http://www.cnr.it/ontology/cnr/individuo/prodotto/ID66100

Regulated and unregulated emissions reduction with retrofut catalytic after-treatment on small two stroke s.i. engine (Articolo in rivista)

Type

Articolo in rivista (Classe)
Prodotto della ricerca (Classe)

Label

Regulated and unregulated emissions reduction with retrofut catalytic after-treatment on small two stroke s.i. engine (Articolo in rivista) (literal)

Anno

2000-01-01T00:00:00+01:00 (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi

10.4271/2000-01-1846 (literal)

Alternative label

Gambino M., Iannaccone S., Prati M.V., Unich A. (2000)
Regulated and unregulated emissions reduction with retrofut catalytic after-treatment on small two stroke s.i. engine
in SAE technical paper series; Society of Automotive Engineers, Incorporated, 2000, Warrendale (Stati Uniti d'America)
(literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori

Gambino M., Iannaccone S., Prati M.V., Unich A. (literal)

Pagina inizio

1 (literal)

Pagina fine

8 (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#altreInformazioni

Published on Vol. SP - 1544 \"Advanced Emissions Aftertreatment for Gasoline Applications\", pp. 1-8, SAE Paper 2000-01-1846, ISSN 1048-7191, ISBN 0768006139 (ISBN-13: 9780768006131), sessions of the SAE 2000 Spring Fuels and Lubricants Meeting\", \"June 2000\", \"SP-1544\", \"SAE/SP-00/1544\" (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#url

http://papers.sae.org/2000-01-1846 (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume

SP-1544; ISBN:0768006139 (literal)

Rivista

SAE technical paper series (Rivista)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#note

SAE Paper 2000-01-1846 (ISSN 0148-7191). Also in SAE Vol. SP1544 \"Advanced Emissions Aftertreatment for Gasoline Applications\". (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#pagineTotali

9 (literal)

Note

Scopus (literal)
Google Scholar (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni

Istituto Motori, CNR, Napoli. (literal)

Titolo

Regulated and unregulated emissions reduction with retrofut catalytic after-treatment on small two stroke s.i. engine (literal)

Abstract

The contribution to environmental pollution due to mopeds and motorcycles equipped with 2-stroke engines is very high. Then European regulations will impose in the next future severe limits on pollutant emissions of such vehicles. Up to 40% of the charge at high load and low speed can be lost during scavenging, therefore exhaust hydrocarbon speciation is similar to fuel composition, i.e. with a comparable content of benzene. The use of rich air-fuel mixtures, necessary to reduce cyclic variations and improve driveability during transients, determines also high carbon monoxide emissions. On the other hand NOx emissions are very low in all operating conditions, due to the rich mixtures and the high residual gas fraction. An effective solution to reduce emissions from current two-stroke engines for two wheelers in a short time could be retrofitting circulating vehicles with a catalyst for exhaust after-treatment. In fact the technology of catalyst for internal combustion engine exhaust after-treatment is consolidated and, in case of two-stroke engines, a very accurate air-fuel ratio control is not necessary, being a partial CO and HC conversion possible also with rich mixtures because of the presence of oxygen in the exhaust coming from scavenging losses. On the basis of an experimental activity carried out at Istituto Motori of Italian National Research Council (CNR) with the financial support of the Environment Ministry and the technical support of Piaggio VE, a first evaluation of pollutant emissions has been done. The effect of exhaust after-treatment has been evaluated simulating ECE R40 cycle: HC conversion resulted 25%, CO 85% and NOx 45%. Overheating problems do not suggest the use of air injection upstream the catalyst. As concern unregulated species, benzene is reduced of about 45% and 1-3 butadiene presents higher conversion efficiency. First results regarding Polycyclic Aromatic Hydrocarbons (PAH) evaluation have been reported. (literal)

Editore