Topic Editors

Department of Industrial and Information Engineering and Economics, The University of L’Aquila, v. G. Gronchi, 18, 67100 L’Aquila, Italy
Department of Industrial and Information Engineering and Economics (DIIIE), University of L’Aquila, 67100 L’Aquila, Italy
Dr. Marco Di Bartolomeo
Department of Industrial and Information Engineering and Economics, University of L’Aquila, 67100 L’Aquila, Italy

Advanced Engines Technologies: 2nd Edition

Abstract submission deadline
30 November 2027
Manuscript submission deadline
10 February 2028
Viewed by
430

Topic Information

Dear Colleagues,

In recent years, the development of internal combustion engines, particularly for the transportation sector, has been pushed by the need to reduce tailpipe pollutant emissions. National and international regulations have been imposed to limit the most harmful pollutants and to preserve the air quality, in particular for urban areas. Moreover, the recent awareness around climate change and the need to also reduce greenhouse gases has stimulated the release of specific regulations to limit CO2 emissions, which can definitively be obtained by decreasing fuel consumption and increasing overall engine and vehicle efficiency.

These limits are progressively more stringent and call for innovative technologies able to reduce the environmental impact of engines. Hence, a portfolio of several technical solutions is under investigation, with the final purpose to increase engine efficiency and reduce pollutants emissions. Therefore, they can be categorized or compared to each other in terms of amount of fuel saved on a specific operating point or driving mission. The effects on specific emissions should also be assessed. These two contributions (fuel and emissions reduction values) participate in the definition of market readiness of the technology proposed, being related to the operating cost of the engine and the avoidance of fines related to exceeding CO2 emission limits.

In this Topic "Advanced Engines Technologies: 2nd Edition", papers related to technical solutions proposed to reduce fuel consumption and/or tailpipe emissions from engines are welcomed. They can be related to mechanical innovations, thermal management, lubrication, aftertreatment devices, sustainable fuels and fuel handling, turbocharging, combustion improvement, powertrain hybridization, auxiliaries’ and components’ electrifications and efficiency increase, energy recovery and integration of energy subsystems, optimized control strategies, and sustainable design. Both theoretical and experimental works will be considered, in transportation applications and other relevant economic sectors, which could help the transition toward the sustainable engines of the future.

Dr. Davide Di Battista
Dr. Fabio Fatigati
Dr. Marco Di Bartolomeo
Topic Editors

Keywords

  • engine
  • efficiency
  • emissions
  • technologies
  • sustainability

Participating Journals

Journal Name Impact Factor CiteScore Launched Year First Decision (median) APC
Energies
energies
3.9 8.3 2008 16.7 Days CHF 2600 Submit
Sci
sci
4.1 5.4 2019 28.2 Days CHF 1400 Submit
Sustainability
sustainability
4.1 8.9 2009 16.9 Days CHF 2400 Submit
Vehicles
vehicles
3.2 5.5 2019 19.7 Days CHF 1800 Submit

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Published Papers (1 paper)

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36 pages, 14710 KB  
Article
Influence of Hydrogen Enrichment on Particulate Matter Formation Pathways in Dual-Fuel Compression Ignition Engines
by Mirosław Edmund Karczewski and Grzegorz Aleksander Szamrej
Energies 2026, 19(17), 3971; https://doi.org/10.3390/en19173971 - 24 Aug 2026
Viewed by 211
Abstract
This study evaluates the effects of hydrogen enrichment of compressed natural gas (HCNG, CNG) on particle number emissions and particle size distribution in a dual-fuel compression-ignition (CI) engine. The experiments were conducted using a Fiat 1.3 MultiJet engine operated with conventional diesel fuel, [...] Read more.
This study evaluates the effects of hydrogen enrichment of compressed natural gas (HCNG, CNG) on particle number emissions and particle size distribution in a dual-fuel compression-ignition (CI) engine. The experiments were conducted using a Fiat 1.3 MultiJet engine operated with conventional diesel fuel, diesel–CNG, and diesel–hydrogen-enriched CNG. Measurements were performed over a range of engine speeds, loads, and energy-substitution conditions. The hydrogen volume fraction in the gaseous fuel ranged from 5–10 vol.% to 53 vol.%. Particle size distributions were measured using an ELPI+ impactor. The use of CNG and hydrogen generally reduced soot-particle emissions in the accumulation mode, particularly within the particle-diameter range of approximately 0.03–0.2 µm. However, under some operating conditions, the number of ultrafine particles increased, particularly in the sub-23 nm range. This finding indicates a transition from a particle-formation mechanism dominated by soot formation and agglomeration to one dominated by nucleation and condensation. This phenomenon is associated with suppressed soot-precursor formation, enhanced soot oxidation by OH radicals, and a reduction in the surface area available for the condensation of volatile components. The effect of hydrogen depended on the engine operating point (EOP) and did not always scale linearly with hydrogen concentration. The results confirm that evaluating alternative fuels solely on the basis of particulate mass is insufficient. Particle number, particle size distribution, and the sub-23 nm fraction must also be considered. Full article
(This article belongs to the Topic Advanced Engines Technologies: 2nd Edition)
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