The impact of engine cooling fan configuration on the emission of pollutants by vehicle exhaust systems in chassis dynamometer tests

• Autorzy: Gis W. , Żółtowski A. , Taubert S.
• Języki publikacji: EN

Abstrakty

EN

Reduction of pollutant emission by exhaust systems due to stricter limits has drastically increased the impact of previously ignored factors on the results of emission tests. One such factor is the cooling of the engine by the chassis dynamometer's external fan. Improper cooling can increase the temperature of the engine and the catalytic converter. Preliminary studies conducted by the Motor Transport Institute have confirmed that the configuration of the cooling fan influences exhaust system emissions. This article discusses the results of tests aimed at identifying the cause of changes in emission levels. To achieve this aim, emission levels were measured for various configurations of the chassis dynamometer (including both the fan speed and the distance from the front of the vehicle). During the tests, measurements were taken of temporary pollutant levels in the CVS and of the temperature of exhaust before and after the catalytic converter. The results confirmed the findings of preliminary tests. Increased exhaust emission levels were noted, though not, as anticipated, during the urban driving cycle, but rather during the final phase of the extra-urban driving cycle. Measurements were taken using a single-roller chassis dynamometer equipped with a cooling fan with a regulated fan speed specified by a second-degree curve.

Słowa kluczowe

EN

pollutant emissions; environmental protection

• 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: 2011
• Tom: Vol. 18, No. 3
• Strony: 107--115
• Opis fizyczny: Bibliogr. 2 poz., rys.

Twórcy

autor

Gis W.

autor

Żółtowski A.

autor

Taubert S.

• Motor Transport Institute, Environmental Protection Centre Jagiellońska Street 80, 03-301 Warsaw, Poland tel.: [phone] ext. 125, fax: [phone],

Bibliografia

• [1] ECE Regulation No. 83, Uniform provisions concerning the approval of vehicles with regard to the emission of pollutants according to engine fuel requirements, Revision 3 (doc. E/ECE/324, E/ECE/TRANS/505, Rev.1/Add.82/Rev.3 of April 2005).
• [2] ECE Regulation No. 83, Uniform provisions concerning the approval of vehicles with regard to the emission of pollutants according to engine fuel requirements, Revision 4 (doc. E/ECE/324, E/ECE/TRANS/505, Rev.1/Add.82/Rev.4 of April 2005).