Acoustic two-port simulation model for the particle oxidation catalyst POC

Antti Hynninen, Mats Åbom

Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingsScientific

Abstract

The reduction of the exhaust noise from internal combustion engine (IC-engine) is mainly managed by proper silencer design, while less attention is paid to the acoustic performance of the after treatment devices (ATD). It is known from the earlier studies, that the transmission loss of a typical ATD unit can be quite significant. An ATD unit for diesel engines is classically assembled from several specific parts such as selective catalytic reducers (SCR), diesel oxidation catalysts (DOC) and diesel particulate filters (DPF). One new alternative to the conventional DPF is the particle oxidation catalyst (POCr). The substrate used in the POC-X type filter consists of fine, corrugated metallic wire mesh screens piled askew and rolled into a cylindrical shape. In this paper an acoustic two-port simulation model for POC-X is sought starting from the classical Kirchhoff solution for prediction of the acoustic wave attenuation in narrow channels. According to experimental studies, correction factors to the narrow channel two-port model are proposed.
Original languageEnglish
Title of host publicationProceedings of 43rd International Congress on Noise Control Engineering
Number of pages7
Publication statusPublished - 2014
MoE publication typeB3 Non-refereed article in conference proceedings
Event43rd International Congress on Noise Control Engineering, INTER-NOISE 2014: Improving the World through Noise Control - Melbourne, Australia
Duration: 16 Nov 201419 Nov 2014

Conference

Conference43rd International Congress on Noise Control Engineering, INTER-NOISE 2014
Abbreviated titleINTER-NOISE
CountryAustralia
CityMelbourne
Period16/11/1419/11/14

Fingerprint

fluid filters
catalysts
oxidation
acoustics
silencers
wire cloth
acoustic attenuation
internal combustion engines
wave attenuation
diesel engines
simulation
transmission loss
filters
predictions

Keywords

  • two-port
  • particle oxidation catalyst
  • POC

Cite this

Hynninen, A., & Åbom, M. (2014). Acoustic two-port simulation model for the particle oxidation catalyst POC. In Proceedings of 43rd International Congress on Noise Control Engineering [579]
Hynninen, Antti ; Åbom, Mats. / Acoustic two-port simulation model for the particle oxidation catalyst POC. Proceedings of 43rd International Congress on Noise Control Engineering. 2014.
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abstract = "The reduction of the exhaust noise from internal combustion engine (IC-engine) is mainly managed by proper silencer design, while less attention is paid to the acoustic performance of the after treatment devices (ATD). It is known from the earlier studies, that the transmission loss of a typical ATD unit can be quite significant. An ATD unit for diesel engines is classically assembled from several specific parts such as selective catalytic reducers (SCR), diesel oxidation catalysts (DOC) and diesel particulate filters (DPF). One new alternative to the conventional DPF is the particle oxidation catalyst (POCr). The substrate used in the POC-X type filter consists of fine, corrugated metallic wire mesh screens piled askew and rolled into a cylindrical shape. In this paper an acoustic two-port simulation model for POC-X is sought starting from the classical Kirchhoff solution for prediction of the acoustic wave attenuation in narrow channels. According to experimental studies, correction factors to the narrow channel two-port model are proposed.",
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Hynninen, A & Åbom, M 2014, Acoustic two-port simulation model for the particle oxidation catalyst POC. in Proceedings of 43rd International Congress on Noise Control Engineering., 579, 43rd International Congress on Noise Control Engineering, INTER-NOISE 2014, Melbourne, Australia, 16/11/14.

Acoustic two-port simulation model for the particle oxidation catalyst POC. / Hynninen, Antti; Åbom, Mats.

Proceedings of 43rd International Congress on Noise Control Engineering. 2014. 579.

Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingsScientific

TY - GEN

T1 - Acoustic two-port simulation model for the particle oxidation catalyst POC

AU - Hynninen, Antti

AU - Åbom, Mats

N1 - Project: 85942

PY - 2014

Y1 - 2014

N2 - The reduction of the exhaust noise from internal combustion engine (IC-engine) is mainly managed by proper silencer design, while less attention is paid to the acoustic performance of the after treatment devices (ATD). It is known from the earlier studies, that the transmission loss of a typical ATD unit can be quite significant. An ATD unit for diesel engines is classically assembled from several specific parts such as selective catalytic reducers (SCR), diesel oxidation catalysts (DOC) and diesel particulate filters (DPF). One new alternative to the conventional DPF is the particle oxidation catalyst (POCr). The substrate used in the POC-X type filter consists of fine, corrugated metallic wire mesh screens piled askew and rolled into a cylindrical shape. In this paper an acoustic two-port simulation model for POC-X is sought starting from the classical Kirchhoff solution for prediction of the acoustic wave attenuation in narrow channels. According to experimental studies, correction factors to the narrow channel two-port model are proposed.

AB - The reduction of the exhaust noise from internal combustion engine (IC-engine) is mainly managed by proper silencer design, while less attention is paid to the acoustic performance of the after treatment devices (ATD). It is known from the earlier studies, that the transmission loss of a typical ATD unit can be quite significant. An ATD unit for diesel engines is classically assembled from several specific parts such as selective catalytic reducers (SCR), diesel oxidation catalysts (DOC) and diesel particulate filters (DPF). One new alternative to the conventional DPF is the particle oxidation catalyst (POCr). The substrate used in the POC-X type filter consists of fine, corrugated metallic wire mesh screens piled askew and rolled into a cylindrical shape. In this paper an acoustic two-port simulation model for POC-X is sought starting from the classical Kirchhoff solution for prediction of the acoustic wave attenuation in narrow channels. According to experimental studies, correction factors to the narrow channel two-port model are proposed.

KW - two-port

KW - particle oxidation catalyst

KW - POC

M3 - Conference article in proceedings

SN - 978-0-909882-04-4

BT - Proceedings of 43rd International Congress on Noise Control Engineering

ER -

Hynninen A, Åbom M. Acoustic two-port simulation model for the particle oxidation catalyst POC. In Proceedings of 43rd International Congress on Noise Control Engineering. 2014. 579