Study of Miller timing on exhaust emissions of a hydrotreated vegetable oil (HVO)-fueled diesel engine

J. Heikkilä (Corresponding Author), M. Happonen, Timo Murtonen, K. Lehto, T. Sarjovaara, M. Larmi, J. Keskinen, A. Virtanen

    Research output: Contribution to journalArticleScientificpeer-review

    11 Citations (Scopus)

    Abstract

    The effect of intake valve closure (IVC) timing by utilizing Miller cycle and start of injection (SOI) on particulate matter (PM), particle number, and nitrogen oxide (NOx) emissions was studied with a hydrotreated vegetable oil (HVO)-fueled nonroad diesel engine. HVO-fueled engine emissions, including aldehyde and polyaromatic hydrocarbon (PAH) emissions, were also compared with those emitted with fossil EN590 diesel fuel. At the engine standard settings, particle number and NOx emissions decreased at all the studied load points (50%, 75%, and 100%) when the fuel was changed from EN590 to HVO. Adjusting IVC timing enabled a substantial decrease in NOx emission and combined with SOI timing adjustment somewhat smaller decrease in both NOx and particle emissions at IVC −50 and −70 °CA points. The HVO fuel decreased PAH emissions mainly due to the absence of aromatics. Aldehyde emissions were lower with the HVO fuel with medium (50%) load. At higher loads (75% and 100%), aldehyde emissions were slightly higher with the HVO fuel. However, the aldehyde emission levels were quite low, so no clear conclusions on the effect of fuel can be made. Overall, the study indicates that paraffinic HVO fuels are suitable for emission reduction with valve and injection timing adjustment and thus provide possibilities for engine manufacturers to meet the strictening emission limits.
    Original languageEnglish
    Pages (from-to)1305-1312
    Number of pages7
    JournalJournal of the Air and Waste Management Association
    Volume62
    Issue number11
    DOIs
    Publication statusPublished - 2012
    MoE publication typeA1 Journal article-refereed

    Fingerprint

    exhaust emission
    vegetable oil
    diesel engine
    aldehyde
    nitrogen oxides
    engine
    hydrocarbon
    particulate matter
    fossil

    Cite this

    Heikkilä, J. ; Happonen, M. ; Murtonen, Timo ; Lehto, K. ; Sarjovaara, T. ; Larmi, M. ; Keskinen, J. ; Virtanen, A. / Study of Miller timing on exhaust emissions of a hydrotreated vegetable oil (HVO)-fueled diesel engine. In: Journal of the Air and Waste Management Association. 2012 ; Vol. 62, No. 11. pp. 1305-1312.
    @article{c45d438bafe743698480a4d9ef3bb5d5,
    title = "Study of Miller timing on exhaust emissions of a hydrotreated vegetable oil (HVO)-fueled diesel engine",
    abstract = "The effect of intake valve closure (IVC) timing by utilizing Miller cycle and start of injection (SOI) on particulate matter (PM), particle number, and nitrogen oxide (NOx) emissions was studied with a hydrotreated vegetable oil (HVO)-fueled nonroad diesel engine. HVO-fueled engine emissions, including aldehyde and polyaromatic hydrocarbon (PAH) emissions, were also compared with those emitted with fossil EN590 diesel fuel. At the engine standard settings, particle number and NOx emissions decreased at all the studied load points (50{\%}, 75{\%}, and 100{\%}) when the fuel was changed from EN590 to HVO. Adjusting IVC timing enabled a substantial decrease in NOx emission and combined with SOI timing adjustment somewhat smaller decrease in both NOx and particle emissions at IVC −50 and −70 °CA points. The HVO fuel decreased PAH emissions mainly due to the absence of aromatics. Aldehyde emissions were lower with the HVO fuel with medium (50{\%}) load. At higher loads (75{\%} and 100{\%}), aldehyde emissions were slightly higher with the HVO fuel. However, the aldehyde emission levels were quite low, so no clear conclusions on the effect of fuel can be made. Overall, the study indicates that paraffinic HVO fuels are suitable for emission reduction with valve and injection timing adjustment and thus provide possibilities for engine manufacturers to meet the strictening emission limits.",
    author = "J. Heikkil{\"a} and M. Happonen and Timo Murtonen and K. Lehto and T. Sarjovaara and M. Larmi and J. Keskinen and A. Virtanen",
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    year = "2012",
    doi = "10.1080/10962247.2012.708383",
    language = "English",
    volume = "62",
    pages = "1305--1312",
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    Study of Miller timing on exhaust emissions of a hydrotreated vegetable oil (HVO)-fueled diesel engine. / Heikkilä, J. (Corresponding Author); Happonen, M.; Murtonen, Timo; Lehto, K.; Sarjovaara, T.; Larmi, M.; Keskinen, J.; Virtanen, A.

    In: Journal of the Air and Waste Management Association, Vol. 62, No. 11, 2012, p. 1305-1312.

    Research output: Contribution to journalArticleScientificpeer-review

    TY - JOUR

    T1 - Study of Miller timing on exhaust emissions of a hydrotreated vegetable oil (HVO)-fueled diesel engine

    AU - Heikkilä, J.

    AU - Happonen, M.

    AU - Murtonen, Timo

    AU - Lehto, K.

    AU - Sarjovaara, T.

    AU - Larmi, M.

    AU - Keskinen, J.

    AU - Virtanen, A.

    N1 - Project code: 27868

    PY - 2012

    Y1 - 2012

    N2 - The effect of intake valve closure (IVC) timing by utilizing Miller cycle and start of injection (SOI) on particulate matter (PM), particle number, and nitrogen oxide (NOx) emissions was studied with a hydrotreated vegetable oil (HVO)-fueled nonroad diesel engine. HVO-fueled engine emissions, including aldehyde and polyaromatic hydrocarbon (PAH) emissions, were also compared with those emitted with fossil EN590 diesel fuel. At the engine standard settings, particle number and NOx emissions decreased at all the studied load points (50%, 75%, and 100%) when the fuel was changed from EN590 to HVO. Adjusting IVC timing enabled a substantial decrease in NOx emission and combined with SOI timing adjustment somewhat smaller decrease in both NOx and particle emissions at IVC −50 and −70 °CA points. The HVO fuel decreased PAH emissions mainly due to the absence of aromatics. Aldehyde emissions were lower with the HVO fuel with medium (50%) load. At higher loads (75% and 100%), aldehyde emissions were slightly higher with the HVO fuel. However, the aldehyde emission levels were quite low, so no clear conclusions on the effect of fuel can be made. Overall, the study indicates that paraffinic HVO fuels are suitable for emission reduction with valve and injection timing adjustment and thus provide possibilities for engine manufacturers to meet the strictening emission limits.

    AB - The effect of intake valve closure (IVC) timing by utilizing Miller cycle and start of injection (SOI) on particulate matter (PM), particle number, and nitrogen oxide (NOx) emissions was studied with a hydrotreated vegetable oil (HVO)-fueled nonroad diesel engine. HVO-fueled engine emissions, including aldehyde and polyaromatic hydrocarbon (PAH) emissions, were also compared with those emitted with fossil EN590 diesel fuel. At the engine standard settings, particle number and NOx emissions decreased at all the studied load points (50%, 75%, and 100%) when the fuel was changed from EN590 to HVO. Adjusting IVC timing enabled a substantial decrease in NOx emission and combined with SOI timing adjustment somewhat smaller decrease in both NOx and particle emissions at IVC −50 and −70 °CA points. The HVO fuel decreased PAH emissions mainly due to the absence of aromatics. Aldehyde emissions were lower with the HVO fuel with medium (50%) load. At higher loads (75% and 100%), aldehyde emissions were slightly higher with the HVO fuel. However, the aldehyde emission levels were quite low, so no clear conclusions on the effect of fuel can be made. Overall, the study indicates that paraffinic HVO fuels are suitable for emission reduction with valve and injection timing adjustment and thus provide possibilities for engine manufacturers to meet the strictening emission limits.

    U2 - 10.1080/10962247.2012.708383

    DO - 10.1080/10962247.2012.708383

    M3 - Article

    VL - 62

    SP - 1305

    EP - 1312

    JO - Journal of the Air and Waste Management Association

    JF - Journal of the Air and Waste Management Association

    SN - 1096-2247

    IS - 11

    ER -