The major strategic goals of my research is to improve the efficiency and reduce emissions from combustion engines. My research focus on Diesel and Gasoline Engine combustion (HCCI/PPC/GCI-gasoline compression ignition) optical diagnostics; Experimental study the effects of fuel properties and control strategies on combustion and emissions of engines; Fuel surrogates and alternative fuels, mainly focus on heavy naphtha and light naphtha; Chemical kinetics and reaction mechanisms and their applications in advanced engine combustion simulations;Combustion simulation and optimization with both conventional and renewable fuels; Numerical study of the soot particle precursors and soot particle formation processes

• Numerical simulation of combustion and soot under partially premixed combustion of low-octane gasoline
  Y. An, M. Jaasim, R. Vallinayagam, S. Vedharaj, H. G. Im, B. Johansson
  Fuel 211, 420-431, (2018)
• In-cylinder Combustion and Soot Evolution in the Transition from Conventional CI mode to PPC
  Y. An, M. Jaasim, R. Vallinayagam, S. Vedharaj, H. G. Im, B. Johansson.
  Energy Fuels 32 (2), 23062320, (2018)
• Naphtha Vs. Dieseline -The effect of fuel properties on combustion homogeneity in transition from CI combustion tow...
  R. Vallinayagam, Y. An, S. Vedharaj, B. Johansson
  Fuel 224, 451-460, (2018)
• HCCI and PPC Mode Combustion in Compression Ignition Engine with Low Octane Gasoline
  Y. An, M. Jaasim, F. H. Pérez, R. Vallinayagam, H. G. Im, B. Johansson
  Energy, (2018)
• Investigation of Premix and Diffusion Flames in PPC and CI Combustion Modes
  Y. An, R. Vallinayagam, S. Vedharaj, J. Chang, B. Johansson
  SAE Technical Paper, 2018-01-0899, (2018)
• Analysis of transition from HCCI to CI via PPC with low octane gasoline fuels using optical diagnostics and soot pa...
  Y. An, R. Vallinayagam, S. Vedharaj, A. Dawood, J.-B. Masurier, M. I. Najafabadi, B. Somer...
  SAE Technical paper, 2017-01-2403, (2018)
• Development of a PAH (polycyclic aromatic hydrocarbon) formation model for gasoline surrogates and its application ...
  Yanzhao An, Yiqiang Pei, Zhao, Hua, et al.
  Energy, 94, 367-379, (2016)
• An experimental study of polycyclic aromatic hydrocarbons and soot emissions from a GDI engine fueled with commerci...
  Yanzhao An, Yiqiang Pei, Zhao, Hua, et al.
  Fuel, 164, 160-171, (2016)
• Development of a Soot particle Model with PAHs as Precursors by Simulation and Experiment.
  Yanzhao An, Yiqiang Pei, Zhao, Hua, et al.
  Fuel, 179, 246-257, (2016)
• Kinetic modeling of polycyclic aromatic hydrocarbons formation process for gasoline surrogate fuels.
  Yanzhao An, Yiqiang Pei, Zhao, Hua, et al.
  Energy Conversion and Management, 100, 249-261, (2015) 

• Ph.D   Power Machinery and Engineering.  State Key Laboratory of Engines, Tianjin University. Tianjin, China. 2016
• M.S.   Power Machinery and Engineering.  College of Mechanical Engineering, Guangxi University. Nanning, China. 2012
• B.A   Vehicle engineering, Central South University of Forestry and Technology, Changsha, China.

• ​Clean Combustion Research Center (CCRC)
• Physical Sciences and Engineering ( PSE )