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Honeycomb filter for clarifying exhaust gas
ActiveUS20050175514A1Increased durabilityCombination devicesPhysical/chemical process catalystsHoneycombFlexural strength
A honeycomb filter for purifying exhaust gases that is free from occurrence of cracks and coming-off of plugs and is superior in durability upon its use. The honeycomb filter includes a columnar body made of porous ceramics, which has a number of through holes placed in parallel with one another in the length direction with wall portion interposed therebetween, designed so that predetermined of the through holes are filled with plugs at one end of the columnar body, while the through holes not filled with the plugs at the one end are filled with plugs at the other end of the columnar body, and part of or the entire wall portion functions as a plug for collecting particles. A bending strength Fα (MPa) of the honeycomb filter and a length L (mm) of the plug in the length direction of the through hole satisfy the relationship of Fα×L≧30.
Owner:IBIDEN CO LTD
Exhaust tip
InactiveUS7007720B1Severe design restrictionOverall design flexibilityThermal insulationSilencing apparatusEngineeringThermal effect
An exhaust tip for attachment to a tailpipe that includes a thermoset heat shield at least partially surrounding and fastened to the tailpipe, and a thermoplastic decorative cover at least partially surrounding and fastened to the thermoset heat shield. The thermoset heat shield insulates the thermoplastic decorative cover from thermal effects of the tailpipe and spaces the thermoplastic decorative cover a predetermined distance away from the tailpipe.
Owner:LACKS INDUSTRIES INC
Device for the aftertreatment of exhaust gases of internal combustion engines
ActiveUS20110113759A1Simple and reliable functionSmall installation spaceInternal combustion piston enginesSilencing apparatusDecompositionEnvironmental engineering
A device for the aftertreatment of exhaust gases in an exhaust gas system of internal combustion engines, having at least one reductant decomposition catalyst. Arranged in the exhaust gas flow, and a metering device arranged upstream of the latter in an exhaust gas line for supplying reductant. Preferably at least one other catalyst device is provided downstream of the reductant decomposition catalyst. An inlet section for the exhaust gas having at least one flow deflection area is arranged upstream of the reductant decomposition catalyst and constructed for the exhaust gas to be fed into a housing radially outside an inlet pipe adjoining the reductant decomposition catalyst that encloses the inlet pipe, and is guided in counterflow through a front inlet opening of the inlet pipe to the reductant decomposition catalyst. The reductant is fed into the flow deflection area associated with the inlet opening.
Owner:MAN NUTZFAHRZEUGE AG
Flow-through mufflers with optional thermo-electric, sound cancellation, and tuning capabilities
InactiveUS20070045044A1Reduce engine fuel consumptionInternal combustion piston enginesThermoelectric device with peltier/seeback effectHeat conductingAcoustic wave
Owner:SULLIVAN JOHN TIMOTHY
Exhaust sound and emission control systems
InactiveUS6935461B2Enhance emission reductionReduce componentsSilencing apparatusThermometers using physical/chemical changesControl systemDouble wall
The exhaust sound and emission control system is a system for reducing sound and noxious emissions from an automotive exhaust. The system may have an exhaust resonator having one or more catalytic converter elements in combination therewith in a single device. Alternatively, the system may have multiple angularly disposed chambers therein, with a series of V-shaped baffles or guides in one of the chambers, thereby combining resonator and muffler functions in a single device. In another alternative, the system has a series of longitudinal tubes therein, in combination with a series of V-shaped guides or vanes, combining catalytic converter, muffler, and resonator functions in a single device. The various elements of the different embodiments, e.g. catalytic converter element(s), double wall shell, perforated tubes and multiple flow paths, interconnecting crossover tubes, etc., may be combined with one another as practicable.
Owner:MAROCCO GREGORY M
Exhaust silencer and communicating pipe thereof
InactiveUS6241044B1Reduce total pressure lossSufficiently exhaust noiseSilencing apparatusMachines/enginesEngineeringExhaust gas
More than two damping chambers 2A to 2C), a communicating pipe (6) for intercommunicating the damping chambers (2A, 2B) and another communicating pipe (7) for intercommunicating the damping chambers (2B, 2C) are provided. Both ends of the communicating pipes (6, 7) are closed by an end plate (9) and the respective damping chambers (2A to 2C) and inside of the communicating pipes (6, 7) are intercommunicated by communicating holes (8A) on an outer circumference of the communicating pipes (6, 7). Exhaust gas flows from the damping chamber (2A) to communicating holes (8A1), inside of the communicating pipe (6), communicating holes (8A2), the damping chamber (2B), communicating holes (8A3), inside of the communicating pipe (7), communicating holes (8A4), and the damping chamber (2C), thus damping exhaust noise by repeated effective contraction and expansion.
Owner:KOMATSU LTD
Exhaust treatment packaging apparatus, system, and method
An exhaust treatment packaging apparatus, system, and method includes an elongate exhaust gas passage comprising an inlet for the entrance of flowing exhaust gases and an outlet for the exit of the gases. A catalytic device comprising an inlet and an outlet completely or partially overlaps the passage to reduce the length required for the system. The passage outlet is disposed adjacent the catalytic device inlet, and a flow connector connects the passage outlet to the catalytic device inlet. A particulate filter or other treatment device may be substituted for or added to the catalytic device. A doser disposed upstream of the passage doses an additive which evaporates, mixes, or otherwise undergoes change in the passage before reaching the catalytic device.
Owner:CUMMINS FILTRATION IP INC
Apparatus for damping acoustic vibrations in a combustor
An apparatus for damping acoustic vibrations in a combustor as well as a corresponding combustor arrangement with the apparatus. The apparatus includes a Helmholtz resonator (4) that can be connected via a connecting channel (2) with a combustor (1). The Helmholtz resonator (4) contains a hollow body (6) the volume of which can be changed by adding or draining a fluid via a supply line (5), or is located adjacent to such a hollow body in such a way that the resonance volume (3) of the Helmholtz resonator (4) is changed when the volume of the hollow body (6) is changed. This apparatus makes it possible to adjust the resonance frequency of a Helmholtz resonator arranged inside a pressure container in accordance with the respective current operating point of the combustor to be damped, without having to pass movable components through the pressure container.
Owner:ANSALDO ENERGIA IP UK LTD
Engine exhaust catalysts containing palladium-gold
InactiveUS8258070B2Improved CO and HC reduction performanceImprove low temperature performanceMolecular sieve catalystsInternal combustion piston enginesMetal catalystPalladium
An emission control catalyst that exhibits improved CO and HC reduction performance includes supported precious group metal catalysts that are coated onto different layers of the substrate for the emission control catalyst. Zeolites of one or more types are added to the emission control catalyst as a hydrocarbon absorbing component to boost the low temperature performance of the emission control catalyst. Y zeolite is used by itself or mixed with other zeolites to enhance hydrocarbon storage at low temperatures.
Owner:WGCH TECH LIMITED WORLD GOLD COUNCIL
Catalyst carrier holding material and catalytic converter
ActiveUS7261864B2Improve stress resistanceExcellent wind erosion resistanceCombination devicesPhysical/chemical process catalystsFiberHeat resistance
To provide a catalyst carrier holding material which is particularly useful for catalytic converters, by exhibiting heat resistance and high compression resistance in high temperature ranges, as well as excellent wind erosion resistance. The catalyst carrier holding material comprises inorganic fibers comprising alumina and silica, and the mullite ratio of the inorganic fibers is in the range of greater than 30% and less than 75%, and preferably in the range of 35% to 70%.
Owner:3M INNOVATIVE PROPERTIES CO
HIGH-Cr HIGH-Ni, HEAT-RESISTANT, AUSTENITIC CAST STEEL AND EXHAUST EQUIPMENT MEMBERS FORMED THEREBY
Owner:HITACHI METALS LTD
High-cr high-ni austenitic heat-resistant cast steel and exhaust system component produced from same
ActiveCN1942598AHigh temperature yield pointImprove oxidation resistanceSilencing apparatusMachines/enginesThermal fatigueImpurity
Disclosed is a high-Cr high-Ni austenitic heat-resistant cast steel having a composition mainly containing C, Si, Mn, Cr, Ni, W and / or Mo, and Nb, and further containing, in weight%, 0.01-0.5% of N, not more than 0.23% of Al, not more than 0.07% of O and the balance of Fe and unavoidable impurities. Since this high-Cr high-Ni austenitic heat-resistant cast steel is excellent in high-temperature resistance, oxidation resistance and thermal fatigue life, it is preferably used for exhaust system components.
Owner:PROTERIAL LTD
Insulated exhaust manifold
An exhaust manifold is provided having substantially ceramic inner and insulation layers. The manifold preferably has a metal outer structural layer to impart strength to the manifold. The ceramic layers are made of ceramic fibers with the interstitial spaces between the fibers being filled with ceramic filler material. The preferred ceramic fibers are aluminosilicate fibers. The preferred ceramic filler material is alumina, silica, glass-ceramic or other metal oxide. A method of making an exhaust manifold having a substantially ceramic inner and insulation layer is also provided.
Owner:INTPROP HLDG
Channeling fluidic waveguide surfaces and tubes
InactiveUS20150337878A1Reduce fluid frictionReduce surfaceVehicle seatsVehicle body stabilisationJet engineEngineering
Waveguide or flow guide surfaces can improve the efficiency of fluid flow through tubes or over surfaces. When incorporated in a tube, the waveguides improve flow and function as sound absorbers making them useful in engine mufflers, firearm silencer / suppressors and jet engine exhaust attenuators. On surfaces, the waveguides can reduce fluid drag and find use on projectiles (e.g., bullets), airfoils for aircraft, and land borne vehicles. The waveguide array in either a tubular chamber or on a surface comprises a plurality of successive wave-like undulations inclined generally in the direction of flow and when employed in tubes extending inwardly to permit an unobstructed path for the fluid gas from entry to exit. The waves define annular wave cavities between their successive inwardly extending edges and the wall of the chamber with each cavity having a cavity mouth open to the unobstructed path. The waveguides are sized and spaced so that gas vortices are created within the cavities when gas flow occurs which vortices create a fluid boundary layer that assists the gas flow.
Owner:PARAFLUIDICS
Exhaust emission purifying apparatus
ActiveUS20080127635A1Easy to determineReduce in quantityCombination devicesInternal combustion piston enginesExhaust fumesEnvironmental engineering
An exhaust emission purifying apparatus of the present invention has a casing that includes therein a plurality of layered passages which is formed by partitioning an inside of the casing to thereby allow an exhaust passage from an exhaust emission inlet to an exhaust emission outlet to be folded in its direction once or more, a reduction catalyst that reductively purifies NOx by using a reducing agent, a nozzle that injects the reducing agent or a precursor thereof to an exhaust upstream side of the reduction catalyst, and a filter (DPF) that collects PM suspended in an exhaust emission. The reduction catalyst and the filter are disposed in the different layered passages. Consequently, a more compact exhaust emission purifying apparatus having both NOx removal function and PM collection function can be provided.
Owner:VOLVO LASTVAGNAR AB
Austenitic stainless steels including molybdenum
InactiveUS20040156737A1Minimize component weightLow costSilencing apparatusMachines/enginesNiobiumManganese
An austenitic stainless steel comprises, by weight, 9 to 23% chromium, 30 to 35% nickel, 1 to 6% molybdenum, 0 to 0.03% titanium, 0.15% to 0.6% aluminum, up to 0.1% carbon, 1 to 1.5% manganese, 0 to less than 0.8% silicon, 0.25 to 0.6% niobium and iron. Embodiments of austenitic stainless steels according to the present invention exhibit enhanced resistance to corrosion. Thus, the stainless steels of the present invention may find broad application as, for example, automotive components and, more particularly, as automotive exhaust system flexible connectors and other components, as well as in other applications in which corrosion resistance is desired.
Owner:ATI PROPERTIES
Filter control apparatus
InactiveUS7357822B2Estimated more accuratelyAccurate estimateCombination devicesElectrical controlParticulatesDifferential pressure
In order to calculate an estimation of the quantity of accumulated particulates in a filter (32), a first estimation calculation unit (100) that outputs first estimation data (XA) calculated from the filter before and after differential pressure, and a second estimation calculation unit (110) that outputs second estimation data (XB) based on the engine operation status. Of the first and second estimation data (XA, XB), the estimation data having the higher dependability, as viewed from the engine speed at that time, is selected, whether or not to regenerate the filter is determined and with the differential between the first and second estimation (XA, XB) also taken into consideration, when the differential is larger than a prescribed value, even if the engine speed is high, the first estimation data XA is not selected since there is a risk that the dependability of the estimation value is low due to cracking of the accumulated particulates.
Owner:DIESEL KIKI CO LTD
Muffler having a baffle with angled plates
ActiveUS7104359B1Quiet performanceReduce assemblySilencing apparatusMachines/enginesEngineeringMuffler
A muffler having a baffle with angled plates includes a one piece baffle, a container and two end caps. The one piece baffle has at least three different configurations. The baffle preferably has two, three or four plates, namely “V”, “Z” or “W” shapes. Each one piece baffle configuration includes openings to allow exhaust flow therethrough. Each one piece baffle configuration is retained in the container. The container is terminated with end caps on each end thereof. At least one inlet tube and at least one outlet tube are attached to a perimeter of the container. In a second embodiment, the container and baffle are formed from a single piece of material. In a third and fourth embodiment, the inlet and outlet tubes are inserted through plates of the baffle. In a fifth embodiment, balanced tubes and chambers are added. In a sixth embodiment, a corrugated baffle is used.
Owner:COMPX INTERNATIONAL
Construction machine
InactiveUS20130319787A1Stable absorptionImprove performanceSilencing apparatusSoil-shifting machines/dredgersEngineeringExhaust pipe
On an upper revolving structure, an engine having an exhaust port is mounted. In the midway portion of the exhaust pipe connecting the exhaust port of the engine and an exhaust gas post-treatment device, a first bellows pipe and a second bellows pipe are arranged through a connecting pipe having an L-shaped bending portion. In this case, the first bellows pipe and the second bellows pipe are arranged so as to have a positional relationship in which axis lines thereof (X1-X1, Z1-Z1) cross each other. That is, the first bellows pipe is arranged in a horizontal direction so that its axis line (X1-X1) extends in the left-right direction of the upper revolving structure. The second bellows pipe is arranged so that its axis line (Z1-Z1) matches the vertical direction of the upper revolving structure.
Owner:HITACHI CONSTR MASCH CO LTD
Black Exhaust Purification Apparatus For Diesel Engine
InactiveUS20100107613A1Achieve effectCompact lengthGas treatmentInternal combustion piston enginesParticulatesExhaust fumes
It's an object of the present invention to provide a black smoke exhaust purification apparatus capable of equalizing temperature of a particulate filter and facilitating maintenance thereof. The black smoke exhaust purification apparatus (20) is arranged in series therein with an oxidation catalyst (4) and a particulate filter (1), wherein an inlet for exhaust gas (10) is disposed between the oxidation catalyst (4) and the particulate filter (1), and wherein an exhaust gas passage is extended from the inlet portion through the oxidation catalyst (4) so as to be connected to an upstream space (2a) of the oxidation catalyst (4).
Owner:YANMAR CO LTD
Filter made of porous ceramic sintered body
The invention is directed to a filter made of a porous ceramics sintered body has a honeycomb structure having a large number of through channels partitioned by partition walls and passing through along an axial direction. When a ratio of a pore volume having a diameter of 30 mum or more to a total pore volume, measured by a method of mercury penetration, of the filter is P1(%) and a thickness of said partition wall is T (mum), these satisfy the relationship defined by the following formula: P1x10<=T. In case of this filter, one may produce it relatively easily on a large scale without adjustment requiring the change of the properties of material for a filter, and the filter can flexibly cope with various uses.
Owner:NGK INSULATORS LTD
Exhaust muffler
ActiveUS20100270103A1Easy to adjustMaximizes performance characteristicSilencing apparatusMachines/enginesCombustionEngineering
A muffler for reducing the sounds of combustion gases exhausted from an internal combustion engine including an elongated fluid passage extending between an inlet and an outlet such that the outlet is in fluid communication with the inlet. Further, the inlet being connectable with the gases exhausted from the engine and the outlet being connectable with the atmosphere. The muffler further including an outer tank surrounding the passage and a tubular connector having a first end in fluid connection with the passage and a second end in fluid connection with the tank such that the connector produces a fluid connection between the passage and the tank. The connectors having a perforated resistance plate to restrict the fluid flow between said passage and said sound chamber thereby reducing the severity of the sound or fluid pulses entering and exiting said sound chamber, perforations in said perforated plate forming an open portion of said plate and said open portion being less than 60 percent.
Owner:TMG PERFORMANCE PRODS
Mufflers with polymeric bodies and process for manufacturing same
Mufflers having polymeric bodies that are protected from being overheated from the exhaust pipe by having an air gap between the exhaust pipe and the polymeric body are disclosed. Also disclosed is a process for making muffler systems wherein the muffler polymeric bodies have a cross section that is constant over the length of the muffler polymeric body. The muffler systems are inexpensive to make and install.
Owner:EI DU PONT DE NEMOURS & CO
Technique to fill silencers
InactiveUS20050001012A1Precise positioningHigh tensile strengthCooking-vessel materialsSoldering apparatusFiberYarn
A method for forming odd-shaped mufflers is achieved by first introducing an unfilled muffler insert having a desired number of pipes and partitions within a two-piece shaped tool. Fibrous material is introduced within desired compartments formed between the shaped tool and unfilled insert to form a filled insert. The shaped tool and filled insert are then placed on a winding device. A yarn thread is then wound and secured around the fibrous material within a gap created between the two pieces of the shaped tool. The winding device and shaped tool are then removed from the filled and wound muffler insert. The wound and filled muffler insert may then either be pressed into a previously formed muffler shell, or alternatively, the muffler shell may be formed around the wound and filled muffler insert to form the muffler.
Owner:OWENS CORNING COMPOSITES SPRL BELGIUM
Fluid supply connection for reductant delivery unit for selective catalytic reduction systems
InactiveUS20090107126A1Liquid surface applicatorsInternal combustion piston enginesAfter treatmentEngineering
A reductant delivery unit (16) is provided unit for selective catalytic reduction (SCR) after-treatment for vehicles. The unit includes a solenoid fluid injector (18) associated with an exhaust gas flow path (13). The injector has a fluid inlet (28) and a fluid outlet (30) with the fluid inlet receiving a source of urea solution and the fluid outlet communicating directly with the exhaust flow path so as to control injection of urea solution into the exhaust gas flow path. Supply structure (32) defines the fluid inlet and includes a cup (37) coupled to a body (18) of the injector and a supply tube (29) integral with the cup to define a single member. The supply tube is coupled with the source (27) of urea solution to deliver urea solution to the fluid inlet. The supply tube is heated by a heat source (33) so that an entire volume of the urea solution delivered to the fluid inlet is heated.
Owner:CONTINENTAL AUTOMOTIVE SYST INC
Exhaust gas aftertreatment device with injection section
ActiveUS20160131007A1Good effectCombination devicesInternal combustion piston enginesEngineeringMaterial Perforation
An exhaust system injection section (10) includes an exhaust gas flow channel (19), a laterally arranged injector connection (21), with a fluid introducing injector (22) and an injection chamber (24) formed in the channel, which is delimited by a perforated first separating wall (25), arranged in the channel upstream of the injector connection, and a perforated second separating wall (26) arranged in the channel downstream of the injector connection. To provides intensive mixing of the injected fluid with the exhaust gas flow a perforation (29) of the first separating wall (25) is configured so that exhaust gas largely flows eccentrically through the first separating wall (25) with respect to a longitudinal center axis (23) of the channel and a perforation (31) of the second separating wall (26) is configured so that exhaust gas largely flows concentrically through the second separating wall (26) with respect to the longitudinal center axis (23).
Owner:PUREM GMBH
Exhauster for Motorcycle and Motorcycle Including Exhauster
ActiveUS20080110155A1Reduce component countLow costCombustion enginesSilencing apparatusExpansion chamber
Owner:YAMAHA MOTOR CO LTD
Flow-through mufflers with optional thermo-electric, sound cancellation, and tuning capabilities
InactiveUS7610993B2Reduce consumptionReduce engine loadInternal combustion piston enginesThermoelectric device with peltier/seeback effectHeat conductingEngineering
A flow-through muffler includes a plurality of heat conducting walls, baffles, or partitions that together define a plurality of passages arranged to form acoustic waveguides, attenuators, and / or cancellation chambers, the walls, baffles, or partitions increasing a surface area exposed to the exhaust gases to facilitate extraction of heat while attenuating or canceling the resulting sound pressure waves. The muffler may have a cooling arrangement mounted thereon, and thermoelectric generator elements or other heat-powered device, such as a reformer, connected across the heat differential between the cooling arrangement and an exterior surface of the muffler housing that is in thermal contact with the heat conducting walls, bafflers, or partitions. In addition, the muffler may be made tuneable by providing a device for varying a length of one of the passages relative to another passage, and by including a sound cancellation chamber at an intersection of the passages. In addition, the internal surfaces of the muffler may be coated with a catalyst to provide a combination muffler and catalytic converter.
Owner:SULLIVAN JOHN TIMOTHY
Exhaust sound and emission control systems
InactiveUS7281606B2Reduce componentsAccelerate emissionsSilencing apparatusMachines/enginesControl systemDouble wall
Owner:MAROCCO GREGORY M
Apparatus and method for cooling an exhaust gas
ActiveUS20100000205A1Reduce the temperatureInternal combustion piston enginesSilencing apparatusGuide tubeExhaust gas
An exhaust gas cooling apparatus and method for cooling an exhaust gas is provided. The exhaust cooling apparatus has a first fluid conduit and a variable nozzle extending from the first fluid conduit. The variable nozzle being disposed in an inlet end of a second fluid conduit, wherein the variable nozzle has at least two dissimilar materials adjacent to each other and a fluid inlet opening is located between an outer periphery of the variable nozzle and an inner surface of the inlet end of the second fluid conduit. The at least two dissimilar materials vary the size of an opening of the variable nozzle by moving toward or away from a center line of the first fluid conduit in response to a temperature of an exhaust gas flowing through the first fluid conduit.
Owner:GM GLOBAL TECH OPERATIONS LLC
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