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:
- Applying knowledge and understanding related to the analysis and optimization of mechanical devices and systems, as well as to their innovation also through the development and improvement of design methods, constantly confronting with the rapid evolution of mechanical engineering.
- Applying knowledge and understanding related to the identification, location and retrieval of data and information necessary for the assessment
- Applying knowledge and understanding related to the definition, design and implementation of researches useful for understanding problems, through the use of both theoretical and experimental models and techniques.
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 exame is based on an oral discussion on generally 3 topics of the syllabus. It allows to evaluate the comprehension of the reciprocating connections of the main concepts. Moreover the appropriated use of the technical words has taken into account.
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