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| Number | Title | Issue Date |
| 8029582 | Wireless zoned particulate matter filter regeneration control system An assembly includes a particulate matter (PM) filter that comprises an upstream end for receiving exhaust gas, a downstream end and multiple zones. An absorbing layer absorbs microwave energy in one of N frequency ranges and is arranged with the upstream end. N is ... | 10/04/2011 |
| 7981174 | Electrically regenerated exhaust particulate filter for an engine system and operating strategy therefor An exhaust particulate filter for an engine system includes an array of filter cartridges positioned within a shell, each of the cartridges having an electrically powered heating element coupled therewith. Exhaust gases are distributed among the cartridges according... | 07/19/2011 |
| 7931715 | DPF heater attachment mechanisms An exhaust filter system includes a particulate filter (PF) that is disposed downstream from an engine. The PF filters particulates within an exhaust from the engine. A heating element heats particulate matter in the PF. A fastener limits expansion movement of the h... | 04/26/2011 |
| 7905933 | Exhaust gas purifier and filter regenerator An exhaust gas cleaning apparatus and a filter regeneration apparatus that are capable of cleaning a large volume of exhaust gas without any increase in size of a nonmagnetic member around which a working coil for induction heating is wound. The exhaust gas cleaning... | 03/15/2011 |
| 7901475 | Diesel particulate filter with zoned resistive heater A diesel particulate filter assembly comprises a diesel particulate filter (DPF) and a heater assembly. The DPF filters a particulate from exhaust produced by an engine. The heater assembly has a first metallic layer that is applied to the DPF, a resistive layer tha... | 03/08/2011 |
| 7862635 | Shielded regeneration heating element for a particulate filter An exhaust system includes a particulate filter (PF) that is disposed downstream from an engine. The PF filters particulates within an exhaust from the engine. A heating element heats particulate matter in the PF. A catalyst substrate or a flow converter is disposed... | 01/04/2011 |
| 7686857 | Zone heated diesel particulate filter electrical connection 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 an... | 03/30/2010 |
| 7662197 | Method of operating an exhaust gas cleaning unit with particle filter and nitrogen oxygen store In a method for operating an exhaust-gas cleaning unit of a diesel engine including a particle filter and a nitrogen oxide storage device arranged upstream of the particle filter, wherein sulfur regeneration of the nitrogen oxide storage device is performed periodic... | 02/16/2010 |
| 7572305 | Exhaust gas purification for internal combustion engines and method for operating the same The present invention relates to an exhaust emission control apparatus for an internal combustion engine and a process for operating it. The exhaust emission control has a particulate filter for filtering particulate matter from the exhaust of the internal combustio... | 08/11/2009 |
| 7513921 | Exhaust gas filter apparatus capable of regeneration of a particulate filter and method An exhaust gas filter apparatus includes a particulate filter for collecting a particulate from an exhaust gas. The exhaust gas filter also includes a electromagnetic radiation resonator to heat a portion of the particulate to ignite the particulate and regenerate t... | 04/07/2009 |
| 7473288 | Particulate matter reducing apparatus This particulate matter reducing apparatus 10 is provided to burn and reduce particulate matter (“PM”) in an exhaust gas 1 of a diesel engine while collecting the PM on each filter 11 at a low collection rate of 50% or less in total. The fil... | 01/06/2009 |
| 7442218 | Exhaust gas treatment apparatus The present invention is characterized in that a casing 2 connected to an exhaust system 8, a honeycomb filter 3 placed in the inside of the casing 2, the honeycomb filter having a plurality of cells partitioned by partition walls, and pl... | 10/28/2008 |
| 7438739 | Catalyzed soot filter An improved catalyzed soot filter is comprised of a porous ceramic having, on at least a portion of the porous ceramic, an amorphous catalytic phase comprised of an alkali containing oxide glass having therein Si, Al or combination thereof. The improved catalyzed so... | 10/21/2008 |
| 7435288 | System for filtering particulate matter of diesel particulate filter The present invention relates to a system for effectively filtering particulate matter from exhaust gas. Exemplary embodiments of the invention provides a system for capturing diesel-powered vehicle particulate matter in exhaust gas, the system including: a detour c... | 10/14/2008 |
| 7431749 | Catalytic filter for removing soot particulates from diesel engine exhaust and method of preparing the same Disclosed is a catalytic filter for removing soot particulates from diesel engine exhaust, which is comprised of monolithic oxidation catalyst upstream of the catalytic filter, which effectively oxidize gaseous pollutants and volatile organic fractions, and a cataly... | 10/07/2008 |
| 7404840 | Chemically stabilized β-cristobalite and ceramic bodies comprising same A method for rigidifying a fiber-based paper substrate for use in the exhaust system of a combustion device. In the method, a green ceramic fiber-based paper substrate is impregnated with an impregnating dispersion. The impregnated substrate is then dried, calcined ... | 07/29/2008 |
| 7396389 | Abnormality detection apparatus for exhaust gas purification apparatus for internal combustion engine Unless an abnormality exists in piping introducing a pressure from front and rear of DPF 22 into a differential pressure sensor 45, pulsations of pressure propagation through an exhaust passage 21 is offset in a detection value of a pressure dif... | 07/08/2008 |
| 7393376 | Ceramic filter for exhaust gas emission control A ceramic filter assembly that resists cracking. The ceramic filter assembly is formed by integrating a plurality of columnar honeycomb filters made of a porous ceramic sintered material with a ceramic sealing material layer and formed to have a substantially ellipt... | 07/01/2008 |
| 7393386 | Exhaust aftertreatment filter with residual stress control An exhaust aftertreatment filter has a pre-stressed layer bonded to the filter body at the outer periphery and compressively axially pre-stressed in an opposite axial direction to separational axial tensile stress to counteract the latter during regenerative heating... | 07/01/2008 |
| 7393377 | Honeycomb filter and exhaust gas treatment apparatus In a honeycomb filter in which a plurality of cells are formed by porous partition walls, and a predetermined cell whose one end portion is plugged, and a remaining cell whose other end portion is plugged are alternately arranged in such a manner as to form checked ... | 07/01/2008 |
| 7390338 | Method and apparatus for regenerating engine exhaust filters Internal combustion engine exhaust filter devices and the like are regenerated by placement in a reclamation or burn-off furnace, raising the temperature to at least about 800° F. to 900° F. and conducting relatively low volumes of low pressure air through the fil... | 06/24/2008 |
| 7387657 | Honeycomb structural body A honeycomb structural body is constituted with a ceramic block comprising a plurality of through-holes arranged in a longitudinal direction and separated from each other through partition walls, either end portions of which through-holes being sealed. The ceramic b... | 06/17/2008 |
| 7384442 | Ceramic wall-flow filter including heat absorbing elements and methods of manufacturing same A ceramic wall-flow filter for filtering particulate matter from gases and methods for manufacturing such wall-flow filters are disclosed. The filter includes an array of porous ceramic walls defining a pattern of end-plugged inlet and outlet cells, and heat absorbi... | 06/10/2008 |
| 7384455 | Filter service system and method According to an exemplary embodiment of the present disclosure, a method of detecting matter within a filtering device includes measuring a metric indicative of a first quantity of matter within the filtering device and removing a portion of the matter from the filt... | 06/10/2008 |
| 7374600 | System and method for excluding false back pressure faults after installation of a particulate trap filter A method and system for preventing or minimizing false back pressure faults caused by a new particulate filter in an engine exhaust system. When a new particulate filter is placed in an engine exhaust system, the normal back pressure threshold for the fault detectio... | 05/20/2008 |
| 7357822 | Filter control apparatus 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... | 04/15/2008 |
| 7340885 | System for assisting the regeneration of depollution means integrated in an exhaust line of a diesel-engined vehicle This system in which the depollution means (1) are associated with oxidation catalyst-forming means (2), and the engine (4) is associated with common manifold means (7) for feeding fuel and adapted to implement a regeneration strategy usi... | 03/11/2008 |
| 7341614 | Filter and filter assembly The invention provides a filter that has a plurality of through holes and satisfies the expression 2.5×A/B+52.5≦C≦2.5×A/B+60.2 (A≦20, 0 | 03/11/2008 |
| 7332014 | Ceramic structure, method of manufacturing ceramic structure, and device for manufacturing ceramic structure A ceramic structure includes a plurality of porous ceramic members each being warped, each of the plurality of porous ceramic members having a bonding portion and end portions at both ends of each of the plurality of porous ceramic members in a longitudinal directio... | 02/19/2008 |
| 7332016 | Particulate trap with selective blocking element A particulate trap has a housing with an inlet and an outlet. The particulate trap also has a plurality of fluidly isolated filters stacked within the housing, between the inlet and the outlet. The stacked plurality of filters have a stack direction and a transverse... | 02/19/2008 |
| 7329300 | Honeycomb structure, method of manufacturing the same, and discharge fluid purification system A honeycomb structure includes partition walls arranged so as to form a plurality of cells extending to an other-end portion from a one-end portion through an axial direction. There are provided a honeycomb structure including a partition wall having a different hei... | 02/12/2008 |
| 7326264 | Plasma particulate filter A method for reducing the particulate emissions containing carbon of diesel motors uses surface discharges to regenerate a filter. An appropriate wall flow filter is configured from alternately closed longitudinal channels. The electrodes are embedded in the filter ... | 02/05/2008 |
| 7326271 | Honeycomb filter and method of manufacturing the same A honeycomb filter 1 includes a cylindrical honeycomb structure 2 having a plurality of cells 4, and plugging members 7 disposed to alternately plug openings 5 of predetermined cells 4a on the side of one end face ... | 02/05/2008 |
| 7323030 | Apparatus and method for an exhaust aftertreatment device An internally insulated exhaust aftertreatment device with a converter body, an end cone assembly and a sealing device inserted in an annular area between the external shell and the substrate of the converter body. The sealing device is sealingly engaged between an ... | 01/29/2008 |
| 7316722 | Honeycomb structure 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. The columna... | 01/08/2008 |
| 7314496 | Honeycomb structure A honeycomb structural body which is capable of increasing the limiting collection amount of particulate, reducing the pressure loss in use, and reducing fluctuations in the pressure loss even if the flow rate from an internal combustion engine of exhaust gases fluc... | 01/01/2008 |
| 7314501 | Methods and device for filtration of exhaust gases for a diesel engine with a filtration surface which is variable by means of controlled obstruction A method in which all or some of the particles contained in the exhaust gases of a diesel engine are retained on particle filters and burnt due to the action of a combustion catalyst. At least a part of the particle filters are obstructed when the temperature θg of... | 01/01/2008 |
| 7311750 | Filter, method of manufacturing the same, and exhaust gas purification device Ceramic particles, fine particles having smaller average particle diameter smaller than that of the ceramic particles and a reduction-resistant material are mixed to obtain a puddle. The reduction-resistant material is a material that is reduced by carbon at a highe... | 12/25/2007 |
| 7311749 | Filter block for filtering particles contained in the exhaust gas of a combustion engine A filter block for filtering particles contained in the exhaust gas of an internal combustion engine includes a plurality of channels for the circulation of the gas, a channel defined by a wall provided with a filtering zone and which opens out towards the outside v... | 12/25/2007 |
| 7309371 | Narrow pore size distribution cordierite filters with reduced pressure drop A diesel particulate filter having a honeycomb body composed of cordierite and exhibiting a CTE (25-800° C.) of less than 13×10−7/° C.; a median pore diameter, d50, of less than 25 μm; % porosity not less than 53%; and a narrow pore size ... | 12/18/2007 |
