Abstract: Exhaust gas aftertreatment units are provided. The units have an encapsulated design that is constructed in a modular manner from disk-shaped components. Exhaust gas flow occurs in the direction of a disk plane, wherein the components are surrounded by frames that are consecutively, in particular elastically, connected and clamped to each other transverse to the disk plane.

Abstract: An exhaust post-treatment device is designed in a layered fashion and comprises an exhaust cleaning arrangement lying between a supply chamber and a transition chamber with soot filters lying at both sides of a denitrification-catalytic converter unit, with the transition chamber comprising a mixing chamber open towards the denitrification-catalytic converter unit, in which starting at the soot filters via separate guide channels, the exhaust is injected in the opposite direction of flow and which mixing chamber is limited by guide panels, which form walls of the guide channels extending encompassing along the housing towards the mixing chamber.

Abstract: An exhaust post-treatment device is designed in a layered fashion and comprises an exhaust cleaning arrangement lying between a supply chamber and a transition chamber with soot filters lying at both sides of a denitrification-catalytic converter unit, with the transition chamber comprising a mixing chamber open towards the denitrification-catalytic converter unit, in which starting at the soot filters via separate guide channels, the exhaust is injected in the opposite direction of flow and which mixing chamber is limited by guide panels, which form walls of the guide channels extending encompassing along the housing towards the mixing chamber.

Abstract: An exhaust gas aftertreatment unit (1) having an encapsulated design is constructed in a modular manner from disk-shaped components (2), which each receive exhaust gas aftertreatment units (3) and which are connected to supply connections (24, 25) on the encapsulated side with the flow occurring in the direction of the disk plane, wherein the components (2) are surrounded by frames (5) that are consecutively, in particular elastically, connected and clamped to each other transversal to the disk plane.

Abstract: The invention relates to an exhaust gas line for exhaust gas from at least one cylinder of an internal combustion engine, having at least one collecting housing (1) with a connection to an exhaust gas recirculation system (2). The collecting housing (1) is designed as a section of the exhaust gas line for the internal combustion engine.

Abstract: In an exhaust gas treatment component with a ceramic body for the purification of exhaust gases and a method for making such a component, the ceramic body is disposed in a sheet metal housing consisting of a housing base from which housing sections extend which are hinged to the housing base by webs and which form together a tubular slotted housing part surrounding the ceramic body, the housing sections being tiltable outwardly about the webs for facilitating insertion of the ceramic body into the housing.

Abstract: In an exhaust gas treatment component with a ceramic body for the purification of exhaust gases and a method for making such a component, the ceramic body is disposed in a sheet metal housing consisting of a housing base from which housing sections extend which are hinged to the housing base by webs and which form together a tubular slotted housing part surrounding the ceramic body, the housing sections being tiltable outwardly about the webs for facilitating insertion of the ceramic body into the housing.

Abstract: The invention relates to an exhaust gas line for exhaust gas from at least one cylinder of an internal combustion engine, having at least one collecting housing (1) with a connection to an exhaust gas recirculation system (2). The collecting housing (1) is designed as a section of the exhaust gas line for the internal combustion engine.

Abstract: Disclosed is a liquid cooled internal combustion engine, comprising a plurality of cooling circuits and one or several liquid radiators connected thereto. In order to produce one of several possible configurations of cooling circuits and liquid radiators, a cooling liquid guide housing comprising a plurality of first flow sections associated with the cooling circuits, a distributor housing comprising a plurality of second flow sections which are connected to the liquid radiators, and an intermediate element arranged between the liquid guide housing and the distributor housing are provided. The intermediate element has a specific arrangement of open passage sections between the first flow sections of the cooling liquid guide housing and the second flow sections of the distributor housing, corresponding to one of several possible configurations of cooling circuits and liquid radiators.

Abstract: The production of harmful substances during the operation of multi-cylinder diesel engines is reduced by separating the cylinders of the engine into two groups in combination with an exhaust gas return from one group to the other. The first group includes a plurality of the cylinders (2 to 6). The second group includes at least one cylinder (7), which is separated from the first group as far as combustion is concerned. A first fresh air suction intake (9) supplies fresh air to the group of first cylinders (2 to 6). An exhaust gas return device (24) feeds either directly or indirectly exhaust gas from the at least one second cylinder (7) through the first fresh air suction intake (9) to the group of first cylinders (2 to 6). A second fresh air suction intake (10) supplies fresh air to the second group of cylinders (7). The second fresh air suction intake (10) may also receive some exhaust gas which is then combusted by an additional fuel supply in the second fresh air suction intake (10).

Abstract: The invention relates to an intake system for an internal-combustion engine charged in one or two stages. The intake system is to be used with as few changes as possible in both a one-stage as well as a two-stage supercharging. The exhaust gas turbochargers, the charge air coolers and the air collecting housings as well as the interconnect pipes between these system parts and the pipes to the inlet ducts of the cylinder heads are used in the same arrangement in both a one-stage and a two-stage supercharging. The arrangement of the charge air cooler used in the one-stage supercharging, is the same as the high-pressure charge air cooler of the two-stage supercharging. The arrangement of the exhaust gas turbochargers in the one-stage supercharging, is the same as that of the high-pressure exhaust gas turbochargers in the two-stage supercharging.

Abstract: The invention relates to an exhaust gas line for internal-combustion engines which is essentially free of tension at normal engine operating temperature. The exhaust gas line is enclosed by a water-cooled and gastight housing and is manufactured from a helically wound metal strip. Tensions that are the result of axial thermal expansion due to the temperature of the engine are avoided because the edges of the metal strip, in a cold state of the exhaust gas line, are aligned with respect to each other to produce a helical gap therebetween. The gap is just closed due to axial expansion of the exhaust gas line at normal engine operating temperature. Tensions that result from a radial expansion of the exhaust gas line are avoided because the exhaust gas line is mounted in a cold state while being subjected to a radial prestress. The prestress is just compensated for as a result of radial expansion at the normal engine operating temperature.

Abstract: A turbo supercharging system for an internal-combustion engine having controllable plural charge air compressors wherein the charge air compressors are in a permanent driving connection with an exhaust gas turbine during all operating times of the internal-combustion engine. The control of charging air is by switching the flow through the compressors; wherein at engine idle, flow is through a low capacity compressor and a high capacity compressor, exhausts to atmosphere; wherein at an intermediate partial load condition where flow is through the high capacity compressor and the low capacity compressor exhausts to atmosphere; wherein at a full load condition the compressors are serially connected together to feed the internal-combustion engine.

Abstract: A piston internal-combustion engine, with an exhaust gas collector and a charge air collector, having a supercharging operation, has at least three exhaust gas turbochargers fastened next to one another to the side wall of a gas-tight box. The exhaust gas collector of the engine is connected with a first exhaust gas inlet of a first exhaust gas turbine of a first exhaust gas turbocharger. The first exhaust gas turbocharger is centrally located among the three exhaust turbochargers and an exhaust gas flow divider is rotatably arranged on the first exhaust gas outlet such that, in a first position, the exhaust gas flow divider connects the first exhaust gas outlet of the central exhaust gas turbocharger with the second exhaust gas inlets of the two adjacent exhaust gas turbochargers and, in a second position, the exhaust gas flow divider connects the first exhaust gas outlet of the central exhaust gas turbocharger directly to an exhaust pipe.

Abstract: One of the exhaust gas turbochargers of a plurality of parallel turbochargers is constructed to be disconnectable and connectable by the arrangement of one controllable exhaust gas blocking device in the exhaust gas pipe in front of the exhaust gas turbine and one automatically operating charge air blocking device in the suction pipe of the charge air compressor. A fast power increase to the nominal power of the internal-combustion engine is achieved, if a bypass pipe with a controllable bypass blocking device is arranged at the switchable exhaust gas turbocharger, this bypass blocking device being constructed as a transverse connection between the suction pipe of the charge air compressor of the exhaust gas turbocharger, which cannot be disconnected, and the suction pipe of the charge air compressor downstream of the charge air blocking device of the disconnectable and connectable exhaust gas turbocharger. The thermal and mechanical overloading of the connected exhaust gas turbocharger is therefore avoided.

Abstract: The fastening of the thin-walled exhaust pipe inside the liquid-cooled covering takes place by means of screws which are distributed in a cross-sectional plane of the exhaust pipe at the circumference. For receiving the screws, brackets are arranged in the wall of the exhaust pipe which have an internal thread corresponding to the screws. In the mounted state, in the area of each bracket, a radially smaller dimensioned space exists between the exhaust pipe and the covering, which smaller space is eliminated after the tightening of the screws. Instead, the pipe is deformed in the cross-sectional plane of the screws in the sections between the brackets. The extent of the deformation depends on the magnitude of the thermal expansion of the pipe to be expected at the operating state, no constraining forces therefore occur at the pipe which endanger the operation and which result from an obstructed thermal expansion.

Abstract: A hood covering the space between cylinder banks of an internal-combustion engine which are arranged in a V-shape is provided for the gastight enclosure of a ram pipe arranged in an area between cylinder banks and exhaust pipes leading the fuel gases from the cylinders to the ram pipe. At this type of a hood, sealing surfaces are obtained with respect to the crankcase as well as with respect to the cylinder heads. The hood can be constructed with a central hood part which is fastened to the crankcase and only has contact surfaces with respect to the crankcase, but not with respect to the cylinder heads. Wedge-shaped hood parts, which are constructed in the form of elbows, are arranged in a V-shaped opening between the central hood part and the cylinder heads and are pulled into the V-shaped opening by means of necked-down bolts. Common sealing surfaces exist with the cylinder heads and the central hood part.