The role of Spark Ignition (SI) and Diesel engines as nanoparticles sources in urban area was investigated. Detection, sizing and counting of particles were realized at the exhaust of a Port Fuel Injection Spark Ignition (PFI SI) engine equipped with a Three-Way Catalyst (TWC) and a Unijet Common Rail (CR) Diesel engine equipped first with an Oxidation Catalyst (OC) and then with a Catalyzed Diesel Particulate Filter (CDPF). Engine operating conditions in high road traffic were considered. Electrical Low Pressure Impactor (ELPI) was used as real-time measurements device for particle size distribution in the range from 7 nm up to 10000 nm. Broadband UV-Visible Extinction and Scattering Spectroscopy (BUVESS) allowed investigating the chemical and physical nature of emitted particles.It was observed that the major contribution to particulate mass is due to Diesel engine equipped with the OC, the other engines contribute only in terms of number concentration.Diesel engine size distributions show a nucleation mode centered around 20-30 nm and an accumulation one centered on 70 nm. The first one dominates downstream the CDPF meanwhile the second one is stronger downstream the OC. At the exhaust of PFI SI engine a large nucleation mode centered around 7 nm is present.BUVESS measurements show that the Diesel particles consisted of soot and that the gasoline ones are due to organic compounds.
Nanoparticles at Internal Combustion Engines Exhaust: Effect on Urban Area
Sae Technical Papers
The Sustainable Mobility Challenge at the National Congress of the Italian Thermotechnical Association (ATI) ; 2006
2006-09-14
Aufsatz (Konferenz)
Englisch
Nanoparticles at internal combustion engine exhaust: effect of urban area
Kraftfahrwesen | 2006
|Exhaust nozzle supercharging of internal combustion engines
Kraftfahrwesen | 1977
|Exhaust Emissions from Small, Utility, Internal Combustion Engines
SAE Technical Papers | 1972
|Exhaust system gas-dynamics in internal combustion engines
Tema Archiv | 2006
|Catalytic Exhaust Emission Control of Small Internal Combustion Engines
SAE Technical Papers | 1989
|