Abstract
| Original language | English |
|---|---|
| Pages (from-to) | 1305-1312 |
| Number of pages | 7 |
| Journal | Journal of the Air and Waste Management Association |
| Volume | 62 |
| Issue number | 11 |
| DOIs | |
| Publication status | Published - 2012 |
| MoE publication type | A1 Journal article-refereed |
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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 journal › Article › Scientific › peer-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 -