Results 21 to 30 of about 1,514 (209)

CFD Analysis of the Fuel–Air Mixture Formation Process in Passive Prechambers for Use in a High-Pressure Direct Injection (HPDI) Two-Stroke Engine

open access: yesEnergies, 2020
The research on two-stroke engines has been focused lately on the development of direct injection systems for reducing the emissions of hydrocarbons by minimizing the fuel short-circuiting. Low temperature combustion (LTC) may be the next step to further
Marco Ciampolini   +5 more
doaj   +1 more source

Role of Defects on the Particle Size–Capacitance Relationship of Zn–Co Mixed Metal Oxide Supported on Heteroatom‐Doped Graphenes as Supercapacitors

open access: yesAdvanced Science, Volume 9, Issue 34, December 8, 2022., 2022
Supercapacitors hold considerable promise over real energy needs in different applications such as wearable electronic devices and automotive, among others. Here, the structure–performance relationship of Zn and Co mixed metal oxide nanoparticles supported on different doped graphenes, is studied.
Jiajun Hu   +3 more
wiley   +1 more source

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

XPS Examination of the Chemical Composition of PEGMUA‐Coated Gold Nanoparticles

open access: yesParticle &Particle Systems Characterization, Volume 39, Issue 9, September 2022., 2022
Polyethylene glycol (PEG)‐11‐mercaptoundecanoic acid (MUA)‐coated gold nanoparticles are characterized using X‐ray photoelectron spectroscopy regarding their chemical composition. Analysis of the peaks shows that gold is present as gold (0) and gold (I).
Philine Hepperle   +5 more
wiley   +1 more source

Spectroscopic Ellipsometry Investigation of a Sensing Functional Interface: DNA SAMs Hybridization

open access: yesAdvanced Materials Interfaces, Volume 9, Issue 19, July 4, 2022., 2022
Here, a multitechnique approach for an in‐depth characterization of a label‐free detection platform for the recognition of nucleic acid sequences is presented. The cross‐fertilization between nanolithography tools, compositional analysis, and mass sensitive and optical spectroscopy methods allows clear identification of UV DNA resonances, a ...
Giulia Pinto   +5 more
wiley   +1 more source

Determination of Sr2+ mobility in viscous bovine bone marrow by cryo‐time‐of‐flight secondary ion mass spectrometry

open access: yesRapid Communications in Mass Spectrometry, Volume 36, Issue 12, 30 June 2022., 2022
Rationale In osteoporosis research, strontium ions (Sr2+) have emerged as promising therapeutic agent in modified bone cements for better fracture healing. Modeling of Sr2+ dispersion in bone could be used as a predictive tool for the evaluation of functionalized biomaterials in future.
Christine Kern   +2 more
wiley   +1 more source

Economy and emission characteristics of the optimal dilution strategy in lean combustion based on GDI gasoline engine equipped with prechamber

open access: yesAdvances in Mechanical Engineering, 2021
EGR and excess-air dilution have been investigated in a 1.5 L four cylinders gasoline direct injection (GDI) turbocharged engine equipped with prechamber.
Li Wang   +4 more
doaj   +1 more source

Influence of Pre-Chamber Volume, Orifice Diameter and Orifice Number on Performance of Pre-Chamber SI Engine—An Experimental and Numerical Study

open access: yesEnergies, 2023
This paper presented an experimental and numerical study of pre-chamber volume, number of orifices and orifice diameter influence on engine performance and emissions.
Rudolf Tomić   +3 more
doaj   +1 more source

Nitriding of White‐Solidified Fe–C–Si Alloys: Diffusion Path Concept Applied to Inhomogeneous Microstructures

open access: yesAdvanced Engineering Materials, Volume 24, Issue 3, March 2022., 2022
The Fe nitride and compound layer formation during nitriding of white‐solidified Fe–C–Si alloys is studied. Due to the heterogeneous distribution and limited diffusivity of Si, different microstructure regions behave like different alloys being nitrided simultaneously.
Stefan Kante   +2 more
wiley   +1 more source

[Retracted] Environmental Emission Analysis of Biodiesel with Al2O3 Nanometal Additives as Fuel in a Diesel Engine

open access: yesJournal of Nanomaterials, Volume 2021, Issue 1, 2021., 2021
The exploitation of fossil fuels has fueled the modern world’s development since the industrial revolution. Other energy sources, such as wood, charcoal, and animal power, were displaced by these fuels, which were relatively easy to obtain, had low cost of production, and were easily transportable.
Mohammad Ibrahim Al Mishlah Alghamdi   +4 more
wiley   +1 more source

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