Results 21 to 30 of about 56,122 (303)

A mechanism for high-frequency oscillation in ramjet combustors and afterburners [PDF]

, 1956
An experimental investigation was made of the behavior of a small two-dimensional combustion chamber, burning a uniform mixture of air and fuel vapor under conditions of high-frequency oscillation or screech.
Marble, Frank E., Rogers, Don E.
core   +1 more source

Lean Combustion Technology for Internal Combustion Engines: a Review

Science and Technology, 2012
Lean burn is an effective way to improve spark ignition engine fuel economy. Lean combustion is generally considered as a timely solution to the more stringent environmental regulations and global weather concerns in the new era. However, the instability associated with the lean flame significantly keeps the lean combustion technique from being widely ...
Danaiah P., Ravi Kumar P, Vinay Kumar D.
openaire   +2 more sources

An Experimental and Numerical Study on Supported Ultra-Lean Methane Combustion

Energies, 2019
With a much larger global warming potential (GWP) and much shorter lifespan, the reduction of methane emissions offers an additional opportunity and a relatively quick way of mitigating climate change in the near future.
Ho-Chuan Lin, Guan-Bang Chen, Fang-Hsien Wu, Hong-Yeng Li, Yei-Chin Chao   +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

Investigation of transition between spark ignition and controlled auto-ignition combustion in a V6 direct-injection engine with cam profile switching [PDF]

, 2008
Controlled auto-ignition (CAI) combustion, also known as Homogeneous Charge Compression Ignition (HCCI) can be achieved by trapping residuals with early exhaust valve closure in a direct fuel injection in-cylinder four-stroke gasoline engines (through ...
Kalian, N, Qiao, J, Zhao, H
core   +1 more source

Influence of Ambient Pressure on the Jet-Ignition Combustion Performance and Flame Propagation Characteristics of Gasoline in a Constant Volume Combustion Chamber

Energies
Based on a constant volume combustion chamber, the initial ambient pressure effect on gasoline combustion performance and flame propagation of the active and passive pre-chamber ignition systems were studied.
Zongjie Hu, Minglong Li, Xinke Miao, Zhiyu Wang, Yuanzhi Tang, Xijiang Wu, Wangchao Yu, Zhe Kang, Jun Deng   +8 more
doaj   +1 more source

General comparison of pre-chamber jet ignition and spark ignition on combustion and emission characteristics of a methanol direct injection engine

Case Studies in Thermal Engineering
Compared with spark ignition (SI), pre-chamber jet ignition (PCJI) can effectively accelerate the combustion and extend lean burn limit. In this paper, the effects of PCJI and SI on methanol direct injection engine were investigated experimentally ...
Hailiang Kou, Xiaodong An, Hao Duan, Xiaojun Yin, Ke Zeng   +4 more
doaj   +1 more source

Method for Burning Super-Poor Fuel Mixtures in the Combustion Chamber of the Energy Microturbine by Means of theStreamer Discharge [PDF]

Problems of the Regional Energetics, 2018
The paper considers the problem of increasing fuel efficiency and reducing emissions of gas turbine power plants. The aim of the work is to develop a method for burning extra-lean fuel mixtures.
Grachev L.P., Bulat P.V., Esakov I.I., Bulat M.P., Volobuev I.A., Upyrev V.V.   +5 more
doaj   +1 more source

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   +1 more source

Stratospheric cruise emission reduction program [PDF]

, 1977
A recently implemented NASA effort specifically aimed at reducing cruise oxides of nitrogen from high-altitude aircraft is discussed. The desired emission levels and the combustor technology required to achieve them are discussed. A brief overview of the
Diehl, L. A., Marek, C. J., Reck, G. M., Szaniszlo, A. J.   +3 more
core   +1 more source