@techreport{Weclas2005, author = {Weclas, Miroslaw}, title = {Potential of porous medium combustion technology as applied to internal combustion engines}, url = {http://nbn-resolving.de/urn:nbn:de:bvb:92-opus-298}, year = {2005}, abstract = {The paper describes application of a highly porous open cell structures to internal combustion engines for supporting mixture formation and combustion processes. Porous structures, materials and their properties for engine application are discussed in this paper. Especially application to a high temperature combustion processes are considered. Novel concepts for internal combustion engines based on the application of porous medium technology are presented and discussed. The main attention is focused on the engine concepts having potential for homogeneous (nerly emissions free) combustion process under variable engine operational conditions. It is shown that porous media can be used for a great variety of improvements in the combustion process. The key role for NOx reduction and soot emission ellimination is a homogeneous combustion in engine. This can be realised by homogeneous mixture formation, and a 3D ignition preventing from formation of a flame front having a temperature gradient a in the entire combustion volume. All these processes: gas flow, fuel injection and its spatial distribution, vaporization, mixture homogenization, ignition and combustion can be controlled or positively influenced with the help of porous media/ceramic reactors.}, subject = {Verbrennungsmotor}, language = {en} } @techreport{Weclas2004, author = {Weclas, Miroslaw}, title = {Strategy for intelligent internal combustion engine with homogenous combustion in cylinder}, url = {http://nbn-resolving.de/urn:nbn:de:bvb:92-opus-235}, year = {2004}, abstract = {In this report the author proposes strategy for development of intelligent combustion systems with a goal to approach a near-zero emission internal combustion engine operating in a wide range of speeds and loads. Main requirement for future I.C. engine is to develop a system permitting homogeneous combustion process (minimum of engine emissions) under all operational conditions. The author suggests, that none existing individual combustion system may satisfy these conditions. However, combination of different individual combustion modes in a one system may permit homogeneous combustion in a wider range of loads. Such combination of individual systems having potential for a homogeneous combustion and operating in different ranges of engine loads is here defined as an intelligent engine. In order to make this strategy practicable a new concept for mixture formation (MDI-Mixture Direct Injection) and homogeneous combustion based on the Porous Medium (PM)- technology is proposed in this paper. This is probably first publication indicating possibility of developing of intelligent combustion systems in engines. This paper concentrates on MDI system that may adopt an actual combustion mode realizing in engine (i.e. ignition and combustion conditions) to actual engine operational conditions}, subject = {Verbrennungsmotor}, language = {en} }