Results 1 to 10 of about 1,497,400 (281)

Numerical evaluation of heat transfer effects on the improvement of efficiency of a spark ignition engine characterized by cylinder variability

Case Studies in Thermal Engineering, 2022
In this work, the effects of in-cylinder heat transfer on indicated thermal efficiency of a spark ignition engine showing a cylinder-to-cylinder variation are numerically analyzed.
Luigi Teodosio, Cinzia Tornatore, Luca Marchitto   +2 more
doaj   +1 more source

Effect of Cylinder-by-Cylinder Variation on Performance and Gaseous Emissions of a PFI Spark Ignition Engine: Experimental and 1D Numerical Study

Applied Sciences, 2021
Combustion stability, engine efficiency and emissions in a multi-cylinder spark-ignition internal combustion engines can be improved through the advanced control and optimization of individual cylinder operation.
Luigi Teodosio, Luca Marchitto, Cinzia Tornatore, Fabio Bozza, Gerardo Valentino   +4 more
doaj   +1 more source

Design of an Optically Accessible Intake Manifold for Characterization of Liquid and Gaseous Jets in PFI Operating Conditions

Designs, 2023
The intake manifold and its components play a key role in the proper formation of air–fuel mixtures suitable for correct engine operation. In this article, starting from the original intake manifold design fitted to an optically accessible spark-ignited ...
Giovanni Cecere, Adrian Irimescu, Simona Silvia Merola   +2 more
doaj   +1 more source

Performance Analysis of WHR Systems for Marine Applications Based on sCO₂ Gas Turbine and ORC

Energies, 2023
Waste heat recovery (WHR) can represent a solution to improve the efficiency of ships’ propulsion, helping to exceed stringent greenhouse gas emission limits.
Fabrizio Reale, Raffaela Calabria, Patrizio Massoli   +2 more
doaj   +1 more source

Measurement of Sub-23 nm Particles Emitted from PFI/DI SI Engine Fueled with Oxygenated Fuels: A Comparison between Conventional and Novel Methodologies

Energies, 2022
This study focuses on the measurement of sub-23 nm particles emitted from a small DI/PFI spark ignition engine through conventional techniques and innovative systems.
Francesco Catapano, Silvana Di Iorio, Agnese Magno, Paolo Sementa, Bianca Maria Vaglieco   +4 more
doaj   +1 more source

Ultra-Fine Particle Emissions Characterization and Reduction Technologies in a NG Heavy Duty Engine

Atmosphere, 2022
This paper describes some strategies to deal with the arduous challenge of reducing emissions from the transport sector. Two different approaches in particle emissions reduction from natural gas (NG) heavy duty (HD) engines were evaluated.
Pierpaolo Napolitano, Davide Di Domenico, Dario Di Maio, Chiara Guido, Stefano Golini   +4 more
doaj   +1 more source

Biomass Behavior upon Fast Pyrolysis in Inert and in CO₂-Rich Atmospheres: Role of Lignin, Hemicellulose and Cellulose Content

Energies, 2022
The present work focuses on the quality of char and primary tar produced from fast pyrolysis in N2 and CO2 of lignocellulosic biomasses: walnut shells (lignin-rich), straw (hemicellulose-rich) and pinewood (cellulose-rich).
Osvalda Senneca, Barbara Apicella, Carmela Russo, Francesca Cerciello   +3 more
doaj   +1 more source

The Potential of Ethanol/Methanol Blends as Renewable Fuels for DI SI Engines

Energies, 2023
Electrification is considered an optimal long-term solution for the decarbonization of the transport sector. However, in the medium period, propulsion systems will continue to dominate urban mobility, thus requiring the shift from fossil fuels toward low
Silvana Di Iorio, Francesco Catapano, Agnese Magno, Paolo Sementa, Bianca Maria Vaglieco   +4 more
doaj   +1 more source

Influence of Pyrolysis Temperature on Biochar Produced from Lignin–Rich Biorefinery Residue

ChemEngineering, 2022
The biorefinery concept is growing rapidly for bio-based production of fuels and products, and steam explosion is by far the most applied pre-treatment technology allowing the delignification of lignocellulosic biomass.
Corinna Maria Grottola, Paola Giudicianni, Fernando Stanzione, Raffaele Ragucci   +3 more
doaj   +1 more source

Algorithm for Cycle-To-Cycle Firing TDC Identification Based on Wasted Spark Duration Measurements in Small Engines

Applied Sciences, 2023
Spark ignition (SI) engines are often used as distributed power generation applications. They ensure quick deployment, cost effective electricity, and are a valid choice for back-up power.
Adrian Irimescu, Simona Silvia Merola, Bianca Maria Vaglieco   +2 more
doaj   +1 more source