Heavy duty diesel exhaust particles during engine motoring formed by lube oil consumption

Panu Karjalainen, Leónidas Ntziachristos (Corresponding Author), Timo Murtonen, Hugo Wihersaari, Pauli Simonen, Fanni Mylläri, Nils-Olof Nylund, Jorma Keskinen, Topi Rönkkö

Research output: Contribution to journalArticleScientificpeer-review

13 Citations (Scopus)

Abstract

This study reports high numbers of exhaust emissions particles during engine motoring. Such particles were observed in the exhaust of two heavy duty vehicles with no diesel particle filter (DPF), driven on speed ramp tests and transient cycles. A significant fraction of these particles was nonvolatile in nature. The number-weighted size distribution peak was below 10 nm when a thermodenuder was used to remove semivolatile material, growing up to 40 nm after semivolatile species condensation. These particles were found to contribute to 9-13% of total particle number emitted over a complete driving cycle. Engine motoring particles originated from lube oil and evidence suggests that these are of heavy organic or organometallic material. Particles of similar characteristics have been observed in the core particle mode during normal fired engine operation. Their size and chemical character has implications primarily on the environmental toxicity of non-DPF diesel and, secondarily, on the performance of catalytic devices and DPFs. Lube oil formulation measures can be taken to reduce the emission of such particles. (Graph Presented).
Original languageEnglish
Pages (from-to)12504-12511
JournalEnvironmental Science & Technology
Volume50
Issue number22
DOIs
Publication statusPublished - 2016
MoE publication typeA1 Journal article-refereed

Fingerprint

Vehicle Emissions
diesel
engine
Oils
Engines
oil
Organometallics
Toxicity
Condensation
particle
consumption
filter
exhaust emission
condensation

Keywords

  • organometallics
  • catalytic devices
  • diesel particles
  • engine operations
  • environmental toxicity
  • heavy duty vehicles
  • heavy-duty diesel
  • organometallic materials
  • semi-volatile materials

Cite this

Karjalainen, P., Ntziachristos, L., Murtonen, T., Wihersaari, H., Simonen, P., Mylläri, F., ... Rönkkö, T. (2016). Heavy duty diesel exhaust particles during engine motoring formed by lube oil consumption. Environmental Science & Technology, 50(22), 12504-12511. https://doi.org/10.1021/acs.est.6b03284
Karjalainen, Panu ; Ntziachristos, Leónidas ; Murtonen, Timo ; Wihersaari, Hugo ; Simonen, Pauli ; Mylläri, Fanni ; Nylund, Nils-Olof ; Keskinen, Jorma ; Rönkkö, Topi. / Heavy duty diesel exhaust particles during engine motoring formed by lube oil consumption. In: Environmental Science & Technology. 2016 ; Vol. 50, No. 22. pp. 12504-12511.
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abstract = "This study reports high numbers of exhaust emissions particles during engine motoring. Such particles were observed in the exhaust of two heavy duty vehicles with no diesel particle filter (DPF), driven on speed ramp tests and transient cycles. A significant fraction of these particles was nonvolatile in nature. The number-weighted size distribution peak was below 10 nm when a thermodenuder was used to remove semivolatile material, growing up to 40 nm after semivolatile species condensation. These particles were found to contribute to 9-13{\%} of total particle number emitted over a complete driving cycle. Engine motoring particles originated from lube oil and evidence suggests that these are of heavy organic or organometallic material. Particles of similar characteristics have been observed in the core particle mode during normal fired engine operation. Their size and chemical character has implications primarily on the environmental toxicity of non-DPF diesel and, secondarily, on the performance of catalytic devices and DPFs. Lube oil formulation measures can be taken to reduce the emission of such particles. (Graph Presented).",
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author = "Panu Karjalainen and Le{\'o}nidas Ntziachristos and Timo Murtonen and Hugo Wihersaari and Pauli Simonen and Fanni Myll{\"a}ri and Nils-Olof Nylund and Jorma Keskinen and Topi R{\"o}nkk{\"o}",
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Karjalainen, P, Ntziachristos, L, Murtonen, T, Wihersaari, H, Simonen, P, Mylläri, F, Nylund, N-O, Keskinen, J & Rönkkö, T 2016, 'Heavy duty diesel exhaust particles during engine motoring formed by lube oil consumption', Environmental Science & Technology, vol. 50, no. 22, pp. 12504-12511. https://doi.org/10.1021/acs.est.6b03284

Heavy duty diesel exhaust particles during engine motoring formed by lube oil consumption. / Karjalainen, Panu; Ntziachristos, Leónidas (Corresponding Author); Murtonen, Timo; Wihersaari, Hugo; Simonen, Pauli; Mylläri, Fanni; Nylund, Nils-Olof; Keskinen, Jorma; Rönkkö, Topi.

In: Environmental Science & Technology, Vol. 50, No. 22, 2016, p. 12504-12511.

Research output: Contribution to journalArticleScientificpeer-review

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T1 - Heavy duty diesel exhaust particles during engine motoring formed by lube oil consumption

AU - Karjalainen, Panu

AU - Ntziachristos, Leónidas

AU - Murtonen, Timo

AU - Wihersaari, Hugo

AU - Simonen, Pauli

AU - Mylläri, Fanni

AU - Nylund, Nils-Olof

AU - Keskinen, Jorma

AU - Rönkkö, Topi

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N2 - This study reports high numbers of exhaust emissions particles during engine motoring. Such particles were observed in the exhaust of two heavy duty vehicles with no diesel particle filter (DPF), driven on speed ramp tests and transient cycles. A significant fraction of these particles was nonvolatile in nature. The number-weighted size distribution peak was below 10 nm when a thermodenuder was used to remove semivolatile material, growing up to 40 nm after semivolatile species condensation. These particles were found to contribute to 9-13% of total particle number emitted over a complete driving cycle. Engine motoring particles originated from lube oil and evidence suggests that these are of heavy organic or organometallic material. Particles of similar characteristics have been observed in the core particle mode during normal fired engine operation. Their size and chemical character has implications primarily on the environmental toxicity of non-DPF diesel and, secondarily, on the performance of catalytic devices and DPFs. Lube oil formulation measures can be taken to reduce the emission of such particles. (Graph Presented).

AB - This study reports high numbers of exhaust emissions particles during engine motoring. Such particles were observed in the exhaust of two heavy duty vehicles with no diesel particle filter (DPF), driven on speed ramp tests and transient cycles. A significant fraction of these particles was nonvolatile in nature. The number-weighted size distribution peak was below 10 nm when a thermodenuder was used to remove semivolatile material, growing up to 40 nm after semivolatile species condensation. These particles were found to contribute to 9-13% of total particle number emitted over a complete driving cycle. Engine motoring particles originated from lube oil and evidence suggests that these are of heavy organic or organometallic material. Particles of similar characteristics have been observed in the core particle mode during normal fired engine operation. Their size and chemical character has implications primarily on the environmental toxicity of non-DPF diesel and, secondarily, on the performance of catalytic devices and DPFs. Lube oil formulation measures can be taken to reduce the emission of such particles. (Graph Presented).

KW - organometallics

KW - catalytic devices

KW - diesel particles

KW - engine operations

KW - environmental toxicity

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KW - heavy-duty diesel

KW - organometallic materials

KW - semi-volatile materials

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