Power plants – Internal combustion engine with treatment or handling of... – Methods
Patent
1993-09-16
1995-03-28
Lazarus, Ira S.
Power plants
Internal combustion engine with treatment or handling of...
Methods
60286, 60300, 60303, F01N 320
Patent
active
054005906
ABSTRACT:
Trap for filtering particulates from diesel engine exhaust including filter cartridge arrangement having heat enhancement elements. In the case of exhaust gases flowing through a filter cartridge from inside to out and the cartridge having an inner tubular heater, heat enhancement elements include a heat insulator plugging the downstream end of the cartridge, a plurality of flow distribution rings which inhibit flow to the end of the cartridge thereby causing more even flow through the cartridge nearer the upstream end, and mechanism for controlling regeneration on-time as a function of vehicle system voltage and pre-energization heater temperature. In the case of a filter cartridge having flow from outside to in and having an outer heater, heat enhancement elements include a tubular, non-filtering, heat insulating sleeve about the heater and mechanism for controlling on-time as a function of vehicle system voltage and pre-energization heater temperature.
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Co-pending application Ser. No. 08/047,772, filed Apr. 14, 1993.
Hoppenstedt Bruce B.
Risch Daniel T.
Ryan Richard P.
Steinbrueck Edward A.
Wagner Wayne M.
Donaldson & Company, Inc.
Lazarus Ira S.
O'Connor Daniel J.
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