Results 271 to 280 of about 84,193 (310)

Computational Study of the Air/Fuel Mixture in a Small Spark Ignition Engine

Volume 2: 27th Computers and Information in Engineering Conference, Parts A and B, 2007
In an effort to understand the fluid dynamics in the droplet formation process, during the fuel delivery portion of operation of a small spark ignition engine, a computational study of the process was undertaken. A combination of high-speed photography and Computational Fluid Dynamics was used to investigate the droplet formation process.
Suzanne Caulfield, Ryo S. Amano
openaire   +1 more source

Transient Plasma Ignition of Quiescent and Flowing Air/Fuel Mixtures

2022
Transient plasmas that exist during the formative phase of a pulse-ignited atmospheric pressure discharge were studied for application to ignition of quiescent and flowing fuel-air mixtures. Quiescent methane–air mixture ignition was studied as a function of equivalence ratio, and flowing ethane–air mixture was studied in a pulse detonation engine (PDE)
Wang, Fei, Liu, J.B., Sinibaldi, J., Brophy, C., Kuthi, A., Jiang,, C., Ronney, P., Gundersen, Martin A.   +7 more
openaire   +1 more source

A Study of Air-Fuel Mixture Formation in Direct-Injection SI Engines

SAE Technical Paper Series, 2004
<div class="htmlview paragraph">An investigation was made into two approaches to air-fuel mixture formation in direct injection SI engines in which charge stratification is controlled by swirl or tumble gas motions, respectively. Particle image velocimetry (PIV), laser-induced fluorescence (LIF) and air-fuel ratio measurement by infrared ...
Akihiko Kakuho, Koichi Yamaguchi, Yutaka Hashizume, Tomonori Urushihara, Teruyuki Itoh, Eiji Tomita   +5 more
openaire   +1 more source

Study of Air-Fuel Mixture Preparation in a Single Cylinder SI Engine

SAE Technical Paper Series, 2010
<div class="section abstract"><div class="htmlview paragraph">Engine operation at low temperatures is of considerable interest from the standpoint of exhaust gas emissions and fuel economy. A semi-empirical film model is developed to study the transient cold starting process.
Balasubramanian Thiruvallur Loganathan, Shamit Bakshi PhD, Ghodeswar Dinesh   +2 more
openaire   +1 more source

Kinetics of NO Formation and Decay in Nanosecond Pulse Discharges in Air-Fuel Mixtures

53rd AIAA Aerospace Sciences Meeting, 2015
Time-resolved, absolute NO and N atom number densities are measured by NO Laser Induced Fluorescence (LIF) and N Two-photon Absorption LIF in a diffuse plasma filament, nanosecond pulse discharge in dry air, hydrogen-air, and ethylene-air mixtures at 40 Torr, over a wide range of equivalence ratios.
David Burnette, Ivan Shkurenkov, Igor V. Adamovich, Walter R. Lempert   +3 more
openaire   +1 more source

Analysis of the Air-Fuel Mixture Control in Natural Gas Fuelled Turbocharged Engines

ASME 2008 Internal Combustion Engine Division Spring Technical Conference, 2008
The use of natural gas in medium and heavy duty engines for public transportation is a promising way for reducing exhaust emissions. Computer simulations, coupled with engine tests, have arisen as a valuable methodology to study the gas exchange processes inside intake and exhaust manifolds.
Francisco Payri, Jose Galindo, Jose Manuel Luja´n, He´ctor Climent   +3 more
openaire   +1 more source

Influence of the interaction surface between plasma and air/fuel mixture on the combustion process

2012 International Conference and Exposition on Electrical and Power Engineering, 2012
This work presents a comparison from the combustion quality point of view between two different spark plugs: a classical one and a new type of spark plug having an innovative geometry and which can provide two simultaneous sparks. The two devices have been tested on a Deltalab EX1000 multi-disciplinary test bench equipped with a Honda GX31 mono ...
D. Astanei, B. Hnatiuc, S. Pellerin, N. Cerqueira, E. Hnatiuc, M. Ursache   +5 more
openaire   +1 more source

The Influence of Hydrogen Addition to the Air-Fuel Mixture on Otto Engine Combustion

SAE Technical Paper Series, 1979
<div class="htmlview paragraph">By means of experimental analysis,which were carried out at the chair of Internal Combustion Engines of the University of Kaiserslautern,it could be demonstrated that it is possible to operate an Otto-engine without throttling,at a very high air-fuel-ratio by adding hydrogen to the intake air.Due to the very lean ...
openaire   +1 more source

Measurement of Air-Fuel Mixture Distribution in a Gasoline Engine Using LIEF Technique

SAE Technical Paper Series, 1992
<div class="htmlview paragraph">The laser-induced exciplex fluorescence (LIEF) technique, currently used to observe mixture formation in a diesel engine, has been applied to a spark ignition (SI) engine and a new equivalence ratio calibration technique has been developed in order that two-dimensional measurements of the equivalence ratio may be ...
Rio Shimizu, Seiichi Matumoto, Shigeo Furuno, Motohide Murayama, Shinji Kojima   +4 more
openaire   +1 more source

Effects of Flash Boiling in Nozzle Flow of GDI Injector on Air/Fuel Mixture

Volume 2: Emissions Control Systems; Instrumentation, Controls, and Hybrids; Numerical Simulation; Engine Design and Mechanical Development, 2018
The widths of fuel plumes around nozzle outlets expanded due to flash boiling during the nozzle flow. In some sprays, the length (penetration) of the air/fuel mixture increased due to the flash boiling. A cavitation model was incorporated in a simulation of the fuel spray integrating a simulation of the nozzle flow with a simulation of the air/fuel ...
Eiji Ishii, Kazuki Yoshimura, Seiichi Koshizuka, Akihiro Sekine, Shota Sugihara   +4 more
openaire   +1 more source