Results 41 to 50 of about 709 (208)

Numerical simulation of liquid fuel prechamber ignition [PDF]

open access: yes, 2021
A Computational Fluid Dynamics (CFD) model was built that simulates the transient, compressible, reacting, multi-phase environment that exists within a reciprocating engine's combustion chamber(s). ANSYS Fluent v13.0 was used with the Euler-Lagrangian Discrete Phase Model (DPM), the Shell autoignition model, and the Large Eddy Simulation (LES) method ...
openaire   +1 more source

An experimental investigation of a lean burn natural gas prechamber spark ignition engine for cogeneration [PDF]

open access: yes, 2001
The operation of a cogeneration internal combustion engine with unscavenged prechamber ignition was investigated. The objective was to evaluate the potential to reduce the exhaust gas emissions, particularly the CO emissions, below the Swiss limits (NOx ...
Röthlisberger, Roger
core   +1 more source

Comparative Study of Spark-Ignited and Pre-Chamber Hydrogen-Fueled Engine: A Computational Approach

open access: yesEnergies, 2022
Hydrogen is a promising future fuel to enable the transition of transportation sector toward carbon neutrality. The direct utilization of H2 in internal combustion engines (ICEs) faces three major challenges: high NOx emissions, severe pressure rise ...
Hammam Aljabri   +9 more
doaj   +1 more source

Comparison between direct and indirect (prechamber) spark ignition in the case of a cogeneration natural gas engine, part I: engine geometrical parameters [PDF]

open access: yes, 2021
The operation of a cogeneration internal combustion engine with unscavenged prechamber ignition was investigated. The objective was to evaluate the potential to reduce the exhaust gas emissions, particularly the CO emissions, without exhaust gas after ...
Röthlisberger, Roger, Favrat, Daniel
core   +3 more sources

CFD Optimization of the Pre-Chamber Geometry for a Gasoline Spark Ignition Engine

open access: yesFrontiers in Mechanical Engineering, 2021
In the present paper, an efficient optimization method based on Bayesian updating strategy is developed for the design of a spark-ignition engine equipped with pre-chamber.
Haiwen Ge   +5 more
doaj   +1 more source

Peculiarities of the working process of low-thrust hypergolic-propellant liquid rocket engines with a thrust of less than 1 N

open access: yesВестник Самарского университета: Аэрокосмическая техника, технологии и машиностроение, 2016
The article presents the results of theoretical and experimental studies of the peculiarities of the working process of low-thrust hypergolic- propellant liquid rocket engines (LTLRE) with the thrust of less than 1 N.
V. E. Nigodjuk, A. V. Sulinov
doaj   +1 more source

MODELING AND SIMULATION OF COMBUSTION AND DETONATION BY SUBCRITICAL STREAMER DISCHARGE [PDF]

open access: yesНаучно-технический вестник информационных технологий, механики и оптики, 2017
We consider the possibilities of combustion and detonation initiation for propane mixtured with air by microwave discharges created by a quasi-optical electromagnetic beam.
Pavel V. Bulat   +5 more
doaj   +1 more source

Nozzle Design of Plug-and-Play Passive Pre-Chamber Ignition Systems for Natural Gas Engines

open access: yesApplied Sciences, 2023
To evaluate the significance of the geometrical parameters of a passive pre-chamber on engine performance, this study investigated the design of a plug-and-play passive pre-chamber in a 15 L heavy-duty natural gas engine.
Wei Li   +4 more
doaj   +1 more source

Experimental investigation of prechamber autoignition in a natural gas engine for cogeneration [PDF]

open access: yes
A novel ignition concept based on autoignition in an unscavanged prechamber is currently being developed at the Laboratory for Industrial Energy Systems (LENI).
Heyne, Stefan   +3 more
core   +1 more source

Insights on prechamber enabled mixing-controlled combustion (PC-MCC) with methanol in an optical heavy-duty engine

open access: yesApplications in Energy and Combustion Science
Prechamber enabled mixing-controlled combustion (PC-MCC) utilizes an actively fueled prechamber as an ignition assistant to promote diffusion combustion of low cetane fuels.
Jared Zeman   +4 more
doaj   +1 more source

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