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Heating System for Ethanol and Intake Air - Numerical Model and Experimental Validation at Cold Start in a Flex Fuel Vehicle with Emissions Analysis
ISSN: 0148-7191, e-ISSN: 2688-3627
Published October 06, 2010 by SAE International in United States
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The increasing number of flex fuel vehicles using pure or mainly ethanol when mixed with gasoline led to a necessity of an auxiliary cold start system. These systems are based on introducing gasoline during the engine's cold phase. The researches lead to find an alternative to avoid using gasoline at cold start systems. This works presents a numerical analysis of the flow and heat transfer in a cold start system, using computational fluid dynamics. A prototypal vehicle was used to validate the simulations. The tests were done at controlled ambient temperatures: 0°C for cold start measurements and 25°C at chassis dynamometer to run the FTP75 emission cycle. The numerical data were validated and the results showed the possibility to get a temperature high enough to assure fuel combustion with emissions benefits.
- Jose Ricardo Sodre - Pontificia Universidade Catolica de Minas Gerais
- Luis Carlos Monteiro Sales - FPT- Fiat Powertrain Technologies
- Robinson Ferrari Barbosa - FPT- Fiat Powertrain Technologies
- Frederico Mesquita Vilela Oliveira - FPT- Fiat Powertrain Technologies
- Zozimo Valdivino da Silva - FPT- Fiat Powertrain Technologies
CitationSales, L., Barbosa, R., Oliveira, F., da Silva, Z. et al., "Heating System for Ethanol and Intake Air - Numerical Model and Experimental Validation at Cold Start in a Flex Fuel Vehicle with Emissions Analysis," SAE Technical Paper 2010-36-0412, 2010, https://doi.org/10.4271/2010-36-0412.
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