OBIETTIVI FORMATIVI

The main objectives of the course are: to provide an adequate and critical knowledge on environmental friendly propulsion systems for different applications, taking into account energy-related and economic issues. To develop skills for the analysis and comparison of advanced systems and technologies for ultra-low emissions Internal Combustion Engines (ICE), the use of alternative fuels (biofuels, NG, hydrogen), the development of hybrid propulsion systems and the application of fuel cells to road vehicles propulsion. To provide criteria for the selection of different systems and technologies referring to several application fields, allowing a first assessment of real benefits in terms of energy consumption and environmental impact for the proposed technical solutions compared to conventional systems.

OBIETTIVI FORMATIVI (DETTAGLIO) E RISULTATI DI APPRENDIMENTO

At the end of the unit, the student is expected to be able to:

• compare technical solutions for emissions control and CO2 reduction in propulsion systems with a quantitative approach;
• apply theoretical basis and operating principles to enhance performance and environmental impact of propulsion systems;
• identify feasible options for production and use of alternative fuels and energy vectors;
• evaluate technical pathways for the development of advanced propulsion systems;
• examine books and texts selecting technical information and data.

PREREQUISITI

Basic thermodynamic knowledge (suggested)

Basic knowledge on Internal Combustion Engines (suggested)

MODALITA' DIDATTICHE

54 hours of lectures, including discussions of technical issues, selection of topics for detailed analysis on available literature, preparation of presentations for seminars in classroom.

PROGRAMMA/CONTENUTO

Lectures

Advanced systems and technologies for ultra-low emissions ICE – General overview on problems, legislation and possible actions. Advanced fuel injection systems. Advanced combustion processes. Innovative devices and systems for exhaust emissions control. Advanced turbocharging concepts. CO2 emission reduction in thermal engines. Downsizing concept and related technologies.

Alternative fuels – Natural gas. Hydrogen and hydrogen-methane mixtures for thermal engine powertrains. Biofuels. Ammonia and methanol. CO2 emissions overall balance. Well-to-wheel analysis.

Electric and hybrid propulsion – Electric powertrain: advantages/disadvantages, performance, operating range, costs, components, overall energy and emissive balance. Hybrid propulsion: hybrid system configurations, hybrid categories (start-&-stop, micro, mild, full hybrid systems), main features, characteristics and limits of operating configurations, applied examples, overall energy and emissive balance, further developments.

Fuel cell application to propulsion systems – General overview on the electrochemical conversion process, fuel cell types and characteristics. Fuel cell application to powertrain systems: types, operating problems, performance, hydrogen generation and storage systems, energy and emissive balance; applications, technical and economic issues, further developments.

TESTI/BIBLIOGRAFIA

Detailed notes on the different topics discussed in lectures will be provided by the teacher through the Aulaweb page. Therefore, all registered students will access documents to prepare the exam. It is recommended to attend the lectures.

P. J. Dingle and M. D. Lai, Diesel Common Rail and Advanced Fuel Injection Systems, Society of Automotive Engineers, 2005.

R. van Basshuysen, Gasoline Engine with Direct Injection, Vieweg+Teubner, 2009.

AA. VV., Advanced combustion for low emissions and high efficiency: a literature review of HCCI combustion concepts, CONCAWE Technical Report no.4/08, 2008.

B. Kegl, M. Kegl, S. Pehan, Green Diesel Engines – Biodiesel Usage in Diesel Engines, Springer, 2013.

B. Morey, Future Automotive Fuels and Energy – Technology Profile, Society of Automotive Engineers, 2013.

G. Kalghatgi, Fuel/Engine Interactions, Society of Automotive Engineers, 2014.

K. Owen, T. Coley, Automotive Fuels Reference Book, Society of Automotive Engineers, 3rd Edition, 2014.

I. Husain, Electric and Hybrid Vehicles – Design Fundamentals, Taylor and Francis Group, 2011.

AA. VV., Fuel Cell Handbook, U.S. Department of Energy, Office of Fossil Energy, National Energy Technology Laboratory, 7th Edition, 2004.

P. Corbo, F. Migliardini, O. Veneri, Hydrogen Fuel Cells for Road Vehicles, Springer, 2011.

R. Edwards, H. Hass, J.F. Larivé, L. Lonza, H. Maas, D. Rickeard, Well-to-Wheels analysis of future automotive fuels and powertrains in the European context – Well-to-Wheels Report, Version 5, European Commission – Joint Research Centre, Institute for Energy and Transport, 2020.

K. Senecal, F. Leach, Racing Toward Zero - The Untold Story of Driving Green. SAE International, 2021.