide, in order to initiate the onset of injection, closes an overflow line leading out of the pump work chamber; and during its return stroke, which is effected by the pressure drop in the control line, the control slide relieves the overflow line in order to control the end of injection. The control pressure (p.sub.

Abstract: Method and apparatus for controlling the combustion process of an internal combustion engine having at least one cylinder and an ignition device for initiating ignition of a combustible charge, whereby:(1) the moment of ignition of the charge at a position F in the combustion chamber is sensed, the position F being spaced from the ignition device so that the flame front of the flame initiated by the ignition device can only arrive at the position F after a predominant portion of the charge has been burnt;(2) at least the direction of a deviation of the piston moving within the cylinder from a selected piston position K is sensed at the moment of ignition at the position F; and(3) the ignition timing and/or composition of the charge is automatically regulated in accordance with at least the sensed piston deviation to achieve approximate F-K coincidence.

Abstract: A regulating device is proposed for an internal combustion engine having a throttle device and a controllable bypass channel in the intake tube, where regulation is effected to a minimum volume (Q/n) in overrunning above a predetermined rpm value and to the idling rpm below this rpm value. The purpose of this regulating device is the substantially precise preliminary control of an adjustment member in the bypass channel around the throttle valve to the opening cross section required for idling. The regulating device includes a switchover device (alternating switch), to the input terminals of which the output signals of the regulators for volumetric value and for idling rpm are applied. In the case of temperature-dependent minimum and threshold volumetric values, good warmup performance can be attained.

Abstract: A braking-force booster which contains a pressure source, a pedal operated control valve and at least one main brake cylinder; a piston which creates the brake pressure, is exposed to the pressure created in the main brake cylinder by means of the control valve, wherein the control valve, dependent on the pedal displacement, interrupts a connecting channel between the main brake cylinder and a pressureless connection and temporarily creates a second connecting channel between the pressure source and the main brake cylinder. The pedal operated control valve contains a plunger movable by the pedal which extend into the main brake cylinder, and the first connecting channel is integrated into the main brake cylinder piston. The first plunger has a valve closing member for shutting off this connecting channel during the corresponding approach.

Abstract: A fuel injection device is proposed which has a free piston hydraulically driven by a pump piston and controlling the relieving of the pump work chamber. To this end, the free piston is embodied in two parts, comprising a control piston and a relief piston displaceable relative thereto and oriented toward the pump work chamber. The two pistons enclose between them a relief chamber, which at the end of supply can be made to communicate via a relief conduit with a chamber of lower pressure. This free piston is also usable with fuel injection pumps which supply the injection quantity via a long pressure line to the injection nozzles located on the engine; however, it is particularly advantageously usable with a pump/nozzle, in which the injection pump and the injection nozzle are combined into a single component.

Abstract: A flyweight governor comprising first and second sets of flyweights disposed pivotably on a flyweight support, the flyweights of the first set are arrested by stops after having traversed an idle speed angle of traverse (.alpha..sub.LL), on which stops the flyweights of said second set rest only after having traversed the total angle of traverse (.alpha..sub.max). The flyweight masses of the first set of flyweights acting only in the idle speed control have, in their position of rest, an outer contour which is, in comparison to said second set of flyweights, displaced further outwardly with an inclination angle (.beta..sub.LL) to the rotational axis (A) corresponding to the idle speed angle of traverse (.alpha..sub.LL).

Abstract: A method for producing an information carrier in the form of a card, such as an identification card or pass, as well as an information carrier produced in accordance with this method. The information carrier comprises a plurality of plastic layers combined with one another into a block, at least one of which contains a photograph of the bearer and/or his fingerprint and/or other readable or machine-readable data in the form of a photographic layer. This photographic layer is produced and incorporated into the sandwich of plastic layers making up the identification card in that a specially prepared film is exposed to light, developed, fixed and dries, and then the carrier layer of this film sandwich is removed from the emulsion after the emulsion has entered into an adhesive bond with a first plastic carrier layer, this adhesion being substantially greater than the adhesion of the emulsion to the film's auxiliary carrier, which is to be removed.

Abstract: A rotary fluid machine of the kind that is to be actuated by any fluid under pressure in which a rotor (15) carrying a piston member (15.sub.4) rotates continuously when the machine is in operation about the axis (AA1) of an annular chamber (21), the piston member (15.sub.4) is geared to rotary obturators (17.sub.A 17.sub.B) that rotate in sealing chambers 21.sub.1 in an annular member 21.sub.2 projecting into the annular chamber 21 about an axis (BB1, CC1) substantially parallel to said axis (AA1) of the annular chamber (21) and the rotary obturator has a recess into which a part of the piston enters during rotation to provide a working section in the cylinder as working fluid is fed to the piston. The machine is characterized in that the piston member (15.sub.

Abstract: A method and an apparatus are proposed for determining and controlling an exhaust gas recirculation rate in internal combustion engines (Diesel engines), wherein an adjusting member in the exhaust gas recirculation line is adjusted by a regulator in order to attain precise regulation of the exhaust gas quantity recirculated to the aspirated air zone. The regulator is supplied with the exhaust gas temperature (T4) measured at a given time as the load signal for the engine. The comparison value of the regulator is then either an actual value of the exhaust gas recirculation rate, ascertained by means of effective temperature measurements in the intake zone of the engine, or a set-point differential temperature which is produced by means of measuring the aspirated air quantity at a given time and the rpm.

Abstract: A control device is proposed for the burnoff procedure of a hot wire in a constant-temperature anemometer. The control device ascertains temperature increases elapsing in an uncontrolled manner at the hot wire, for instance occurring as a result of a spontaneous ignition of gasoline fumes, and terminates a burnoff procedure, once begun, upon the occurrence of these uncontrolled temperature increases. These events are ascertained via the signal behavior of the hot wire current and are related to a computer-controlled realization and to an analog circuit layout.

Abstract: A change-speed apparatus for a tractor for transmitting engine power to running travel apparatuses via a main change-speed mechanism, an auxiliary change-speed mechanism and a forward-and-rearward-travel-shifter mechanism. These mechanisms are arranged in series in fore-and-aft direction of a machine body and a shifter lever for the said forward-and-rearward-travel-shifter mechanism is disposed in juxtaposition to a main change-speed lever for the said main change-speed mechansim.

Abstract: A vehicle brake system is proposed, which has a wheel brake cylinder that can be placed under pressure either by a main cylinder or by a servopressure supply apparatus, and which is further provided with an anti-wheel lock apparatus that has a multiple-position valve for monitoring a line passage to the brake cylinder. Both before and after the multiple-position valve there is provided a pressure gauge which is selectively actuated either electrically or hydraulically, the input signals of which are compared with one another. The result is delivered as a control signal to the multiple-position valve. In this manner, it is possible to use a conventional main cylinder for a vehicle brake which has amplification and anti-wheel-lock provisions. The vehicle brake system is preferably usable in passenger vehicles or lightweight commercial vehicles.

Abstract: An apparatus for generating a fuel quantity signal in an injection pump is proposed, which is provided with a pump piston deflected by a cam disk which aspirates fuel out of a fuel inlet conduit provided with a magnetic valve and expresses it into a supply line. The metered fuel quantity is obtained on the basis of a metering onset signal and an end-of-metering signal, the first being generated by a position-sensor apparatus cooperating with the pump piston and the second being derived from the voltage applied at the magnetic valve.

Abstract: An rpm governor is proposed, in which intervention into the regulation process can be made directly via a magnet, so that the degree of proportionality, particularly with isostatic governors, can be lowered to a minimum.

Abstract: A regulating device is proposed for a fuel metering system of an internal combustion engine having .lambda. regulation. The regulating device includes a P-I regulator, and the individual control variables of the regulator are stored in memory and are capable of being recalled in accordance with operating characteristics. By means of asymmetrical P and I components that is, different values at the transition from a lean to a rich mixture or vice versa, the average value for .lambda. can be shifted in a clearly-defined manner, so that the individual exhaust gas components are substantially adapted to the desired values at all operational points. The individual P and I components or regulator control variables are stored in memory in performance graphs, which preferably permit finely-distinguished regulator control during partial-load operation.

Abstract: The device has a scanning member, adjustable in relation to the rpm, for the determination of the full load injection amount and a support attachable to a base and holding a contour disk in a predetermined position, the latter serving as a stop for the scanning member. The support can be attached with the aid of a holding element in such a way, that the first adjustment position of the support equipped with the contour disk is permanently fixed. Even after the support has been removed, its renewed fixing in the first adjustment position is assured (FIG. 3).

Abstract: A fuel injection nozzle for internal combustion engines, in particular a cold-starting valve which has a valve needle opening counter to the force of a closing spring, the valve needle being additionally urged in the closing direction by an adjusting piston. The adjusting piston rests on a yielding stop formed by the closing spring. The stop is formed by the upper valve plate, which has a passageway bore for an extension tang of the adjusting piston. The extension tang forms a pre-stroke stop for the valve needle. A restoring spring is associated with the adjusting piston and is disposed inside the spring chamber, which surrounds the extension tang of the adjusting piston. At least one of the spring support plates has an inner annular wall protruding in collar-like fashion, which surrounds the engaged tang of the adjusting piston or valve needle.