A study of homogeneous ignition and combustion processes in CI, SI, and HCCI engine systems

2021 ◽  
Author(s):  
Jincai Zheng
Keyword(s):  
Hcci Engine ◽  
Ignition And Combustion ◽  
Combustion Processes ◽  
Engine Systems

scholarly journals Ignition of Slurry Fuel Droplets with Different Heating Conditions

Energies ◽  
2019 ◽  
Vol 12 (23) ◽  
pp. 4553
Author(s):  
Timur Valiullin ◽  
Ksenia Vershinina ◽  
Pavel Strizhak
Keyword(s):  
Heat Fluxes ◽  
Radiative Heating ◽  
Convective Heating ◽  
Radiation Heating ◽  
Fuel Droplets ◽  
Ignition Delay Times ◽  
Delay Times ◽  
Ignition And Combustion ◽  
Combustion Processes ◽  
Hot Surface

This paper describes modern research methods of the ignition and combustion processes of slurry fuel droplets. The experiments were carried out using a muffle furnace to ensure the conditions of radiation heating, the hot surface to reproduce the conditions of conductive heating, the high-temperature channel with convective heating, the chamber with the processes of soaring, i.e., a significant increase in the time of fuel residence in the combustion chamber. We identified the differences in combustion modes, threshold ignition temperatures, delay times and durations of combustion processes. We obtained the quantitative differences in the characteristics of the ignition and combustion processes for typical registration methods. It was found that for all heating schemes, the minimum ignition temperatures have comparable values. Minimum ignition delay times were recorded during convective heating. The maximum combustion temperatures were achieved with radiation heating. We determined the values of limiting heat fluxes, sufficient to initiate the combustion of slurries fuels during conductive, convective and radiative heating.

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