Results 11 to 20 of about 15,086 (244)

Prechamber selection for a two stage turbulent jet ignition of lean air-gas mixtures for better economy and emission [PDF]

E3S Web of Conferences, 2018
The paper presents the results of thermodynamic and exhaust emission analyses of the combustion process using three combustion chambers. The combustion process research was performed on a single-cylinder AVL 5804 engine equipped with a dual-band ...
Pielecha Ireneusz, Wislocki Krzysztof, Cieslik Wojciech, Fiedkiewicz Lukasz   +3 more
doaj   +2 more sources

Large eddy simulation of spark ignition in a turbulent methane jet [PDF]

Combustion and Flame, 2009
Large eddy simulation (LES) is used to compute the spark ignition in a turbulent methane jet flowing into air. Full ignition sequences are calculated for a series of ignition locations using a one-step chemical scheme for methane combustion coupled with the thickened flame model.
Guilhem Lacaze, E. G. Richardson, Thierry Poinsot   +2 more
openalex   +4 more sources

The Influence of Helium Addition on the Combustion Process in a Hydrogen-Fueled Turbulent Jet Ignition Engine [PDF]

Applied Sciences
There are considerably fewer requirements for the quality of hydrogen combusted in an engine than its quality for fuel cells. Therefore, the analysis was carried out on the combustion of hydrogen–helium mixtures in an engine with a two-stage combustion ...
Dawid Mielcarzewicz, Ireneusz Pielecha
doaj   +2 more sources

Combustion modelling of turbulent jet ignition in a divided combustion chamber

International Journal of Engine Research, 2021
Turbulent jet ignition is seen as one of the most promising strategies to achieve stable lean-burn operation in modern spark-ignition engines thanks to its ability to promote rapid combustion. A nearly stoichiometric mixture is ignited in a small-volume pre-chamber, following which multiple hot turbulent jets are discharged in the main chamber to ...
Mattia Olcuire, Clara Iacovano, Alessandro D'Adamo, Sebastiano Breda, Tommaso Lucchini, Stefano Fontanesi   +5 more
openalex   +3 more sources

Lean ammonia-fueled engine operation enabled by hydrogen-assisted turbulent jet ignition

Frontiers in Mechanical Engineering
Anhydrous ammonia (NH3) use in internal combustion engines represents a zero-carbon energy solution that is fully sustainable if NH3 is generated renewably.
Shawn A. Reggeti, William F. Northrop
doaj   +2 more sources

Experimental observation of the TJI-initiated HPDI gas combustion: Vertically crossed flame jet and methane jet

Applications in Energy and Combustion Science, 2023
In the field of natural gas marine engines, the high-pressure direct injection (HPDI) technology is widely used to achieve emission reduction while maintaining equivalent thermal efficiency and power output compared to diesel engines.
Lijia Zhong, Wanhui Zhao, Haiqiao Wei, Lei Zhou   +3 more
doaj   +1 more source

Combustion of Turbulent Lean Mixtures by Pulsed Jet Ignition.

TRANSACTIONS OF THE JAPAN SOCIETY OF MECHANICAL ENGINEERS Series B, 1992
Eiichi MURASE, Shinsuke ONO, Kunihiko HANADA, Fumihiro TARA, Antoni K. OPPENHEIM   +4 more
openalex   +3 more sources

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

CFD-based methodology for the characterization of the combustion process of a passive pre-chamber gasoline engine

Transportation Engineering, 2023
Pre-chamber (PC) ignition systems, enabling Turbulent Jet Ignition (TJI) combustion, represent a promising technology to extend the lean limit of Spark Ignition Internal Combustion Engines.
A. Piano, A. Scalambro, F. Millo, F. Catapano, P. Sementa, S. Di Iorio, A. Bianco   +6 more
doaj   +1 more source

Three-Dimensional Direct Numerical Simulation of Near-Field Ozone-Enhanced Lean Premixed Syngas Turbulent Jet Flame

Energies, 2022
Due to its enhancement in the flame speed, ozone added in lean premixed syngas turbulent jet flame was investigated by the three-dimensional direct numerical simulation method in the near field of the flame.
Cong Xu, Junguang Lin, Zhihua Wang, Kaidi Wan, Shien Sun, Zhijun Zhou   +5 more
doaj   +1 more source