Adrian MAZILU, Veneția SANDU



An exergy model for naturally aspirated compression ignition engines has been validated with experimental data from a four-cylinder 3.92-litre engine testing on a dynamometric test bed. For full load, in two engine operation modes at rated speed and maximum torque speed, the influence of the atmospheric pressure and temperature factors on the main exergy terms was investigated, as well as that of the compression ratio and excess air coefficient. The results indicate the paths to reduce exergy destruction by means of engine design and operation parameters.

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J. B. Heywood, Internal Combustion Engine Fundamentals. McGraw-Hill Education, New York, 1988.

C. D. Rakopoulos, E. G. Giakoumis, Second-law analyses applied to internal combustion engines operation, Progress in Energy and Combustion Science, vol. 32, pp. 2-47, 2006.

J. A. Caton, A review of investigations using the second law of thermodynamics to study internal-combustion engines, SAE transactions, pp. 1252-1266, 2000.

S. Kumar, W. Minkowycz, K. Patel, Thermodynamic cycle simulation of the diesel cycle: exergy as a second law analysis parameter, International Communications in Heat and Mass Transfer, vol. 16, pp. 335-346, 1989.

C. Rakopoulos, E. Andritsakis, DI and IDI diesel engines combustion irreversibility analysis,1993, dspace.lib.ntua.gr.

C. Rakopoulos, E. Andritsakis, D. Kyritsis, Availability accumulation and destruction in a DI diesel engine with special reference to the limited cooled case, Heat Recovery Systems and CHP, vol. 13, pp. 261-276, 1993.

C. Rakopoulos, E. Giakoumis, Simulation and exergy analysis of transient diesel-engine operation, Energy, vol. 22, pp. 875-885, 1997.

Road Vehicle Institute Brasov, Engine homologation standard 392-L4-D/DT/DTI, 1998.

V. Radcenco, Termodinamică tehnică şi maşini termice. Procese ireversibile, Ed. Tehnica, Bucureşti, 1976.

V. Sandu, A. Mazilu, Assessment of Internal Combustion Engine Exergy Based on Theoretical Cycles and Experimental Data, TEM Journal, vol. 8, p. 1277, 2019.

V. Radcenco, Criterii de optimizare a proceselor termice (ireversibile),Ed.D.P. Bucureşti, 1977.

H. Caliskan, M. E. Tat, A. Hepbasli, Performance assessment of an internal combustion engine at varying dead (reference) state temperatures, Applied Thermal Engineering, vol. 29, pp. 3431-3436, 2009.

D. C. Kyritsis, C. D. Rakopoulos, Parametric study of the availability balance in an internal combustion engine cylinder, SAE Technical Paper 0148-7191, 2001.


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