Back to results
US 5,121,601 AGranted
Diesel engine exhaust oxidizer
OwnerRefaat A. Kammelinventor
Life of this patent
Estimating the term…
Loading patent…
Loading patent…
OwnerRefaat A. Kammelinventor
Estimating the term…
An oxidizing device with a microprocessor control means for removing soot and other particulates from the exhaust gases of a diesel engine having an enclosure with a forward inlet for receiving diesel engine exhaust, a main flow path through the enclosure having a medium for trapping soot and other particulates, a bypass through the enclosure for diverting flow from the main flow path, heating elements embedded in the trapping medium, and a microprocessor control means for selectively regenerating the trapping medium in accordance with certain sensed conditions relating to the status of engine operation and the condition of a particulate trapping medium that is disposed in the main flow path. The main flow path has an electrostatic precipitator that is disposed in underlying relationship to the particulate trapping medium in the main flow path and a series of vanes are disposed in underlying relationship to the electrostatic precipitator and serve to redirect the exhaust flow passing through the main flow path and distribute the exhaust flow over the electrostatic precipitator and the trapping medium.
A diesel engine exhaust oxidizing device comprising an enclosure having an inlet for receiving diesel engine exhaust, a main flow path through said enclosure to an outlet of the enclosure, said main flow path containing a medium for trapping particulate material such as soot and removing significant amounts thereof from the exhaust flow through said main flow path, a by-pass through said enclosure for diverting flow from said main flow path, and a microprocessor control means for selectively controlling the flow through said main flow path and said by-pass in accordance with certain sensed conditions relating to the status of engine operation, in which the medium is annular in shape and including a series of nested annular vanes along the length of the interior of the annular medium for taking axial flow and directing it radially outwardly through the medium.
A diesel engine exhaust oxidizing device comprising an enclosure having an inlet for receiving diesel engine exhaust, a main flow path through said enclosure to an outlet of the enclosure, said main flow path containing a medium for trapping particulate material such as soot and removing significant amounts thereof from the exhaust flow through said main flow path, a by-pass through said enclosure for diverting flow from said main flow path, and a microprocessor control means for selectively controlling the flow through said main flow path and said by-pass in accordance with certain sensed conditions relating to the status of engine operation, said control means comprises a microprocessor for determining whether engine conditions are conducive to initiating regeneration of said trapping medium and a valve means for selectively opening and closing said main flow path and said by-pass to exhaust flow which enters the enclosure at said inlet, said enclosure comprises a double-walled cylinder, said main flow path being through an interior portion and the by-pass being through a surrounding portion surrounding said interior portion, means for regenerating the medium after a certain amount of particulate collection by the medium, means for opening said by-pass to flow during regeneration of the medium, and means to entrain the regeneration product with the flow through the by-pass prior to discharge of the flow through said outlet of said enclosure.
Dependencies are inferred from the claim text.