Abstract: A control valve, in particular, an electrohydraulic control valve for controlling the injection pump of a diesel engine, incorporates a slider which is guided in a housing, in a manner permitting movement in the axial direction, the housing possessing radial flow-ports and, in the region of the inner peripheral surface, at least one annular space carrying a fluid. In order to ensure that the control-valve housing can be manufactured economically, the annular space is formed by a plurality of flow-ports which intersect in the region of the inner peripheral surface of the housing and pierce the housing radially.

Abstract: An air conveying device is provided on a radiator for water cooled internal combustion engines. The device comprises a fan rotor supported on the internal combustion engine by means of a fan rotor shaft on which is located a belt pulley for a driving belt. A fan shroud surrounds the outer ends of the fan blades and is fastened to the blade tips. So that even belts with a relatively short belt length can be installed from the fan rotor direction, the fan shroud has at least one slot extending in the axial direction for inserting the belt and for slipping the length of belt which is positioned at the shaft-free end of the fan rotor over the fan shroud.

Abstract: An arrangement for diagonally cutting up the end of a rectangular tube is provided. In order to be able to utilize the shearing principle with such diagonal cuts, the clamping jaws are arranged as stationary shearing blades having shearing edges that define a cutting plane. The rectangular tube being cut to size is diagonally inserted between the clamping jaws so that a pocket which is to be cut off stands out beyond the cutting plane. A shearing knife moves along the pocket and has an arrow-like shearing edge which inserts into this pocket-shaped projecting end and cuts off the end from the inside against the stationary cutting blade. Each of the three stationary cutting edges is brushed off by the movable cutting edge by at least one movable component.

Abstract: A vibration damper for vehicles is described, the damper curve of which is required to be arbitrarily variable, to enable the damping to be adapted optimally to driving conditions. For this purpose, the invention has a vibration damper in which a regulating member actuable by an actuating device can be pressed with variable force against at least one spring washer of a valve closure element of a damping valve arranged in the damper piston. The contact pressure of the regulating member is arbitrarily variable and the regulating member can be pressed progressively against the spring washer of the valve closure element upon an increase of force in the radial direction.

Abstract: The exhaust gas flow of an internal-combustion engine is be supplied to a turbine wheel of a radial turbine through a gas duct arrangement in the turbine housing. A guiding device is controlled as a function of operational parameters of the internal combustion engine, by means of which the exhaust gas current can be rerouted into separate gas ducts of the duct arrangement. In order to achieve an improved behavior in the lower nonsteady speed range, one of the gas ducts opens at a front side of the turbine housing on the side of the turbine wheel shaft in the area of the moving blades of the turbine wheel.

Abstract: A compact device is provided for sampling particles from the exhaust gases of an internal combustion engine for an automotive vehicle. The device includes a dilution tunnel, to which is supplied all the exhaust gases of the internal combustion engine. From the dilution tunnel, by way of an exhaust gas distributor, a sample stream of exhaust gas is distributed to filter cylinders arranged in exhaust gas conduits in dependence on the operation of the internal combustion engine. Filter units, traversed by the sample stream of exhaust gas, are removably disposed in the filter cylinders which are vertically arranged and exhibit a filter mounting element accommodating the filter units. This filter mounting element is adapted to be swung out laterally from the filter cylinders after opening of a locking device.

Abstract: A valve spring retainer and locking assembly comprising a locking member which is made screen-like and engages at least one peripheral groove of a valve stem end in a manner known per se employing a bulge, and is pressed against the valve stem end via a conical outer surface in interaction with a valve spring retainer. The locking member has the conical outer surface on the outer periphery of an umbrella-like support surface and also has a cylindrical contact surface with the valve stem on the groove side facing towards the free valve stem end. The valve spring retainer is supported against the screen of the locking member, is made of fiber-reinforced plastic and in the area of the conical outer surface of the umbrella-like support surface has a conical step which leaves an impression on the run of the fibers and, in interaction with the conical outer surface of the locking member, presses the locking member against the stem.

Abstract: A process is described for producing fiber-reinforced light-metal castings in which a loose fiber tangle is placed in a casting mold and is saturated with molten light-metal under low pressure. Subsequently, the excess of molten light-metal is squeezed off while the fiber tangle is compressed. The outflow of the molten light-metal is then stopped with the molten light-metal being solidified under high pressure. The process is especially suitable for utilizing the solution-spun inorganic fiber tangles that up to now had not been especially suitable for the reinforcing of light-metals.

Abstract: An air conditioning unit comprises a cooling unit and a heating unit and is provided with dehumidifying mode for drying the through-flowing air. The operation of the dehumidifier results in activation of the cooling unit compressor, which reduces the air temperature inside the vehicle. Switching circuits are provided for compensating for this reduction in temperature. The compensation in the switching circuits is dependent on the outside temperature and is ineffective if the cooling unit is running at "full cooling" when the dehumidifier is switched on, or if the outside temperature is below 0 degrees centigrade.

Abstract: A rotor for a gas turbine exhibits three-dimensionally curved blades which are curved counter to the direction of rotation of the rotor in the radial flow region. The blades are arranged on a hub with a disc-shaped terminal region. In order to achieve a more highly aerodynamic blade shape with a simultaneous reduction of the moment of inertia of the rotor, the blades exhibit in the axial direction mean camber lines which extend centrally in the radial direction between the pressure side and the suction side of the blades, the mean camber lines being describable by a 2nd order curve equation.

Abstract: This invention relates to a locking mechanism for the locks of the rear doors of a motor vehicle with one locking device for each door lock acting against the unauthorized opening of the doors from the interior side of the doors, a so called child safety lock. Each locking device is assigned an electric-motor-driven control unit, the rotational direction of said control unit being reversible via a double pole changing switch (double throw switch) and said control unit being connected with it and being able to be remotely operated with respect to locking or unlocking of the lock by a switching element that can be operated from the front seats. The locking condition of the locking device is indicated by an optical display.To reduce manufacturing parts and expenses for the circuit controlling the optical display, this circuit is formed by parts of the circuit controlling the locking devices themselves.

Abstract: An injection nozzle has an insert with helical swirl channels functioning as a single-jet nozzle for air-compression fuel-injection internal combustion engines, with a nozzle needle opening inwards. To achieve fuel atomization constant in terms of engine speed and load in all the operating ranges of the internal combustion engine and having a relatively invariable mushroom-like atomization form on the nozzle outlet side, the nozzle needle can be moved free of stops in the opening direction over the entire operating range, counter to the force of a spring, as a function of the fuel pressure prevailing in the pressure space, in such a way that when there is an equilibrium between the spring force and the force exerted on the needle in the pressure space, an almost always equal pressure ratio independent of the engine speed and arising in the valve-seat region is established, together with a constant outflow speed free to the combustion space.

Abstract: A guide means for a support bar of a vertically slidable headrest of which the two guide elements, made of resilient material and inserted mutually superposed at an interval in a guide rail, are in mutual communication by a web in a manner favorable for production and assembly and wherein a median section of the web serves as a further bracing point for the support bar in addition to the two guide elements.

Abstract: A weld-on nut is welded to a metal component to form a portion of a battery grounding terminal. The weld-on nut is tinned or galvanized with an anti-corrosion metal coating. The weld-on nut is welded to the associated sheet metal component by means of an electric resistance welding operation. In order to protect the contact surface from fusion of the tinning by welding spatters, an electrode contact surface on the nut is arranged axially offset relative to an electrode abutment surface or transversely to the latter. This weld-on nut can be of extremely light and small construction. The nut also requires provision of only a relatively small centering hole in the sheet metal in the region of the welding position, whereby the sheet metal component is only very slightly weakened.

Abstract: An automobile steering wheel that is disposed below a plane of a steering wheel rim. As a protection against impact, there is a plastically deformable cup-like deformation member within the steering wheel that absorbs energy due to an impact of a driver of the motor vehicle on the steering wheel. Spokes are constructed in such a manner that the contribute to the energy absorption by a performance of deformation work. The deformation member has a height which is less than a distance between the hub and the plane of the steering wheel rim. The deformation member is fixedly connected in its upper region with the respective spokes.

Abstract: Lamp unit for vehicles which is retained slidably under the effect of force in the longitudinal direction of the vehicle in order to reduce the danger of injury to pedestrians et cetera, and also the danger of damage to the lamps in the case of minor accidents.

Abstract: A fuel injection nozzle for internal combustion engines comprises a nozzle needle being supported in a casing and adapted for obturating the orifices of the nozzle under spring pressure and for opening them under fuel pressure. An abutment which is adjustable in that it reduces the length of the opening stroke of the injection needle when the internal combustion engine operates in a speed range from idling speed to at most a medium speed and under a small load, can be actuated by means of a spring-biased piston urged upon by a pressure medium. In order to guarantee a continuous adjustability of the abutment, the pressure medium acting upon the piston is fed via a pressure-regulating valve, and a control unit, influenced at least by the engine speed and load prevailing at any given time, is provided for controlling this pressure-regulating valve. The piston is arranged in a cylinder having an axis which intersects the axis of the nozzle needle at a first angle slightly deviating from 90.degree..

Abstract: An air guide casing includes an air filter, an air throttle valve, an exhaust gas recycling pipe, a mixing chamber in fluid communication with the recycling pipe, and a distributor chamber in fluid communication with the mixing chamber and at least one cylinder of an internal combustion engine. The air guide casing is provided with means for collecting a mixture of recycled exhaust gas and filtered intake air and means for distributing that mixture to the cylinders. Thus, the air guide casing provides a separate mixing section in the air guide casing to achieve good mixing of the air for combustion with the incoming exhaust gas prior to introduction of the exhaust gas and clean air into the distributor chamber.

Abstract: A device is provided for the indirect contactless electrical measuring of short distances, particularly for measuring the stroke and/or the position of nozzle needles for injection nozzles of internal combustion engines. A coil having a solid core of a soft-magnetic alloy is used as magnetic field sensor and a low-mass permanent magnet. The permanent magnet is rigidly connected to a moving control element. The nozzle needle is fixed to the control element. Movement of the permanent magnet in relation to the coil causes a change in the magnetic flux density in the core of the coil and, via the nonlinear function B=f(H) of the mangetization curve, effects a change in the dynamic permeability and consequently in the inductance of the coil. The change in inductance of the coil is converted by a suitable electronic evaluating circuit into a path-analogue signal to determine the distance between the fixed coil and the movable permanent magnet.

Abstract: A self-propelling commercial vehicle, especially a tractor-like agricultural vehicle, with two units each having an unsprung axle, of which the first unit, as drive unit, includes a drive aggregate and a driver place located within the area of its end coordinated to the second unit, and of which the second unit is guided by way of a cantilever which is connected with the first unit to be pivotal in the vertical direction and is elastically supported with respect thereto; the cantilever is additionally pivotal in the vertical direction with respect to the axle of the second unit while a guide support is provided for the rectilinear guidance of this axle which is offset in the vertical direction to the centilever and is detachable and pivotal with respect to the axle and the drive unit of the first.