Abstract: An injection internal combustion engine with supercharging by an exhaust gas turbocharger, in which a by-pass control limits the maximum supercharging pressure and in which upon exceeding a predetermined critical maximum pressure a clearly noticeable indication thereof is given to the driver.

Abstract: A steering system is provided for motor vehicles with a multiple-part steering column, in which a rigid steering column part in the vicinity of the steering wheel is guided in an outer tube and in which a plastically deformable second steering column part, for example in the form of a corrugated tube, is located between this first steering column part and the steering gear, and in which the outer tube is fastened to a cross support passing between the windshield pillars of the vehicle. In order to obtain a flatter attitude of the outer tube and thereby a lowering of the steering wheel in the case of a frontal collision, provision is made according to the invention for the outer tube to be additionally supported by means of at least one strut, or similar device, passing in the interior of the vehicle in front of the front bulkhead, on a cross support passing below the windshield.

Abstract: The invention relates to a tensioning arrangement with a damping device for a belt drive. The tensioning arrangement includes a combination of a pivotal roller lever which supports a tensioning roller, a tension spring engagable with the roller lever and a damping device attached to the roller lever.In order to facilitate a rapid installation and tensioning of the belt on the belt drive, the end of the tension spring opposite the roller lever is connected with a pivotable spring tensioning lever, which spring tensioning lever is selectively movable from a position where the belt is provided with no pretensioning to a pretensioning position where the spring exhibits a predetermined pretensioning force at the belt tensioning roller.

Abstract: A desired position is indicated by a pair of electrically conductive stationary regions spaced and electrically insulated from each other along the path of a pair of electrically conductive moving contact regions being in contact with the moving contact regions. The moving contacts are opposing surfaces in a recess or on a protuberance. A pair of indicators electrically connected one to each of the stationary contacts are both activated only when both pairs of contacts are touching each other.

Abstract: A cylinder casing for use in internal combustion engines having a reciprocating piston is provided having strip-shaped hardened zones along the inner wall of the cylinder which are disposed in such a manner as to impart rotational movement to piston rings relative to the piston sliding within that cylinder.

Abstract: A wheel cover, especially for passenger motor vehicles, which includes a wire ring serving as a mounting element. The wire ring is provided with outwardly projecting lug-shaped members which are adapted to engage into a recess of a rim of the wheel and held in an axial and peripheral direction at the wheel cover within guides. The guides are constructed as tongue-like covers extending from the outside over the lug-shaped members and are resilient in the radial direction.

Abstract: The two-wheeled vehicle comprises a frame having a steering head, a first frame member connected to and downwardly inclined from the steering head, and a second frame member which forms a junction with the lower end of the first frame member and extends upwardly from the junction. The frame has a downwardly facing seating surface at the junction. A structural unit is connected to the frame at the seating surface and comprises a rear fork. The seating surface extends only across the width of the frame at said junction. The frame is formed with blind bores in the seating surface. The structural unit is connected to the frame by screws and locating pins extending from below into the blind bores.

Abstract: A control method and apparatus for combating knocking in internal combustion engines which automatically adapts itself to the internal combustion engine to be controlled and, as a result of the automatic adaptation, is capable of employment, without adjustments, on different model-lines and on the individual examples of the internal combustion engines, within these lines and falling within the permissible scatter-range.

Abstract: A process and apparatus for determining maintenance and servicing intervals on motor vehicles which makes it possible to carry out maintenance or servicing work as a function of the states of wear of the operating parameters to be maintained, wherein values corresponding to the particular states of wear of the operating parameters are fed to a computing unit, and by comparison with values filed in its store the computing unit displays a recommendation to carry out the maintenance work when an operating parameter has approached or reached the wear limit. The motor vehicle driver can thus see which driving behavior to adopt in order to achieve as long a maintenance interval as possible, so that he has an incentive to drive economically. Practice of the invention assures that parts are exchanged or renewed only when this is actually necessary.

Abstract: In a method and apparatus for controlling the fuel metering for an internal combustion engine, an electrical displacement sensor is used for fuel injection pumps with an injection quantity control element, which is adjusted, via a control lever, proportionally to the electrical displacement sensor, whose displacement change causes an electrical signal proportional to this displacement change, this electrical signal being fed into an electronic control unit for readjusting the injection quantity control element.In order to avoid supply quantity scatter, control can be directed towards a calibration point situated on a supply quantity characteristic of the fuel injection pump, this calibration point preferably being located in the region of the maximum fuel supply quantity, and the output voltage of the electrical displacement sensor can be compared with a specified required value.

Abstract: An axially flexible drive disc of sheet-metal for vehicle propulsion includes a centrally disposed flange for attachment to the end of the drive shaft of the vehicle propulsion engine and is connected at its external circumference at a few, preferably three, fastening points, located evenly distributed around the periphery, to the input element of the adjacent gearbox. The gear box includes a hydrodynamic torque converter as the input element with the converter housing simultaneously assuming the flywheel function for the vehicle propulsion engine.

Abstract: An installation for the indication of the fuel consumption, especially of heavy truck engines, with a sensor for the position of the drive pedal and with a set of fuel consumption-engine rotational speed-characteristic curves stored in a storage device and dependent on the drive pedal position; a predetermined number of at least single-color light diodes, of which each is coordinated to a predetermined partial range of engine rotational speed and indicates an information about the specific fuel consumption as a function of the instantaneous control rack, respectively, throttle valve position coordinated to the drive pedal position within the engine rotational speed partial range corresponding to the stored set of fuel consumption-engine rotational speed curves, are integrated into the dial of a tachometer corresponding to their coordination to the predetermined engine rotational speed partial ranges.

Abstract: A safety arrangement for an adjusting installation of a seat adapted to be actuated manually or programmed, especially of a vehicle seat, with adjusting motors and with an electronic circuit which gives priority to the manual seat adjustment over a programmed seat adjustment, which, in case of a relay or adjusting motor defect, opens up the corresponding circuit, which in case of a simultaneous actuation of several position buttons, interrupts a programmed seat adjustment and which after interruption of the energy supply permits a programmed seat adjustment only after renewed storage of a seat position.

Abstract: In motor vehicles, in particular passenger cars possessing an axle or axles with steerable wheels, the steering-gear box is conventionally located asymmetrically with respect to the center-line. The result of this on the steering linkage is that the linkage part-sections between the steering-gear box and each of the wheels are of different design. This asymmetry can give rise to differences in the wear of the tires on these wheels, and is advantageously avoided according to this invention by making the overall stiffness values of the two part-sections identical, irrespective of the design-differences.

Abstract: The invention relates to a cold-start assisting device for motor vehicles with which under extreme cold conditions, in addition to the normal fuel, auxiliary fluid is also injected into the intake of the vehicle combustion engine by means of a control switch. With this operating or control switch it is also possible after a successful start to support the running of the combustion engine with auxiliary injection. In order to prevent intentional or inadvertent operation of the auxiliary injection with a stalled engine, the control switch exhibits an auxiliary working contact which is connected with a terminal of a motor driven generator.

Abstract: The invention provides an improvement in an assembly comprising a frame for a motor vehicle, a pair of unsteered wheels disposed on opposite sides of the frame, and a spring suspension comprising a respective longitudinal control arm connected to each one of the wheels for constraining the wheel, each control arm having a hub, a respective bearing sleeve having one end secured to the frame and associated with a respective one of the control arms, the control arm hub being rotatably mounted in the associated bearing sleeve, the bearing sleeves having inner ends facing each other, a respective torsion bar associated with each wheel control arm for urging the control arm to a predetermined angular position about the axis of the associated bearing sleeve, the torsion bars having axes extending parallel to each other transversely to the direction of travel and the torsion bars being arranged one behind the other in this direction, and a respective anchor secured to the frame against rotation about the axis of an a

Abstract: A heat-exchanger with a bundle of parallelly extending pipes adapted to be acted upon by air which are hermetically closed and constructed in the manner of heat-pipes. A heat-exchanger head which is adapted to be traversed by a heat carrier medium extends transversely to the pipe bundle. The heat carrier channels formed therein are sealed off from a flow point of view against the heat-pipe hollow spaces but are in good heat-transferring connection therewith. The heat-exchanger is formed by two types of heat-exchanger plates of which the first type extends over the air stream and the heat-exchanger head and of which the second type of heat-exchanger plates is limited to the heat-exchanger head and extends transversely to the first type of heat-exchanger plates and is brazed thereto over a large surface.

Abstract: A device for detecting the failure of a sensor which is installed on machine elements which are fitted with rotating parts, a reference signal being obtained from the output signal of the sensor, the reference signal being compared, in a comparator, with the output signal of the sensor, the output pulses from the comparator being employed to trigger a retriggerable one-shot multivibrator circuit. The absence of the output signal initiates an alarm and/or an adjustment of certain machine sub-systems. The arrangement can be employed for monitoring the most diverse types of sensor, for example for monitoring knock sensors in internal combustion engines.

Abstract: The invention relates to a process for the hydrogen-impermeable brazing of austenitic structural steel parts. These are initially loosely joined at soldering points with the addition of definite amounts of solder and soldering agent and subsequently brought to soldering temperature in a furnace under a high vacuum. In order to obtain a satisfactory wetting characteristic, on the one hand, and a good hydrogen resistance, on the other hand, a bicomponent soldering process is provided, with about 1 part by weight of nickel-base solder and about 3 parts by weight of bronze-base solder. The nickel-base solder contains about 1-3% by weight of boron and 2-5% by weight of silicon. The nickel-base solder may amount to at most about 30% by weight of solder. Such soldered joints are used for storage pipes at metal hydride reservoirs.