Characterization of Glow Plug and HCCI Combustion Processes in a Small Volume at High Engine Speed - Load Range, Emission Characteristics and Optical Diagnostics

Research output: ThesisLicentiate Thesis


The objective of this research that has taken me halfway to my PhD degree was
to understand how HCCI combustion behaves in a small volume at high
rotational speed. The investigation has been carried out using a modified model
airplane engine. The whole study can be divided into two main parts; in the first,
the nature of the glow plug combustion was investigated through experiments on
a metal engine and by use of optical diagnostics. Once the glow plug combustion
process was fully understood, the engine was modified in order to achieve pure
HCCI operations. Initially, a basic investigation was carried out using a metal and
optical engine. Later, further research was performed on the main parameters
affecting HCCI operations in such a small volume, i.e. the quenching distance,
wall temperature and combustion chamber geometry.
In addition to these studies, a model for calculating the amount of retained gas in
a 2-stroke engine was developed and a miniature HCCI free piston engine was
designed from scratch.


  • Vittorio Manente
Research areas and keywords

Subject classification (UKÄ) – MANDATORY

  • Other Mechanical Engineering


  • optical diagnostics, millidomain combustion, HCCI, high speed
Original languageEnglish
Awarding Institution
Supervisors/Assistant supervisor
  • Lund University
Publication statusPublished - 2007
Publication categoryResearch

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