Results 1 to 10 of about 60,092 (339)

Chaotic combustion in spark ignition engines [PDF]

Chaos, Solitons & Fractals, 2003
We analyse the combustion process in a spark ignition engine using the experimental data of an internal pressure during the combustion process and show that the system can be driven to chaotic behaviour. Our conclusion is based on the observation of unperiodicity in the time series, suitable stroboscopic maps and a complex structure of a reconstructed ...
Wendeker, Mirosław, Czarnigowski, Jacek, Litak, Grzegorz, Szabelski, Kazimierz   +3 more
core   +7 more sources

Spark Ignition Energy Measurements in Jet A [PDF]

, 2000
Experiments have been carried out to measure the spark ignition energy of Jet A vapor in air. A range of ignition energies from 1 mJ to 100 J was examined in these tests.
Krok, J. Christopher, Lee, Julian J., Shepherd, Joseph E.   +2 more
core   +3 more sources

Simulation and Research of Methane Premixed Combustion Characteristics Based on Constant Volume Combustion Chamber with Different Ignition Modes

Energies, 2023
Dual spark plug ignition can accelerate the burning velocity of nature gas and improve the engine performance. However, the mechanism between the two flames and the disturbance characteristics of flame to flow field during the combustion process under ...
Yue Wang, Xin Zhang, Xinmiao Fan, Yanfei Li   +3 more
doaj   +1 more source

Ethanol/Gasoline Blends as Alternative Fuel in Last Generation Spark-Ignition Engines: A Review on CO and HC Engine Out Emissions

Energies, 2021
Among the alternative fuels existing for spark-ignition engines, ethanol is considered worldwide as an important renewable fuel when mixed with pure gasoline because of its favorable physicochemical properties.
Paolo Iodice, Massimo Cardone
doaj   +1 more source

Performance and emission study of low HCNG fuel blend in SI engine with fixed ignition timing

Cogent Engineering, 2022
Natural gas (NG) has many advantages of clean fuels and can replace gasoline in spark ignition (SI) engines. However, it comes with disadvantages such as low energy density. Hydrogen blended NG can improve the fuel characteristics.
Vivek Pandey, Suresh Guluwadi, Gezahegn Habtamu Tafesse   +2 more
doaj   +1 more source

Coupling a Lagrangian–Eulerian Spark-Ignition (LESI) model with LES combustion models for engine simulations

Science and Technology for Energy Transition, 2022
In the United States transportation sector, Light-Duty Vehicles (LDVs) are the largest energy consumers and CO2 emitters. Electrification of LDVs is posed as a potential solution, but SI engines can still contribute to decarbonization.
Kazmouz Samuel J., Scarcelli Riccardo, Cheng Zhen, Dai Meizhong, Pomraning Eric, Senecal Peter K., Sjöberg Magnus   +6 more
doaj   +1 more source

Experimental Study and Optimisation of a Non-Conventional Ignition System for Reciprocating Engines Operation with Hydrogen–Methane Blends, Syngas, and Biogas

Energies, 2022
The paper deals with the experimental study of a medium-load spark ignition engine under operation with different fuel mixtures among those deemed as promising for the transition towards carbon-free energy systems. In particular, the performance of a non-
Luigi De Simio, Sabato Iannaccone, Massimo Masi, Paolo Gobbato   +3 more
doaj   +1 more source

Combustion Characteristics and Laminar Flame Speed of Premixed Ethanol-Air Mixtures with Laser-Induced Spark Ignition [PDF]

, 2018
Laser-induced spark-ignition (LISI) has an advanced ignition technique with a few benefits over spark ignition. In this study, flame morphology, laminar flame characteristics and combustion characteristics of premixed anhydrous ethanol and air mixtures ...
Badawy, Bechtold, Bradley, Dirrenberger, Frankel, Heywood, Jiang, Kelley, Kopecek, Kuang, Ma, Matalon, Morsy, Rassweiler, Rassweiler, Srivastava, Sung, Wang, Wang, Weinrotter, Wu, Wu, Xu, Xu, Xu   +24 more
core   +1 more source

A Novel Way to Enhance the Spark Plasma-Assisted Ignition for an Aero-Engine Under Low Pressure

Applied Sciences, 2018
Finding a new ignition strategy for ignition enhancement in a lean-burn combustor has always been the biggest challenge for high-altitude, long-endurance unmanned aerial vehicles (UAVs).
Shengfang Huang, Zhibo Zhang, Huimin Song, Yun Wu, Yinghong Li   +4 more
doaj   +1 more source

Numerical Investigation on the Jet Characteristics and Combustion Process of an Active Prechamber Combustion System Fueled with Natural Gas

Energies, 2022
An active prechamber turbulent ignition system is a forced ignition method for internal combustion engines fueled with low reactivity fuels, i.e., natural gas and gasoline, which could expand the lean-burn limit, promote flame propagation, and ensure ...
Lina Xu, Gang Li, Mingfa Yao, Zunqing Zheng, Hu Wang   +4 more
doaj   +1 more source