Controllo e riduzione delle emissioni inquinanti di MCI

In past years, engine investigations were focused on different subjects, among which studies on combustion processes and fuel characterization, theoretical and experimental analysis of friction losses and engine mechanical efficiency, and, in particular, a wide research on automotive engine part-load operation, controlling load through different cylinder deactivation techniques.
More recently, the research activity has been addressed to the optimization of engine components and subsystems and of the relevant control strategies, to improve engine performance and reduce fuel consumption (and, consequently, CO2 emission) and exhaust emissions. Engine investigations have been focused on the development of theoretical simulation methodologies and optimization tools and on the characterization of different subsystems, especially for turbocharged Diesel engines. As regards these topics, studies were developed on turbocharging and exhaust gas recirculation systems, while in a second phase activities have been focused on the optimization of common rail fuel injection systems control. In particular, different multiple injection strategies were compared, taking into account timing and injected quantities for pilot and after injections aiming at fuel consumption and emissions reduction.
Present investigations are developed on an automotive turbocharged Diesel engine, focused on the development of a prototype low-pressure exhaust gas recirculation system, whose on-engine application is matched to existing turbocharging and high pressure EGR systems, being the first fitted with a variable nozzle turbine. The integrated control strategies allows to reduce NOX emissions and fuel consumption, improving turbocharger compressor and turbine operating conditions, with a reasonable increment of soot emissions.

Publications

1. Zamboni G., Capobianco M. Influence of high and low pressure EGR and VGT control on in-cylinder pressure diagrams and rate of heat release in an automotive turbocharged diesel engine. Applied Thermal Engineering, vol. 51, p. 586-596, ISSN: 1359-4311, doi: 10.1016/j.applthermaleng.2012.09.040, marzo 2013.
2. Zamboni G., Capobianco M. Experimental study on the effects of HP and LP EGR in an automotive turbocharged diesel engine. Applied Energy 94, pp. 117-128, 2012, ISSN: 0306-2619, doi:10.1016/ j.apenergy.2012.01.046.
3. Capobianco M., Gambarotta A., Canova M., Zamboni G. Theoretical and Experimental Tools for the Definition of Automotive I.C.Engines Control Strategies. In: R. Cipollone. Atti Progetto MIUR di Rilevante Interesse Nazionale 2002-03 "Theoretical and Experimental Procedures to the Development of Innovative Injection Systems in ICE", p.1-14, 2005.
4. Capobianco M., Montini M., Zamboni G. Fuel Injection and EGR Systems Control in a Common Rail Diesel Engine. 4th International Conference on "Control and Diagnostics in Automotive Applications", paper 03A2034, ATA, Sestri Levante, 6/2003.
5. Zamboni G. Evaluation of Mechanical Losses and Analysis of the Influence of EGR and Turbocharger Control on Heat Release Rate in an Automotive Diesel Engine. 3rd Internazional Conference on "Control and Diagnostics in Automotive Applications", paper 01A3029, ATA, Sestri Levante, 7/2001, doi: 10.13140/2.1.2881.6165.