Results 31 to 40 of about 740 (163)

Computational investigation of methanol pre-chamber combustion in a heavy-duty engine

open access: yesApplications in Energy and Combustion Science, 2023
This work explored the potential of methanol pre-chamber combustion (PCC) for heavy-duty engine applications. An optical engine experiment was conducted to visualize the jet flame development.
Xinlei Liu   +7 more
doaj   +1 more source

Effects of Engine Speed on Prechamber-Assisted Combustion

open access: yes, 2023
Lean combustion technologies show promise for improving engine efficiency and reducing emissions. Among these technologies, prechamber-assisted combustion (PCC) is established as a reliable option for achieving lean or ultra-lean combustion.
Sharma, Priybrat   +3 more
core   +1 more source

Numerical investigation on the effects of fueling the Turbulent Jet Ignition gas engine with methane and hydrogen

open access: yesPojazdy Szynowe, 2023
The modern solution of two-stage combustion, namely the Turbulent Jet Ignition (TJI), enables the combustion of ultra-lean mixtures. Thanks to this solution, it became possible to reduce fuel consumption and, at the same time, to increase the combustion ...
Ireneusz Pielecha   +2 more
doaj   +1 more source

Design of an Additive Manufactured Natural Gas Engine with Thermally Conditioned Active Prechamber

open access: yes, 2023
In order to decarbonize and lower the overall emissions of the transport sector, immediate and cost-effective powertrain solutions are needed. Natural gas offers the advantage of a direct reduction of carbon dioxide (CO2) emissions due to its better ...
Kraljevic, Ivica   +8 more
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

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   +2 more sources

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

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

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   +2 more sources

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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