Optical Diagnostics in Combustion

Internal Combustion Engine

Performance and operation of engines during cold-start/warm-up
Cold-engine friction characteristics
Control of emissions to within limits permitted by European and other International standards
Development of the new low carbon engine technologies
Development of computer aided engineering tools based on computational and analytical models
Optical analysis of combustion characteristics

Spray characterization

Spray characterization remains as an important component of research and development for advanced energy conversion systems. In these environments, the sprays are generally associated with complexities such as turbulent flows, drop collisions, secondary break-up, evaporation, material changes in the droplets, evaporation and condensation, combustion-generated particulate, and thermally-induced refractive index fluctuations. Complete characterizations of spray systems are difficult. In our lab, we are committed to report information on the internal flow of the atomization system, liquid discharge characteristics, sheet thickness, velocity, cone angle, and sheet break-up mechanisms may be of interest.

Imaging

Imaging is an important aspect of optical diagnostics. We are constantly applying ourselves to the generation of novel methodologies, hardware and processing techniques for enhanced image formation. Research is focused to improve spatial and temporal resolution, acquiring data from a wide range of processes and is applied acoss a broad variety of specimens.

Nanoparticles

Particulate Matter (soot) emitted by internal combustion engines poses a real threat for human health and the environment; it also affects engine durability and oil change intervals.

The understanding of exhaust and soot-in-oil characteristics and the effects of particular matter on oil properties is investigated by using specific and powerful diagnostic techniques; the nanosize scale and oil environment make the investigation highly challenging.

New characterisation tools have been developed by the group allowing for insight into the fundamental understanding of soot-in-oil morphology, transfer mechanisms and agglomerate behaviour in lubricant oil.

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