Arvin Technologies, Inc.

Emcon Technologies LLC

Faurecia Emissions Control Technologies Usa, LLC

Arvin Industries, Inc.

Faurecia Emissions Control Technologies, Germany Gmbh

Wilbur H Crawley

Randall J Johnson

John P Nohl

John B Abel

Stephen P Goldschmidt

Navin Khadiya

Yougen Kong

Geoff Morgan

Prasad Tumati

Robert J Iverson

William Taylor, Iii

Marco Ranalli

Tony Parrish

Nicholas John Birkby

Jurgen Klement

Wolfgang Hahnl

Tobias Danner

Barbara Lacher

David E Wright

James K Krider

David Pearson

Shoja Farr

Barbara Zimmermann

Jürgen Klement

A method of regenerating an exhaust gas purification filter, in particular for internal combustion engines, uses a vaporized liquid that is to be introduced into the exhaust gas flow. A surface temperature of a heating element in a vaporizer chamber is limited to a maximum of 700 to 750&#xb0; C.

Method of regenerating an exhaust gas purification filter, and vaporizer

An emission abatement assembly includes a fuel-fired burner having a combustion chamber and a particulate filter positioned downstream of the fuel-fired burner. A mixing baffle is positioned between the fuel-fired burner and the particulate filter.

Emission abatement assembly having a mixing baffle and associated method

A method of operating an emission abatement assembly includes separating the exhaust gas flow entering through the gas inlet port of the fuel-fired burner into a combustion flow which is advanced through the combustion chamber, and a bypass flow which bypasses the combustion chamber. An emission abatement assembly is also disclosed.

Method and apparatus for directing exhaust gas through a fuel-fired burner of an emission abatement assembly

A method and apparatus for identifying a component failure within a thermal regenerator operates as follows. The burner control unit monitors at least one of a fuel pump characteristic for a fuel pump and an ignition system characteristic for an ignition system. The fuel pump is used to supply fuel to a fuel-fired burner and the ignition system is used to ignite fuel supplied to the fuel-fired burner. The fuel pump characteristic is communicated to the burner control unit which compares the fuel pump characteristic to a predetermined fuel pump criteria. The ignition system characteristic is communicated to the burner control unit which compares the ignition system characteristic to a predetermined ignition system criteria. The burner control unit identifies a fuel pump failure when the fuel pump characteristic does not meet the fuel pump criteria, and identifies an ignition system failure when the ignition system characteristic does not meet the ignition system criteria.

Diagnostic method and apparatus for thermal regenerator after-treatment device

A method of starting up a fuel-fired burner of an emission abatement assembly includes lowering the fuel rate being supplied to the burner once flame ignition is detected. The fuel rate is maintained at this lower level as the assembly preheats. Once preheated, the fuel level is ramped up to a predetermined operational fuel level. An emission abatement assembly is also disclosed.

Method and apparatus for starting up a fuel-fired burner of an emission abatement assembly

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.

Method and apparatus for controlling a fuel-fired burner of an emission abatement assembly

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.

Emission abatement assembly and method of operating the same

A method of monitoring ash buildup in a particulate filter includes determining particulate accumulation in the filters subsequent to filter regeneration to determine when the filter is in need of servicing to remove ash there from. An emission abatement assembly is also disclosed.

Method and apparatus for monitoring ash accumulation in a particulate filter of an emission abatement assembly

A particulate filter assembly includes an electrode assembly, a particulate filter positioned in an electrode gap defined between two electrodes of the electrode assembly, a power supply electrically coupled to the electrode assembly, and a controller for controlling operation of the power supply to apply a regenerate-filter signal to the electrode assembly to oxidize particulates collected by the particulate filter. An associated method of regenerating the particulate filter is disclosed.

Particulate filter assembly and associated method

A circuit for providing a potential difference across a gap between two electrodes of a fuel reformer, oxides of nitrogen trap or soot filter regenerator for an internal combustion engine or the like. The circuit includes a power source, a transformer including a primary winding and a secondary winding for coupling across the electrodes. The power source is coupled to the primary winding. A switch or switches is/are coupled to the primary winding.

Power supply and transformer

A diesel engine exhaust system includes a NOx absorber and a diesel fuel fired burner operated at an enriched fuel-to-air ratio to generate a sufficient quantity of CO and Hfor regenerating the NOx absorber. A method of operating a diesel exhaust system is also disclosed.

Method and apparatus for regenerating a nitrogen oxides absorber

A method of monitoring engine performance as a function of soot accumulation in a particulate filter includes determining characteristics of soot accumulation in the filter, analyzing the characteristics, and generating an error signal if the characteristics are indicative of predetermined engine performance conditions. An electronic controller configured to monitor soot accumulation in such a manner is also herein disclosed.

Method and apparatus for monitoring engine performance as a function of soot accumulation in a filter

A control unit for controlling operation of a fuel-fired burner includes a housing having an air inlet which is open to an interior chamber of the housing. An air pump is positioned in the interior chamber of the housing and has an air inlet which is open to the interior chamber of the housing. The air pump generates reduced air pressure in the interior chamber which draws air into the housing and into the pump's inlet. This flow of air cools an electronic controller along with other components position in the housing. The air pump may be operated to draw air from the interior chamber of the housing and supplies the air to a combustion chamber of the fuel-fired burner to facilitate operation of the burner. An associated method of advancing air to a fuel-fired burner is also disclosed.

Method and apparatus for cooling the components of a control unit of an emission abatement assembly

A method of operating a fuel-fired burner of an emission abatement assembly includes supplying a reduced amount of fuel to the fuel-fired burner in response to detection of a burner shutdown request. Such a reduced fuel supply continues for a predetermined time period after which fuel is no longer supplied to the burner. The supply of both combustion air and atomization air, along with spark generation, continues for a period of time after the fuel is shutoff. An emission abatement assembly is also disclosed.

Growing community of inventors

Columbus, IN, United States of America

Wilbur H Crawley