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AssigneeDonaldson Company, Inc.
InventorsWayne M. Wagner, Bruce B. Hoppenstedt, Edward A. Steinbrueck, Daniel T. Risch, Richard P. Ryan
Estimating the term…
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.
A filter cartridge arrangement for removing particulates from exhaust gases of an engine of a vehicle, comprising:
A filter cartridge arrangement for removing particulates from exhaust gases of an engine of a vehicle, comprising a filter cartridge with a tubular heater and a tubular, non-filtering, heat insulating sleeve about said heater, said arrangement further including means for energizing said heater, said energizing means including means for controlling on-time as a function of electrical system voltage and heater temperature.
A method for using a filter cartridge arrangement after a determination that a filter cartridge in the arrangement requires regeneration, said arrangement being in operable communication with an electrical system of a vehicle, the electrical system having a range of voltages, the filter cartridge having a range of temperatures when unenergized by heater energizing means, said method comprising the steps of:
Dependencies are inferred from the claim text.