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Identification of Potential Efficiency Opportunities in Internal Combustion Engines Using a Detailed Thermodynamic Analysis of Engine Simulation Results
ISSN: 0148-7191, e-ISSN: 2688-3627
Published April 14, 2008 by SAE International in United States
Annotation ability available
Current political and environmental concerns are driving renewed efforts to develop techniques for improving the efficiency of internal combustion engines. A detailed thermodynamic analysis of an engine and its components from a 1st and 2nd Law perspective is necessary to characterize system losses and to identify efficiency opportunities. We have developed a method for performing this analysis using simulation results from commercially available engine-modeling software packages such as WAVE® from Ricardo, Inc., and GT-Power™ from Gamma Technologies, Inc. Results from the simulation are post-processed to compute thermodynamic properties such as internal energy, enthalpy, entropy, and availability (or exergy) which are required to perform energy and availability balances for the system. This analysis is performed for all major engine components (turbocharger, intercooler, EGR cooler, etc.) and for the engine as a whole as a function of crank angle over an entire engine cycle. With this information, we are able to identify potential efficiency opportunities as well as guide engine experiments for exploring new technologies for recovering system losses.
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CitationEdwards, K., Wagner, R., and Graves, R., "Identification of Potential Efficiency Opportunities in Internal Combustion Engines Using a Detailed Thermodynamic Analysis of Engine Simulation Results," SAE Technical Paper 2008-01-0293, 2008, https://doi.org/10.4271/2008-01-0293.
- Primus RJ 1984 “A Second Law Approach to Exhaust System Optimization” SAE 840033
- Alkidas AC 1988 “The Application of Availability and Energy Balances to a Diesel Engine” ASME Journal of Engineering for Gas Turbines and Power 110 462 469
- Caton JA 2001 “A Review of Investigations Using the Second Law of Thermodynamics to Study Internal Combustion Engines” SAE 2001-01-1081
- Caton JA 2002 “A Cycle Simulation Including the Second Law of Thermodynamics for a Spark-ignition Engine: Implications of the Use of Multiple Zones for Combustion” SAE 2002-01-0007
- Kyritsis DC Rakopoulos CD 2001 “Parametric Study of the Availability Balance in an Internal Combustion Engine Cylinder” SAE 2001-01-1263
- Farrell JT Stevens JG Weissman W 2006 “A Second Law Analysis of High Efficiency Low Emission Gasoline Engine Concepts” SAE 2006-01-0491
- Sayin C Hosoz M Canakci M Kilicaslan I 2007 “Energy and Exergy Analyses of a Gasoline Engine” International Journal of Energy Research 31 259 273
- WAVE Ricardo, Inc. www.ricardo.com/software
- GT-Power Gamma Technologies, Inc. www.gtisoft.com
- Chase, MW Jr. 1998 NIST-JANAF Thermochemical Tables 4th Journal of Physical and Chemical Reference Data, Monograph 9 1 1951 webbook.nist.gov/chemistry
- Bejan A Tsatsaronis G Moran M 1996 Thermal Design and Optimization John Wiley & Sons, Inc. 0-471-58467-3
- Ahrendts J 1977 “Die Exergie Chemisch Reaktionsfähiger Systeme” VDI-Forschungsheft VDI-Verlag Düsseldorf Report No. 579 26 33
- Rodríguez L 1980 “Calculation of Available-Energy Quantities” Thermodynamics - Second Law Analysis American Chemical Society Symposium Series No. 122 39 59
- Dunbar WR Lior N 1994 “Sources of Combustion Irreversibility” Combustion Science and Technology 103 41 61