Analysis of Transition from HCCI to CI via PPC with Low Octane Gasoline Fuels Using Optical Diagnostics and Soot Particle Analysis
Published October 8, 2017 by SAE International in United States
Downloadable datasets for this paper availableAnnotation of this paper is available
In-cylinder visualization, combustion stratification, and engine-out particulate matter (PM) emissions were investigated in an optical engine fueled with Haltermann straight-run naphtha fuel and corresponding surrogate fuel. The combustion mode was transited from homogeneous charge compression ignition (HCCI) to conventional compression ignition (CI) via partially premixed combustion (PPC). Single injection strategy with the change of start of injection (SOI) from early to late injections was employed. The high-speed color camera was used to capture the in-cylinder combustion images. The combustion stratification was analyzed based on the natural luminosity of the combustion images. The regulated emission of unburned hydrocarbon (UHC), carbon monoxide (CO) and nitrogen oxides (NOX) were measured to evaluate the combustion efficiency together with the in-cylinder rate of heat release. Soot mass concentration was measured and linked with the combustion stratification and the integrated red channel intensity of the high-speed images for the soot emissions. The nucleation nanoscale particle number and the particle size distribution were sampled to understand the effect of combustion mode switch.
- Yanzhao An - King Abdullah University of Science & Tech
- R Vallinayagam - King Abdullah University of Science & Tech
- S Vedharaj - King Abdullah University of Science & Tech
- Jean-Baptiste Masurier - King Abdullah University of Science & Tech
- Alaaeldin Dawood - King Abdullah University of Science & Tech
- Mohammad Izadi Najafabadi - Technische Universiteit Eindhoven
- Bart Somers - Eindhoven University of Technology
- Bengt Johansson - King Abdullah University of Science & Tech
CitationAn, Y., Vallinayagam, R., Vedharaj, S., Masurier, J. et al., "Analysis of Transition from HCCI to CI via PPC with Low Octane Gasoline Fuels Using Optical Diagnostics and Soot Particle Analysis," SAE Technical Paper 2017-01-2403, 2017, https://doi.org/10.4271/2017-01-2403.
Data Sets - Support Documents
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