Aerosol characterisation in medium-speed diesel engines operating with heavy fuel oils

Jussi Lyyränen, Jorma Jokiniemi (Corresponding Author), Esko I. Kauppinen, Jorma Joutsensaari

Research output: Contribution to journalArticleScientificpeer-review

73 Citations (Scopus)

Abstract

Aerosol measurements were carried out in medium-speed diesel engines to determine the aerosol characteristics and formation in four-stroke diesel engines equipped with turbocharger(s) burning heavy fuel and high ash-content heavy fuel oil. The mass size distributions are bimodal with a main mode at 60–90 nm and a second mode at 7–10 μm. The small mode particles are formed by nucleation of volatilized fuel oil ash species, which further grow by condensation and agglomeration. The large mode particles are mainly agglomerates of different sizes consisting of the small particles. The number size distributions peak at 40–60 nm, as also observed in the SEM micrographs. Agglomerates consisting of these primary spherical particles are also found. The TEM micrographs reveal that these particles consist of even smaller structures. Based on the mass and elemental size distributions evidence of high volatility of the fuel oil ash was found. The main effect on the aerosol size distributions was caused by the engine type and fuel oil properties.
Original languageEnglish
Pages (from-to)771-784
Number of pages14
JournalJournal of Aerosol Science
Volume30
Issue number6
DOIs
Publication statusPublished - 1999
MoE publication typeA1 Journal article-refereed

Fingerprint

Ashes
Fuel Oils
Residual fuels
diesel engine
Fuel oils
Aerosols
Diesel engines
aerosol
ash
Condensation
Nucleation
agglomeration
Agglomeration
nucleation
condensation
transmission electron microscopy
Engines
Transmission electron microscopy
engine
Scanning electron microscopy

Cite this

Lyyränen, Jussi ; Jokiniemi, Jorma ; Kauppinen, Esko I. ; Joutsensaari, Jorma. / Aerosol characterisation in medium-speed diesel engines operating with heavy fuel oils. In: Journal of Aerosol Science. 1999 ; Vol. 30, No. 6. pp. 771-784.
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title = "Aerosol characterisation in medium-speed diesel engines operating with heavy fuel oils",
abstract = "Aerosol measurements were carried out in medium-speed diesel engines to determine the aerosol characteristics and formation in four-stroke diesel engines equipped with turbocharger(s) burning heavy fuel and high ash-content heavy fuel oil. The mass size distributions are bimodal with a main mode at 60–90 nm and a second mode at 7–10 μm. The small mode particles are formed by nucleation of volatilized fuel oil ash species, which further grow by condensation and agglomeration. The large mode particles are mainly agglomerates of different sizes consisting of the small particles. The number size distributions peak at 40–60 nm, as also observed in the SEM micrographs. Agglomerates consisting of these primary spherical particles are also found. The TEM micrographs reveal that these particles consist of even smaller structures. Based on the mass and elemental size distributions evidence of high volatility of the fuel oil ash was found. The main effect on the aerosol size distributions was caused by the engine type and fuel oil properties.",
author = "Jussi Lyyr{\"a}nen and Jorma Jokiniemi and Kauppinen, {Esko I.} and Jorma Joutsensaari",
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Aerosol characterisation in medium-speed diesel engines operating with heavy fuel oils. / Lyyränen, Jussi; Jokiniemi, Jorma (Corresponding Author); Kauppinen, Esko I.; Joutsensaari, Jorma.

In: Journal of Aerosol Science, Vol. 30, No. 6, 1999, p. 771-784.

Research output: Contribution to journalArticleScientificpeer-review

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AU - Kauppinen, Esko I.

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PY - 1999

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AB - Aerosol measurements were carried out in medium-speed diesel engines to determine the aerosol characteristics and formation in four-stroke diesel engines equipped with turbocharger(s) burning heavy fuel and high ash-content heavy fuel oil. The mass size distributions are bimodal with a main mode at 60–90 nm and a second mode at 7–10 μm. The small mode particles are formed by nucleation of volatilized fuel oil ash species, which further grow by condensation and agglomeration. The large mode particles are mainly agglomerates of different sizes consisting of the small particles. The number size distributions peak at 40–60 nm, as also observed in the SEM micrographs. Agglomerates consisting of these primary spherical particles are also found. The TEM micrographs reveal that these particles consist of even smaller structures. Based on the mass and elemental size distributions evidence of high volatility of the fuel oil ash was found. The main effect on the aerosol size distributions was caused by the engine type and fuel oil properties.

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