Historically, a succession of thermodynamic processes has been used to idealize the operating cycles of internal combustion engines. In this study, the 256 possible combinations of four reversible processes—isentropic, isothermal, isochoric, and isobaric—are surveyed in search of cycles promising superior thermal efficiency. Regenerative cycles are excluded. The established concept of the air-standard cycle, which mimics the internal combustion engine as a closed-cycle heat engine, is used to narrow the field systematically. The approach relies primarily on graphical interpretation of approximate temperature-entropy diagrams and is qualitative only. In addition to identifying the cycles offering the greatest efficiency potential, the compromise between thermal efficiency and mean effective pressure is addressed.
Applying Thermodynamics in Search of Superior Engine Efficiency
Contributed by the Internal Combustion Engine Division of THE AMERICAN SOCIETY OF MECHANICAL ENGINEERS for publication in the ASME JOURNAL OF ENGINEERING FOR GAS TURBINES AND POWER. Manuscript received by the ICE Division, January 2, 2003; final revision received March 26, 2004. Associate Editor: D. Assanis.
- Views Icon Views
- Share Icon Share
- Cite Icon Cite
- Search Site
Amann, C. A. (June 24, 2005). "Applying Thermodynamics in Search of Superior Engine Efficiency ." ASME. J. Eng. Gas Turbines Power. July 2005; 127(3): 670–675. https://doi.org/10.1115/1.1804537
Download citation file:
- Ris (Zotero)
- Reference Manager