Nanoparticles characterisation at the spark ignition engine exhaust

• Autorzy: Merola S. S. , Tornatore C. , Vaglieco B. M.
• Języki publikacji: EN

Abstrakty

EN

The particles at the exhaust of two Port Fuel Injection Spark Ignition (PFI-SI) engines were characterised in terms of number size distribution and chemical properties. Optical techniques based on the Laser Induced Incandescence (LII) and on the Broadband Ultraviolet - Visible Extinction and Scattering Spectroscopy (BUVESS) were applied. The optical results were compared with those obtained by Electrical Low Pressure Impactor (ELPI). The aim of the work was the characterisation of the nanoparticles emitted by Port Fuel Injection Spark Ignition (PFI - SI) engines in terms of number size distribution and chemical-physical properties. Two PFI - SI engines were used for the experiments: a four-cylinder engine and a research optically accessible single cylinder engine. The experiments were performed at the exhaust of a multi-cylinder SI engine equipped with a three way catalyst (TWC) and in the combustion chamber and at the exhaust of a single-cylinder optical engine. High number concentrations of nanoparticles (D less than 50 nm) were detected. The presence of carbonaceous particles at the exhausts was due to the ignition of the fuel film deposits on the intake valves and on the cylinder walls. This was demonstrated by the optical measurements performed in the combustion chamber of the research engine. Different engine operating conditions were considered.

Słowa kluczowe

EN

nanoparticles; Laser Induced Incandescence; Broadband Ultraviolet - Visible Extinction and Scattering Spectroscopy; Electrical Low Pressure Impactor; spark-ignition engine

• Wydawca: Łukasiewicz Research Network - Institute of Aviation ; European Science Society of Powertrain and Transport KONES Poland ; Wydawnictwo Instytutu Technicznego Wojsk Lotniczych
• Czasopismo: Journal of KONES
• Rocznik: 2008
• Tom: Vol. 15, No. 3
• Strony: 347--355
• Opis fizyczny: Bibliogr. 33 poz., rys.

Twórcy

autor

Merola S. S.

autor

Tornatore C.

autor

Vaglieco B. M.

• Istituto Motori - CNR - Via G. Marconi, 8-80125, Naples (Italy)

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