[Kwin Abram, Ivan Arbuckle, Kamilla Iskenderova, James Egan, Dennis Shaw] US An exhaust system includes first and second exhaust components with an inter-pipe that fluidly connects an outlet of the first exhaust component to an inlet of the second exhaust component. A passive valve is mounted within the inter-pipe. The second exhaust component defines an internal cavity that is at least partially packed with a high frequency absorption material and cooperates with the passive valve to effectively attenuate low and high frequency noise.

[TAYLOR, William, KONG, Yougen, HUFFMEYER, Christopher, KOZAKIEWICZ, Tomasz, ABEL, John] 950 West 450 South Columbus, IN 47201;2136 Franklin Street Columbus, Indiana 47201;1291 Petrson Court Greenwood, Indiana 46143;8181 E. Rockwood Street Columbus, Indiana 47203;7406 S. Sandcreek Columbus, Indiana 47201;4065 West Conty Road 850 North Freetown, Indiana 47235 An apparatus comprises a combustion engine, an emission abatement device, and a turbocharger. The emission abatement device is fluidly coupled to the engine to receive exhaust gas therefrom. The turbocharger comprises an air compressor that is fluidly coupled to the engine to supply pressurized air to the engine and that is fluidly coupled to the emission abatement device via a flow path not including any combustion section of the engine to supply pressurized air to the emission abatement device. An associated method is disclosed.

[CRANE, JR., Samuel N.] 1209 Orange Street Wilmington, Delaware 19801;2310 North State Road 9 Columbus, Indiana 47203 A method and apparatus for operating a fuel-fired burner of an emission abatement assembly includes advancing exhaust gas from an internal combustion engine to the fuel-fired burner, and determining an amount of useable oxygen present in the exhaust gas. The method further includes adjusting an amount of fuel supplied to the burner based upon the amount of useable oxygen present in the exhaust gas.

[Clive D. Telford] US DE Wilmington An apparatus comprises parallel first and second exhaust gas passageways, a urea injection system, a hydrolysis catalyst, and an SCR catalyst. The urea injection system is configured to inject urea into the first exhaust gas passageway. The hydrolysis catalyst is positioned in the first exhaust gas passageway to generate ammonia at least partially from urea injected into the first exhaust gas passageway by the urea injection system. The SCR catalyst is positioned downstream to reduce NOx with the generated ammonia. An associated method is disclosed.

[IVERSON, Robert, J., ABEL, John, B., KHADIYA, Navin, NOHL, John, P., MORGAN, Geoff, CRAWLEY, Wilbur, H.] 950 West 450 South, Columbus, IN 47201, US

[COOK KENNETH E, HOUTSCHILT ROBERT W] US An exhaust system includes a flange assembly having multiple identical flange portions manufactured of a powdered metal. By assembling each flange assembly from identical flange portions, and utilizing powder metal, manufacturing expense is decreased.

[William Taylor, III, Yougen Kong, Christopher R. Huffmeyer, Tomasz Kozakiewicz, John Abel] US DE Wilimington An apparatus comprises a combustion engine, an emission abatement device, and a turbocharger. The emission abatement device is fluidly coupled to the engine to receive exhaust gas therefrom. The turbocharger comprises an air compressor that is fluidly coupled to the engine to supply pressurized air to the engine and that is fluidly coupled to the emission abatement device via a flow path not including any combustion section of the engine to supply pressurized air to the emission abatement device. An associated method is disclosed.

[Wilbur H. Crawley, Randall J. Johnson] US DE Wilmington An emission abatement assembly includes a first particulate filter having a first fuel-fired burner associated therewith and a second particulate filter having a second fuel-fired burner associated therewith. A control unit controls operation of both the first fuel-fired burner and the second fuel-fired burner. A method of operating an emission abatement assembly is also disclosed.

[PARRISH, Tony R.] 1209 Orange Street, Wilmington, DE 19801, US

[CALLAHAN JOSEPH] US