Abstract: A LIDAR measuring device and a method for determining the speed of particles in a measuring volume includes a narrowband continuous wave laser light source (1), which emits light which is coupled into a measuring branch (3) and a reference branch (4). The light coupled into the measuring branch (3) is at least partially emitted by a transmitting device in the direction of the measuring volume such that the emitted light is at least partially scattered and/or reflected by the particles in the measuring volume. A part of the scattered and/or reflected light is then received by a receiver device and is coherently superimposed with the light leaving the reference branch (4), and the resulting light beam is directed onto a detector (6) to generate a detector signal characteristic for the resulting light beam. Finally, the speed of the particles in the measuring volume is determined in an evaluation unit (11) by taking into account the detector signal.

Abstract: A LIDAR measuring device and a method for determining the speed of particles in a measuring volume includes a narrowband continuous wave laser light source (1), which emits light which is coupled into a measuring branch (3) and a reference branch (4). The light coupled into the measuring branch (3) is at least partially emitted by a transmitting device in the direction of the measuring volume such that the emitted light is at least partially scattered and/or reflected by the particles in the measuring volume. A part of the scattered and/or reflected light is then received by a receiver device and is coherently superimposed with the light leaving the reference branch (4), and the resulting light beam is directed onto a detector (6) to generate a detector signal characteristic for the resulting light beam. Finally, the speed of the particles in the measuring volume is determined in an evaluation unit (11) by taking into account the detector signal.

Abstract: A flange for a corrosion resistant and nevertheless low cost flange for pressure measurement cells, or pressure transfer means, is composed essentially of a metal foundation of a standard material and is protected on the side facing a process medium by a there applied layer of a highly alloyed, special material.

Abstract: A method for achieving a higher stress corrosion cracking resistance for steel components of corrosion resistant, austenitic steel having an outer oxide layer, especially a chromium oxide layer, especially steel components in the form of steel sheets, steel pipes or steel rods, as well as for weld seams connecting austenitic steel components, wherein the increased stress corrosion cracking resistance is achieved by introducing compressive stresses into an outer layer of the steel component covered outwardly by the oxide layer, respectively into an outer layer of the weld seam, wherein the compressive stresses are introduced by areal pressure exertion on the respective outer layer.

Abstract: A flange for a corrosion resistant and nevertheless low cost flange for pressure measurement cells, or pressure transfer means, is composed essentially of a metal foundation of a standard material and is protected on the side facing a process medium by a there applied layer of a highly alloyed, special material.

Abstract: The present invention relates to a drive mechanism of an electric vehicle that is realized only by means of one or more electric motors that are connected to at least one storage battery, wherein a generator is provided that can be connected for supplying energy to the drive mechanism, wherein the generator is coupled to a Wankel engine that drives only the generator when needed, but delivers no driving power as torque to the drive train of the electric motor or motors of the drive mechanism. A method for operating an electric vehicle is also presented.

Abstract: An internal combustion engine includes a plurality of cylinders defining combustion chambers each having a roof provided in the cylinder head. Each roof is composed of first and second inclined roof surfaces meeting in a ridge line. Two gas intake openings terminate in respective free edges on the first roof surface and at least one gas exhaust opening terminates in a free edge on the second roof surface. Respective gas exchange valves are seatable in the gas intake and gas exhaust openings. A fuel injection nozzle and a spark plug are supported in the cylinder head in a region of the roof. The first roof surface has, adjacent the fuel injection nozzle, a shoulder covering a terminal edge of the cylinders and extending into each combustion chamber. The shoulder has a front face transverse to the nozzle axis. The free edge of the gas intake openings intersects the ridge line.

Abstract: A four-cylinder, reciprocating piston-machine includes a crankshaft having a rotary axis; a center bearing supporting the crankshaft; two outer bearings flanking the center bearing and supporting the crankshaft; and first, second, third and fourth torsion springs extending parallel to the crankshaft axis. The first and second torsion springs are parallel to and facing a first side of a reference plane containing the crankshaft axis, while the third and fourth torsion springs are parallel to and facing a second side of the reference plane. First, second, third and fourth elongated balancing masses are secured to and extending unidirectionally from respective first, second, third and fourth torsion springs toward the crankshaft in a perpendicular orientation to the crankshaft axis. The first and second balancing masses are situated at the outer bearings, while the third and fourth balancing masses are situated at the center bearing.

Abstract: A reciprocating piston engine includes a housing; a cylinder disposed in the housing; a piston guided for reciprocation within the cylinder; a crankshaft connected to the piston for effecting a guided reciprocation thereof within the cylinder; at least two camplates connected to the crankshaft such that they rotate together with the crankshaft, each camplate defining a control contour thereon; two balancing masses operatively coupled to the camplates such that the camplates are effective for actuating respective ones of the balancing masses, each balancing mass comprising a pivoting arm; and coupling means connecting the balancing masses to one another thereby effecting a forced reciprocation thereof as a function of a rotation of the crankshaft.

Abstract: A combustion engine. The engine includes an engine housing; at least one cylinder disposed in the engine housing; and a crank drive including: a crankshaft having a crank; and a piston being axially displaceable within the cylinder. The crank drive further includes a connecting rod which has an upper connecting rod part hinged to the piston; and a lower connecting rod part hinged to the crank. The lower connecting rod part is hinged to the upper connecting rod part. A central joint hinges the upper connecting rod part and the lower connecting rod part to one another, a longitudinal axis of the upper connecting rod part further being defined by a line connecting the central joint with a hinge joint of the upper connecting rod part to the piston.

Abstract: A reciprocating piston engine, in particular an internal combustion engine with at least one cylinder in which a piston connected with a crankshaft is driven so it can move back and forth. The crankshaft (1) is connected with at least one cam disk turning with it. The cam disc has a control profile which acts as an actuator on at least one additional unit, in particular a compensating weight.