Results 1 to 10 of about 14,848 (204)

Skeletal CH3OH/NOx Kinetic Model for Simulating Spark-Ignition and Turbulent Jet Ignition Engines [PDF]

ACS Omega
Methanol is a promising renewable fuel for achieving a better engine combustion efficiency and lower exhaust emissions. Under exhaust gas recirculation conditions, trace amounts of nitrogen oxides have been shown to participate in fuel oxidation and impact the ignition characteristics significantly.
Wenxian Tang, Mickael Silva, Khaiyom Hakimov, Xiaoyuan Zhang, Ponnya Hlaing, Emre Cenker, Abdullah S. AlRamadan, James W. G. Turner, Aamir Farooq, Hong G. Im, S. Mani Sarathy   +10 more
doaj   +5 more sources

Effect of Temperature Conditions on Flame Evolutions of Turbulent Jet Ignition [PDF]

Energies, 2021
Turbulent jet ignition technology can significantly improve lean combustion stability and suppress engine knocking. However, the narrow jet channel between the pre-chamber and the main chamber leads to some difficulties in heat exchange, which ...
Jiaying Pan, Yu He, Tao Li, Haiqiao Wei, Lei Wang, Gequn Shu   +5 more
doaj   +3 more sources

Lean Methane Mixtures in Turbulent Jet Ignition Combustion System

Energies, 2023
The development of modern vehicle drives is aimed at reducing fuel consumption (i.e., crude oil) and minimizing the exhaust emission of toxic components. One such development is the implementation of a two-stage combustion system. Such a system initiates
Ireneusz Pielecha, Filip Szwajca
doaj   +2 more sources

Turbulent spark-jet ignition in SI gas fuelled engine [PDF]

MATEC Web of Conferences, 2017
The article contains a thermodynamic analysis of a new combustion system that allows the combustion of stratified gas mixtures with mean air excess coefficient in the range 1.4-1.8.
Pielecha Ireneusz, Bueschke Wojciech, Cieślik Wojciech, Skowron Maciej   +3 more
doaj   +2 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

A Novel One- and Zero-Dimensional Model for Turbulent Jet Ignition [PDF]

Flow, Turbulence and Combustion, 2021
AbstractTurbulent jet ignition (TJI) is a promising combustion technology for burning highly diluted air-fuel mixtures. Computationally efficient models to assess the effect of the operating conditions and design parameters on the ignition propensity and timing are of paramount importance for the development of combustion systems employing TJI. To this
Konstantinos Bardis, Panagiotis Kyrtatos, Christophe Barro, Alexey Denisov, Yuri Martin Wright, Kai Herrmann, Konstantinos Boulouchos   +6 more
openaire   +2 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