Blucher Engineering Proceedings

Setembro 2016, vol.3, num.1 - XXIV Simpósio Internacional de Engenharia Automotiva
Artigo - Open Access Idioma principal | Segundo principal

Beyond noise: gaseous pollution of motorcycles’ replacement exhaust systems in Sao Paulo

Além do ruído: poluição gasosa de sistemas de escape de reposição de motocicletas em São Paulo

FORCETTO, A. L. S.; DAEMME, L. C.

Artigo:

Motorcycles in Sao Paulo Metropolitan Region (SPMR) are in 2014 about one million units or 12% of all registered vehicles, with a presence of 15% in the urban traffic flow and contributing with of 21% of all CO, 12.8% of HC and 2.1% of NOx emitted from vehicles. However, despite all gains in reducing gaseous emissions in new vehicles, about 16% of the motorcycles are running with Non Original Exhaust Systems (NOES), that in Brazil usually have no catalyzer and fewer internal components than an original equipment (OEM), in order to reduce gas flow counterpressure and to produce a typical loud sound like “popping”. NOES brings an individual increment of 1.2 to 12 times in emissions of CO, HC and NOx comparing with OEM, drawing motorcycles back to levels before Brazilian Control Program PROMOT phase M3, equivalent of Euro 3. The objective of this article is to quantify the environmental impact in SPMR due to gaseous emissions of motorcycles equipped with NOES.

Motorcycles in Sao Paulo Metropolitan Region (SPMR) are in 2014 about one million units or 12% of all registered vehicles, with a presence of 15% in the urban traffic flow and contributing with of 21% of all CO, 12.8% of HC and 2.1% of NOx emitted from vehicles. However, despite all gains in reducing gaseous emissions in new vehicles, about 16% of the motorcycles are running with Non Original Exhaust Systems (NOES), that in Brazil usually have no catalyzer and fewer internal components than an original equipment (OEM), in order to reduce gas flow counterpressure and to produce a typical loud sound like “popping”. NOES brings an individual increment of 1.2 to 12 times in emissions of CO, HC and NOx comparing with OEM, drawing motorcycles back to levels before Brazilian Control Program PROMOT phase M3, equivalent of Euro 3. The objective of this article is to quantify the environmental impact in SPMR due to gaseous emissions of motorcycles equipped with NOES.

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DOI: 10.5151/engpro-simea2016-PAP34

Referências bibliográficas
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Como citar:

FORCETTO, A. L. S.; Luiz Carlos Daemme; "Beyond noise: gaseous pollution of motorcycles’ replacement exhaust systems in Sao Paulo", p-240-247. In: Anais do XXIV Simpósio Internacional de Engenharia Automotica - SIMEA 2016 [=Blucher Engineering Proceedings].. São Paulo: Blucher, 2016.
ISSN 23577592, DOI 10.5151/engpro-simea2016-PAP34

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