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Journal of Thermodynamics
Volume 2010 (2010), Article ID 789262, 39 pages
http://dx.doi.org/10.1155/2010/789262
Review Article

Potential of Porous-Media Combustion Technology as Applied to Internal Combustion Engines

Institute of Vehicle Technology (IFZN), Faculty of Mechanical Engineering, Georg Simon Ohm University of Applied Sciences Nuremberg, Kesselrplatz 12, 90489 Nuremberg, Germany

Received 7 April 2010; Revised 27 October 2010; Accepted 18 November 2010

Academic Editor: L. P. H. De Goey

Copyright © 2010 Miroslaw Weclas. 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.

Abstract

The paper summarizes the knowledge concerning porous media combustion techniques as applied in engines. One of most important reasons of this review is to introduce this still not well known technology to researchers doing with internal combustion engine processes, thermal engines, reactor thermodynamics, combustion, and material science. The paper gives an overview of possible applications of a highly porous open cell structures to in-cylinder processes. This application means utilization of unique features of porous media for supporting engine processes, especially fuel distribution in space, vaporization, mixing with air, heat recuperation, ignition and combustion. There are three ways for applying porous medium technology to engines: support of individual processes, support of homogeneous combustion process (catalytic and non-catalytic) with temperature control, and utilization of the porous structure as a heat capacitor only. In the first type of application, the porous structure may be utilized for fuel vaporization and improved fuel distribution in space making the mixture more homogeneous in the combustion chamber. Extension of these processes to mixture formation and ignition inside a combustion reactor allows the realization of a homogeneous and a nearly zero emissions level combustion characterized by a homogeneous temperature field at reduced temperature level.