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.
    @article{66d9411f41044cf9abebf78b58682900,
    title = "Heavy duty diesel exhaust particles during engine motoring formed by lube oil consumption",
    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).",
    keywords = "organometallics, catalytic devices, diesel particles, engine operations, environmental toxicity, heavy duty vehicles, heavy-duty diesel, organometallic materials, semi-volatile materials",
    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}",
    year = "2016",
    doi = "10.1021/acs.est.6b03284",
    language = "English",
    volume = "50",
    pages = "12504--12511",
    journal = "Environmental Science & Technology",
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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

    TY - JOUR

    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

    PY - 2016

    Y1 - 2016

    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

    KW - heavy duty vehicles

    KW - heavy-duty diesel

    KW - organometallic materials

    KW - semi-volatile materials

    U2 - 10.1021/acs.est.6b03284

    DO - 10.1021/acs.est.6b03284

    M3 - Article

    VL - 50

    SP - 12504

    EP - 12511

    JO - Environmental Science & Technology

    JF - Environmental Science & Technology

    SN - 0013-936X

    IS - 22

    ER -