1
Shiang Sung, Harold N Rabinowitz, Rudolf M Smaling: Exhaust gas treatment system. Engelhard Corporation, Richard A Negin, July 11, 2000: US06087298 (82 worldwide citation)

The present invention relates to an exhaust gas treatment catalytic article having an upstream catalytic zone and at least one downstream catalytic zone. The upstream catalytic zone has an upstream composition which has a first upstream support, and at least one first upstream palladium component. T ...


2
Gopichandra Surnilla, David George Farmer: Method and system for operating dual-exhaust engine. Ford Global Technologies, Julia Voutyras, Allan Lippa, October 22, 2002: US06467259 (40 worldwide citation)

An exhaust gas treatment system for an internal combustion engine includes a pair of upstream emission control devices which respectively receive the exhaust gas generated by a respective group of cylinders, and a single, shared downstream emission control device receiving catalyzed exhaust gas from ...


3
Kiyoshi Amou, Makoto Yamakado, Hiroshi Kusumoto, Masami Nagano, Ikuhisa Hamada, Toshifumi Mukai, Hiroshi Yokota: Engine exhaust gas treatment system and exhaust gas treatment process. Hitachi High Technologies Corporation, Babcock Hitachi, Crowell & Moring, March 31, 2009: US07509799 (29 worldwide citation)

To provide an engine exhaust gas treatment system that can efficiently reduce and remove NOx using easy-to-handle urea as the reducing agent, regardless of the engine operating conditions. An exhaust gas denitration system in which an exhaust gas is introduced into the denitration catalyst reactor 5 ...


4
Amou Kiyoshi, Yamakado Makoto, Kusumoto Hiroshi, Nagano Masami, Hamada Ikuhisa, Mukai Toshifumi, Yokota Hiroshi: Engine exhaust gas treatment system and exhaust gas treatment process. Hitachi, Hitachi High Tech, Babcock Hitachi, December 1, 2004: EP1481719-A2 (27 worldwide citation)

To provide an engine exhaust gas treatment system that can efficiently reduce and remove NOx using easy-to-handle urea as the reducing agent, regardless of the engine operating conditions. An exhaust gas denitration system in which an exhaust gas is introduced into the denitration catalyst reactor ( ...


5
Paul Kueper, Stefan Dietrich Peter, Michael Illek, Jens Mueller, Christian Goerigk, Stefan Wessels: Process for monitoring operation of an exhaust gas treatment system. Dr Ing h c F Porsche Aktiengellschaft, AUDi, Bayerische Motoren Werke Aktiengesellschaft, DaimlerChrysler, Volkswagon, Crowell & Moring, April 9, 2002: US06367320 (25 worldwide citation)

A process for monitoring the operation of a system for the aftertreatment of exhaust gas utilizes respective temperature sensors assigned to catalysts in the exhaust gas system. In addition, a sensor for detecting the NOx content in the exhaust gas is assigned to a reduction catalyst. The detected v ...


6
Holger Plote: Method and device for the control of an exhaust gas treatment system. Robert Bosch, Kenyon & Kenyon, April 20, 2004: US06722120 (21 worldwide citation)

A method and a device are described for controlling an exhaust gas aftertreatment system, in particular of an internal combustion engine. A special operation is intermittently carried out. The control and/or monitoring of the special operation is carried out as a function of a first quantity (O1) wh ...


7
Perga Martin W, DePalma Ted V: Exhaust gas treatment system. Universal Oil Products Company, April 25, 1972: US3657892 (18 worldwide citation)

An exhaust gas treatment method and system for an internal combustion engine utilizing a catalytic converter, wherein carbon or charcoal is incorporated into the system so that the gases H.sub.2 and CO can be produced by the dissociation of water, present in the exhaust gas, and the partial oxidatio ...


8
J umlaut over, Wolfgang Strehlau, Egbert Lox, Thomas Kreuzer: Process for the operation of a nitrogen oxides storage catalyst. Degussa Huls Aktiengesellschaft, Smith Gambrell & Russell, January 9, 2001: US06171565 (17 worldwide citation)

A process of operating a nitrogen oxides storage catalyst of an exhaust gas treatment system is described. The process relates to the cycling of the normalized air/fuel ratio &lgr;-value of the exhaust gas exiting the engine, in which a lambda value greater than 1 represents oxygen-rich, lean burn c ...


9
Eugene L Holt: Substoichiometric air addition to first stage of dual catalyst system. Exxon Research & Engineering Co, L F Kreek, Wayne Hoover, March 16, 1976: US03943709 (17 worldwide citation)

Process and apparatus for reducing emissions from internal combustion engine exhaust gas. The exhaust gas treatment system includes a first stage converter containing an NO.sub.x reduction catalyst, a second stage converter containing a catalyst for oxidation of CO and hydrocarbons, and means for ad ...


10
Shouxian Ren, Michael Christopher Luckham, David B Brown: Exhaust gas treatment system. GM Global Technology Operations, Cantor Colburn, April 2, 2013: US08409515 (16 worldwide citation)

An emission treatment system for a vehicle having an internal combustion engine is described. The emission treatment system has an HC-SCR catalyst including a non-Pt group metal dispersed in a ceramic matrix configured to receive an exhaust gas flow from an engine. The system also has an oxidation c ...