My research interests focus on the novel high-efficiency and clean engine combustion concepts, like partially premixed combustion (PPC), reactivity-controlled compression ignition (RCCI), isobaric combustion, and prechamber combustion (PCC). I also strive to investigate the engine knocking combustion and detonation using multiple optical diagnostics. I have rich experience in operating and designing optical engines and implementing state-of-art laser diagnostic techniques like planar laser-induced fluorescence (PLIF) imaging, laser-induced incandescence (LII), and 2-D spontaneous Raman scattering (SRS) imaging. I can apply the high-speed laser (10-100 kHz, QuasiModo) to measure the time-resolved PLIF, PLII, and particle imaging velocimetry (PIV). I endeavor to gain knowledge of the fundamental combustion theory of power machinery and advance the application of high-efficiency and clean combustion technologies.

• A review on combustion rate control, spray-wall impingement, and CO/UHC formation of the gasoline compression ignition engines
  Q. Tang, B. Johansson
  Book Title: Gasoline Compression Ignition Technology, Chapter 4, pp. 73-97, (2022)
  
  
• Study on the effects of narrow-throat pre-chamber geometry on the pre-chamber jet velocity using dual formaldehyde PLIF imaging
  Q. Tang, R. Sampath, P. Sharma, M.E. Marquez, E. Cenker, G. Magnotti
  Combustion and Flame 240, 111987, (2022)
  
  
• Optical diagnostics on the pre-chamber jet and main chamber ignition in the active pre-chamber combustion (PCC)
  Q. Tang, R. Sampath, M.E. Marquez, P. Sharma, P. Hlaing, M.B. Houidi, E. Cenker, J. Chang, G. Magnotti, B. Johansson
  Combustion and Flame 228, 218–235, (2021)
  
  
• Effects of fuel trapping in piston crevice on unburned hydrocarbon emissions in early-injection compression ignition engines
  Q. Tang, X. Liu, V. Raman, H. Shi, J. Chang, H.G. Im, B. Johansson
  Combustion and Flame 231, 111496, (2021)
  
  
• Optical diagnostics and multi-point pressure sensing on the knocking combustion with multiple spark ignition
  H. Shi, Q. Tang, K. Uddeen, G. Magnotti, J. Turner
  Combustion and Flame 236, (2022)
  
  
• Impact of spray-wall interaction on the in-cylinder spatial unburned hydrocarbon distribution of a gasoline partially premixed combustion engine
  V. Raman, Q. Tang, Y. An, H. Shi, P. Sharma, G. Magnotti, J. Chang, B. Johansson
  Combustion and Flame 215, 157-168, (2020)
  
  
• Effects of direct-injection fuel types and proportion on late-injection reactivity controlled compression ignition
  Q. Tang, H. Liu, X. Ran, M. Li, M. Yao
  Combustion and Flame 211, 445-455, (2020)
  
  
• Optical Study on the Fuel Spray Characteristics of the Four-Consecutive-Injections Strategy Used in High-Pressure Isobaric Combustion
  Q. Tang, R. Sampath, P. Sharma, G. Nyrenstedt, A. Al Ramadan, M. Ben Houidi, J. Badra, B. Johansson, G. Magnotti
  SAE Technical Paper 2020-01-1129, 2020
  
  
• Simultaneous negative PLIF and OH* chemiluminescence imaging of the gas exchange and flame jet from a narrow throat pre-chamber
  Q. Tang, R. Sampath, M. Echeverri Marquez, P. Hlaing, P. Sharma, M. Ben Houidi, E. Cenker, J. Chang, G. Magnotti, B. Johansson
  SAE Technical Paper 2020-01-2080, 2020. 

• Investigation on the dual-fuel active-thermal atmosphere combustion strategy based on optical diagnostics and numerical simulations
  Q. Tang, X. Liu, H. Liu, H. Wang, M. Yao
  Fuel 276 (2020)
  
  
• A comparative study of isobaric combustion and conventional diesel combustion in both metal and optical engines
  G. Nyrenstedt, Q. Tang, R. Sampath, A. AlRamadan, M. Ben Houidi, E. Cenker, G. Magnotti, B. Johansson
  Fuel 295 (2021)
  
  
• Experimental study on the effects of spray–wall interaction on partially premixed combustion and engine emissions
  Q. Tang, Y. An, V. Raman, H. Shi, J. Sim, J. Chang, G. Magnotti, B. Johansson
  Energy Fuel 33, 5673-5681, (2019)
  

• Ph.D. in Power Machinery and Engineering, State Key Laboratory of Engines, Tianjin University, Tianjin, China, 2017
  
• M.Eng. in Power Engineering, State Key Laboratory of Engines, Tianjin University, Tianjin, China, 2012​
  

• ​2017.9 - present: Postdoctoral fellow, King Abdullah University of Science and Technology, Thuwal, Saudi Arabia​

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