Abstract: An evaporator (1), for evaporating a liquid (4), particularly for a waste heat utilization device of an internal combustion engine, includes a plurality of channel plate arrangements (2) that are stacked in a stacking direction (3). A gas path (6) is formed between each pair of adjacent channel plate arrangements (2), through which a gas (7) can be conducted. The gas is used to supply the heat that is required to evaporate the liquid (4). Each channel plate arrangement (2) contains a liquid inlet (8), a steam outlet (9), and a channel (11) which connects the liquid inlet (8) and steam outlet (9) together and which forms a repeatedly-deflecting evaporation path (12) for the liquid (4) to be evaporated. Increased efficiency can be achieved if the channel (11) has, in an evaporation path (12) evaporation zone (14), a flowable cross-section (18) which increases in a direction of liquid (4) flow.

Abstract: A mixer/evaporator or an exhaust system (5) of an internal combustion engine (1), includes a carrier (20) surrounding, in a circumferential direction, a flat cross section of a mixing/evaporating device (12), through which exhaust gases flow and which extends at a right angle to the axial direction (17). The carrier has opposite side walls, wherein short side walls (23, 24) connect each long side walls (21, 22) to one another. Guide blades (25) project in a direction of the respective opposite long side wall, are set at an angle in relation to the axial direction and are arranged at one of the long side walls at least one axial end (26, 27). An axial end of the first long side walls is offset in the axial direction in relation to the axial end of the second long side wall on the same side of the mixing/evaporating device.

Abstract: A heat exchanger (9), of e.g. an exhaust gas system (5) for an internal combustion engine (1), includes a thermoelectric generator (12) having a hot side (13) and a cold side (14) and including a heating tube (15) on a hot side of a heating device (10), and a cooling tube (16) on a cold side of a cooling device (11). The heating tube and the cooling tube are stacked on one another and form a tube stack (18), with the heating tube and the cooling tube extending parallel to one another in a longitudinal direction (19) of the tube stack. For energy efficiency, a housing (21) of the heat exchanger has a jacket (23) with an integral re-tensioning section (25) that is resiliently adjustable between a relaxed state and a tensioned state. The pre-tensioning section generates a pre-tensioning force (26) pressing the tube stack in a stacking direction (17).

Abstract: A silencer (1; 1?) for an exhaust system of an internal combustion engine, in particular of a motor vehicle, includes a housing (2; 2?), which includes a housing shell (3; 3?) extending in a circumferential direction (U) of the housing (2; 2?). At least one sandwich plate (6; 6?) forms a part of the housing shell (3; 3?). A housing interior space (4) including at least one chamber (8), is enclosed by the housing (2). A self-supporting support structure (5) is provided, which includes a pipe arrangement (7) that is at least partially arranged in the housing interior space (4).

Abstract: An exhaust system component (5) is provided for an exhaust system (1) of an internal combustion engine, especially of a motor vehicle, with an inner shell (6), which defines an exhaust-gas-guiding inner area (7), with an outer shell (8), which is arranged on an outer side of the inner shell (6) turned away from the inner area (7), with a cavity formed between inner shell (6) and outer shell (8), and with heat insulation (10) arranged in the cavity (9). The heat insulation of the component (5) includes insulation (10) having at least one microporous molding (molded body) (11).

Abstract: A heat exchanger (7) for an exhaust system (5) of an internal combustion engine (1), includes a heating tube (16) for carrying hot exhaust gas and a cooling tube (17) for carrying a liquid cooling agent. A thermoelectric generator (13) generates an electric voltage from a temperature difference and is arranged with the adjacent tubes in a stacking direction (18) to form a stack (21). A support tube (28) is supported in the stacking direction on wall sections (29) of the respective tube (16, 17), which wall sections mutually face each other, and is arranged in the respective heating tube (16) and/or cooling tube (17). Increased energy efficiency is achieved if at least two support tubes (28), which differ from one another by tube length and/or tube end (30) and/or by tube cross sections, are arranged in the respective tube (16, 17) at right angles to a longitudinal direction (31).

Abstract: A flange component part (1) for a component of an exhaust gas system for an internal combustion engine, in particular of a vehicle, has a flange (2), which extends in a flange plane (4) and has a pipe section (3), which projects away from the flange (2) at a longitudinal center axis (5), which is perpendicular to the flange plane (4). A cost-efficient producibility results when the flange component (1) is a sheet metal mold, which is produced from a single metal sheet (6) by means of metal forming.

Abstract: A steam generator (1) is provided for a Rankine cycle, especially for a waste heat recovery device (37) of an internal combustion engine (36), and preferably in a motor vehicle. The steam generator includes: a heat exchanger channel (2), in which a heat exchanger (3) is arranged, and a bypass channel (4) for bypassing the heat exchanger channel (2). A heating fluid can flow through the heat exchanger channel (2) and bypass channel (4) during the operation of the steam generator (1). A medium to be evaporated can flow through the heat exchanger (3) during operation of the steam generator (1). A compact structural shape with high energy efficiency is achieved with the heat exchanger channel (2) enveloping the bypass channel (4).

Abstract: The present invention relates to a cast steel alloy for producing cast parts with ferritic structure, wherein the alloy contains iron (Fe), carbon (C), chromium (Cr) and molybdenum (Mo). An increased resistance to intercrystalline corrosion is obtained when the alloy additionally contains titanium (Ti) and niobium (Nb).

Abstract: A four-way exhaust gas valve has a permanent inlet, a permanent outlet, a selectable inlet, a selectable outlet and a pivotable valve flap. The pivotable valve flap is arranged for switching between a first mode of operation, in which exhaust gas entering through the permanent inlet is guided directly to the permanent outlet, and a second mode of operation, in which exhaust gas entering through the permanent inlet is discharged through the selectable outlet and exhaust gas re-entering through the selectable inlet is discharged through the permanent outlet.

Abstract: A sound generator 103 for an anti-noise system for influencing sound waves propagating in exhaust systems or intake systems of vehicles driven by an internal combustion engine includes a loudspeaker basket 123, a membrane 122 supported by the loudspeaker basket 123, a permanent magnet 121 supported by the loudspeaker basket 123, a voice coil 126 supported by a voice coil carrier 125 and a membrane stop 150. The voice coil 126 is located within a constant magnetic field generated by the permanent magnet 121. The voice coil carrier 125 is supported by the membrane 122. The membrane stop 150 is located on the loudspeaker basket 123 adjacent to the membrane 122. The membrane stop 150 includes a projection 151 extending towards the membrane 122. An anti-noise system using the sound generator and a vehicle using the anti-noise system are also provided.

Abstract: A latent heat storage device with at least one hollow space having a constant storage volume which contains a phase-changing material. The material loading of the latent heat storage device can be reduced if the storage volume is so dimensioned that it consists of a basic volume which the phase-changing material assumes in the solidified state and an expansion volume which the phase-changing material additionally assumes in the molten state.

Abstract: A heat exchanger (7) for an exhaust gas system (5) of an internal combustion engine (1) includes a thermoelectric generator (13) with plural thermoelectric elements (15) that each have a hot side (16) and a cold side (17). A heating channel (18) conducts a heating medium on the hot sides and a cooling channel (19) conducts cooling medium on the cold sides (17). The thermoelectric generator (13), the heating channel (18), and the cooling channel (19) are arranged adjacent in a stacking direction (20) and form a channel stack (21). A housing (8) that encloses an interior (22) accommodates the channel stack (21) and has medium inlets (9, 11), outlets (10, 12) and electrical connections (14). The thermoelectric elements are arranged in a double-walled intermediate bottom (15) that separates the cooling channel (19) from the heating channel (18), adjacent to said cooling channel, in regard to fluid flow.

Abstract: An active noise control system for exhaust systems of a combustion engine operated vehicle comprises an anti-sound control connectable to an engine control of the vehicle and a loudspeaker connected to the control for receiving control signals and designed for generating an anti-sound in a sound generator, fluidically connectable to the exhaust system. In the control, at least two curves are stored in order to cancel airborne sound conducted in the exhaust system through outputting the signal to the loudspeaker. The curves cover different temperature ranges of the exhaust gas, which temperature ranges overlap one another by pairs or directly adjoin one another. The control is furthermore designed to select a curve suitable for a respective temperature of the exhaust gas conducted in the exhaust system from the available curves by means of signals output by the engine control and output signals to the loudspeaker making use of this curve.

Abstract: The present invention relates to a heat transfer device, more preferably for an exhaust system of a combustion engine, preferentially of a motor vehicle, with at least one warm tube for conducting a fluid emitting heat, with at least one cold tube for conducting a fluid absorbing heat and with at least one thermoelectric generator for generating electric energy from a temperature difference, wherein a thermoelectric generator each is arranged between a warm tube and a cold tube. The efficiency of the heat transfer device is improved if the respective thermoelectric generator is in contact with the respective tube via a heat conducting material and if the respective heat conducting material is configured as shaped body.

Abstract: A silencer (1) for an exhaust gas installation of an internal combustion engine, particularly of a motor vehicle includes a housing (2), with a circumferential shell (3) closed in the peripheral direction (5) and an end base (6) at each of two longitudinal ends, spaced apart in an axial direction (4). A silencer insert (15) is arranged in the housing (2) and has an inlet pipe (8) for exhaust gas and an outlet pipe (10) for exhaust gas. The shell (3) has, in the peripheral direction (5) has at least one inlet shell-segment (11) and one outlet shell-segment (12). The inlet shell-segment has at least one inlet opening (7), into which such an inlet pipe (8) is inserted from the inside. The outlet shell-segment (12) has at least one outlet opening (9) into which such an outlet pipe (10) is inserted from the inside.

Abstract: A PCM device (1) is provided for an exhaust system of an internal combustion engine, especially of a motor vehicle. A simplified installation of the PCM device (1), with reduced heat stresses, is achieved through the provision of at least one storage plate (2), which has two plate bodies (3, 4), which follow each other, enclose a storage space (7) filled with heat storage material (18) and have a wave structure (5, 6) each. The wave structure (5) of one plate body (3) extends sloped in relation to the wave structure (6) of the other plate body (4).

Abstract: An exhaust gas-treating device (1) for an exhaust system of an internal combustion engine, especially of a motor vehicle, has a housing (2), which has a jacket (3) extending circumferentially on the side and two end-side end bottoms (4, 5). Maintenance is simplified with at least one mounting tube (6), which passes through one or the first end bottom (4) and into the outlet end (8) of which a particle filter (7) is plugged axially from the outside, with a deflecting housing (9). The deflecting housing (9) contains a deflecting chamber (10), and has at least one inlet (11) communicating with the deflecting chamber (10) and at least one outlet (12) communicating with the deflecting chamber (10). A fastening device (13) is provided for detachably fastening the respective inlet (11) at the respective outlet end (8) of the mounting tube (6).

Abstract: A mixing and/or evaporating device (12) for an exhaust system (5) of a combustion engine (1), in particular of a motor vehicle, includes a support body (19), which encloses a flat cross section through which a flow can flow running transversely to the axial direction (20) of the device (12) in the circumferential direction (32). The support body (19) comprises two long side walls (21, 22) located opposite each other and two short side walls (23, 24) located opposite each other, wherein the short side walls (23, 24) each connect the two long side walls (21, 22) with each other. At least on one long side wall (21, 22) at least on one axial end (26, 27), a plurality of guide blades (25) is arranged. The guide blades (25) stand away in a direction of the other long side wall (21, 22) and are angled relative to the axial direction (20).

Abstract: The present invention relates to an exhaust system component (1) for an exhaust system of a combustion engine, in particular of a motor vehicle, with a housing (2) having at least one housing wall (4), which separates an interior space (5) of the housing (2) exposed to an internal pressure (Pi) during the operation of the exhaust system from a surroundings (6) surrounding the housing (2) and having an ambient pressure (Pu). In order to improve the durability of the component (1) even with small wall thicknesses, at least one stiffening element (3) can be provided, which is fastened to and arranged on the housing (2) such that it counteracts an internal pressure (Pi) that is above the ambient pressure (Pu) induced by the deformation of the housing wall (4).