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An Approach to Recover IC Engine Exhaust Gas Energy Based on Rankine Steam Cycle

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Abstract:

In order to improve the thermal efficiency of IC engine, also realize the aim of energy saving and emission reduction, an approach of IC engine exhaust gas energy recovery was proposed based on Rankine steam cycle and the thermodynamic processes were studied. Firstly, according to exhaust gas characteristics of a passenger car engine, the bottom cycle model was established. Then, the test data of IC engine exhaust gas were taken as bottom cycle boundary conditions, and cycle processes were calculated by using the method of subsection interpolation fitting on computer. Next, the relationship among system performance and design parameters as well as operating parameters was studied. Finally, the theoretical limit of exhaust gas energy recovery, as well as the advantages and disadvantages of applying this bottom cycle on recovering IC engine exhaust gas energy were elaborated. The results show that IC engine power and thermal efficiency can be theoretically improved by 9.7% and 27% respectively after using this bottom cycle system under common condition. All that can prove it is a new technology with lots of potential, and give a method to design the energy recovery system.

Keywords: BOTTOM CYCLE; ENERGY SAVING AND EMISSION REDUCTION; IC ENGINE; THERMAL EFFICIENCY; WASTE HEAT RECOVERY

Document Type: Research Article

DOI: http://dx.doi.org/10.1166/asl.2012.2212

Publication date: March 1, 2012

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  • ADVANCED SCIENCE LETTERS is an international peer-reviewed journal with a very wide-ranging coverage, consolidates research activities in all areas of (1) Physical Sciences, (2) Biological Sciences, (3) Mathematical Sciences, (4) Engineering, (5) Computer and Information Sciences, and (6) Geosciences to publish original short communications, full research papers and timely brief (mini) reviews with authors photo and biography encompassing the basic and applied research and current developments in educational aspects of these scientific areas.
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