Experimental study of the influence of exhaust gas recirculation on heat transfer in the firedeck of a direct injection diesel engine
| Autor: | Antonio J. Torregrosa, Josep Salvador-Iborra, Alok Warey, Pablo Olmeda, Alberto Broatch |
|---|---|
| Rok vydání: | 2017 |
| Předmět: |
Thermal efficiency
Wall temperature Thermocouple Combined cycle 020209 energy External combustion engine Energy Engineering and Power Technology 02 engineering and technology Diesel engine law.invention 0203 mechanical engineering law Heat transfer 0202 electrical engineering electronic engineering information engineering Internal combustion engine cooling Exhaust gas recirculation EGR Waste management Renewable Energy Sustainability and the Environment business.industry Chemistry Exhaust gas 020303 mechanical engineering & transports Fuel Technology Nuclear Energy and Engineering Internal combustion engine MAQUINAS Y MOTORES TERMICOS CO2 business |
| Zdroj: | RiuNet. Repositorio Institucional de la Universitat Politécnica de Valéncia instname |
| ISSN: | 0196-8904 |
| DOI: | 10.1016/j.enconman.2017.10.003 |
| Popis: | [EN] Emissions control is a key topic for internal combustion engine development. One of the most widespread technologies to reduce the formation of nitrogen oxides is the recirculation of exhaust gas to the engine intake. Besides, carbon dioxide emissions from internal combustion engines can be reduced by increasing engine efficiency. A relevant factor for engine efficiency is heat rejection. The interaction between heat transfer and exhaust gas recirculation is not fully understood. In this paper, an experimental study is presented which aims to shed light on the influence of high pressure exhaust gas recirculation on heat transfer. Three operating points were analyzed. Heat flux was calculated at several locations of the firedeck from temperature measurements. The results showed that the influence of exhaust gas recirculation on heat transfer was significant. Reductions of heat flux up to 18% were observed. The largest reduction was found in the area near the center of the firedeck. To contextualize the findings in the framework of emissions reduction, the trade-off between nitrogen oxides and carbon dioxide was assessed for all test points. The authors acknowledge General Motors Global R&D for supporting this research. The equipment used in this work was partially supported by FEDER project funds Dotación de infraestructuras científico técnicas para el Centro Integral de Mejora Energética y Medioambiental de Sistemas de Transporte (CiMeT), (FEDER-ICTS-2012-06) , framed in the operational program of unique scientific and technical infrastructure of the Ministry of Science and Innovation of Spain. Josep Salvador-Iborra was partially supported through contract FPI-S2-2016-1357 of Programa de Apoyo para la Investigación y Desarrollo (PAID-01-16) of Universitat Politècnica de València. |
| Databáze: | OpenAIRE |
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