Results 21 to 30 of about 3,879,883 (226)

The Influence of Charge Motion on Pre-Chamber and Main Chamber Combustion in a Highly Dilute Jet Ignition Engine

open access: yesFrontiers in Mechanical Engineering, 2021
Though there are multiple viable powertrain options available for the automotive sector, those that contain internal combustion engines will continue to account for the majority of global sales for the next several decades.
Michael Bunce   +5 more
doaj   +1 more source

Optical diagnostics on the pre-chamber jet and main chamber ignition in the active pre-chamber combustion (PCC)

open access: yesCombustion and Flame, 2021
Abstract We studied the relationship between pre-chamber jet and main chamber ignition in the pre-chamber combustion (PCC) of an optical engine, fueled with methane and equipped with an active pre-chamber with two rows of orifices. Acetone planar laser-induced fluorescence (PLIF) and OH* chemiluminescence imaging techniques were simultaneously ...
Qinglong Tang   +9 more
openaire   +2 more sources

Numerical Investigation on the Performance of a 4-Stroke Engine with Different Passive Pre-Chamber Geometries Using a Detailed Chemistry Solver

open access: yesEnergies, 2022
Pre-chamber turbulent jet ignition represents one of the most promising techniques to improve spark ignition engines efficiency and reduce pollutant emissions.
Simone Bigalli   +6 more
doaj   +1 more source

Experimental Study of Pre-evacuation Effect on Second throat Diffuser Starting Process [PDF]

open access: yesعلوم، فناوری و کاربردهای فضایی, 2022
In the present study, the effect of pre- evacuation on starting process of a second throat exhaust diffuser has been investigated experimentally by examining a thrust optimized parabolic nozzle.
Nematollah Fouladi   +2 more
doaj   +1 more source

Laboratory study on "intracranial hypotension" created by pumping the chamber of a hydrocephalus shunt. [PDF]

open access: yes, 2011
BACKGROUND: It has been reported that pumping a shunt in situ may precipitate a proximal occlusion, and/or lead to ventricular over-drainage, particularly in the context of small ventricles.
Allin, David   +5 more
core   +1 more source

Effects of passive pre-chamber jet ignition on combustion and emission at gasoline engine

open access: yesAdvances in Mechanical Engineering, 2021
Pre-chamber jet ignition is a promising way to improve fuel consumption of gasoline engine. A small volume passive pre-chamber was tested at a 1.5L turbocharged GDI engine.
Wei Duan   +5 more
doaj   +1 more source

Lean combustion and emission performance of a gasoline direct injection engine with active pre-chamber

open access: yesAdvances in Mechanical Engineering, 2022
Pre-chamber jet ignition technology can effectively improve flame propagation speed and in-cylinder combustion rate, so it is conducive to the improvement of thermal efficiency and fuel economy.
Li Zhang   +5 more
doaj   +1 more source

The High-Acceptance Dielectron Spectrometer HADES [PDF]

open access: yes, 2009
HADES is a versatile magnetic spectrometer aimed at studying dielectron production in pion, proton and heavy-ion induced collisions. Its main features include a ring imaging gas Cherenkov detector for electron-hadron discrimination, a tracking system ...
Agakichiev, G.   +214 more
core   +2 more sources

An experimental study of wall-injected flows in a rectangular cylinder [PDF]

open access: yes, 2017
An experimental investigation of the flow inside a rectangular cylinder with air injected continuously along the wall is performed. This kind of flow is a two-dimensional approximation of what happens inside a solid rocket motor, where the lateral grain ...
Favini, B., Perrotta, A., Romano, G. P.
core   +1 more source

Radiolysis of ammonia-containing ices by energetic, heavy and highly charged ions inside dense astrophysical environments [PDF]

open access: yes, 2009
Deeply inside dense molecular clouds and protostellar disks, the interstellar ices are protected from stellar energetic UV photons. However, X-rays and energetic cosmic rays can penetrate inside these regions triggering chemical reactions, molecular ...
Balanzat, E.   +6 more
core   +3 more sources

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