Abstract: A pedestrian protection device for a motor vehicle includes a crossbar and a deformation device which is arranged in front of the crossbar. The deformation device has bending limbs with ends which contact a surface or come into contact with the surface in the event of a collision of the motor vehicle and which are designed to be movable along the surface as a result of the collision, and a latching device is formed on the surface, said latching device being latchable with the ends of the bending limbs as a result of the collision. The deformation device has a plurality of such bending limbs, wherein a first bending limb and a second bending limb are arranged adjacently to each other, and the first bending limb and the second bending limb are offset relative to each other in the movement direction of the bending limbs and/or the end of the first bending limb and the end of the second bending limb are designed to be movable in opposite directions.

Abstract: A cross-member arrangement for a bumper assembly on a motor vehicle includes a first deformation element mounting and a second deformation element mounting, a forward cross-member profile, which is connected to each of the two deformation element mountings, a rear cross-member profile, which is connected to each of the two deformation element mountings. A bumper assembly for a battery-powered motor vehicle includes one deformation element for bracing the bumper assembly against a front end of the motor vehicle arranged on each side of a central longitudinal axis of the motor vehicle.

Abstract: A double-wall pipe for a transportation means which includes an outer pipe and an inner pipe extending therein. The outer pipe has two pipe segments which are formed like half-shells and are joined together to form the outer pipe along the longitudinal edges thereof. In this way, it is possible to make both the outer pipe and the inner pipe of metal, such that the wall thickness of the inner pipe can be relatively small.

Abstract: A method for determining if an injector (10) is in a blocked state, the injector including a coil of resistance R and of inductance L, passed through by a power supply current of maximum intensity (Imax), and powered by a voltage E, the method includes: controlling the opening of the injector, measuring the intensity I passing through a measurement resistance r as a function of time t, determining a necessary duration ? to reach a predetermined intensity value (Ipred), lower than the maximum intensity (Imax), computing the inductance L as a function of the necessary duration, if L?Lth, then the injector is blocked in the closed position, otherwise if L<Lth, the injector is blocked in the open position, with Lth being a threshold value of the inductance.

Abstract: A process and a system for creating internal stress in a metallic workpiece by laser shock peening is provided. In the process, a first laser pulse is applied to a treatment site of the workpiece covered by a surface layer. A second laser pulse follows the first laser pulse in time, and is applied to the treatment site of the workpiece. A covering layer, such as flowing water, is provided over the treatment site during the application of the laser pulses.

Abstract: A method for determining if an injector (10) is in a blocked state, the injector including a coil of resistance R and of inductance L, passed through by a power supply current of maximum intensity (Imax), and powered by a voltage E, the method includes: controlling the opening of the injector, measuring the intensity I passing through a measurement resistance r as a function of time t, determining a necessary duration ? to reach a predetermined intensity value (Ipred), lower than the maximum intensity (Imax), computing the inductance L as a function of the necessary duration, if L?Lth, then the injector is blocked in the closed position, otherwise if L<Lth, the injector is blocked in the open position, with Lth being a threshold value of the inductance.

Abstract: A double-wall pipe for a transportation means which includes an outer pipe and an inner pipe extending therein. The outer pipe has two pipe segments which are formed like half-shells and are joined together to form the outer pipe along the longitudinal edges thereof. In this way, it is possible to make both the outer pipe and the inner pipe of metal, such that the wall thickness of the inner pipe can be relatively small.

Abstract: A method for controlling an internal combustion engine with at least two cylinders in the case of irregular running caused by combustion problems has the following steps: measurement of a segment time of a first cylinder during a first time interval T1 in the sequence of operations of the internal combustion engine, with a corresponding first signal being transmitted as a first actual value to a control, sensing of pressure fluctuations in the second cylinder during a second time interval T2 in the sequence of operations of the internal combustion engine, with a corresponding second signal being transmitted as a second actual value to a control and changing of operating parameters of the at least one cylinder by means of the control on the basis of the first and second signal, when the first and the second actual value each deviate from setpoint values stored in the control.

Abstract: This invention relates to the field of metallurgy, in particular to high strength weldable alloys with low density, of aluminium-copper-lithium system. These alloys can be used in air- and spacecraft engineering. The alloy comprises copper, lithium, zirconium, scandium, silicon, iron, beryllium, and at least one element from the group including magnesium, zinc, manganese, germanium, cerium, yttrium, titanium. A method for fabricating semiproducts is also provided.

Abstract: A process and a system for creating internal stress in a metallic workpiece by laser shock peening is provided. In the process, a first laser pulse is applied to a treatment site of the workpiece covered by a surface layer. A second laser pulse follows the first laser pulse in time, and is applied to the treatment site of the workpiece. A covering layer, such as flowing water, is provided over the treatment site during the application of the laser pulses.

Abstract: A method for controlling an internal combustion engine with at least two cylinders in the case of irregular running caused by combustion problems has the following steps: measurement of a segment time of a first cylinder during a first time interval T1 in the sequence of operations of the internal combustion engine, with a corresponding first signal being transmitted as a first actual value to a control, sensing of pressure fluctuations in the second cylinder during a second time interval T2 in the sequence of operations of the internal combustion engine, with a corresponding second signal being transmitted as a second actual value to a control and changing of operating parameters of the at least one cylinder by means of the control on the basis of the first and second signal, when the first and the second actual value each deviate from setpoint values stored in the control.

Abstract: This invention relates to the field of metallurgy, in particular to high strength weldable alloys with low density, of aluminium-copper-lithium system. These alloys can be used in air- and spacecraft engineering. The alloy comprises copper, lithium, zirconium, scandium, silicon, iron, beryllium, and at least one element from the group including magnesium, zinc, manganese, germanium, cerium, yttrium, titanium. A method for fabricating semiproducts is also provided.

Abstract: Sensor structure of a flow body protruding into a current for carrying out measurements of flow states, containing a structural part (1) with at least two measuring orifices (5), to which transfer lines (7) are coupled, which guide the flow medium from the measuring orifices (5) to a pressure converter system (13) for the purpose of determining the flow states. The outer shell (3) of the structural part (1) contains two areas (21, 22), which are arranged behind each other viewed in the direction of flow, wherein the first area (21) has greater thermal conductivity than the second area (22). Within the first area (21) heating elements (31) are arranged on the structural part (1), and are connected with a temperature control circuit with the temperature on the surface of the first area (21) as a control variable.

Abstract: In a method for welding joint partners, a shaped piece that is extruded out of a welding filler material is arranged between joint partners, which are to be connected, in such a way that it is in contact with both joint partners. The section of the shaped piece is matched to the geometry of at least one of the joint partners, so that before welding, the shaped piece is connected to the at least one joint partner in a form-locking manner. Subsequently, the joint partners are welded together along the shaped piece.

Abstract: This invention relates to the field of metallurgy, in particular to high strength weldable alloy with low density, of aluminium-copper-lithium system. Said invention can be used in air- and spacecraft engineering. The suggested alloy comprises copper, lithium, zirconium, scandium, silicon, iron, beryllium, and at least one element from the group including magnesium, zinc, manganese, germanium, cerium, yttrium, titanium. Also there is suggested the method for fabrication of semiproducts' which method comprising heating the as-cast billet prior to rolling, hot rolling, solid solution treatment and water quenching, stretching and three-stage artificial ageing.

Abstract: Sensor structure of a flow body protruding into a current for carrying out measurements of flow states, containing a structural part (1) with at least two measuring orifices (5), to which transfer lines (7) are coupled, which guide the flow medium from the measuring orifices (5) to a pressure converter system (13) for the purpose of determining the flow states. The outer shell (3) of the structural part (1) contains two areas (21, 22), which are arranged behind each other viewed in the direction of flow, wherein the first area (21) has greater thermal conductivity than the second area (22). Within the first area (21) heating elements (31) are arranged on the structural part (1), and are connected with a temperature control circuit with the temperature on the surface of the first area (21) as a control variable.

Abstract: The NH.sub.3 content is regulated in methanol used in a process for scrubbing out sour gases from gaseous mixtures and/or for preventing ice formation prior to the scrubbing step. The methanol is freed, after the scrubbing step, respectively of absorbed gaseous components and/or water, and reused in the cycle as scrubbing liquid and/or for preventing ice formation. A strong acid is added to the methanol from water-soluble ammonium salts. Thereby, dissolved salts are formed which are removed together with water. Deleterious trace acids are also removed by an analogous treatment with a basic compound. The acid/base treatments are conducted in succession.

Abstract: Process for the treatment of gaseous mixtures, which contain sour gases, with organic solvents, characterized in that the treatment is conducted in the presence of alkaline-reacting compounds in order to prevent corrosion of apparatus parts made of iron or steel.