In this tenth installment of a 14-part series of monthly articles, The Combustion Institute recognizes the 2017 Distinguished Papers selected from among the scientific papers presented during the 36th International Symposium on Combustion. Congratulations to J. Bode, J. Schorr, C. Krüger, A. Dreizler, and B. Böhm for winning the DPA in the IC Engine Combustion colloquium.

The authoritative paper, Influence of three-dimensional in-cylinder flows on cycle-to-cycle variations in a fired stratified DISI engine measured by time-resolved dual-plane PIV, explores an improved understanding of the mechanisms of the IC-engine combustion, specifically the three-dimensional in-cylinder flow and its influence on cycle-to-cycle variations (CCVs) in a fired, direct-injection, spray-guided, spark-ignition engine.

The direction of the scientific team’s research is to develop combustion strategies for reduced CO2 emissions. A central limitation for the utilization of the efficiency-potentials of an IC-engine are the CCVs. By identifying the causes for such variations, it is possible to overcome these limitations.

The immediate impact of research in the paper shows a significant correlation between large-scale-flow structures and combustion-efficiency. Furthermore, 3D-flow characteristics could be identified as the cause for CCVs of the flow field. The scientific team’s findings prove on comprehensive databases that the fluctuations of three dimensional large scale structures of the in-cylindrical flow fields are a major cause for CCVs. Therefore, a specific modification of the flow field could lead to reduced variations.

In the long-term, the research findings can be used for systematic optimization of engine geometry to provide favorable flow conditions. Under these conditions, combustion strategies with considerable reduced CO2 and pollutant emissions could be enabled.

The major beneficiaries of the scientific team’s research are IC-Engine manufacturers, mainly because the findings can be used for engine-design optimization, in order to pass on the benefits of these combustion strategies that reduce health and environmental hazards. Furthermore, the applied methods the scientific team developed can be transferred to other applications in the fields of combustion research.

The paper’s research was mainly conducted at Daimler AG in Stuttgart, Germany, and also at the Technische Universität Darmstadt, Germany. The preparations for the experiments began in August 2014 and the work for the paper was completed in December 2015.

About 1,300 papers were submitted to the 36th Symposium in 14 combustion science colloquia. Those papers were categorized by teams of colloquium coordinators and co-chairs, and then distributed to approximately 1,000 scientific reviewers. One paper in each discipline was awarded the recognition of Distinguished Paper.

The 14 Distinguished Papers undergo committee review for consideration to receive the Silver Combustion Medal that will be awarded during the 37th Symposium in Dublin, Ireland. A paper selected for this honor exemplifies quality, achievement, and significance to advance a field of combustion science. Distinguished papers are selected biennially from among the scientific papers presented during the International Symposium on Combustion and accepted for publication in the Proceedings of The Combustion Institute.

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