A New Methodology to Evaluate Engine Ignition Systems in High Density Conditions

Abstract

In this research, a new methodology to evaluate the operation of spark ignition systems in high density conditions is presented. New requirements in engines and new combustion modes demand more from these systems. One of the most important new requirements is the increase in density. Thus, a better understanding of the effects of high density and the behavior of the ignition system in these conditions seems necessary. To carry out this work two experimental facilities have been used: a transparent constant volume vessel, and an optical engine to simulate real engine conditions. Thus, the study combines the electrical signals derivate parameters and images obtained with a high speed camera. The methodology has been applied for different cases of pressure, intake temperature, and other parameters that affect the density. Results show that an increase in density causes a decrease in integrated power. Additionally, the dispersion in this integrated power increases too. Finally, the methodology results offer a useful data base for the engineers willing to improve the design of the ignition system. Moreover, it is validated that the results of the ambient transparent constant volume vessel follow the same trends and values as the realistic ones.Payri Marín, R.; Novella Rosa, R.; García Martínez, A.; Domenech Llopis, V. (2014). A New Methodology to Evaluate Engine Ignition Systems in High Density Conditions. Experimental Techniques. 38(3):17-28. doi:10.1111/j.1747-1567.2012.00818.xS1728383Banco , G. An Analysis of the Federal Government's Role in the Research and Development of Clean Diesels in the United States 2004Benajes, J., Novella, R., García, A., & Arthozoul, S. (2009). Partially Premixed Combustion in a Diesel Engine Induced by a Pilot Injection at the Low-pressure Top Dead Center. Energy & Fuels, 23(6), 2891-2902. doi:10.1021/ef900034yBenajes, J. V., López, J. J., Novella, R., & García, A. (2008). ADVANCED METHODOLOGY FOR IMPROVING TESTING EFFICIENCY IN A SINGLE-CYLINDER RESEARCH DIESEL ENGINE. Experimental Techniques, 32(6), 41-47. doi:10.1111/j.1747-1567.2007.00296.xZhao, F., Lai, M.-C., & Harrington, D. . (1999). Automotive spark-ignited direct-injection gasoline engines. Progress in Energy and Combustion Science, 25(5), 437-562. doi:10.1016/s0360-1285(99)00004-0Saitzokoff , A. Reinmann , R. Berglind , T. Glavmo , M. An Ionization Equilibrium Analysis of the Spark Plug an Ionization Sensor 1996Chung , S.S. Ha , J.-Y. Park , W.Y. Lee , M.-J. A Study on a Spark Plug for Charging of Stratified Mixture in a Local Area 2003Kondo , N. Suzuki , T. Sakakura , Y. Yamada , T. Combustion Monitoring by use of the Spark Plug for DI Engine 2001Shimanokami , Y. Matsubara , Y. Suzuki , T. Matsutani , W. Development of High Ignitability with Small Size Spark Plug 2004Lee , M.-J. Hall , M. Ofodike , A.E. Matthews , R. Voltage, and Energy Depositation Characteristics of Spark Ignition SystemsPayri, R., Salvador, F. J., Gimeno, J., & Soare, V. (2005). Determination of diesel sprays characteristics in real engine in-cylinder air density and pressure conditions. Journal of Mechanical Science and Technology, 19(11), 2040-2052. doi:10.1007/bf02916497Lapuerta, M., Armas, O., & Hernández, J. J. (1999). Diagnosis of DI Diesel combustion from in-cylinder pressure signal by estimation of mean thermodynamic properties of the gas. Applied Thermal Engineering, 19(5), 513-529. doi:10.1016/s1359-4311(98)00075-