Entries |
Document | Title | Date |
20080229735 | INTAKE AND EXHAUST TUNING SYSTEM - An intake and exhaust tuning system is disclosed. The exhaust system includes a collector slidably mounted within the exhaust fluid path and adjustable by an actuator to change the fluid path length between the collector and the exhaust ports of an engine. The intake tuning system includes a sliding member engaging parallel straight sections of tubes forming the intake system. The position of the sliding member is adjusted to change the length of the intake fluid path. Sealing members suitable for use in the intake and exhaust tuning systems are also disclosed. | 09-25-2008 |
20080289323 | Exhaust Gas System - An exhaust gas system for an internal combustion engine, in particular a motor vehicle engine, is provided having, in one form, two cylinder banks arranged at an acute angle to one anther and each having at least one exhaust gas outlet, a so-called V-engine, having exhaust gas guide elements arranged in the region of the inner angle, including a housing surrounding the exhaust gas outlets of both cylinder banks in a gas tight manner and having at least one exhaust gas outlet opening is characterized in that the housing is made in two parts, with a first part which is connected to the one cylinder bank and surrounds its exhaust gas outlets and with a second part which is connected to the other cylinder bank and surrounds its exhaust gas outlets; in that the two parts each have a side facing the other part and having at least one housing opening via which the two parts communicate with one another; and in that an expansion compensation element is arranged between the two parts and surrounds the housing opening of the two parts in a gas tight manner. | 11-27-2008 |
20080302095 | DEFLECTOR STYLE EXHAUST MANIFOLD - An exhaust manifold for an engine having at least one combustion chamber and multiple exhaust valves arranged on a first plane is provided with a housing formed to provide a longitudinally extending main exhaust gas passage on a second plane terminating in an outlet at one end. A plurality of discrete, laterally spaced, inlet branch passages include a floor and a ceiling which are initially level with the exhaust valve for a distance equal to one-half the width of the inlet branch passage prior to sloping downward toward the main exhaust gas passage. One of the inlet branch passages is positioned at an end of the housing opposite the exhaust gas passage outlet. The remaining inlet branch passages include integrally formed deflector members arranged to provide an angular change of flow direction requiring exhaust gas to enter the main exhaust gas passage in the downstream direction. | 12-11-2008 |
20090000286 | ASSEMBLY FOR FITTING TOGETHER EXHAUST PIPES IN MULTI-CYLINDER ENGINE - An assembly in which a plurality of exhaust pipes in a multi-cylinder engine is fitted together in a single unit and in which exhaust gases do not create eddy currents or turbulence in the areas where the pipes are fitted together. The configuration is designed such that, to prevent pockets from forming between a skirt and a plurality of sockets formed in a perforated cap, parts of each of the sockets and part of the skirt are arranged linearly relative to each other so as not to form an eddy current. | 01-01-2009 |
20090007552 | Exhaust manifold having improved NVH characteristics - An exhaust manifold and method of manufacturing the same is provided that includes at least one tube within shells of an exhaust manifold. The tube limits fluid communication from the tube into the shells of the exhaust manifold. An inlet flange is connectable to the exhaust manifold and is attachable to a cylinder head of a combustion engine. Exhaust gases expelled from the cylinder head are transmitted into the exhaust manifold. At least a portion of the exhaust gases pass through the tube. The exhaust manifold reduces NVH and cures emission control issues. | 01-08-2009 |
20090013680 | VEHICLE COMPONENT AND ENGINE COMPONENT FOR SUPPLYING SECONDARY AIR - An AI pipe ( | 01-15-2009 |
20090031716 | Exhaust Manifold - A manifold for exhaust gases from a motor vehicle engine, includes upper and lower half-shells ( | 02-05-2009 |
20090064670 | EXHAUST MANIFOLD MADE OF HEAT-RESISTANT CAST STEEL - An exhaust manifold made of heat-resistant cast steel comprising pluralities of flanges each having a hole connected to each exhaust port of a cylinder head of an engine with bolts, pluralities of ports connected to the flanges, and a convergence portion in which the ports are converging, the thickness of the flanges being 80-150% of that of the ports. | 03-12-2009 |
20090113884 | EXHAUST PIPE BULKHEAD ASSEMBLY - An assembly for establishing a water-tight seal for a conduit passing through a wall or other structure wherein the conduit conveys heated fluid, such as exhaust gasses. The assembly is adapted to minimize the heat transferred to the wall or other structure by creating a circuitous heat transfer path in conjunction with thermally insulating materials. | 05-07-2009 |
20090126355 | Exhaust Manifold - In an exhaust manifold, a plurality of branch pipes is bent downward from a head flange to form like an L-letter shape, where exhaust-gas upstream side end portions of the pipes are connected with an engine through the head flange and exhaust-gas downstream side end portions thereof are connected with a pipe collecting part which is provided with a sensor for detecting a state of exhaust gas. The pipe collecting part has a reduced diameter portion where a length of the pipe collecting part in a longitudinal direction of the head flange is set shorter than that of the pipe collecting part in a thickness direction of the head flange. The sensor is provided on the reduced diameter portion. | 05-21-2009 |
20090139219 | EXHAUST CONDUIT - The invention concerns an exhaust conduit ( | 06-04-2009 |
20090139220 | AIR-GAP INSULATED EXHAUST MANIFOLD - 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. | 06-04-2009 |
20090151343 | Integrally Formed Engine Exhaust Manifold and Cylinder Head - 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. | 06-18-2009 |
20090158723 | Exhaust Manifold - 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. | 06-25-2009 |
20090158724 | Exhaust Gas Collector - 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. | 06-25-2009 |
20090183502 | EXHAUST PIPE - The invention relates to an exhaust pipe ( | 07-23-2009 |
20090188247 | Dual-layer to flange welded joint - 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. | 07-30-2009 |
20090199551 | EXHAUST MANIFOLD - An exhaust manifold includes a plurality of branch pipes | 08-13-2009 |
20090241528 | Composite Exhaust Manifold - 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 ( | 10-01-2009 |
20090249774 | Exhaust Manifolds Including Heat Shield Assemblies - 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. | 10-08-2009 |
20090266065 | DOUBLE-SHELL MANIFOLD - The invention relates to an exhaust manifold ( | 10-29-2009 |
20090266066 | EQUAL LENGTH Y-COLLECTOR - 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. | 10-29-2009 |
20090282820 | Exhaust manifold with hybrid construction and method - 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. | 11-19-2009 |
20090288405 | COLLECTING PART STRUCTURE OF EXHAUST MANIFOLD - An exhaust manifold A includes, in its collecting part structure, a plurality of branch pipes | 11-26-2009 |
20100011755 | COLLECTING PART STRUCTURE OF EXHAUST MANIFOLD - A collecting part structure of an exhaust manifold, in which connecting portions of branch pipes | 01-21-2010 |
20100011756 | EXHAUST DEVICE OF INTERNAL COMBUSTION ENGINE - 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. | 01-21-2010 |
20100018192 | EXHAUST MANIFOLD FOR MULTI-CYLINDER ENGINE - 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. | 01-28-2010 |
20100037601 | EGR system having multiple discharge locations - 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. | 02-18-2010 |
20100126156 | Exhaust manifold - An exhaust gas system includes an exhaust manifold, in particular a single-wall exhaust manifold, which includes a plurality of inlet pipes for connection to exhaust gas outlets of an internal combustion engine and a collector device for the combining of the inlet pipes. The collector device has an outlet opening which is connected to downstream elements of the exhaust gas system, wherein the collector device is resistant to bending and the inlet pipes are comparatively flexible with respect to the collector device. The collector device includes an inlet pipe stub which is likewise resistant to bending and which is made for the direct connection to an exhaust gas outlet of an internal combustion engine. | 05-27-2010 |
20100126157 | EXHAUST MANIFOLD - 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. | 05-27-2010 |
20100126158 | EXHAUST MANIFOLD - 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. | 05-27-2010 |
20100162692 | Single-wall manifold - A single-wall manifold having an engine flange, an outlet flange and manifold pipes which are connected at their one end to the engine flange and at their other end to the outlet flange, with a load-transferring connection being provided between the engine flange and the outlet flange in addition to the manifold pipes to improve the load transfer between the outlet flange and the engine flange. | 07-01-2010 |
20100199651 | TUBE STRUCTURE FOR EXHAUST COMPONENT - A vehicle exhaust component includes an outer shell defining an internal cavity, at least one baffle located within the internal cavity, and at least one tube supported by the baffle. The baffle is fixed to the outer shell and includes at least one opening. The tube has first and second tube ends with one of the first and second tube ends being supported within the opening in the baffle. At least one slot is formed within the one of the first and second tube ends at the at least one opening. The slot facilitates noise reduction during cool down of the vehicle exhaust component. | 08-12-2010 |
20100251704 | Multiple-cylinder internal combustion engine having cylinder head provided with centralized exhaust passageway - A cylinder head | 10-07-2010 |
20110000200 | HEAT-RESISTANT, AUSTENITIC CAST STEEL AND EXHAUST MEMBER MADE THEREOF - Heat-resistant, austenitic cast steel comprising by mass 0.3-0.6% of C, 1.1-2% of Si, 1.5% or less of Mn, 17.5-22.5% of Cr, 8-13% of Ni, 1.5-4% as (W+2Mo) of at least one of W and Mo, 1-4% of Nb, 0.01-0.3% of N, 0.01-0.5% of S, the balance being Fe and inevitable impurities, and meeting the following formulae (1), (2), (3) and (4): | 01-06-2011 |
20110011070 | Ni-25 Heat-Resistent Nodular Graphite Cast Iron For Use In Exhaust Systems - A nodular graphite, heat-resistant cast iron composition for use in engine systems. The composition contains carbon 1.5-2.4 weight %, silicon 5.4-7.0 weight %, manganese 0.5-1.5 weight %, nickel 22.0-28.0 weight %, chromium 1.5-3.0 weight %, molybdenum 0.1-1.0 weight %, magnesium 0.03-0.1 weight %, and a balance weight % being substantially iron. The composition has an austenitic matrix. Additionally, the composition exhibits excellent oxidation resistance at high temperature and excellent mechanical properties at both room and high temperatures. Thus, the composition can be a lower cost substitute material for Ni-Resist D5S under thermocycling conditions experienced by exhaust gas accessories and housings such as engine exhaust manifolds, turbocharger housings, and catalytic converter housings. | 01-20-2011 |
20110016859 | EXHAUST MANIFOLD OF AN INTERNAL COMBUSTION ENGINE - The invention relates to an exhaust manifold ( | 01-27-2011 |
20110107753 | EXHAUST LINE FOR AUTOMOBILE - An exhaust line connected to the engine of an automobile, includes:
| 05-12-2011 |
20110308238 | EXHAUST MANIFOLD WITH BAFFLE PLATE - An exhaust manifold includes a housing formed of a thin-walled sheet metal part which is shaped in the form of a shell construction and has an upper housing shell and a lower housing shell to define an interior space. Received in the housing in an area proximate to a cylinder head of an internal combustion engine is a baffle plate which separates the interior space of the housing from a motor flange to secure the exhaust manifold to the cylinder head. | 12-22-2011 |
20120006012 | Flange Plate, Flange Connection and Exhaust Manifold - The present invention relates to a flange plate for connecting exhaust pipes to a combustion engine, with at least two connecting sockets integrally moulded on the flange plate, on each of which an exhaust pipe can be fastened, and with a plurality of through openings for fixing the flange plate to the combustion engine. | 01-12-2012 |
20120023916 | Diesel CGR process and structure - Disclosed is a manifold coupled to at least one cylinder of a diesel engine through at least one valve to pass or block gas flow between said manifold and said cylinder, with a specific list of restrictions imposed on said flow. Also, a manifold coupled to at least a pair of the cylinders of a multi-cylinder diesel engine through at least one valve to pass or block gas flow between said manifold and said cylinder, with the same restrictions imposed on said flow. The so formed structure is suitable to CGR. | 02-02-2012 |
20120096842 | EXHAUST MANIFOLD - An exhaust manifold for an internal combustion engine with an exhaust gas conducting inner tube and an outer jacket which is insulated particularly effectively and inexpensively is described. To this end, it is suggested to embody the insulation as an insulating molded part pressed into shape and to arrange it between the jacket and the interior, the insulating molded part containing an insulating fibrous tissue and a binder. | 04-26-2012 |
20120167558 | SUPPORT SYSTEM FOR AN EXHAUST AFTERTREATMENT SYSTEM FOR A LOCOMOTIVE HAVING A TWO-STROKE LOCOMOTIVE DIESEL ENGINE - A support system for an exhaust aftertreatment system for a two-stroke locomotive diesel engine providing a secure mounting of certain components of the exhaust aftertreatment system to the locomotive structure while at the same time allowing for differential thermal expansion (and the resulting physical displacement) of the components. The support system further carries the physical mass of the components of the aftertreatment system while at the same time effectively isolating the aftertreatment system from external loads and forces caused by motions of the locomotive engine and the locomotive frame. | 07-05-2012 |
20120192552 | Exhaust Manifold - An exhaust manifold to be connected to an internal combustion engine with a plurality of exhaust ports in the present invention includes a first upper shell member, a second upper shell member, and a lower shell member. The first upper shell member and the lower shell member are superposed on each other to thereby form a first flow passage to be connected to at least one exhaust port out of the plurality of exhaust ports. The second upper shell member is superposed on the lower shell member with the first upper shell member sandwiched therebetween such that at least a part of the first upper shell member is exposed, to thereby form a second flow passage to be connected to another at least one exhaust port out of the plurality of exhaust ports. | 08-02-2012 |
20120266588 | Exhaust Manifold - 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. | 10-25-2012 |
20120297756 | Exhaust Manifold for an Internal Combustion Engine - An exhaust manifold for an internal combustion engine has at least one exhaust pipe and a flange which can be fastened to an engine block of the internal combustion engine. On the side facing away from the engine block, the flange is provided with a channel which is connected to a fluid line and which is in fluid communication with the interior of the exhaust pipe via a lateral opening in the exhaust pipe. The fluid line opens into the channel on the side of the flange that faces away from the engine block. | 11-29-2012 |
20120312002 | INTERNAL COMBUSTION ENGINE HAVING AN INTERFERENCE REDUCING EXHAUST MANIFOLD - An engine having a cylinder head including an exhaust manifold at least partially integrated therein, the exhaust manifold including an inner separating wall fluidly dividing two merged exhaust lines, each merged exhaust line in fluidic communication with a different pair of adjacent cylinders, and an outer separating wall fluidly dividing a first exhaust line in direct fluidic communication with a first cylinder and a second exhaust line in direct communication with a second cylinder, a lateral width of the inner separating wall greater than the outer separating wall, the lateral axis perpendicular to a longitudinal axis traversing centerlines of each cylinder. | 12-13-2012 |
20130014497 | HOUSING FOR AN INTERNAL COMBUSTION ENGINEAANM Wu; Ko-JenAACI TroyAAST MIAACO USAAGP Wu; Ko-Jen Troy MI USAANM Baker; Rodney E.AACI FentonAAST MIAACO USAAGP Baker; Rodney E. Fenton MI USAANM Walter; Darrel J.AACI RomeoAAST MIAACO USAAGP Walter; Darrel J. Romeo MI US - In one exemplary embodiment of the invention, a housing for an internal combustion engine includes a manifold section configured to receive an exhaust gas flow from cylinders of the internal combustion engine and a turbine section, wherein the turbine section and manifold section are a single member. Further, the housing includes a volute chamber within the turbine section configured to direct the exhaust gas flow to a turbine wheel disposed about a turbine axis and a circumferential septum positioned inside the volute chamber to separate two chambers that are substantially nested about the turbine wheel. | 01-17-2013 |
20130025270 | AUSTENITIC HEAT-RESISTING CAST STEEL AND EXHAUST MANIFOLD USING THE SAME - An austenitic heat-resisting cast steel is disclosed which is composed mainly of Fe and including 0.4˜0.6 wt % of C, 0.5˜1.0 wt % of Si, 2.1˜2.9 wt % of Mn, 2.1˜2.9 wt % of Ni, 18˜22 wt % of Cr, 1.0˜2.0 wt % of Nb, 2.0˜3.0 wt % of W, 0.25˜0.35 wt % of N and other inevitable impurities. More specifically, this austenitic heat-resisting cast steel can beneficially be applied to an exhaust manifold of an automobile to realize a maximum allowable exhaust gas temperature of the exhaust manifold is 950° C.˜1050° C. | 01-31-2013 |
20130061586 | EXHAUST MANIFOLD FOR AN ENGINE AND METHOD FOR MANUFACTURE - A cast exhaust manifold for an engine is disclosed that is fastened to the engine by a number of independent flanges between each pair of which a spacer is positioned to produce an interference fit when the exhaust manifold is at ambient temperature. The use of independent flanges allow the exhaust manifold to expand when heated without creating high levels of internal stress and the spacers prevent undue distortion of the exhaust manifold when the exhaust manifold cools. | 03-14-2013 |
20130067897 | EXHAUST MANIFOLD - An exhaust manifold includes: an inlet portion which collects exhaust gas discharged through a first to a fourth exhaust ports; an outlet portion discharging the exhaust gas; and a tube portion connecting the inlet and the outlet portions. The inlet portion comprises: a first inlet portion one end of which communicates with the first and the second exhaust ports; and a second inlet portion one end of which communicates with the third and the fourth exhaust ports. Since the inlet portion is provided as two considering the combustion sequence, the productability and the economic feasibility can be enhanced, and the surrounding space can be enlarged to enhance the workability, and a simple exterior appearance can be obtained, and interference between exhaust gases can be effectively prevented, and since the size of the exhaust manifold can be increased, an engine load can be reduced to improve the fuel mileage. | 03-21-2013 |
20130091832 | REINFORCED V-BAND CLAMP - A clamp includes a curved band having an inner surface, an outer surface, a first end, and a second end. The band is characterized by a substantially V-shaped cross-section in a radial plane of the band. The inner surface of the band defines the inside contour of the V-shaped cross-section. The clamp also includes a fastener configured to draw together the first and second ends such that the band may be tightened around adjacent flanges of objects to be clamped together. The inner surface is configured to squeeze the flanges together and clamp the objects. The band includes a reinforcement configured to stiffen the substantially V-shaped cross-section and minimize yielding of the cross-section when the objects are being clamped. An engine assembly that includes a first exhaust component and a second exhaust component having respective first and second flanges being squeezed and clamped together via the clamp is also disclosed. | 04-18-2013 |
20130098009 | EXHAUST SYSTEM FOR A COMBUSTION ENGINE - An exhaust system for a combustion engine having a plurality of cylinders, a cylinder head and an engine block is provided. The exhaust system comprises an exhaust manifold, which is integrated in the cylinder head, flow channels, and an exhaust pipe, which is connected to a head flange of the cylinder head. The flow channels each extend from one of the cylinders to a head flange. At least two of the flow channels, which are connected to cylinders that are not ignited in succession, are united within the cylinder head and form a common flow channel. At least one further flow channel, which is connected with a cylinder ignited in succession, is routed separately as far as to the head flange. The common flow channel is united with the further flow channel only in the exhaust pipe. | 04-25-2013 |
20130133316 | EXHAUST MANIFOLD WITH HYBRID CONSTRUCTION AND METHOD - 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. | 05-30-2013 |
20130139493 | HEAT TRANSFER ELEMENT FOR MANIFOLD - A heat transfer element for manifold prevents thermal fatigue of a manifold main body and has good high-temperature strength and oxidation resistance. At least one part of the heat transfer element for manifold is formed from ferritic stainless steel. The ferritic stainless steel contains at least one element, in terms of mass %, of: C: 0.03% or less; Si: 2.0% or less; Mn: 2.0% or less; Cr: 10 to 30%; Nb: 0.8% or less; and Ti: 0.8% or less, and N: 0.03% or less, and the remaining part thereof is formed from Fe and inevitable impurities. _Further, an alloy content of the ferritic stainless steel is adjusted so that an A value in equation (1), where A value=Nb+Ti−4(C+N), is 0.10 or more, and a B value in equation (2), where B value=Cr+15Si, is 18 or more. | 06-06-2013 |
20130152563 | Exhaust Manifolds Including Heat Shield Assemblies - 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. | 06-20-2013 |
20130232959 | EXHAUST MANIFOLD - An exhaust manifold includes a head flange member, a plurality of branch pipe parts and a collector pipe part. The head flange member has a flange main body portion and a cylinder head mounting surface configured and arranged to be attached to a cylinder head of an engine. Each of the branch pipe parts has an upstream end portion with respect to an exhaust gas flow fixed to one side of the head flange member that is opposite from the cylinder head mounting surface. The collector pipe part is connected to a downstream end portion with respect to the exhaust gas flow of each of the branch pipe parts. An area of the cylinder head mounting surface is smaller than a cross sectional area of the head flange main body portion taken along a plane substantially parallel to the cylinder head mounting surface. | 09-12-2013 |
20130232960 | DUAL PIPE EXHAUST MANIFOLD - A dual pipe exhaust manifold includes an inner pipe, an outer pipe and a plurality of spacers. The inner pipe includes a plurality of branch pipes and a plurality of collector pipes. The collector pipes are slidably connected to each other. One end of each of the branch pipe is fixed to a flange section configured and arranged to be attached to a cylinder head of an engine, and the other end of each of the branch pipe is slidably connected to a corresponding one of the collector pipes so that each of the collector pipes is connected to a plural number of the branch pipes. The outer pipe covers a circumference of the inner pipe. The spacers are disposed between the outer pipe and the inner pipe to form a gap therebetween. | 09-12-2013 |
20140013730 | EXHAUST SYSTEM AIR FILTRATION HOUSING - An engine exhaust system attachment is provided that includes a housing a fan, a filter, and a conduit. The housing is configured to enclose an exhaust turbine, an exhaust manifold, and at least a portion of an exhaust pipe. The exhaust turbine, the exhaust manifold, and the exhaust pipe are connected to receive exhaust gas from an engine and are mounted to an engine frame of a device. The fan is configured for mounting to the device to move air. The filter is configured for mounting to the fan to receive the moved air and to provide filtered air. The conduit is configured for connecting the filter to the housing to provide the filtered air to the housing. | 01-16-2014 |
20140041372 | EXHAUST MANIFOLD FOR PREVENTING CONDENSATE AND GAS LEAKAGE IN ENGINE - The present invention relates to an exhaust manifold for preventing condensate and gas leakage in an engine, and more particularly, to an exhaust manifold for preventing condensate and gas leakage in an engine, capable of preventing peripheries of the engine from being contaminated by condensate and/or exhaust gas leaking from interiors of a plurality of exhaust manifolds to the outside through connection portions of the exhaust manifolds. | 02-13-2014 |
20140075927 | HEADER FOR CURVED PIPES - A header for several curved pipes of a motor vehicle carrying exhaust gas, including a first shell and a second shell, which can be connected to one another in a sealed manner by a shell connection that forms a connection plane (E), at least one outlet port for connecting to an exhaust pipe of an exhaust gas system, and several curved-pipe connection ports for connecting the curved pipes, wherein the outlet port is designed as a passage within the respective shell and at least one first curved-pipe connection port is provided, which is designed as a passage within only one of the two shells. | 03-20-2014 |
20140109559 | Exhaust Manifold With Thin Flanges - An exhaust manifold for an engine has at least one collecting pipe for conveying exhaust gases. Several exhaust gas inlets are in fluid communication with the collecting pipe. Several flanges each define one of the exhaust gas inlets. Each flange has an external face adapted to be pressed against a receiving surface of the engine. Several back flanges are each associated to one of the flanges and are adapted to press the corresponding flange against the receiving surface. The flanges are areas of a single plate, which has a thickness between 0.2 and 2 mm. The areas are continuously connected to one another by other areas of the plate. The collecting pipe is not integral with the plate. The manifold has leak tight connections connecting the collecting pipe to each of the flanges. | 04-24-2014 |
20140165544 | MODULAR MANIFOLD FOR MOTOR VEHICLES - A modular exhaust manifold | 06-19-2014 |
20140182276 | UTILITY VEHICLE - An exhaust system of a vehicle used for a parallel multiple cylinder engine in which a plurality of cylinders are aligned in vehicle width directions, at least comprising: an exhaust manifold that is connected to a plurality of exhaust ports formed in a front face of a cylinder head of the engine with respect to a vehicle traveling direction and that extends approximately horizontally in vehicle width directions along a front face of the cylinder head; and an exhaust pipe connected to an exhaust downstream end of the exhaust manifold. | 07-03-2014 |
20140202143 | CYLINDER HEAD - A cylinder head capable of improving a productivity of a cylinder head having an exhaust collecting portion and improving a cooling efficiency of the exhaust collecting portion is disclosed. An exhaust collecting portion | 07-24-2014 |
20140208727 | Partially Integrated Exhaust Manifold - A partially integrated manifold assembly is disclosed which improves performance, reduces cost and provides efficient packaging of engine components. The partially integrated manifold assembly includes a first leg extending from a first port and terminating at a mounting flange for an exhaust gas control valve. Multiple additional legs (depending on the total number of cylinders) are integrally formed with the cylinder head assembly and extend from the ports of the associated cylinder and terminate at an exit port flange. These additional legs are longer than the first leg such that the exit port flange is spaced apart from the mounting flange. This configuration provides increased packaging space adjacent the first leg for any valving that may be required to control the direction and destination of exhaust flow in recirculation to an EGR valve or downstream to a catalytic converter. | 07-31-2014 |
20140290230 | CAST IRON ALLOY AND EXHAUST COMPONENT MANUFACTURED THEREBY - The invention relates to a cast-iron alloy comprising (in wt %) C: 3.0-3.5 Si: 4.1-4.8 Mn: ≦0.4 Mg: 0.02-0.08 Cr: 0.4-1.0 Cu: ≦0.15 Mo: 0.8-1.2 P: <0.05 S: <0.015 the remainder comprising Fe and any impurities. The invention relates also to an exhaust-conducting component for truck engines which comprises the alloy according to the invention. | 10-02-2014 |
20140290231 | EXHAUST DEVICE OF MULTI-CYLINDER ENGINE - An exhaust device for a multi-cylinder engine for connecting both exhaust passage members with a communicating hole formed in each one when the two exhaust passage members are to be spaced apart. A base plate has a through hole communicating with the communicating hole and a cover plate for covering the outside of the base plate. The outer circumferential area of the through hole of the base plate overlaps the outer surface of the exhaust pipe with the entire outer circumferential area of the through hole is welded to the exhaust pipe. The edge portions on both sides of the cover plate are welded to the base plate so as to surround the outer side of the through hole. The area extending between edge portions on both sides of the cover plate is welded to the front and rear edge portions of the base plate. | 10-02-2014 |
20140290232 | EXHAUST PIPE STRUCTURE FOR INTERNAL COMBUSTION ENGINE - A vehicle exhaust system structure capable of easily improving output performance in comparison with a two-cylinder internal combustion engine having the same displacement and outputting an appealing and excellent exhaust sound relating to the two-cylinder internal combustion engine, in a four-cylinder internal combustion engine or a three-cylinder internal combustion engine. An exhaust pipe structure for an internal combustion engine is configured such that exhaust pipes are respectively connected to four cylinders of a four-cylinder internal combustion engine, the two exhaust pipes of the exhaust pipes are formed as long exhaust pipes having a long pipe length while the other two exhaust pipes thereof are formed as short exhaust pipes having a short pipe length, and a difference in a pipe length between the long exhaust pipes and the short exhaust pipes is set to 150 mm or more. | 10-02-2014 |
20140305108 | EXHAUST GAS EVACUATION SYSTEM STRUCTURE FOR INTERNAL COMBUSTION ENGINE - An exhaust system structure for an internal combustion engine is provided with an exhaust manifold and a plate-like heat shielding member. The exhaust manifold has branch pipes and flanges formed at the distal ends of the branch pipes. The heat shielding member covers the exhaust manifold and suppresses the occurrence of heat damage caused by the exhaust manifold. The basal portion of the heat shielding member and the flanges are fastened to the cylinder head by common fastening members. | 10-16-2014 |
20140338314 | ENGINE HAVING INTEGRATED EXHAUST MANIFOLD WITH COMBINED DUCTS FOR INSIDE CYLINDERS AND OUTSIDE CYLINDERS - An internal combustion engine has a cooling jacket at least partially integrated in the cylinder head. The engine has two groups of cylinders: inside cylinders and outside cylinders. Each cylinder has at least one exhaust port, each leading to an individual duct. Individual ducts of outside cylinders converge to form an outside combined duct. In a four-cylinder engine or cylinder head, individual ducts of inside cylinders converge to form an inside combined duct with the inside combined duct remaining separated from the outside combined duct by the cooling jacket. The inside combined duct is farther away from the mounting surface of the cylinder head to the cylinder block than the outside combined duct. The cooling jacket includes upper, middle, and lower cooling jackets and connectors between the upper and lower cooling jackets. | 11-20-2014 |
20140345259 | STRADDLE-TYPE VEHICLE - An engine of a straddle-type vehicle includes first, second, and third cylinders arranged, in this order, from right to left in a front view of the vehicle; first, second, and third intake pipes in communication with the first, second, and third cylinders, respectively; and first, second, and third exhaust pipes in communication with the first, second, and third cylinders, respectively. The first, second, and third exhaust pipes have different lengths and the first, second, and third intake pipes have different lengths. | 11-27-2014 |
20140352288 | EXHAUST DEVICE FOR MOTORCYCLE - A collecting exhaust pipe has a contour body and partition wall members. The contour body has a pair of contour members connected with each other. The partition wall members are joined to the contour body and sandwiched between the contour members. A plurality of swelling portions, which are swelled toward the other contour member side, are formed on at least one of the contour members so as to form tubular undulations that extend continuously along a plurality of the primary exhaust pipes, and are shaped so as to join on the downstream side of the contour body on at least one outer surface of the contour body. The partition wall members extend from the upstream portion to the downstream side of the contour body, and are joined to the contour body at the location spaced from the top portions of the swelling portions. | 12-04-2014 |
20150013316 | CYLINDER HEAD MOUNT - A cylinder head mount comprising a base portion for mounting to a cylinder head of an engine; a bracket portion configured to receive and support an engine component; and a body portion interposed between the base portion and the bracket portion. | 01-15-2015 |
20150020509 | METHOD AND SYSTEM FOR MAXIMIZING FUEL EFFICIENCY OF AN INTERNAL COMBUSTION ENGINE - The exemplary embodiments herein provide a system and method for maximizing the fuel efficiency of an internal combustion engine. The system includes an insert for placement in portions of an exhaust system downstream from the header but before the muffler. Inserts can also be placed within the intake system of an internal combustion engine in order to maximize fuel efficiency. Whether placed in the exhaust or the intake, an exemplary embodiment would not affect emissions compliance of the exhaust system and combustion engine. | 01-22-2015 |
20150052882 | EXHAUST GAS SYSTEM FOR AN INTERNAL COMBUSTION ENGINE - An exhaust gas system for an internal combustion engine includes at least one first and one second exhaust gas connection interface for fluidically separated discharge of exhaust gas arising during a combustion process from a combustion chamber of the internal combustion engine, and one at least dual-pipe exhaust gas turbocharger having at least one first and one second supply connection interface for fluidically separated supply of the exhaust gases arising during the combustion process, wherein a first connecting channel is designed for fluidic connection of the first exhaust gas connection interface to the first supply connection interface, and a second connecting channel is designed for fluidic connection of the second exhaust gas connection interface to the second supply connection interface. At least one of the connecting channels is designed to be at least partially closable by a closure element. | 02-26-2015 |
20150059324 | EXHAUST MANIFOLD WITH INSULATION SLEEVE - An exhaust manifold for a combustion engine of a motor vehicle includes a two-shell construction comprised of an outer system and an inner system. A flange is positioned at a side proximal to a cylinder head of the combustion engine for installation to the combustion engine, and an insulation sleeve connects the inner system with the flange and the outer system. The insulation sleeve is sized to extend through an opening of the flange and to project beyond the flange into the cylinder head of the combustion engine. | 03-05-2015 |
20150135691 | POWER UNIT AND STRADDLE-TYPE VEHICLE - A power unit includes: a crankcase | 05-21-2015 |
20150300235 | EXHAUST MANIFOLD - An exhaust manifold for installation onto a cylinder head of an internal combustion engine includes a housing having plural inlet openings and an outlet opening. The housing includes an inner shell and an outer shell in surrounding relationship to the inner shell to define a gap there between. The inner shell is floatingly arranged in the outer shell and rests at a side of the cylinder head upon a guide plate which is formed with the plural inlet openings and includes guide members respectively arranged about a circumference of the inlet openings. The outer shell has a cylinder-head-proximal marginal region formed with an outwardly bent flange that rests upon the guide plate and is joined in gastight manner to the guide plate by a material joint. The flange has an outer side in opposition to the guide plate, with a collar being arranged on the outer side of the flange. | 10-22-2015 |
20150361861 | EXHAUST MANIFOLD WITH TURBO SUPPORT - An exhaust manifold includes an inner assembly that defines an exhaust gas passage and an outer housing assembly that surrounds the inner assembly. The outer housing assembly includes a first housing component configured for attachment to an engine and a second housing component configured for attachment to a turbocharger. The first and second housing components cooperate to surround the inner assembly. At least one fastener secures the first and second housing components together to generate a compressive force that seals and holds the inner assembly in a gas tight manner. | 12-17-2015 |
20160024990 | Mechanical joint insert - A multi-layer joint insert is provided at one or more joints between an engine exhaust manifold and a component mounted by fasteners on the exhaust manifold, as well as between the component and the fastener heads/nuts, to reduce wear and failure at the one or more joints. The joint insert includes a first sheet metal layer having at least one fastener-receiving opening and a second sheet metal layer having at least one fastener-receiving opening, wherein the first and second sheet meal layers are joined by at least one connecting arrangement that permits relative sliding movement between the first and second sheet metal layers in response to thermally-induced movement at the one or more joints, thereby reducing wear and failure at the one or more joints. | 01-28-2016 |
20160032868 | SYSTEMS FOR THERMAL MANAGEMENT OF ENGINE VALVES - Various methods and systems are provided for cooling gas admission valves configured to admit gaseous fuel to an engine. In one embodiment, a system comprises an intake manifold including a gaseous fuel line for supplying gaseous fuel to a plurality of cylinders of an engine configured to combust the gaseous fuel, and at least one gas admission valve mounted to the gaseous fuel passage for regulating admission of the gaseous fuel to the plurality of cylinders. The system further includes a thermal management system configured to direct thermal fluid to the plurality of gas admission valves. | 02-04-2016 |
20160040582 | REMANUFACTURED EXHAUST SYSTEM COMPONENT - An exhaust system component is disclosed. The exhaust system component may have a tubular body that defines a passage. The tubular body may have a joining portion that is configured to fluidly connect the passage to another exhaust system component. The joining portion may have a first layer of cast iron. The joining portion may also have a second layer covering at least a portion of the first layer. The second layer may contain at least iron, chromium, and aluminum. | 02-11-2016 |
20160061089 | EXHAUST DEVICE OF MULTI-CYLINDER ENGINE - An exhaust purification device of a multi-cylinder engine which improves exhaust gas purification performance by substantially uniforming a flow rate of exhaust gas throughout a treatment carrier such as a catalyst and improving dispersibility of the exhaust gas from the multi-cylinder engine to the catalyst and other components in the exhaust purification device wherein two collecting pipes are arranged at substantially symmetric positions across a partition plate part, which has a linear cross sectional shape, and is arranged centrally between the pipes which are each formed into D-shaped cross sectional shapes and comprise a first straight line part, a pair of second straight line parts connected with respective ends of a first straight line part and arranged to be substantially parallel with each other, and a circular arc part that connects ends of a pair of second straight line parts on opposite sides of the first straight line part. | 03-03-2016 |
20160084139 | EXHAUST DEVICE OF MULTI-CYLINDER ENGINE - An exhaust device of a multi-cylinder engine which controls local introduction of exhaust gas to a catalyst device and a variation between cylinders of introduction positions of the exhaust gas to the catalyst device is provided. The exhaust device is arranged so that the cylinders extend in a vehicle width direction at a vehicle front part, and an exhaust line is arranged so as to extend rearward from a rear of the engine, wherein, in sequence from an upstream side of an exhaust gas flow, four independent exhaust pipes corresponding to the cylinders, collecting pipes which collect all independent exhaust pipes, and the catalyst device are provided. The single exhaust pipe includes two bending parts and a downstream part thereof is connected so that the exhaust gas is introduced from a direction that is diagonally lateral to an inlet part of the catalyst device. | 03-24-2016 |
20160090890 | EXHAUST MANIFOLD - An exhaust manifold for an exhaust system of an internal combustion engine is disclosed having a housing, an inlet flange which can be fixed to the cylinder head of the internal combustion engine and has a plurality of inlet openings, and an exhaust outlet. The housing comprises an inner shell and an outer shell, an insulating material being incorporated between the outer shell and the inner shell. A guide plate is provided on the inlet flange side of the inner shell and the outer shell. The guide plate has inflow openings which correspond with the inlet openings of the inlet flange and is joined to the inlet flange. The outer shell engages with its inlet flange-side edge around the guide plate and is joined to the inlet flange and the guide plate. | 03-31-2016 |
20160115860 | SPARK-IGNITION ENGINE - There is provided a spark-ignition engine with which a gas supply device and an intake system can be integrated with the engine. In the spark-ignition engine including: a throttle body; a gas mixer; a gas regulator; and a gas relay pipe, a collector portion of an intake manifold is supported to extend in a front-back direction on one side of a cylinder head cover, the throttle body is mounted to a back portion of the collector portion of the intake manifold, the gas mixer is mounted to a back portion of the throttle body above a flywheel, the gas regulator is disposed on a side of an exhaust manifold above the flywheel and mounted to a cylinder head, and the gas relay pipe is supported to extend sideways between the gas regulator and the gas mixer behind the cylinder head cover. | 04-28-2016 |
20160123211 | EXHAUST DEVICE FOR COMBUSTION ENGINE - An exhaust device for a combustion engine includes a collecting pipe to which downstream end portions of two exhaust pipes are connected. The downstream end portions of the exhaust pipes are aligned in a lateral direction perpendicular to an axial direction thereof. The downstream end portions of the exhaust pipes have insertion sections that are inserted into an upstream end portion of the collecting pipe. The upstream end portion of the collecting pipe has a cover section that covers the entirety of circumferences of the insertion sections. Outer circumferential surfaces of the insertion sections of the exhaust pipes and an inner circumferential surface of the cover section of the collecting pipe are joined over the entirety of circumferences thereof at a collecting pipe joining region. The collecting pipe joining region has a displacement portion having its position shifted in the axial direction C toward the lateral direction W. | 05-05-2016 |
20160146086 | EXHAUST SYSTEM STRUCTURE FOR IMPROVING NOISE PROBLEM - An exhaust system structure includes an exhaust manifold discharging exhaust gas through at least one runner towards an exhaust pipe. A front pipe is connected to a front end of the exhaust pipe. A collector connects the at least one runner and the front pipe. The collector comprises at least one inlet communicating with an exit of the at least one runner. An outlet communicates with the front pipe such that the outlet discharges the exhaust gas into the front pipe through the at least one inlet. An extended portion has a radius greater than or equal to that of the exit of the at least one runner. | 05-26-2016 |
20160146150 | EXHAUST MANIFOLD-INTEGRATED CYLINDER HEAD WITH WATER JACKET - An exhaust manifold-integrated cylinder head with a water jacket includes intake ports through which outside air is supplied and exhaust ports through which exhaust gas is discharged. Intake valve holes and exhaust valve holes open the intake ports and the exhaust ports. Spark plug holes are formed on a top side of the cylinder head. A head water jacket is formed within the cylinder head to allow a coolant to flow from one end to another end. The head water jacket includes exhaust port bridge coolant passages formed between the exhaust ports. Lower coolant guides protrude inside the cylinder head so that the coolant flows upward from a bottom side of the cylinder head through the exhaust port bridge coolant passages. | 05-26-2016 |
20160153312 | HEAT RESISTANT CAST STEEL HAVING SUPERIOR HIGH TEMPERATURE STRENGTH AND OXIDATION RESISTANCE | 06-02-2016 |
20160153340 | APPARATUS FOR COMPENSATING FOR THERMAL EXPANSION OCCURRING FROM EXHAUST MANIFOLD | 06-02-2016 |
20160160734 | GAS LEAKAGE PREVENTION COVER AND EXHAUST MANIFOLD HAVING THE SAME - A gas leakage prevention cover includes an inlet having a cross section area corresponding to a cross section area of a duct into which the cover is inserted, an outlet having a smaller cross section area than the cross section area of the inlet, and a step formed at a predetermined angle in a direction toward the outlet on a predetermined position of the cover. The cover has a ring shape and is configured to enable fluid to flow through an interior space of the cover from the inlet to the outlet. | 06-09-2016 |
20160177805 | EXHAUST APPARATUS OF OUTBOARD MOTOR | 06-23-2016 |
20220136427 | EXHAUST CONDUIT WITH A TEXTURED SURFACE - An exhaust system is provided for an automotive engine of vehicles with exhaust conduits having a textured surface. The system comprises a plurality of cylinder exhaust ports, and an exhaust manifold including a plurality of exhaust runners fluidly coupled to the plurality of cylinder exhaust ports, where at least one exhaust runner of the plurality of exhaust runners includes a plurality of steps or dimples protruding outward from the exhaust runner. In one example, the system promotes an effective mixing of oxygen and hydrocarbons in the exhaust stream to reduce engine emissions. | 05-05-2022 |