This content is not included in
your SAE MOBILUS subscription, or you are not logged in.
Cycle-to-Cycle Analysis of Swirl Flow Fields inside a Spark-Ignition Direct-Injection Engine Cylinder Using High-Speed Time-Resolved Particle Image Velocimetry
Technical Paper
2016-01-0637
ISSN: 0148-7191, e-ISSN: 2688-3627
Annotation ability available
Sector:
Language:
English
Abstract
The cycle-to-cycle variations of in-cylinder flow field represent a significant challenge which influence the stability, fuel economy, and emissions of engine performance. In this experimental investigation, the high-speed time-resolved particle image velocimetry (PIV) is applied to reveal the flow field variations of a specific swirl plane in a spark-ignition direct-injection engine running under two different swirl air flow conditions. The swirl flow is created by controlling the opening of a control valve mounted in one of the two intake ports. The objective is to quantify the cycle-to-cycle variation of in-cylinder flow field at different crank angles of the engine cycle. Four zones along the measured swirl plane are divided according to the positions of four valves in the cylinder head. The relevance index is used to evaluate the cycle-to-cycle variation of the velocity flow field for each zone. It is based on comparing the flow similarity of field fields of the same crank angle from different cycles. A comparison of relevance index for each zone between intake and compression strokes is made. The result shows the difference of cycle-to-cycle variation in each zone is affected by the motions of piston and intake valves. The cycle-to-cycle variations of flow field during intake stroke are higher than that during compression stroke, and the variations seem to be less pronounced under the high swirl condition where the flow is more directed in the cylinder.
Recommended Content
Authors
Citation
Wang, Y., Hung, D., Zhuang, H., and Xu, M., "Cycle-to-Cycle Analysis of Swirl Flow Fields inside a Spark-Ignition Direct-Injection Engine Cylinder Using High-Speed Time-Resolved Particle Image Velocimetry," SAE Technical Paper 2016-01-0637, 2016, https://doi.org/10.4271/2016-01-0637.Also In
References
- Sick V. High speed imaging in fundamental and applied combustion research Proceedings of the Combustion Institute 2013 34 2 3509 3530 10.1016/j.proci.2012.08.012
- Sick V. , Drake M. , Fansler T. High-speed imaging for direct-injection gasoline engine research and development Experiments in Fluids 2010 49 4 937 947 10.1007/s00348-010-0891-3
- Ceviz M. A. Intake plenum volume and its influence on the engine performance, cyclic variability and emissions Energy Conversion and Management 2007 48 3 961 966 10.1016/j.enconman.2006.08.006
- Semlitsch B. , Wang Y. , Mihăescu M. Flow effects due to valve and piston motion in an internal combustion engine exhaust port Energy Conversion and Management 2015 96 18 30 10.1016/j.enconman.2015.02.058
- Lee K. , Bae C. , Kang K. The effects of tumble and swirl flows on flame propagation in a four-valve S.I. engine Applied Thermal Engineering 2007 27 11 12 2122 2130 10.1016/j.applthermaleng.2006.11.011
- Porpatham E. , Ramesh A. , Nagalingam B. Effect of swirl on the performance and combustion of a biogas fuelled spark ignition engine Energy Conversion and Management 2013 76 463 471 10.1016/j.enconman.2013.07.071
- Hung D.L.S. , Chen H. , Xu M. , Zhuang H. , Yang J. Experimental Investigation of the Variations of Early Flame Development in a Spark-Ignition Direct-Injection Engine ASME Journal of Engineering for Gas Turbines and Power 136 101503 1 2014
- Zeng , W. , Sjöberg , M. , and Reuss , D. Using PIV Measurements to Determine the Role of the In-Cylinder Flow Field for Stratified DISI Engine Combustion SAE Int. J. Engines 7 2 615 632 2014 10.4271/2014-01-1237
- Zhuang H. , Hung D.L.S. , Chen H. Study of time-resolved vortex structure of in-cylinder engine flow fields using proper orthogonal decomposition technique Journal of Engineering for Gas Turbines and Power 2015 137 8 082604 10.1115/1.4029600
- Ozdor , N. , Dulger , M. , and Sher , E. Cyclic Variability in Spark Ignition Engines A Literature Survey SAE Technical Paper 940987 1994 10.4271/940987
- Hung , D. , Chmiel , D. , and Markle , L. Application of an Imaging-based Diagnostic Technique to Quantify the Fuel Spray Variations in a Direct-Injection Spark-Ignition Engine SAE Technical Paper 2003-01-0062 2003 10.4271/2003-01-0062
- Chen , H. , Xu , M. , and Hung , D. Analyzing In-cylinder Flow Evolution and Variations in a Spark-Ignition Direct-Injection Engine Using Phase-Invariant Proper Orthogonal Decomposition Technique SAE Technical Paper 2014-01-1174 2014 10.4271/2014-01-1174
- Chen H. , Hung D.L.S. , Xu M. , Zhuang H. , Yang J. Proper orthogonal decomposition analysis of fuel spray structure variation in a spark-ignition direct-injection optical engine Experiments in Fluids 2014 55 4 1 12 10.1007/s00348-014-1703-y
- Reuss , D. Cyclic Variability of Large-Scale Turbulent Structures in Directed and Undirected IC Engine Flows SAE Technical Paper 2000-01-0246 2000 10.4271/2000-01-0246
- Müller S. H. R. , Böhm B. , Gleißner M. , Grzeszik R. , Arndt S. , Dreizler A. Flow field measurements in an optically accessible, direct-injection spray-guided internal combustion engine using high-speed PIV Experiments in Fluids 2010 48 2 281 290 10.1007/s00348-009-0742-2
- Liu , K. and Haworth , D. Development and Assessment of POD for Analysis of Turbulent Flow in Piston Engines SAE Technical Paper 2011-01-0830 2011 10.4271/2011-01-0830
- Chen H. , Reuss D. , Sick V. Analysis of misfires in a direct injection engine using proper orthogonal decomposition Experiments in Fluids 2011 51 4 1139 1151 10.1007/s00348-011-1133-z