Università degli Studi di Napoli "Parthenope"

Teaching schedule

Academic year: 
2019/2020
Belonging course: 
Course of Master's Degree Programme on ENGINEERING MANAGEMENT
Location: 
Napoli
Disciplinary sector: 
FLUID MACHINERY (ING-IND/08)
Language: 
Italian
Credits: 
6
Year of study: 
1
Teachers: 
MINUTILLO Mariagiovanna
Cycle: 
First Semester
Hours of front activity: 
48

Language

Italian

Course description

The course objective is to understand the operation, the control, the architecture and the chemical and physical phenomena that characterize the internal combustion engines. Thus, the course will be devoted to provide the tools needed for performing a critical analysis on the choice of the ICEs according to the application fields. Moreover, great attention will be devoted to the combustion process with the aim to estimate its influence on performance and emissions. Finally the hybrid configuration will be analyzed.

Risultati di apprendimento (declinati rispetto ai descrittori di Dublino)

Conoscenza e capacità di comprensione (knowledge and understanding)
Knowledge on the ideal cycles of ICEs
Knowledge on the ICEs auxiliary systems
Knowledge on measuring instruments for test benches
Knowledge on the development of the hybrid vehicles
Understanding of the aspects concerning the environmental impact of the ICEs

Conoscenza e capacità di comprensione applicate (applying knowledge and understanding)
Applying knowledge on performance measurements in test benches
Applying knowledge on emissions measurements instruments
Applying understanding in internal combustion engine optimization criteria

Autonomia di giudizio (making judgements)
Making judgements on the more ICEs with respect to the application field
Making judgements on the ICEs performance
Making judgements on the influence of the operating parameters on the environmental impact

Abilità comunicative (communication skills)
Communication skills the choice of the ICEs designing criteria
Communication skills on the description of testing activities in a test bench

Capacità di apprendere (learning skills)
Learning skills by finding the tools useful for improving the knowledge
Learning skills by finding the tools useful for elaborating the own critical analysis concerning performance and socio-economic issues.

Prerequisites

The student has to know the main contents of the courses of Chemistry and Fluid Machinery:
- Stoichiometry of chemical reactions
- Combustion reactions
- Ideal gas law
- Efficiencies of Thermodynamic cycles
- Fluid dynamics of flows in ducts
- Operation of Pumps, compressors and turbines

Syllabus

INTRODUCTION (1,5 CFU: lessons 4 h, exercises 8 h)
Classification, working principle and operating fields. Ideal and actual cycles. Performance maps.
Definition/Calculation of engine parameters: specific consumption, Indicated power, specific fuel consumption, Mean effective pressure, indicated efficiency, Mechanical efficiency, Effective Power.
COMBUSTION (1 CFU: lessons 8 h)
- Combustion in spark ignition engines: activation energies, flame propagation, ignition delay, spark advancing. Detonation. Octane number definition, influence of operating parameters on the engine combustion in SI engine.
- Combustion in Diesel engine: diffusive combustion, ignition delay, ignition advancing, the spray. Cetane number definition. Direct injection engines. Pre-chamber combustion systems.
TURBULENCE and FLUID MOTIONS IN THE CYLINDERS (0,5 CFU: lessons 4 h)
Steady-state turbulence, unsteady-state turbulence. Mean and Instantaneous values (pressure, temperature, speed, etc.). Cyclic dispersion in combustion engines. Length and time scales in turbulent flows. Organized motion: swirl, tumble, squish.
AIR CHARGING SYSTEMS (Forced Induction) (0,5 CFU: lessons 4 h)
The effect of the charging in a ideal Diesel Cycle. Volumetric and dynamic compressors (blowers). External supercharging. Mechanical Supercharging. Exhaust-gas Turbocharging. A Turbo-Compounded Engine. Comprex Supercharger. Turbocharging with Intercooler & Waste gate.
FUEL INJECTION SYSTEMS (0,5 CFU: lessons 4 h)
Fuel injection systems classification. Main components of fuel injection systems: low-pressure components (fuel tank, fuel supply pump and fuel filter), high-pressure side components (high pressure pump, accumulator, fuel injector and fuel injector nozzle). The Common Rail fuel injection. High-pressure fuel pump system. Fuel injection in spark ignition engines.
AIR CHARGING (Natural Aspiration) IN 4 STROKE and 2 STROKE ENGINES (1 CFU: lessons 4 h, exercises 4 h)
Four stroke and two stroke engines. Air intake systems. Definition/Calculation of performance parameters of two stroke engines. Air charging in two stroke engines. Characteristics of intake and exhaust ports controlled by the motion of the pistons. Air charging in four stroke engines. Ram effect of incoming charge. Pressure wave tuning.
Volumetric filling coefficient definition and the influence of the operating parameters on its value. Efflux POLLUTANT EMISSIONS IN INTERNAL COMBUSTION ENGINE. (0,5 CFU: lessons 4 h)
Pollutants in Diesel engines. Pollutants in spark ignition engine. Regulations related to vehicle and engine emissions standards. The influence of the engine operating parameters on emissions. Emissions control systems in SI engine. The catalytic converter in SI engine. Emissions control systems in Diesel engine.
DUAL FUEL ENGINES AND HYBRID ELECTRIC VEHICLES MOTORI DUAL FUEL E VEICOLI IBRIDI (0,5 CFU: lessons 4 h)
Dual fuel engine (diesel-methane) description. Methane indirect injection and diesel direct injection. Dual fuel engine performance and emissions.
Hybrid electric vehicles (HEV) introduction. Description of: Micro HEV. Mild HEV. Full HEV. Plug-in HEV.

INTRODUCTION (1,5 CFU: lessons 4 h, exercises 8 h)
Classification, working principle and operating fields. Ideal and actual cycles. Performance maps.
Definition/Calculation of engine parameters: specific consumption, Indicated power, specific fuel consumption, Mean effective pressure, indicated efficiency, Mechanical efficiency, Effective Power.
COMBUSTION (1 CFU: lessons 8 h)
- Combustion in spark ignition engines: activation energies, flame propagation, ignition delay, spark advancing. Detonation. Octane number definition, influence of operating parameters on the engine combustion in SI engine.
- Combustion in Diesel engine: diffusive combustion, ignition delay, ignition advancing, the spray. Cetane number definition. Direct injection engines. Pre-chamber combustion systems.
TURBULENCE and FLUID MOTIONS IN THE CYLINDERS (0,5 CFU: lessons 4 h)
Steady-state turbulence, unsteady-state turbulence. Mean and Instantaneous values (pressure, temperature, speed, etc.). Cyclic dispersion in combustion engines. Length and time scales in turbulent flows. Organized motion: swirl, tumble, squish.
AIR CHARGING SYSTEMS (Forced Induction) (0,5 CFU: lessons 4 h)
The effect of the charging in a ideal Diesel Cycle. Volumetric and dynamic compressors (blowers). External supercharging. Mechanical Supercharging. Exhaust-gas Turbocharging. A Turbo-Compounded Engine. Comprex Supercharger. Turbocharging with Intercooler & Waste gate.
FUEL INJECTION SYSTEMS (0,5 CFU: lessons 4 h)
Fuel injection systems classification. Main components of fuel injection systems: low-pressure components (fuel tank, fuel supply pump and fuel filter), high-pressure side components (high pressure pump, accumulator, fuel injector and fuel injector nozzle). The Common Rail fuel injection. High-pressure fuel pump system. Fuel injection in spark ignition engines.
AIR CHARGING (Natural Aspiration) IN 4 STROKE and 2 STROKE ENGINES (1 CFU: lessons 4 h, exercises 4 h)
Four stroke and two stroke engines. Air intake systems. Definition/Calculation of performance parameters of two stroke engines. Air charging in two stroke engines. Characteristics of intake and exhaust ports controlled by the motion of the pistons. Air charging in four stroke engines. Ram effect of incoming charge. Pressure wave tuning.
Volumetric filling coefficient definition and the influence of the operating parameters on its value. Efflux POLLUTANT EMISSIONS IN INTERNAL COMBUSTION ENGINE. (0,5 CFU: lessons 4 h)
Pollutants in Diesel engines. Pollutants in spark ignition engine. Regulations related to vehicle and engine emissions standards. The influence of the engine operating parameters on emissions. Emissions control systems in SI engine. The catalytic converter in SI engine. Emissions control systems in Diesel engine.
DUAL FUEL ENGINES AND HYBRID ELECTRIC VEHICLES MOTORI DUAL FUEL E VEICOLI IBRIDI (0,5 CFU: lessons 4 h)
Dual fuel engine (diesel-methane) description. Methane indirect injection and diesel direct injection. Dual fuel engine performance and emissions.
Hybrid electric vehicles (HEV) introduction. Description of: Micro HEV. Mild HEV. Full HEV. Plug-in HEV.

Teaching Methods

The teaching includes theoretical lessons and exercises in the classroom. The exercises will be performed together and a discussion on the results will be carried out.

Textbooks

Motori a combustione interna. G. Ferrari.
Slides of the course available on http://www.ingegneria.uniparthenope.it/gesmag/index.php?page=insegnamenti

Learning assessment

The exam, which lasts about 30 minutes, consists of an oral test during which the level of knowledge of both the main issues related to the engines operating conditions and detailed information related to engine construction and its devices will be assessed. In addition, the ability in explaining the conceptual aspects and the mastery in the oral presentation of the arguments will be also taken into account

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