Design and evaluation of a sintered metal fiber filter for gasoline direct injection engine exhaust aftertreatment

Qisheng Ou, M. Matti Maricq, James Pakko, Timothy B. Chanko, David Y Pui

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

A novel metal fiber gasoline particulate filter (GPF) is designed and evaluated as a potential improvement to the traditional automotive wall flow substrate. A procedure based on single fiber efficiency theory and the Kuwabara flow model for fibrous filter media is developed to optimize filter design. The prototype design is derived from two constraints, namely to maximize PM removal efficiency while minimizing filter backpressure. Metal fibers are chosen that tolerate gasoline engine exhaust temperatures and pleating is used to fulfill size limits dictated by vehicle space constraints. Two prototypes are evaluated by vehicle and engine dynamometer testing. These tests reveal PM filtration efficiencies of greater than 78% for both the FTP and US06 drive cycles, with an average backpressure of approximately 1 kPa over a US06 drive cycle on a 2.0 L GDI light duty vehicle. Measured PM removal efficiencies at constant exhaust temperature and flowrate agree well with model predictions. Backpressure predictions agree withs measurements after accounting for GPF entrance and exit effects. The metal fiber GPF performance is discussed relative to the current state of the art wall flow filters and the limited literature data on metal foam filters. Whereas the fibrous media offers excellent efficiency and backpressure penalty, achieving surface areas comparable to wall flow substrates remains a challenge for practical implementation.

Original languageEnglish (US)
Pages (from-to)12-23
Number of pages12
JournalJournal of Aerosol Science
Volume133
DOIs
StatePublished - Jul 1 2019

Fingerprint

Vehicle Emissions
Exhaust systems (engine)
Direct injection
Gasoline
engine
Wall flow
Metals
filter
Fibers
metal
Guanine Nucleotide Dissociation Inhibitors
Dynamometers
Substrates
Foams
substrate
fibre
evaluation
Engines
prediction
Temperature

Cite this

Design and evaluation of a sintered metal fiber filter for gasoline direct injection engine exhaust aftertreatment. / Ou, Qisheng; Maricq, M. Matti; Pakko, James; Chanko, Timothy B.; Pui, David Y.

In: Journal of Aerosol Science, Vol. 133, 01.07.2019, p. 12-23.

Research output: Contribution to journalArticle

@article{63fdd8d68e0e40d8937743d8b9a23e98,
title = "Design and evaluation of a sintered metal fiber filter for gasoline direct injection engine exhaust aftertreatment",
abstract = "A novel metal fiber gasoline particulate filter (GPF) is designed and evaluated as a potential improvement to the traditional automotive wall flow substrate. A procedure based on single fiber efficiency theory and the Kuwabara flow model for fibrous filter media is developed to optimize filter design. The prototype design is derived from two constraints, namely to maximize PM removal efficiency while minimizing filter backpressure. Metal fibers are chosen that tolerate gasoline engine exhaust temperatures and pleating is used to fulfill size limits dictated by vehicle space constraints. Two prototypes are evaluated by vehicle and engine dynamometer testing. These tests reveal PM filtration efficiencies of greater than 78{\%} for both the FTP and US06 drive cycles, with an average backpressure of approximately 1 kPa over a US06 drive cycle on a 2.0 L GDI light duty vehicle. Measured PM removal efficiencies at constant exhaust temperature and flowrate agree well with model predictions. Backpressure predictions agree withs measurements after accounting for GPF entrance and exit effects. The metal fiber GPF performance is discussed relative to the current state of the art wall flow filters and the limited literature data on metal foam filters. Whereas the fibrous media offers excellent efficiency and backpressure penalty, achieving surface areas comparable to wall flow substrates remains a challenge for practical implementation.",
author = "Qisheng Ou and Maricq, {M. Matti} and James Pakko and Chanko, {Timothy B.} and Pui, {David Y}",
year = "2019",
month = "7",
day = "1",
doi = "10.1016/j.jaerosci.2019.04.003",
language = "English (US)",
volume = "133",
pages = "12--23",
journal = "Journal of Aerosol Science",
issn = "0021-8502",
publisher = "Elsevier Limited",

}

TY - JOUR

T1 - Design and evaluation of a sintered metal fiber filter for gasoline direct injection engine exhaust aftertreatment

AU - Ou, Qisheng

AU - Maricq, M. Matti

AU - Pakko, James

AU - Chanko, Timothy B.

AU - Pui, David Y

PY - 2019/7/1

Y1 - 2019/7/1

N2 - A novel metal fiber gasoline particulate filter (GPF) is designed and evaluated as a potential improvement to the traditional automotive wall flow substrate. A procedure based on single fiber efficiency theory and the Kuwabara flow model for fibrous filter media is developed to optimize filter design. The prototype design is derived from two constraints, namely to maximize PM removal efficiency while minimizing filter backpressure. Metal fibers are chosen that tolerate gasoline engine exhaust temperatures and pleating is used to fulfill size limits dictated by vehicle space constraints. Two prototypes are evaluated by vehicle and engine dynamometer testing. These tests reveal PM filtration efficiencies of greater than 78% for both the FTP and US06 drive cycles, with an average backpressure of approximately 1 kPa over a US06 drive cycle on a 2.0 L GDI light duty vehicle. Measured PM removal efficiencies at constant exhaust temperature and flowrate agree well with model predictions. Backpressure predictions agree withs measurements after accounting for GPF entrance and exit effects. The metal fiber GPF performance is discussed relative to the current state of the art wall flow filters and the limited literature data on metal foam filters. Whereas the fibrous media offers excellent efficiency and backpressure penalty, achieving surface areas comparable to wall flow substrates remains a challenge for practical implementation.

AB - A novel metal fiber gasoline particulate filter (GPF) is designed and evaluated as a potential improvement to the traditional automotive wall flow substrate. A procedure based on single fiber efficiency theory and the Kuwabara flow model for fibrous filter media is developed to optimize filter design. The prototype design is derived from two constraints, namely to maximize PM removal efficiency while minimizing filter backpressure. Metal fibers are chosen that tolerate gasoline engine exhaust temperatures and pleating is used to fulfill size limits dictated by vehicle space constraints. Two prototypes are evaluated by vehicle and engine dynamometer testing. These tests reveal PM filtration efficiencies of greater than 78% for both the FTP and US06 drive cycles, with an average backpressure of approximately 1 kPa over a US06 drive cycle on a 2.0 L GDI light duty vehicle. Measured PM removal efficiencies at constant exhaust temperature and flowrate agree well with model predictions. Backpressure predictions agree withs measurements after accounting for GPF entrance and exit effects. The metal fiber GPF performance is discussed relative to the current state of the art wall flow filters and the limited literature data on metal foam filters. Whereas the fibrous media offers excellent efficiency and backpressure penalty, achieving surface areas comparable to wall flow substrates remains a challenge for practical implementation.

UR - http://www.scopus.com/inward/record.url?scp=85064157460&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85064157460&partnerID=8YFLogxK

U2 - 10.1016/j.jaerosci.2019.04.003

DO - 10.1016/j.jaerosci.2019.04.003

M3 - Article

VL - 133

SP - 12

EP - 23

JO - Journal of Aerosol Science

JF - Journal of Aerosol Science

SN - 0021-8502

ER -