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Entropy 2016, 18(4), 139; doi:10.3390/e18040139

Progress in Finite Time Thermodynamic Studies for Internal Combustion Engine Cycles

1,2,3
,
1,2,3,* and 1,2,3
1
Institute of Thermal Science and Power Engineering, Naval University of Engineering, Wuhan 430033, China
2
Military Key Laboratory for Naval Ship Power Engineering, Naval University of Engineering, Wuhan 430033, China
3
College of Power Engineering, Naval University of Engineering, Wuhan 430033, China
*
Author to whom correspondence should be addressed.
Academic Editor: Milivoje M. Kostic
Received: 31 January 2016 / Revised: 15 March 2016 / Accepted: 7 April 2016 / Published: 15 April 2016
(This article belongs to the Section Thermodynamics)

Abstract

On the basis of introducing the origin and development of finite time thermodynamics (FTT), this paper reviews the progress in FTT optimization for internal combustion engine (ICE) cycles from the following four aspects: the studies on the optimum performances of air standard endoreversible (with only the irreversibility of heat resistance) and irreversible ICE cycles, including Otto, Diesel, Atkinson, Brayton, Dual, Miller, Porous Medium and Universal cycles with constant specific heats, variable specific heats, and variable specific ratio of the conventional and quantum working fluids (WFs); the studies on the optimum piston motion (OPM) trajectories of ICE cycles, including Otto and Diesel cycles with Newtonian and other heat transfer laws; the studies on the performance limits of ICE cycles with non-uniform WF with Newtonian and other heat transfer laws; as well as the studies on the performance simulation of ICE cycles. In the studies, the optimization objectives include work, power, power density, efficiency, entropy generation rate, ecological function, and so on. The further direction for the studies is explored. View Full-Text
Keywords: finite time thermodynamics; internal combustion engine cycle; performance optimization; optimum piston trajectory; optimum control theory finite time thermodynamics; internal combustion engine cycle; performance optimization; optimum piston trajectory; optimum control theory
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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Ge, Y.; Chen, L.; Sun, F. Progress in Finite Time Thermodynamic Studies for Internal Combustion Engine Cycles. Entropy 2016, 18, 139.

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