The Mechanism of Controlled Auto-Ignition

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Technical Lecture
25 January 2011 19:00 - 21:30
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Controlled Auto-Ignition (CAI) or Homogeneous Charge Compression Ignition (HCCI) combustion is a combustion process which utilises homogeneous air/fuel mixture, but combustion is initiated by fuel self-ignition. It therefore combines features of both SI and CI combustion. During compression process, local in-homogeneity results in non-unified temperature throughout combustion chamber. When hotter parts overcome their activation energies, combustion in these parts starts. Energy extherm heats the remaining charge, then full-scale ignition is established. Time required for overall combustion reaction is merely a fraction of conventional SI combustion. It leads to a number of potential advantages regarding emissions and fuel efficiency, and difficulties in terms of control and load output range. Both will be discussed in the lecture.


Perkins Auditorium
Vicarage Farm Road
United Kingdom

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