Arvin Technologies, Inc.

Emcon Technologies LLC

Faurecia Emissions Control Technologies Usa, LLC

Randall J Johnson

Wilbur H Crawley

Yougen Kong

Stephen P Goldschmidt

William Taylor, Iii

Nicholas John Birkby

John B Abel

Shoja Farr

David Pearson

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 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

An apparatus comprises a feed-forward arrangement and a closed-loop controller. The feed-forward arrangement is configured to determine a change of a system, the system change being independent of an output of a component of the system. The feed-forward arrangement is further configured to generate a feed-forward signal representative of the system change. The controller is configured to modify a state of the controller in response to the feed-forward signal and to perform closed-loop control of the component based on its modified state.

Method and apparatus for controlling a component by feed-forward closed-loop controller state modification

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.

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

A fuel-fired burner for use with an emission abatement device comprises a pair of electrodes. Each electrode comprises an arc-contact rod to generate an electrical arc therebetween.

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Seymour, IN, United States of America

Randall J Johnson