Análisis de emisiones transitorias de óxidos de nitrógeno al escape de un motor de ciclo Otto multipunto a partir del comportamiento de la relación aire – combustible y del avance del encendido

Paúl Montúfar Paz; Milton Quinga; Vicente Romero Hidalgo; Olga Barrera Cárdenas

Paúl Montúfar Paz Escuela Superior Politécnica de Chimborazo
Milton Quinga Escuela Superior Politécnica de Chimborazo
Vicente Romero Hidalgo Escuela Superior Politécnica de Chimborazo
Olga Barrera Cárdenas Escuela Superior Politécnica de Chimborazo

Resumen

This research analyzes the emissions of oxides of nitrogen, NOx, emitted by an internal combustion engine, indirect injection multipoint Renault 1.8 L and its behavior in function of the values of lambda to suggest strategies of control of the oxygen content, with a better Functional sampling at the time, to the exhaust of the engine in order to mitigate the production of these toxic emissions. The analysis of the production of these emissions was done experimentally in an engine dynamometer where the engine was subjected to different conditions of load and revolutions to find the habitual behavior of a motor of a light vehicle before the information obtained by the Electronic Control Module From the monitoring performed by a conventional high and low oxygen probe. The study aims to focus the incidence of this type of monitoring on the production of NOx and to propose alternatives that offer a greater range of measurements offering advantages from the environmental point of view to a compound that has a high degree of toxicity and affectation on the respiratory system causing a significant increase in cases of lung cancer.

Index Terms— NOx, lambda, dynamometer, oxygen sensor, ignition advance

Citas

1. Hill, S. C. y Douglas Smoot, L “Modeling of nitrogen oxides formation and destruction in combustion systems” Progress in Energy and Combustion Science, 2000, vol. 26 p. 417 – 458. [consultado el 5 de diciembre de 2017]. Disponible en: http://www.sciencedirect.com/science/article/pii/S0360128500000113
2. Payri, F y De Psantes, J Motores de combustión alterna alternativos. México. Editorial Reverte. 1016 p. p. 656 – 711
3. Degobert Paul. Automobile et Pollution. Editions Technip. Paris. 1992.
4. Payri, F., et al., (1979), “Soluciones a la contaminación de motores térmicos alternativos de automoción”, Monografía sobre medio ambiente, serie tecnología y recursos naturales, Vol. 1.
5. Crouse, W.H., (1971), “Automotive Emission Control”, McGraw-Hill, New York
6. Hollemans, B., et al. (1993), “Emission Comparison of LPG / Gasoline / diesel in passenger cars”, TNO road vehículo research institute.
7. Rajput R.K. Internal Combustion Engines. 5th ed. New York: McGraw-Hill, 879 p. p. 221-235.
8. Richard Stone. Introduction to Internal Combustion Engines. 3th ed. Londres. Antony Rowe Ltd. 635 p. p.98 – 109.
9. Pulkrabek Willard W. Engineering Fundamentals of the Internal Combustion Engine. 2nd. Edition. Plateville. Ed. Prentice Hall. 395 p. p. 277-312
10. Bishop, G. A., Stedman D. H., De la Garza, J., and Dávalos, Vol. 31, No. 12. 3505-3510. On-Road Remote Sensing of Vehicle Emissions in Mexico. F., 1997. Environmental Science & Technology,
11. NaokiTakahashi. “The new concept 3-way catalyst for automotive lean-burn engine: NOx storage and reduction catalyst” 1996. p. 63-69. disponible: https://doi.org/10.1016/0920-5861(95)00173-5