G. Ferrari, Motori a Combustione Interna, Esculapio editore
J. B. Heywood, Internal Combustion Engine Fundamentals, McGraw Hill International Editions.
G. A. Pignone, U. R. Vercelli, Motori ad alta potenza specifica, Giorgio NADA editore
Learning Objectives
The aim of this course is to provide knowledge on reciprocating machines (basically Internal Combustion Engines and reciprocating compressors and pumps). Basically thermo-fludodynamic aspects will be analysed with the aim of investigating the main design criteria and how to analyse the machine performance.
The following capabilities will be acquired from an energetic student (ENM):
CA1 Ability of analysis and modeling of mechanical/electrical/propulsive components and systems: basic problems and models for industrial engineering, with special reference to mechanical and energy engineering.
CA2 Ability of applying knowledge in the field of thermofluidodynamic and machinery to solve problems of theoretical and applied thermodynamics, fluid dynamics and heat transfer.
CC2 Tools for modeling energy/mechanical/propulsion systems and their role in supporting the analysis and design of systems and components.
Understanding the organization of information in databases and computer design to support processes
CC5 Applied fluid dynamics and machinery: machine components and systems for energy conversion, propulsion and design principles: from the 0D basic approach to CFD for advanced design (optimization).
The following capabilities will be acquired from a mechanical (MEM) student:
CA11: Applying improved knowledge and understanding to present in written, verbal and, if necessary, multimedia form, their arguments and the results of their own study or work, with characteristics of organic and technical rigour.
CA12: Applying adequate knowledge and understanding to understand English texts.
CA15: Applying knowledge and understanding to achieve adequate preparation for tertiary level university studies (frequency to post-master's degree courses and doctoral schools) in order to further deepen knowledge and skills in research.
CC3: Knowledge, understanding and use of scientific (computer and other) tools specific to the field of mechanical engineering design.
CC12: Knowledge and understanding of methods for conceiving, planning, designing and managing complex and/or innovative systems, processes and services.
The following capabilities will be acquired from a degree mechanical (MEL) student:
CC4 Knowledge and understanding of thermodynamics applied to energy systems and of fluid-dynamic phenomena as well as models capable of representing them. Knowledge of systems and machines for the production and conversion of energy, with particular reference to turbomachinery and industrial combustion equipment. Understanding the role of different energy technologies in ensuring the environmental and economic sustainability of production.
CA4 Applying knowledge and understanding related to analytical modelling and experimental methods to design, analyze and test fluid machines, thermal motors and energy conversion systems. This includes: the application of design criteria for technical and thermos-technical plants, fluid and energy distribution; the application of thermodynamic principles to simple systems; the understanding of the main thermodynamic cycles and the reading of thermal diagrams; the identification of significant heat transmission mechanisms for engineering applications; the analysis and functional design of equipment of mechanical interest such as turbomachinery, energy conversion systems and internal combustion engines; the evaluation of the energy, economic and environmental performance of fluid, thermal and oleo-dynamic machinery.
The following cross-capabilities will be acquired:
CT3 Development of an adequate expression and technical discussion of own arguments
CT4 Graphic representation and communication (drafting of diagrams, graphs and tables)
Prerequisites
Thermodynamic cycles ( Beau de Rochas, 1st and 2nd Diesel, Sabathé).
Mechanical and kinematics aspects of the engine.
Coupling of cam and valve.
Balancing aspects
Teaching Methods
The course syllabus is carried out by means of lectures with the support of slide projection.
Type of Assessment
The aim of this course is to provide knowledge on reciprocating machines (basically Internal Combustion Engines and reciprocating compressors and pumps). Basically thermo-fludodynamic aspects will be analysed with the aim of investigating the main design criteria and how to analyse the machine performance.
The following capabilities will be acquired from an energetic student (ENM):
CA1 Ability of analysis and modeling of mechanical/electrical/propulsive components and systems: basic problems and models for industrial engineering, with special reference to mechanical and energy engineering.
CA2 Ability of applying knowledge in the field of thermofluidodynamic and machinery to solve problems of theoretical and applied thermodynamics, fluid dynamics and heat transfer.
CC2 Tools for modeling energy/mechanical/propulsion systems and their role in supporting the analysis and design of systems and components.
Understanding the organization of information in databases and computer design to support processes
CC5 Applied fluid dynamics and machinery: machine components and systems for energy conversion, propulsion and design principles: from the 0D basic approach to CFD for advanced design (optimization).
The following capabilities will be acquired from a mechanical (MEM) student:
CA11: Applying improved knowledge and understanding to present in written, verbal and, if necessary, multimedia form, their arguments and the results of their own study or work, with characteristics of organic and technical rigour.
CA12: Applying adequate knowledge and understanding to understand English texts.
CA15: Applying knowledge and understanding to achieve adequate preparation for tertiary level university studies (frequency to post-master's degree courses and doctoral schools) in order to further deepen knowledge and skills in research.
CC3: Knowledge, understanding and use of scientific (computer and other) tools specific to the field of mechanical engineering design.
CC12: Knowledge and understanding of methods for conceiving, planning, designing and managing complex and/or innovative systems, processes and services.
The following capabilities will be acquired from a degree mechanical (MEL) student:
CC4 Knowledge and understanding of thermodynamics applied to energy systems and of fluid-dynamic phenomena as well as models capable of representing them. Knowledge of systems and machines for the production and conversion of energy, with particular reference to turbomachinery and industrial combustion equipment. Understanding the role of different energy technologies in ensuring the environmental and economic sustainability of production.
CA4 Applying knowledge and understanding related to analytical modelling and experimental methods to design, analyze and test fluid machines, thermal motors and energy conversion systems. This includes: the application of design criteria for technical and thermos-technical plants, fluid and energy distribution; the application of thermodynamic principles to simple systems; the understanding of the main thermodynamic cycles and the reading of thermal diagrams; the identification of significant heat transmission mechanisms for engineering applications; the analysis and functional design of equipment of mechanical interest such as turbomachinery, energy conversion systems and internal combustion engines; the evaluation of the energy, economic and environmental performance of fluid, thermal and oleo-dynamic machinery.
The following cross-capabilities will be acquired:
CT3 Development of an adequate expression and technical discussion of own arguments
CT4 Graphic representation and communication (drafting of diagrams, graphs and tables)
Modalità di verifica
The exame is based on an oral discussion on generally 3 topics of the syllabus. This creates an oral interview carried out with a paper medium in which the candidate can report diagrams, formulae and graphs. Understanding and assimilation of the concepts covered (ENM CA1, CA2, CC2, CC5; MEM CA12, CA15, CC3, CC12; MEL CC4, CA4), the ability to report concepts with diagrams and graphs (CT3), linking the various areas (CT4), the ability to use appropriate vocabulary are tested.
Course program
Basically the course Is focused on:
- Fields of employment, typical parameters, geometrical and cinematic quantities.
- Indicated and effective quantities, characteristic curves, user-ICE coupling, ICE-vehicle integration.
- Influencing terms of intake process in 4 and 2 strokes engine.
- Power control and regulation: partial load working condition
- Overview on the main systems for fuel supplying: indirect and directed injection of the fuel; carburetor.
- charge motion analysis: flow characterization - swirl, tumble, squish.
- Spark ignition combustion: flame propagation, heat release law formulation, anomalous combustions.
- auto-ignition combustion: delay time for ignition, heat release law formulation, direct ignition systems (Common Rail, pump injector).
Volumetric machines:
- Fields of employment, typical parameters, geometrical and cinematic quantities.
- Indicated and effective quantities, characteristic curves.
- Power control and regulation:
- Overview on the main applications
- Automatic valves in reciprocating compressors