Pulsed discharge regeneration of diesel particulate filters

K. Graupner; Jonathan Binner; N. Fox; C. P. Garner; J. E. Harry; D. Hoare; K. S. Ladha; A. Mason; A. M. Williams

doi:10.1007/s11090-013-9433-0

Pulsed discharge regeneration of diesel particulate filters

K. Graupner^*, Jonathan Binner, N. Fox, C. P. Garner, J. E. Harry, D. Hoare, K. S. Ladha, A. Mason, A. M. Williams

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

6 Citations (Scopus)

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Abstract

A novel method for the removal of soot from a diesel particulate filter using pulsed electric discharges is presented. High voltage pulses of between 18 and 25 kV of nano to microsecond duration and with pulse energies of typically 100-200 mJ were applied to the filter via a series spark gap. Initial slow erosion of the soot layer proceeds via the formation of microdischarges. Subsequent spark discharges removed the accumulated soot more effectively from a larger filter volume. Average soot removal rates of ∼0.1-0.2 g/min were achieved at 50 Hz breakdown frequency by optimizing both electrode geometry and breakdown voltage. On-engine long term testing of the technology showed soot removal by pulsed discharge to be reliable, efficient and uniform; a total of 100 g of soot was deposited and removed over 18 filter regeneration cycles.

Original language	English
Pages (from-to)	467-477
Number of pages	11
Journal	Plasma Chemistry and Plasma Processing
Volume	33
Issue number	2
DOIs	https://doi.org/10.1007/s11090-013-9433-0
Publication status	E-pub ahead of print - 20 Jan 2013

Keywords

Environmental applications
Microdischarge
Plasma surface modification
Spark

ASJC Scopus subject areas

General Chemistry
General Chemical Engineering
Condensed Matter Physics
Surfaces, Coatings and Films

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Cite this

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title = "Pulsed discharge regeneration of diesel particulate filters",

abstract = "A novel method for the removal of soot from a diesel particulate filter using pulsed electric discharges is presented. High voltage pulses of between 18 and 25 kV of nano to microsecond duration and with pulse energies of typically 100-200 mJ were applied to the filter via a series spark gap. Initial slow erosion of the soot layer proceeds via the formation of microdischarges. Subsequent spark discharges removed the accumulated soot more effectively from a larger filter volume. Average soot removal rates of ∼0.1-0.2 g/min were achieved at 50 Hz breakdown frequency by optimizing both electrode geometry and breakdown voltage. On-engine long term testing of the technology showed soot removal by pulsed discharge to be reliable, efficient and uniform; a total of 100 g of soot was deposited and removed over 18 filter regeneration cycles.",

keywords = "Environmental applications, Microdischarge, Plasma surface modification, Spark",

author = "K. Graupner and Jonathan Binner and N. Fox and Garner, {C. P.} and Harry, {J. E.} and D. Hoare and Ladha, {K. S.} and A. Mason and Williams, {A. M.}",

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T1 - Pulsed discharge regeneration of diesel particulate filters

AU - Graupner, K.

AU - Binner, Jonathan

AU - Fox, N.

AU - Garner, C. P.

AU - Harry, J. E.

AU - Hoare, D.

AU - Ladha, K. S.

AU - Mason, A.

AU - Williams, A. M.

PY - 2013/1/20

Y1 - 2013/1/20

N2 - A novel method for the removal of soot from a diesel particulate filter using pulsed electric discharges is presented. High voltage pulses of between 18 and 25 kV of nano to microsecond duration and with pulse energies of typically 100-200 mJ were applied to the filter via a series spark gap. Initial slow erosion of the soot layer proceeds via the formation of microdischarges. Subsequent spark discharges removed the accumulated soot more effectively from a larger filter volume. Average soot removal rates of ∼0.1-0.2 g/min were achieved at 50 Hz breakdown frequency by optimizing both electrode geometry and breakdown voltage. On-engine long term testing of the technology showed soot removal by pulsed discharge to be reliable, efficient and uniform; a total of 100 g of soot was deposited and removed over 18 filter regeneration cycles.

AB - A novel method for the removal of soot from a diesel particulate filter using pulsed electric discharges is presented. High voltage pulses of between 18 and 25 kV of nano to microsecond duration and with pulse energies of typically 100-200 mJ were applied to the filter via a series spark gap. Initial slow erosion of the soot layer proceeds via the formation of microdischarges. Subsequent spark discharges removed the accumulated soot more effectively from a larger filter volume. Average soot removal rates of ∼0.1-0.2 g/min were achieved at 50 Hz breakdown frequency by optimizing both electrode geometry and breakdown voltage. On-engine long term testing of the technology showed soot removal by pulsed discharge to be reliable, efficient and uniform; a total of 100 g of soot was deposited and removed over 18 filter regeneration cycles.

KW - Environmental applications

KW - Microdischarge

KW - Plasma surface modification

KW - Spark

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VL - 33

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EP - 477

JO - Plasma Chemistry and Plasma Processing

JF - Plasma Chemistry and Plasma Processing

IS - 2

ER -

Pulsed discharge regeneration of diesel particulate filters

Abstract

Keywords

ASJC Scopus subject areas

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