Abstract
A recently-developed, three-dimensional measurement approach for high-speed combustion visualisation has been applied to two different engine concepts. Three photomultiplier-based camera devices are linked with each other to simultaneously measure the ultraviolet combustion radiation in the engines from different viewing angles. The resulting two-dimensional images provide a basis for the subsequent reconstruction of 3D information on combustion phenomena. In this paper, we focus on the character of auto-ignition processes as they take place in Controlled Auto-ignition (CAI) engines as well as - unintentionally - in turbocharged spark-ignition engines with high compression ratios.
