Multi-point ignition of air/fuel mixture by the initiated subcritical streamer discharge

2021 ◽  
Author(s):  
Pavel Bulat ◽  
Pavel Chernyshov ◽  
Igor Esakov ◽  
Lev Grachev ◽  
Pavel Lavrov ◽  
...  
Keyword(s):  
Fuel Mixture ◽  
Streamer Discharge

scholarly journals Сравнение энергетической эффективности воспламенения топливной смеси искровым и стримерным разрядами

2021 ◽  
Vol 47 (15) ◽  
pp. 51
Author(s):  
П.В. Булат ◽  
К.Н. Волков ◽  
Л.П. Грачев ◽  
И.И. Есаков ◽  
П.Б. Лавров ◽  
...  
Keyword(s):  
Energy Efficiency ◽  
Power Plants ◽  
Fuel Efficiency ◽  
Fuel Mixture ◽  
Comparative Assessment ◽  
The Other ◽  
Computational Experiments ◽  
Streamer Discharge ◽  
Combustion Processes ◽  
Pulsed Spark Discharge

An increase in fuel efficiency and efficiency of combustion processes in power plants is discussed based on the data of physical and computational experiments. Two systems for ignition of a fuel mixture are considered, one of which uses a multi-point pulsed spark discharge, and the other uses a multipoint streamer discharge. A comparative assessment of the energy efficiency of each approach to the ignition of the air/fuel mixture is carried out, and conclusions are drawn about their effectiveness and prospects for use.

scholarly journals Ignition and combustion of air/fuel mixture in a long tube induced by microwave subcritical streamer discharge

2019 ◽  
Vol 163 ◽  
pp. 33-43 ◽  
Author(s):  
M.P. Bulat ◽  
P.V. Bulat ◽  
P.V. Denissenko ◽  
I.I. Esakov ◽  
L.P. Grachev ◽  
...  
Keyword(s):  
Fuel Mixture ◽  
Streamer Discharge ◽  
Ignition And Combustion

Effect of Chemical Hythane Composition on Pressure in Combustion Chamber of Engine

2019 ◽  
pp. 36-42
Author(s):  
A. P. Shaikin ◽  
I. R. Galiev
Keyword(s):  
Natural Gas ◽  
Combustion Chamber ◽  
Power Plants ◽  
Engine Speed ◽  
Combustion Engine ◽  
Fuel Mixture ◽  
Maximum Pressure ◽  
Chamber Volume ◽  
Excess Air ◽  
Scientific Papers

The article analyzes the influence of chemical composition of hythane (a mixture of natural gas with hydrogen) on pressure in an engine combustion chamber. A review of the literature has showed the relevance of using hythane in transport energy industry, and also revealed a number of scientific papers devoted to studying the effect of hythane on environmental and traction-dynamic characteristics of the engine. We have studied a single-cylinder spark-ignited internal combustion engine. In the experiments, the varying factors are: engine speed (600 and 900 min-1), excess air ratio and hydrogen concentration in natural gas which are 29, 47 and 58% (volume).The article shows that at idling engine speed maximum pressure in combustion chamber depends on excess air ratio and proportion hydrogen in the air-fuel mixture – the poorer air-fuel mixture and greater addition of hydrogen is, the more intense pressure increases. The positive effect of hydrogen on pressure is explained by the fact that addition of hydrogen contributes to increase in heat of combustion fuel and rate propagation of the flame. As a result, during combustion, more heat is released, and the fuel itself burns in a smaller volume. Thus, the addition of hydrogen can ensure stable combustion of a lean air-fuel mixture without loss of engine power. Moreover, the article shows that, despite the change in engine speed, addition of hydrogen, excess air ratio, type of fuel (natural gas and gasoline), there is a power-law dependence of the maximum pressure in engine cylinder on combustion chamber volume. Processing and analysis of the results of the foreign and domestic researchers have showed that patterns we discovered are applicable to engines of different designs, operating at different speeds and using different hydrocarbon fuels. The results research presented allow us to reduce the time and material costs when creating new power plants using hythane and meeting modern requirements for power, economy and toxicity.

Effects of initial temperature on ignition and flame propagation of dual-fuel mixture in mixing layer

2021 ◽  
Vol 225 ◽  
pp. 468-484
Author(s):  
Xiaojun Zhang ◽  
Chengwei Yuan ◽  
Lei Zhou ◽  
Wanhui Zhao ◽  
Zongkuan Liu ◽  
...  
Keyword(s):  
Flame Propagation ◽  
Initial Temperature ◽  
Mixing Layer ◽  
Fuel Mixture ◽  
Dual Fuel

scholarly journals Heating of the fuel mixture due to viscous stress ahead of accelerating flames in deflagration-to-detonation transition

2008 ◽  
Vol 372 (27-28) ◽  
pp. 4850-4857 ◽  
Author(s):  
Damir Valiev ◽  
Vitaly Bychkov ◽  
V'yacheslav Akkerman ◽  
Lars-Erik Eriksson ◽  
Mattias Marklund
Keyword(s):  
Fuel Mixture ◽  
Viscous Stress ◽  
Deflagration To Detonation Transition ◽  
Detonation Transition

Characteristics of streamer discharge development between the dielectric-coated sphere-plane electrodes in water

2008 ◽  
Vol 104 (11) ◽  
pp. 113302 ◽  
Author(s):  
Taiyun Zhu ◽  
Lanjun Yang ◽  
Zhijie Jia ◽  
Qiaogen Zhang
Keyword(s):  
Streamer Discharge

A method of water-bloom prevention using underwater pulsed streamer discharge

2008 ◽  
Vol 43 (10) ◽  
pp. 1209-1214 ◽  
Author(s):  
Zi Li ◽  
Takeshi Ohno ◽  
Hiroshi Sato ◽  
Takashi Sakugawa ◽  
Hidenori Akiyama ◽  
...  
Keyword(s):  
Water Bloom ◽  
Streamer Discharge ◽  
Pulsed Streamer Discharge
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