Abstract: An exhaust manifold includes: a double collecting pipe formed of inner and outer pipes; and an inner pipe retainer formed of a pair of semi-circular portions and a connecting portion. The inner pipe includes a collecting pipe portion and bifurcated branch pipe portions. The outer pipe covers outer peripheral portions of the collecting and branch pipe portions. The semi-circular portions are respectively connected to outer peripheral portions of branched branch pipe portions and an inner peripheral portion of the outer pipe. The connecting portion connects the semi-circular portions. The inner pipe retainer is interposed between the inner pipe and the outer pipe and is connected to the inner pipe and the outer pipe to define a certain gap therebetween. Exhaust gas from exhaust ports of a set of cylinders among a plurality of cylinders of an engine is introduced into the collecting pipe portion through the branch pipe portions.

Abstract: An exhaust manifold includes: a double collecting pipe having an inner pipe, including a collecting pipe portion and branch pipe portions, and an outer pipe, covering the collecting and branch pipe portions and thicker than the inner pipe; and an inner pipe retainer having semi-circular portions and a connecting portion, and thicker than the inner pipe and thinner than the outer pipe. The inner pipe retainer connects the inner and outer pipes with a gap therebetween. Exhaust gas from exhaust ports of a set of cylinders is introduced into the collecting pipe portion through the branch pipe portions. The total spot-welded area of the outer peripheral portions of the branch pipe portions and the inner peripheral portions of the semi-circular portions is larger than that of the inner peripheral portion of the outer pipe and the outer peripheral portions of the semi-circular portions.

Abstract: An in-line four-cylinder internal combustion engine wherein exhaust ports (8, 9) of a pair of cylinders positioned at the center are connected to a single merged exhaust port (11) and this merged exhaust port (11) is connected through a first exhaust pipe (19) to a catalytic converter (18). On the other hand, exhaust ports (7, 10) of pairs of cylinders positioned at the two ends are connected through a second exhaust pipe (21) to a catalytic converter (18). A length of the first exhaust pipe (19) from the merged exhaust port (11) to the catalytic converter (18) is made shorter than the length of the second exhaust pipe (21) from the exhaust ports (7, 10) to the catalytic converter (18).

Abstract: A multi-line exhaust system has at least two exhaust lines which are substantially separate from one another and at least one measurement sensor for measuring at least one characteristic variable of the exhaust gas. In which system, the at least one measurement sensor can be brought into contact with at least two exhaust lines. In such an exhaust system the measurement sensor determines at least one characteristic variable of the exhaust gas in two or more different exhaust lines, so that the outlay required to monitor the at least one characteristic variable in a plurality of exhaust lines can be significantly reduced compared to if a measurement sensor is formed in each exhaust line.

Abstract: An exhaust manifold connected to exhaust ports of at least three straightly-arranged cylinders of an internal combustion engine is constructed by a primary exhaust pipe which extends from the foremost cylinder of the cylinders in the rearward direction of the engine along the direction of the straight arrangement of the cylinders and a plurality of secondary exhaust pipes which extend from the other cylinders except for the foremost cylinder to the primary exhaust pipe. The secondary exhaust pipes are collected to the primary exhaust pipe so that downstream end portions of the secondary exhaust pipes are wound into the center axis of the primary exhaust pipe at a plurality of points on the center axis, respectively.

Abstract: A muffler includes a case divided into three chambers by two baffles. The first chamber is closest to, and the third chamber is farthest from, the exhaust pipe. An inlet pipe has a first end connected to the exhaust pipe, and a second end in fluid communication with the third chamber. An outlet pipe expels exhaust and water from the first chamber to the exterior. A connecting pipe provides fluid communication between the first and third chambers. The second end of the inlet pipe is above the bottom interior surface of the outlet pipe. The inlet pipe may have holes in the second chamber, above the bottom interior surface of the outlet pipe. The connecting pipe may have holes in the second chamber. The baffles may have holes for the water to flow from the second and third chambers to the first chamber. Also, an exhaust apparatus utilizing the muffler.

Abstract: An exhaust system (1) for an internal combustion engine (2), especially for a diesel engine, includes an exhaust manifold (3) inside which at least one exhaust aftertreatment device is disposed, and at least one DeNox unit that is arranged downstream from a first oxidizing catalyst (4). In order to reduce the NOx emissions a second oxidation catalyst (5) is disposed upstream of the DeNOx unit.

Abstract: A supercharging system, in particular an at least two-stage supercharging system, including a first stage and a second stage for an internal combustion engine having two cylinder banks. The at least two-stage supercharging system includes at least two charge air coolers. An exhaust gas turbocharger representing the first stage and an exhaust gas turbocharger representing the second stage are each situated next to one of the cylinder banks of the internal combustion engine.

Abstract: A porous member is disposed within the exhaust stream of a marine engine at a location where its temperature approximates the temperature of the exhaust stream through normal use of the engine. Exhaust gas flows freely through the non-catalytic porous member, but water passing in a reverse direction through the exhaust system is vaporized as it attempts to flow through the non-catalytic porous member.

Abstract: An exhaust system for a saddle-ride type vehicle provides sufficient volume in a chamber while avoiding interference between the chamber and other parts. The vehicle center of gravity is lowered and differences in exhaust pipe length are reduced. Exhaust pipes are connected to combustion chambers of front and rear cylinder banks of a V-type engine. A chamber is connected to the exhaust pipes and mufflers are connected to the chamber. The chamber has an exhaust pipe connection wall to which the exhaust pipes are connected and opposing muffler connection walls. The mufflers are connected to positions on the muffler connection walls closer to the engine relative to a center in a longitudinal direction of the vehicle.

Abstract: An engine processor (38) processes data for inferring temperature of exhaust gas at an exhaust manifold (18) of an internal combustion engine (10) whose exhaust system (16) contains an after-treatment device (26, 28) for treating exhaust gas and a sensor (30) for providing data for temperature of exhaust gas entering the after-treatment device. The processor processes data from the sensor and other data to infer temperature of exhaust gas at the exhaust manifold by executing an algorithm (FIGS. 3 and 4) that models temperature of exhaust gas at the exhaust manifold as a function of data from the sensor and the other data, including certain constants, certain geometry of the exhaust system, and certain variables related to operation of the engine.

Abstract: Provided is a stainless steel for exhaust gas path members, which has a composition including, in terms of % by mass, at most 0.03% of C, at most 1% of Si, at most 1.5% of Mn, at most 0.6% of Ni, from 10 to 20% of Cr, from more than 0.5 to 0.7% of Nb, from 0.05 to 0.3% of Ti, from more than 1 to 2% of Cu, at most 0.2% of V, at most 0.03% of N, from 0.0005 to 0.02% of B, and optionally at most 0.1% of Al, and further optionally at least one of Mo, W, Zr and Co in an amount of at most 4% in total, with a balance of Fe and inevitable impurities, and which has a texture where the Cu phase and the Nb compound phase having a major diameter of at least 0.5 ?m are controlled to be in an amount of at most 10 grains/25 ?m2 each. The stainless steel exhibits excellent thermal fatigue resistance when applied to exhaust gas path members of both cases where the maximum ultimate temperature is high and low, and has excellent low-temperature toughness.

Abstract: An exhaust manifold connected to exhaust ports of at least three straightly-arranged cylinders of an internal combustion engine is constructed by a primary exhaust pipe which extends from the foremost cylinder of the cylinders in the rearward direction of the engine along the direction of the straight arrangement of the cylinders and a plurality of secondary exhaust pipes which extend from the other cylinders except for the foremost cylinder to the primary exhaust pipe. The secondary exhaust pipes are collected to the primary exhaust pipe so that downstream end portions of the secondary exhaust pipes are wound into the center axis of the primary exhaust pipe at a plurality of points on the center axis, respectively.

Abstract: An exhaust gas recirculation system for a use with an engine having a plurality of cylinders is disclosed. The exhaust gas recirculation system may have an intake passage configured to direct combustion air to all of the plurality of cylinders, and an exhaust passage configured to receive exhaust from fewer than all of the plurality of cylinders. The exhaust gas recirculation system may also have a plurality of separate exhaust conduits in parallel communication with the exhaust passage and configured to direct exhaust from the exhaust passage to the intake passage at multiple locations along a length direction of the intake passage. The multiple locations may be separated from each other by a volume within the intake passage, and the volume may be a function of a total number of the plurality of cylinders, a number of the plurality of cylinders contributing exhaust to the exhaust passage, and a number of the multiple locations.

Abstract: The invention relates to an exhaust gas flow regulator installed in an exhaust pipeline and to an exhaust pipeline with such an regulator installed therein. The invention also relates to the manufacture and use of the exhaust gas flow regulator and the exhaust pipeline. The exhaust gas flow regulator (2, 12, 22) according to the invention comprises catalytic corrugated metal plates (2f) with the corrugation direction of their folds being in an angle towards the average flow direction of the exhaust gas (G) for regulating the exhaust gas flow at least in the lateral direction.

Abstract: The invention relates to an exhaust gas flow equalizer installed in an exhaust manifold and to an exhaust manifold with such an equalizer installed therein. The invention also relates to the manufacture and use of the exhaust gas flow equalizer and the exhaust manifold. The exhaust gas flow equalizer (2) according to the invention includes catalytic corrugated metal plates (2f) placed cross-wise to each other with the corrugation direction of their folds being in an angle towards the average flow direction of the exhaust gas (G) for equalizing the exhaust gas flow at least in the lateral direction.

Abstract: An exhaust device for an outboard motor multi-cylinder engine includes an exhaust passage having a first end connected to the multi-cylinder engine, a catalyst provided in the exhaust passage, and an exhaust chamber connected to a second end of the exhaust passage as well as to a main exhaust passage positioned below the engine. The exhaust passage includes upstream portions for cylinders which have inlet ends respectively connected to exhaust gas outlets of a plurality of cylinders whose exhaust valve opening periods are different, a collecting portion arranged to connect the outlet ends of these upstream portions to each other, and a plurality of downstream portions which are branched from the collecting portion and connected commonly to the exhaust chamber. The catalyst is provided in each of the plurality of downstream portions.

Abstract: Disclosed is an exhaust manifold for engaging with a plurality of exhaust ports of a multi-cylinder engine for guiding an exhaust gas discharged out of from the multi-cylinder engine. The exhaust manifold includes a plurality of primary conduits and a secondary conduit. Each of the primary conduits includes inlet and exit end portions. Each of the inlet end portions is capable engaging with a corresponding exhaust port. The secondary conduit includes at least one inlet port and at least one exit port. The exit end portions of each of the primary conduits converges with the at least one inlet port to configure a passageway. With the convergence of each of the exit end portions port with the at least one inlet port, there is gradual increase in a cross sectional area of the passageway for guiding the exhaust gas to be discharged out from the multi-cylinder engine.

Abstract: An internal combustion engine wherein an exhaust pipe is connected to an exhaust outlet opening of an integral exhaust manifold-type cylinder head and a sensor having a sensing part liable to be damaged by deposition of moisture is arranged at an exhaust inlet part of the exhaust pipe. Exhaust ports of a cylinder positioned at the center are formed so that the sensing part of the sensor not contained in the extended tubular shaped surfaces of the openings of the exhaust ports of the cylinder positioned at the center to the exhaust merging portion.

Abstract: A collecting part structure of an exhaust manifold, in which connecting portions of branch pipes 2 to 5 to a head flange 1 are arranged on a straight line, has a reinforcement member that includes two flat plates 10 and 11 to collect and fix downstream side portions f the branch pipes 2 to 5. The flat plates have the same length as an inner diameter of a collecting part 6, and are formed at central positions thereof with slits S1 and S2 facing each other to be joined with each other like a cross shape. The flat plate 11 with the slit S2 at an exhaust-gas upstream side, of the two flat plates 10 and 11, is arranged on a line A2 parallel to a line on which the connecting portions of the branch pipes 2 to 5 to the head flange 1 are arranged.

Abstract: An exhaust gas muffler for an internal combustion engine, especially the engine of a manually-guided implement such as a power saw, a cut-off machine, or the like. The muffler has a housing having an inlet for exhaust gases and an outlet out of the housing. The housing has an outer wall over which the exhaust gases from the outlet flow. To achieve an adequate cooling of the exhaust gas muffler and the discharging exhaust gases, the exhaust gases out of the outlet draw in atmospheric air between the exhaust gases and the outer wall of the housing.

Abstract: An internal combustion engine control apparatus controls an internal combustion engine including: an exhaust passage including branch portions provided for the left and right banks and a common portion in which an exhaust gas purification device is provided; and a fuel supply system that supplies fuel to the respective engine cylinders. In the internal combustion engine, in order to recover the exhaust gas purification device, a bank control is executed in which the air-fuel ratio of the cylinders of the left bank is made rich while the air-fuel ratio of the cylinders of the right bank is made lean. The internal combustion engine is capable of running on alcohol-containing fuel and has an alcohol concentration sensor. The amount of unburned fuel to be supplied to the exhaust gas purification device during the bank control is adjusted based on the alcohol concentration in fuel.

Abstract: An exhaust manifold includes a plurality of branch pipes that guide exhaust gas discharged from cylinders, and a junction pipe that converges downstream-side end portions of the plurality of branch pipes in a flow direction of exhaust gas, and that has a drawn portion that is formed by drawing so as to be constricted in a radial direction of the drawn portion. The junction pipe is provided with a sensor that detects the oxygen concentration in exhaust gas. The sensor is provided at a downstream side of a deepest draw inside diameter in the flow direction of exhaust gas. The deepest draw inside diameter is the smallest inside diameter of the drawn portion.

Abstract: A structural part, especially a shielding component, has structural parts (10, 12, 14, 16) at least in part differently configured with respect to their surface extent and/or the directional pattern. At least one structural part (10) of a first type is provided with a curvature at least partially increasing in the direction of at least one edge area (20). Structural parts (12) of a second type at least in part follow the curvature (18) of the first structural part. In each curved edge area (20), at least one structural part (14) of a third type is provided, according to the position in which the structural parts (12) of the second type are oriented and extend continuously at least in the area of the change in the curvature toward the edge area (20) along the first structural part (10). The edge area is strengthened by an additional structural part which, in addition to low-vibration behavior, leads to a clear reduction of acoustic propagation of noisy engine components.

Abstract: Disclosed is an exhaust system for discharging combusted gases from the cylinder of a vehicle engine, which comprises an exhaust manifold with a plurality of exhaust gas runners, wherein the exhaust gas runners are spaced so as to avoid an exhaust gas interference.

Abstract: An exhaust manifold A includes, in its collecting part structure, a plurality of branch pipes 2 to 5 that are connected with a flange head 1, a collecting part 6 that collects and contains exhaust-gas downstream side end portions 2a to 5a of the branch pipes 2 to 5, a partition plate 10 that is arranged in a state where its exhaust-gas downstream side end portion 10a projects in the interior of the collecting part 6, and a sensor attachment boss part 9 that is fixed by weld line X on a part of an outer circumferential portion of the collecting part 6 in a state where it faxes an insertion hole 6f formed in the collecting part 6.

Abstract: An exhaust manifold and related method have a hybrid clamshell construction including an outer manifold half stamped from a first metal and having a first wall thickness, as well as an inner manifold half stamped from a second metal that is different from the first metal and has a second wall thickness which is different from the first wall thickness. Opposite side edges of the outer and inner manifold halves are rigidly interconnected to define a hollow manifold bottom. Port and outlet flanges are rigidly attached to inlet and outlet sides of the manifold body.

Abstract: A mounting structure is provided for an air-fuel ratio sensor on an exhaust pipe in a motorcycle in which a concentration of oxygen in an exhaust gas can be detected efficiently and accurately by the air-fuel ratio sensor. The air-fuel ratio sensor is mounted on a convergent connector of exhaust pipes, which, in turn, are operatively connected to the cylinders of a multi-cylinder engine. The air-fuel ratio sensor is located upstream of catalytic converters provided in the exhaust pipes, and may be mounted so as to be oriented substantially vertically when the motorcycle is in an upright configuration, or alternatively, may be inclined toward the rear of the motorcycle.

Abstract: In a supercharged internal combustion engine having a plurality of cylinders which are arranged in at least one cylinder bank, preferably a V-type engine with an exhaust gas turbocharger including a compressor, which is arranged in an intake line of the internal combustion engine and a turbine which is arranged in an exhaust gas collection line, the exhaust gas of a plurality of cylinders of the cylinder bank is combined in an exhaust gas collection line, while at least one cylinder of a cylinder bank has a separate exhaust gas line which bypasses the exhaust gas turbocharger and joins the exhaust gas line downstream of the turbine.

Abstract: The invention relates to an exhaust manifold (12) consisting of: an outer casing (18) comprising an outer shell (22) and a flange (24) which is welded to the outer shell (22) and which is equipped with a surface (24B) that is supported by an engine head and at least one hole (28) which opens onto said support surface (24A); and at least one internal conduit (20) which is disposed in the outer casing (18) and which terminates in a hole (28). The invention is characterised in that: each internal conduit (20) is formed from a ceramic material; and each internal conduit (20) extends through the flange (24) by means of each hole (28) and comprises an extension (32) that extends outside the outer casing (18) towards the exterior and beyond the support surface (24A).

Abstract: An exhaust system includes first and second exhaust pipes each of which has an upstream end communicating with an engine and a downstream end. The exhaust pipes are of different lengths. A length equalizer includes an outer pipe and an inner pipe disposed within the outer pipe. Once end of the inner pipe communicates with a space between the inner and outer pipes. The longer of the two exhaust pipes communicates with the space between the inner and outer pipes of the length equalizer. The shorter of the two exhaust pipes communicates directly with the inner pipe of the length equalizer. The distance between the downstream end of the longer exhaust pipe and the inner end of the inner pipe of the length equalizer is substantially equal to the difference in length between the longer and shorter exhaust pipes.

Abstract: A plurality of interchangeable straight and curved short cylindrical module segments are selectively and releasably joined together end-to-end manually and rotated relative to one another to form full-scale three-dimensional models of desired complex shapes of tubing, pipe, and conduit configurations. The segments are provided in sets having outside diameters corresponding to the outside diameters of conventional tubing, pipe or conduit and have a circumferential scale at each end to visually determine the relative rotation between one segment and an adjoined segment. When assembled, the model provides accurate shapes and dimensions to aid in designing, laying out, cutting, and fabricating tubular members, and for forming tubular configurations from pre-bent metal tubular sections and the proper relative rotation between them.

Abstract: An exhaust manifold including a manifold body made of a first material and at least one heat shield insert provided inside the manifold body and made of a second material. The first material is a low cost material and the second material is a higher grade, temperature-resistant material. The manifold body includes a plurality of runners, collector and an outlet. The shield insert is preferably provided in the collector region adjacent to the outlet. The heat shield insert may have a curved sheet configuration or a tubular configuration depending on applications. The heat shield properly insulates the manifold body from the exhaust gas to protect the manifold body. The exhaust manifold, which is made from a combination of different materials, provides a more cost-effective solution in high temperature applications.

Abstract: A method of repairing a component having interconnected porosity applies a material to the area of the porosity through a cold deposition process. Components repaired by this method are also claimed.

Abstract: A technique that suppresses adhesion of fuel added from fuel addition valves to exhaust passages and suppresses fuel from slipping through exhaust gas purification devices is provided. Timing of the addition of fuel is switched into a period in which instantaneous exhaust gas flow rates in the exhaust passages are different, in accordance with engine operating condition. As a result, when operating condition has a high possibility of fuel adhering to the exhaust pipes, fuel is added when the instantaneous exhaust gas flow rates in the exhaust pipes are high, so that fuel can be easily carried to the vicinity of the exhaust gas purification devices. When the operating condition has a high possibility of fuel slipping through the exhaust gas purification devices, fuel is added when the instantaneous exhaust gas flow rates in the exhaust pipes are low, so that the fuel can not be easily entrained in the exhaust gas to slow movement of fuel.

Abstract: The present invention relates to a mixing element and an exhaust system of an internal combustion engine. The mixing element has two inlet openings and two outlet openings, wherein each inlet opening communicates with both outlet openings.

Abstract: This exhaust manifold comprises: an outer envelope comprising: at least one flange connected to the outer shell and having at least one gas circulation port, the outer envelope having at least one gas circulation port; at least one internal duct (31) arranged inside the outer envelope and opening via a gas circulation port, characterized in that: the or each internal duct (31) is formed, at least for the most part of its length, of a ceramic material and is engaged through the or each port; and it comprises an annular diaphragm (34) that is impermeable to the gases but radially and axially elastically deformable and positioned around the or each internal duct (31), between the or each internal duct (31) and the outer envelope (18), the diaphragm (34) being connected at its periphery to at least one out of the outer envelope (18) and the or each internal duct (20, 31).

Abstract: An exhaust device for a motor vehicle multi-cylinder internal combustion engine including a cylinder head of the engine in which there are exhaust ducts, a first end of each of which is connected to a combustion chamber of the engine and a second end of which opens into a cavity or plenum of an exhausted manifold integrated into the cylinder head of which an outlet duct is externally connected to a device for removing contamination from the exhaust gases of an exhaust line of the vehicle. The cavity or plenum of the manifold is formed in an element attached inside the cylinder head, and the element is thermally decoupled from the cylinder head using a thermal decoupling mechanism.

Abstract: An exhaust system for a combustion engine which comprises at least one exhaust manifold with a plurality of inlet pipes for connection to exhaust ports of the combustion engine. The exhaust system comprises a collector device for merging of the inlet pipes, which has one outlet opening. The outlet opening is connected to subsequent elements of the exhaust system, such as catalytic converter housing. The catalytic converter inflow pipe is guided up to just before the catalytic converter; and the catalytic converter housing is connected directly to the collector housing via a pipe surrounding the catalytic converter inflow pipe. The collector device is made as a one-piece collector housing of a material stiff in bending.

Abstract: A catalytic converter subassembly having at least one component inserted during the manufacture of a cast exhaust manifold, thereby eliminating a costly and undesirable manifold to converter weld. The method and converter subassembly comprise a converter shell for housing a catalyst substrate adapted to be securely attached to an exhaust manifold during manufacture of the manifold to eliminate an undesirable weld between the manifold and converter.

Abstract: An exhaust manifold includes a plurality of branch pipes 2 to 5 and an adapter member 9 that has a ring portion 10 provided at exhaust-gas downstream side end portions 2a to 5a of the branch pipes 2 to 5 and with a reinforcement portion 11. The adapter member 9 and the exhaust-gas downstream side end portions 2a to 5a, which are inserted into the adapter member 9, are fixed with each other by a circular weld line X1 formed along outer circumferences of the exhaust-gas downstream side end portions 2a to 5a of the branch pipes 2 to 5 and also by a weld line X2 formed along the adjacent side wall portions 2b to 5b of the branch pipes 2 to 5.

Abstract: The present invention provides dual-layer to flange weld joint for an exhaust manifold assembly. The manifold includes an inner assembly connected to a flange, and an outer shell spaced apart from the inner assembly to allow for an air gap between the shell and the inner assembly. The outer shell further includes a gap between the end portion of the outer shell and the flange. This gap allows a single exterior weld joint to connect the inner assembly and outer shell to the flange.

Abstract: A combustion engine exhaust assembly. The assembly comprises an exhaust gas passageway that includes a divider plate assembly. The divider plate assembly includes a body and a divider plate wherein at least one of the body and the divider plate are generally formed from a material resistant to at least one of extreme temperature conditions, extreme thermal gradient conditions, and extreme loads. The divider plate assembly is useful in distributing exhaust gases within an exhaust assembly and is generally capable of extending the useful life of an exhaust manifold, for example.

Abstract: The invention relates to an exhaust pipe (20) comprising the following elements which are disposed concentrically, namely: an inner tube which is made from an inorganic matrix composite (22); an outer metal tube (24); and a support layer (26) which is made from a fibrous material. The thickness of the support layer (26) measures between 2 mm and 10 mm and preferably between 3 mm and 6 mm. The maximum support pressure exerted by the support layer (26) on the inner tube (22) is between 10?4 MPa and 10?1 MPa.

Abstract: An exhaust system of the internal combustion engine comprises upstream main paths for cylinders that are attached to a side of a cylinder head and extend towards a side of the engine, and are connected to the respective cylinders; a downstream main path in which the upstream main paths join so as to become one flow path; a main catalytic converter provided on the downstream main path; bypasses that are split from the upstream main paths or the downstream main path; a bypass catalytic converter that is provided on the bypass; and flow path switching valves that open and close the upstream main paths so that exhaust discharged from the cylinders flows into the bypass. The bypass catalytic converter is provided below the upstream main paths.

Abstract: The present invention relates to an exhaust manifold for an internal combustion engine, in particular in a motor vehicle, comprising a housing from which a plurality of inlet pipes emanate, which, in the built-in state, lead to cylinders of the internal combustion engine, and comprising a flange, which is welded to the inlet pipes and which, in the built-in state, is screwed to the cylinder head of the internal combustion engine by means of a screw connection. The fatigue strength of the exhaust manifold can be improved by subdividing the flange into at least two partial flanges in a longitudinal direction of the exhaust manifold.

Abstract: The present invention relates to an exhaust gas collector for an exhaust system of an internal combustion engine, in particular in a motor vehicle, having two internal shell bodies which each connect a plurality of inlet openings in a communicating fashion to an outlet opening, having an external shell body which encloses a receptacle space in which the two internal shell bodies are at least partially arranged. In order to improve the response behavior of a turbocharger, which can be connected to the exhaust gas collector, a dividing wall is proposed which divides the receptacle space into two partial spaces, one of the two internal shell bodies being at least partially arranged in each of the partial spaces.

Abstract: An engine in which an exhaust manifold is integrally formed with a cylinder head may include the exhaust manifold in which at least one passage, which is connected to at least one exhaust port disposed in a first cylinder, and at least one passage, which is connected to at least one exhaust port disposed in a second cylinder, are formed, wherein the passage at the first cylinder and the passage at the second cylinder join together to communicate with a first single exhaust outlet.

Abstract: A cylinder head having a plurality of integrally formed port-exhaust manifold assemblies therein, wherein the port-exhaust manifold assembly is integrally formed in the cylinder head by extending a plurality of exhaust port of an engine to function as an exhaust manifold and the plurality of the port-exhaust manifold assemblies is arranged in a triangle when each center portion of outlet portions thereof are connected.

Abstract: An air gap insulated exhaust manifold includes several inlet tubes which are fit into one another so as to be movable relative to each other and complement each other so as to constitute a collecting chamber. The inlet tubes are surrounded by an outlet tube, an air gap resulting between the inlet and outlet tubes. Two shell-type intermediate plates are provided in this air gap and complement each other so as to constitute a hollow body, which prevents that any leakage flows directly hit the outlet tube. The intermediate plates are produced by deep-drawing a pimpled foil.