Agosto 2024 vol. 11 num. 1 - XXXI Simpósio Internacional de Engenharia Automotiva

Trabalho completo - Open Access.

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Método FEV sintético exclusivo de caracterização e envelhecimento acelerado de catalisadores para sistemas de pós-tratamento de gases de escape

Unique FEV Process for Accelerated Synthetic Aging and Characterization of Three-Way Catalysts and Gasoline Particulate Filter for Exhaust Aftertreatment Systems

COX, J. ; PROTZ, M. ; RECKER, P. ; DUQUE, O.J. ; DOLS, THOMAS ;

Trabalho completo:

Considerando as legislações atuais, é necessário para a calibração criar e examinar sistemas de escape envelhecidos de forma realista para motores a combustão por centelha de acordo com os requisitos. O envelhecimento é visto como a desativação de um catalisador três vias, bem como a deterioração do filtro de partículas. A FEV desenvolveu um banco de testes de queimador patenteado que fornece um método para o envelhecimento sintético. Em comparação com os procedimentos convencionais de envelhecimento, tanto os custos quanto as emissões de CO2 são reduzidos. Devido às mesmas condições dinâmicas e ao uso de combustíveis idênticos, são alcançados resultados de envelhecimento equivalentes no banco de testes de queimador em comparação com o banco de testes de motor ou a durabilidade veículo. Adicionalmente, é possível a geração de catalisadores MILON no banco de testes e validados por testes de emissões, considerando os limites do OBD. Além disso, um banco de testes de gás é usado para investigar como os catalisadores envelhecidos reagem aos combustíveis europeus e brasileiros. Com a introdução de filtros de partículas de gasolina, é necessário considerar cargas com cinzas geradas realisticamente para durabilidade que levam a mudanças na eficiência de filtragem e na contrapressão.

Trabalho completo:

In consideration of current legislations, it is necessary for the calibration of vehicles to create and examine a realistically aged exhaust system for the gasoline sector according to the requirements. Aging is seen as the deactivation of a three-way catalyst as well as the deterioration of the particulate filter behavior. FEV has developed a patented burner test bench that provides a method for synthetic aging. Compared to conventional engine aging procedures, both costs and CO2 emissions are reduced. Due to the same dynamic conditions and the use of identical fuels, equivalent aging results are achieved on the burner test bench compared to the engine test bench or the vehicle endurance run. In addition, borderline catalysts for OBD, are tailored on the test bench and validate by vehicle emission tests, considering the OBD limits. Furthermore, a laboratory gas test bench is used to investigate how aged catalysts react to European and Brazilian fuels. With the introduction of gasoline particulate filters in the exhaust system, it is also necessary to consider loadings with realistic generated ash for endurance runs that lead to changes in filtration efficiency and backpressure behavior.

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DOI: 10.5151/simea2024-PAP66

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Como citar:

COX, J.; PROTZ, M.; RECKER, P.; DUQUE, O.J.; DOLS, THOMAS; "Método FEV sintético exclusivo de caracterização e envelhecimento acelerado de catalisadores para sistemas de pós-tratamento de gases de escape", p. 330-342 . In: Anais do XXXI Simpósio Internacional de Engenharia Automotiva . São Paulo: Blucher, 2024.
ISSN 2357-7592, DOI 10.5151/simea2024-PAP66

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