Results 1 to 10 of about 56,122 (303)

On Lean Turbulent Combustion Modeling [PDF]

INCAS Bulletin, 2014
This paper investigates a lean methane-air flame with different chemical reaction mechanisms, for laminar and turbulent combustion, approached as one and bi-dimensional problem.
Constantin LEVENTIU, Sterian DANAILA
doaj   +2 more sources

Numerical investigation on different effects of recirculated species on UHC and CO formation during lean homogeneous combustion [PDF]

Scientific Reports
Although numerous studies have investigated the effect of EGR on engine combustion, no study has investigated the effect of each recirculated species separately on the engine emissions and combustion.
Salar Zeinali, Elaheh Neshat, Sevda Zalnezhad Mollayousefi   +2 more
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Study on SI Engine Operation Stability at Lean Condition—The Effect of a Small Amount of Hydrogen Addition

Energies, 2023
The lean-burn mode is a solution that reduces the fuel consumption of spark-ignition internal combustion engines and keeps the low exhaust emission, but the stability of the lean-burn combustion process, especially at low loads, needs to be addressed ...
Jacek Leyko, Kamil Słobiński, Jarosław Jaworski, Grzegorz Mitukiewicz, Wissam Bou Nader, Damian Batory   +5 more
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The Lean-Burn Limit Extending Experiment on Gasoline Engine with Dual Injection Strategy and High Power Ignition System

Energies, 2023
In the context of the energy crisis and global warming, improving thermal efficiency is the most important issue in research on gasoline engines, and lean mixture combustion strategy is becoming the most promising method.
Zhiqiang Li, Jing Qin, Yiqiang Pei, Kai Zhong, Zhiyong Zhang, Jian Sun   +5 more
doaj   +1 more source

Influence of fuel properties on knock under lean combustion conditions

Nihon Kikai Gakkai ronbunshu, 2021
Internal combustion engines today are required to provide even higher levels of thermal efficiency. Raising the compression ratio and applying lean combustion are effective measures for increasing the thermal efficiency of internal combustion engines ...
Teruhiko OTOKOZAWA, Takeshi NISHIYAMA, Akira IIJIMA   +2 more
doaj   +1 more source

Study on promotion of lean combustion by oxygen enrichment using a rapid compression expansion machine

Nihon Kikai Gakkai ronbunshu, 2021
While lean combustion in SI engine is one of the promising methods to increase the thermal efficiency and reduce the pollutant emissions, it causes instability of ignition and combustion due to the low burning velocity.
Kazuki HARADA, Shion ANDO, Yuya ITO, Yuzo KAWASOE, Hideki HASHIMOTO, Osamu MORIUE   +5 more
doaj   +1 more source

Experimental analysis and performance of refinery fuel gas on lean and rich fuel–air premixed combustion

Energy Reports, 2023
Refinery fuel gas (RFG) is a blend of gas streams produced as by-products in various refinery processes. Large amounts of RFG are burning around the clock in the air with thermal energy waste and adverse effects on the environment.
Matías Fierro, Nicolás Carmona, Mario Toledo   +2 more
doaj   +1 more source

An Experimental Study on the Combustion Characteristics of a Methane Diffusion Flame within a Confined Space under Sub-Atmospheric Pressure

Applied Sciences, 2023
Gas-fired boilers, gas stoves, and wall-mounted gas boilers are the main consumers of gas fuel, but they generally encounter problems when operating at high altitudes, such as reduced thermal efficiency and increased pollutant emissions. Previous studies
Jingkun Zhang, Yongbo Du, Siyu Zong, Nan Zhao, Yaodong Da, Lei Deng, Defu Che   +6 more
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Research on thermal effect and thermo kinetic parameters during oxidation combustion of lean coal

Meikuang Anquan, 2021
To investigate the oxidation combustion heat effect and thermokinetic behavior of lean coal, the pulverized coal samples were tested using C80 micro caloric system and thermogravimetric experimental device, respectively.
DENG Jun, LIU Le, WANG Caiping, REN Lifeng, BAI Zujin
doaj   +1 more source

Experimental Study of Influence on Microwave Plasma Ignition Combustion Performance of Pulse Microwave Signals

IEEE Access, 2019
It has been demonstrated by a large number of studies that microwave ignition can greatly extend the lean-burn limit in the internal combustion engines. This paper investigates the influence of the pulse period and duty cycle of pulsed microwave signals ...
Zhongli Wang, Yaoyao Wang, Liang Zhu, Wendong Ma, Jiafang Shan, Fukun Liu   +5 more
doaj   +1 more source