Abstract: Systems and methods are provided for operating a particulate matter retaining system, comprising at least a first and a second filter, coupled to an engine intake. One example method comprises, during a first condition, operating in a first mode with the first filter storing particulate matter and the second filter releasing stored particulate matter, with exhaust gas flowing in a first direction through the filters. The method further comprises, operating in a second mode with the first filter releasing stored particulate matter and the second filter storing particulate matter, the exhaust gas flowing in a second, opposite, direction through the filters. The method further comprises, during a second condition, operating in a third mode with both the first and the second filter storing particulate matter. During all modes, at least some tailpipe gas is drawn from between the first and second filter for expulsion to the atmosphere.

Abstract: An apparatus for removing soot from diesel engine exhaust streams at temperatures below 150° C. is provided. Although the use of particulate filters for removing carbonaceous soot from such exhaust streams is known, such systems are either active or operate under high temperatures, i.e. in excess of 300° C. The claimed apparatus includes a flow through support device composed of ceramic, such as cordierite or silicon carbide, or a primarily nonferrous metal or stainless steel and coated with an oxide formation comprising hematite and bixbyite in a ratio from 1:1 to 9:1. The claimed apparatus can also include a diesel particulate filter coated with a coating comprising tin, aluminum and zirconium oxides prepared by a co-precipitation process and thereafter coated with platinum or other precious metal.

Abstract: An exhaust system for use with a diesel engine includes a diesel particulate filter configured to capture particulate matter exhausted from the diesel engine, a first sensor operable to detect a particulate matter accumulation level within the diesel particulate filter, and a second sensor operable to detect an ambient temperature of an environment surrounding the diesel particulate filter. The exhaust system also includes a control module electrically coupled to the first sensor, the second sensor, and the diesel particulate filter. The control module is operable to adjust a first regeneration threshold based on the detected ambient temperature. The control module is also operable to initiate regeneration of the diesel particulate filter when the detected particulate matter accumulation level reaches the first regeneration threshold.

Abstract: An object of the present invention is to provide a honeycomb structural body (filter) which has a low pressure loss upon collecting particulates, makes it possible to deposit a great amount of particulates and ashes, and is less likely to produce cracks.

Abstract: A device for the treatment of an exhaust gas flow includes at least one inflow channel with a front region and a rear region and at least one return flow channel. A first coating is provided in the rear region of the at least one inflow channel. The coating assists an exothermal reaction of the exhaust gas flow. A device is formed in the front region of the inflow channel for the transfer of heat from a return flow channel. A method for operating a device for the treatment of an exhaust gas flow, a vehicle having the device and an operating method for an exhaust gas system of a vehicle having the device, are also provided.

Abstract: An apparatus for cooling overheated gas generated from a diesel particulate filter which is connected between a diesel engine and an exhaust pipe of the diesel engine is disclosed. The apparatus includes a tail pipe for discharging outwardly the overheated gas discharged from the diesel particulate filter, a cooling fan, provided at one side of an engine room, for generating an air stream by sucking ambient air, and a diffuser enclosing an outer circumference of the tail pipe in such a way a space is formed between the diffuser and the tail pipe to prevent the diffuser from directly contacting the tail pipe. The engine room is provided with a through-hole penetrating one side of the engine room, and the tail pipe has one end connected to the diesel particulate filter, and the other end extended outwardly from the engine room through the through-hole.

Abstract: An exhaust system for a power system contained in an engine compartment. The exhaust system includes a mount for two or more exhaust treatment devices and an enclosure surrounding the two or more exhaust treatment devices. The enclosure defines a space with a higher temperature than a space defined by the engine compartment during steady state operation of the power system. At least one electronic or fluid device is coupled to the enclosure or mount and located on an exterior of the enclosure.

Abstract: An exhaust treatment system is provided. The system may include a particulate trap configured to remove one or more types of particulate matter from an exhaust flow of an engine. The system may also include a catalyst configured to chemically alter at least one component of the exhaust flow. Further, the system may include an exhaust conduit configured to direct the exhaust flow from the engine to the particulate trap and the catalyst. In addition, the exhaust treatment system may include a heating system configured to maintain the temperature of the catalyst above a first predetermined temperature. The heating system may also be configured to periodically raise the temperature of the particulate trap above a higher, second predetermined temperature to thereby effectuate a regeneration of the particulate trap by oxidizing particulate matter accumulated in the particulate trap.

Abstract: The present invention relates to new crystalline molecular sieve SSZ-74 prepared using a hexamethylene-1,6-bis-(N-methyl-N-pyrrolidinium) dication as a structure-directing agent, and its use in treating engine exhaust.

Abstract: A device for reducing particles of an exhaust gas includes at least one carrier structure having a predefinable volume and a plurality of channels which can be traversed by a flow. The channels at least partially have measures for deflecting the exhaust gas within the channels. The at least one carrier structure at least partially has a first coating including a washcoat. A quantity of the washcoat in a range of from 10 to 60 grams is provided per liter of the volume, provided with the first coating, of the carrier structure. An exhaust gas purification system and a vehicle having the device or the system, are also provided.

Abstract: 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.

Abstract: A system for providing heat to the dump body of a dump truck is disclosed. The disclosed system is suitable for use with truck equipped with a diesel particulate filter. When enabled, the system controls the exit path of exhaust gas such that it is routed to the dump body during normal operating conditions. In one embodiment, when the diesel particulate filter enters a regeneration cycle, high heat is produced. The system then routes the exhaust gas as to bypass the dump body to avoid heat damage from the higher temperature exhaust gas.

Abstract: A method of adjusting a ratio of NO to NO2 in a flow of exhaust gas is disclosed. The method includes directing a first portion of the exhaust flow through at least one first channel, wherein the at least one first channel is a wall-flow channel, and directing a second portion of the exhaust flow through at least one second channel, wherein the at least one second channel is an open flow-through channel. The method further includes converting NO into NO2 at a first rate in the first portion of the exhaust flow as the first portion of the exhaust flow passes through the at least one first channel and converting NO into NO2 at a second rate in the second portion of the exhaust flow as the second portion of the exhaust flow passes through the at least one second channel, the second rate being slower than the first rate.

Abstract: An exhaust-gas after-treatment device having an oxygen storage capacitor substance which releases oxygen when the exhaust-gas is rich in air-fuel ratio and stores oxygen and heats up by itself when the exhaust-gas is lean in air-fuel ratio. The air-fuel ratio for the exhaust-gas flowing into the device is regulated so as to alternately come into the rich condition and the lean condition when the temperature of the exhaust-gas is not higher than a given temperature and when the device is not in a regeneration condition. Thus, when the device having a deNOx catalyst and a diesel particulate filter is not in a regeneration condition, the temperature of the device is raised by utilizing the self-heating function of the oxygen storage capacitor substance during oxygen absorption. As a result, the purification rate for NOx and particulate matter at the time when the temperature of the exhaust-gas is low is improved.

Abstract: An exhaust gas filter system in which an asymmetrical channel, in which the diameter of an inlet being opened is larger than that of an outlet disposed and opened at a rear end surface, is formed, may include a first coating layer that is formed at an inner surface of a front portion of the channel by coating a first wash coat, and a second coating layer that is formed at an inner surface of a rear portion of the channel by coating a second wash coat, wherein inner cross section of the front portion is wider than inner cross section of the rear portion.

Abstract: A honeycomb structured body of the present invention is a honeycomb structured body in which a plurality of porous ceramic members are combined with one another through an adhesive layer, each of the porous ceramic members having a plurality of cells which are allowed to penetrate in a longitudinal direction with a wall portion therebetween and either one end of which is sealed, with a catalyst supporting layer being adhered to the wall portion, wherein, supposing that the rate of the pore volume of pores having a pore diameter of 10 ?m or less to the entire pore volume of the porous ceramic member is X1 (%), the porosity is Y1 (%) and the weight of the catalyst supporting layer is Z1 (g/l), these X1, Y1 and Z1 are allowed to satisfy the following expressions (1) and (2): X1?20?Z1/10??(1), and Y1?35+7Z1/40??(2) (where about 20?Z1?about 150).

Abstract: An emission reduction device which may be removably affixed to a diesel engine's exhaust system. The device comprises an outer casing which may be divided into a lower portion and an upper portion, the lower portion of which is removably attachable to the exhaust system of a diesel engine; a carcass for holding a bobbin wherein the carcass is attached to the lower portion of the outer casing at the point where the exhaust enters the outer casing and the carcass has a beveled opening in a diagonal line in its proximal part and a bobbin positioned in its distal part; one or more fibrous blanket cylinders; and a guide for arranging and securing the one or more fibrous blanket cylinders within the outer casing. The fibrous blanket cylinders may be wrapped in a wire mesh. In an alternative embodiment, a second fibrous blanket formed into a cone with the larger diameter of the cone positioned proximally may be removably inserted in the carcass.

Abstract: An exhaust-gas cooler for an internal combustion engine has a plurality of flow channels which conduct exhaust gas. The flow channels are arranged within a housing (1) and are in thermal exchange with a fluid for cooling the exhaust gas. At least one filter member (3) for filtering particles from the exhaust-gas flow is integrated structurally into the exhaust-gas cooler.

Abstract: Disclosed herein is a filter device for reducing automobile exhaust fume. The filter device includes a case, a front flange mounted inside the case, a rear flange mounted inside the case, and a filter member mounted between the front and rear flanged. The case includes an inlet port, a porous tube and an exhaust port. The filter member includes a laminated-type or rolled-up type metallic foam filter mounted between the front and rear flanges, and a jacket wrapped around the metallic foam filter. The exhaust gas that flows inside the porous tube passes through the metallic foam filter. The jacket is formed in a network form to maintain the shape of the metallic foam filter and provide durability thereto. The jacket is formed with a rectangular vent hole. The jacket holds the metallic foam filter such that the shape, construction and position of the metallic foam filter can be maintained.

Abstract: A power pack has an electrically controlled internal combustion engine which is provided with a turbo charger which is immersed in liquid coolant to reduce the risk of a spark therefrom igniting combustible gas in the ambient atmosphere.

Abstract: A combustion engine comprising an exhaust system containing a particulate filter (10, 52) for trapping particulate matter in engine exhaust passing through the exhaust system. A particulate trapping medium (18) inside a casing is selectively operable to a relatively lesser porosity for trapping particulate matter in the exhaust and to a relatively greater porosity for facilitating removal of trapped particulate matter during cleaning.

Abstract: An exhaust gas control system (1) comprised with a continuous regeneration-type DPF (13), an exhaust throttle valve (16) and a DPF control means (30C), wherein the regeneration control is suspended, the multi injection control is performed, and the exhaust throttle valve is closed, when detecting a-stop condition of the vehicle during the regeneration control of the continuous regeneration-type diesel particulate filter device (13) by the regeneration means. Thereby, concerning the regeneration of the continuous regeneration-type DPF device (13), the DPF can be regenerated securely by burning PM efficiently even in a traveling pattern of frequent waiting for the traffic lights to change in urban areas.

Abstract: An exhaust gas purifying apparatus for an internal combustion engine including a first filter and a second filter. The first filter traps particulates in exhaust gases from said engine. The second filter is provided for failure detection and disposed downstream of the first filter. The trapping state of the second filter is detected and a filtering capability of the first filter is diagnosed based on the detect trapping state of the first filter.

Abstract: A system for venting crankcase emissions from an engine is disclosed generally comprising a crankcase emissions conduit that communicates blow-by gases from the crankcase into the exhaust flow of an exhaust conduit, which includes a venturi, via an inlet located upstream of the minimum inner diameter of the venturi in order to pump the crankcase emissions therethrough. In certain embodiments, the gases are then directed to a filter assembly, which may include a particulate filter and may include a catalyst for facilitating redox of harmful substances to create harmless compounds prior to venting them or recirculating them in the system. In certain advantageous embodiments, an auxiliary oxygen supply is provided to facilitate these burning processes.

Abstract: A particulate filter for an exhaust system configured to receive an exhaust flow is disclosed. The filter includes a wall-flow filtration element having a first regeneration zone and a second regeneration zone, the first zone being downstream of the second zone, and a heat source disposed at the first regeneration zone. In response to demand for regeneration, the wall-filtration element regenerates according to a staged regeneration such that the first zone initiates regeneration ahead of the second zone, and each zone regenerates in the direction of the exhaust flow.

Abstract: The present invention provides an engine exhaust gas purification device comprising a filter B provided in an exhaust passage (10) of an engine (1) for trapping particulate matter contained in the exhaust gas, a catalyst A for regenerating the filter B by burning the particulate matter trapped in the filter B, an EGR valve (8) provided in an EGR passage (7) linking the intake side and exhaust side of the engine 1, an injector (2) for injecting fuel into a cylinder, and control unit (20) for controlling the injector (2) and EGR valve (8). During regeneration of the filter B, the control unit (20) close the EGR valve (8) when fuel injection from the injector (2) is controlled to supply unburned fuel components to the catalyst A, and open the EGR valve (8) when no fuel is injected from the injector (2) upon a request for speed reduction or the like. In so doing, residual unburned fuel components in the EGR passage (7) are scavenged by air.

Abstract: A method of forming a sheet member includes feeding first raw slurry into a forming device, dehydrating the first raw slurry to form a first forming body, feeding second raw slurry including inorganic fibers having a minimum diameter substantially equal to or less than 3 micrometers on the dehydrated first slurry, dehydrating the second raw slurry to form a second forming body on the first forming body, feeding third raw slurry into the forming device, dehydrating the third raw slurry to form a third forming body on the first and the second forming bodies, and compressing and dehydrating a forming body having a three-layer structure where the third forming body is formed on the first and the second forming bodies to form a sheet member having a three-layer structure. The first and third raw slurries include inorganic fibers having a minimum diameter substantially greater than 3 micrometers.

Abstract: A filter layer includes at least partially gas-permeable material having a plurality of segments joined to one another in such a way that the filter layer has non-parallel edges. Inexpensive manufacturing methods for such a filter layer, conical honeycomb bodies having the filter layer and particle-filtering exhaust gas purification apparatuses for motor vehicles, are also provided.

Abstract: An apparatus comprises an emissions trap and a loading determination device. The emissions trap is configured to trap emissions present in exhaust gas and comprises a first local region and a second local region. The loading determination device is configured to determine emissions loading of the first local region and emissions loading of the second local region. An associated method is disclosed.

Abstract: A motor control apparatus for a hybrid vehicle with a diesel engine provides for a reduced compulsory regeneration time period so as to achieve enhancement of the fuel cost. The motor control apparatus includes a filter for collecting particulate matter in exhaust gas of the diesel engine, a compulsory regenerator for compulsorily regenerating the filter, and a battery charger for converting the output power of the diesel engine into electric power based on a charged state of the battery, and for charging the battery with the electric power. When the compulsory regeneration is executed, the supply of electric power to the battery by the engine is inhibited.

Abstract: The inventive system for controlling the regeneration of depollution means (1) which is integrated into the exhaust line (2) of a motor vehicle engine (3) and is associated with a common rail fuel supply means for carrying out the depollution means regeneration strategies (6) by using the fuel post-injections into the engine cylinders, wherein said system also comprises, for each regeneration, means (7) for calculating a total time spent in different regeneration strategies and means (8) for comparing said total time with a maximum threshold value (9) in order to stop the regeneration when said threshold is exceeded.

Abstract: The invention relates to a process for obtaining a structure made from a porous ceramic material comprising at least 95% of silicon carbide SiC, said process being characterized in that said structure is obtained from a mixture of SiC grains comprising at least: a first fraction of ?-SiC grains whose median diameter is less than 5 microns; a second fraction of ?-SiC grains whose median diameter is at least two times greater than that of the first fraction of ?-SiC grains and whose median diameter is greater than or equal to 5 microns; and a fraction of ?-SiC grains or of at least a precursor of ?-SiC grains. The invention also relates to the porous structure obtained according to the process.

Abstract: A decoupling element (11) for use with exhaust-gas systems, including an at least partially corrugated bellows (13) having at least two ends in the form of an inlet (E) and an outlet (A) for the flow (S) of the exhaust gas through the decoupling element (11). A filter element (12?) for filtering the exhaust-gas flow (S) is arranged at least partially in the interior (I) of the decoupling element (11) and the filter element (12?) has a self-supporting construction, in particular, without carrier and/or support bodies.

Abstract: The present invention relates to an exhaust gas purification apparatus of a vehicle, a manufacturing method thereof, and a manufacturing device thereof. The exhaust gas purification apparatus that includes a filter in which a plurality of channels are formed therein such that exhaust gas exhausted from a combustion chamber can pass therethrough to trap pollutants included in the exhaust gas, may include a first plug that plugs an inlet of at least one channel, and a second plug that plugs an outlet of at least one channel, wherein the first plug is inserted in a predetermined distance from the inlet of the at least one channel toward an outlet direction thereof at a front surface of the at least one channel.

Abstract: A method of detecting an assembly condition, such as, for example, a misassembly, of an exhaust aftertreatment system of a machine includes a step of executing an aftertreatment assembly diagnostic algorithm. The executing step includes detecting an electronic identification feature of an aftertreatment component of the exhaust aftertreatment system, and comparing the electronic identification feature to an expected value.

Abstract: A ceramic honeycomb filter comprising a sintered ceramic honeycomb body having porous partition walls defining flow paths, and plugs formed in predetermined flow paths for removing particulate matter from an exhaust gas passing through the porous partition walls, the sintered ceramic honeycomb body being formed by a cordierite-based ceramic material, at least part of the plugs comprising ceramic particles and an amorphous oxide matrix formed from colloidal oxide.

Abstract: A system and method for driver-initiation of regeneration of a diesel particulate filter using a service brake pedal in a motor vehicle to reduce the risk that the vehicle will become unattended during on-going regeneration.

Abstract: An electrical connection system for a particulate filter is provided. The system includes: a particulate filter (PF) disposed within an outer shell wherein the PF is segmented into a plurality of heating zones; an outer mat disposed between the particulate filter and the outer shell; an electrical connector coupled to the outer shell of the PF; and a plurality of printed circuit connections that extend along the outer surface of the PF from the electrical connector to the plurality of heating zones.

Abstract: One embodiment of the present invention includes a unique technique to regulate operation of an internal combustion engine. Other embodiments include unique apparatus, devices, systems, and methods relating to internal combustion engine including exhaust aftertreatment components, apparatus, and systems.

Abstract: A method of operating a control unit of an emission abatement assembly includes communicating with an engine control unit of an internal combustion engine. An emission abatement assembly is also disclosed.

Abstract: A mat product, includes a mat member including inorganic fibers and having a full length Lm; and a package member having an full length Lr; wherein the mat member is received in an inside space of the package member; the inside space of the package member is in gas-communication with an outside environment; and the full length Lr of the package member is greater than the full length Lm of the mat member and thereby the mat member can move in the inside space along a full length direction.

Abstract: An exhaust gas recirculation system for an internal combustion engine is disclosed. The exhaust gas recirculation system can include a first turbocharger and a second turbocharger with a particulate filter located between the two turbochargers. The first turbocharger can have a first exhaust turbine and a first charger while the second turbocharger can have a second exhaust turbine and a second charger. The particulate filter can be located between the first exhaust turbine and the second exhaust turbine and thereby remove particulates from an exhaust gas before it reaches the second exhaust turbine. In some instances, an exhaust gas recirculation line can be included and have an inlet that is located downstream from the particulate filter. In addition, the exhaust gas recirculation line can have an outlet that is located between the first charger and the second charger, or in the alternative downstream from the first charger.

Abstract: A carbon deposition eliminating method includes the steps of: a) providing an exhaust pipe having a waste gas inlet and an air inlet at one end and an exhaust gas purifier at the other end and a combustion chamber on the middle, b) using a sensor to detect the pressure of the waste gas in the combustion chamber, c) enabling an automatic control system to open the air inlet for guiding outside fresh air into the combustion chamber when the waste gas pressure in the combustion chamber is high, d) starting a flamethrower to heat the combustion chamber to about 350° C.˜600° C., e) enabling the heated high temperature waste gas to pass through the exhaust gas purifier and to carry cumulated carbon away from the exhaust gas purifier, and f) enabling the automatic control system to close the air inlet and to open the waste gas inlet for letting engine exhaust gas to pass through the exhaust pipe when the waste gas pressure in the combustion chamber drops below the predetermined pressure level.

Abstract: A particulate trap regeneration system is provided, which may include a particulate trap having a filter medium configured to remove one or more types of particulate matter from an exhaust flow of an engine and a regeneration device configured to reduce an amount of particulate matter in the particulate trap, as well as a radio frequency-based particulate loading monitoring system configured to determine an amount of particulate matter trapped by the filter medium. The particulate loading monitoring system may include at least one radio frequency probe configured to transmit radio frequency signals of predetermined magnitude and predetermined frequency toward the filter medium and at least one radio frequency probe configured to receive and measure the magnitude of received radio frequency signals that pass through the filter medium. Further, the system may be configured to transmit radio frequency signals along a length of the exhaust conduit.

Abstract: A regeneration controller for an exhaust purification apparatus (36, 38) of an engine (2) that appropriately burns particulate matter accumulated in the exhaust purification apparatus. The regeneration controller includes an ECU (70) that determines whether an estimated accumulation amount (PMsm) of particulate matter deviates from an actual accumulation amount. When the estimated accumulation amount is less than or equal to a maximum value (BUpm) and an exhaust pressure difference (&Dgr;P/GA) is greater than a replacement reference value (Dp), the ECU replaces the estimated accumulation amount with a greater replacement amount (UPpm). This causes the estimated accumulation amount to approach or to be the same as the actual accumulation amount.

Abstract: Method for determining loading of a filter. The filter has a first dielectric constant. The filter becomes loaded with contaminant material that has a second dielectric constant. The filter, such as a diesel particulate filter, is contained within a metallic enclosure forming a microwave cavity. The method includes establishing microwave energy in the cavity and monitoring changes in the cavity microwave response, the changes being related to filter loading.

Abstract: An apparatus, system, and method are disclosed for determining a regeneration availability profile for an exhaust gas aftertreatment system. The apparatus, in one embodiment, is configured to determine whether required regeneration conditions could be met within the system if attempted. The apparatus may include a data module for storing and retrieving a regeneration availability profile and for receiving regeneration requirements data. The apparatus may further include an input module for receiving input relative to current operating conditions of the exhaust gas aftertreatment system. The apparatus may further include a controller which uses the required regeneration conditions, the retrieved regeneration availability profile, and the input relative to current operating conditions to produce and store a new regeneration availability profile.

Abstract: An apparatus, system, and method are disclosed for determining the distribution of particulate matter on a particulate filter. The apparatus, in one embodiment, determines a first distribution of particulate matter by comparing the pressure change across the particulate filter with a change in engine operating conditions. The apparatus may include an input module for receiving input corresponding to engine operating conditions and input from a differential pressure sensor and a feedback module to determine a first distribution of particulate matter. The apparatus may further include a feed forward module for determining a particulate distribution trend and a selection control module to combine the first distribution of particulate matter with the particulate distribution trend to determine a second distribution of particulate matter. The distribution may be defined as a uniform distribution factor in certain embodiments.

Abstract: An apparatus for evacuating exhaust from an exhaust pipe of a vehicle having an external turbine and an internal turbine connected to the external turbine such that when the external turbine rotates the internal turbine rotates.

Abstract: A self-cleaning diesel exhaust particulate filter system is disclosed wherein burn-off of collected particulate matter is accomplished at normal exhaust gas temperatures, the filter system being provided with a catalyst mixture of a co-formed ceria-zirconia composite and, optionally, a base metal oxide, the presence of which allows regeneration of filters at temperatures that are readily achieved in diesel exhaust systems, including operating conditions that are at low load where lower exhaust temperatures exist.