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Politecnico di Torino
Academic Year 2009/10
01BULDS
Internal combustion engines
Master of science-level of the Bologna process in Mechanical Engineering - Vercelli
Teacher Status SSD Les Ex Lab Tut Years teaching
Nuccio Patrizio ORARIO RICEVIMENTO     36 13 6 0 8
SSD CFU Activities Area context
ING-IND/08 5 B - Caratterizzanti Ingegneria meccanica
Objectives of the course
The aim of this module is to provide the students of 'Ingegneria Meccanica' with the fundamental knowledge about internal combustion engines. Particular attention is invited to the engine architecture and to the basic concepts, that are necessary to understand how engines operate and for their flow-dynamics and thermal design.
Expected skills
Familiarity with reciprocating internal combustion engine architecture as well as operating and control features. Ability to carry out predictive calculations of engine performance. Ability to identify the parameters that influence the trade-off between performance, fuel consumption and engine emission.
Prerequisites
It is necessary to be familiar with the topics covered in the course of: Fundamentals of Engineering Thermodynamics; Heat transfer, acoustics and lighting engineering; Applied mechanics and machines; Thermal and hydraulic machines.
Syllabus
Ideal Cycles for reciprocating internal combustion engines. Efficiency of equivalent air cycle with a perfect gas. Efficiency of a fuel-air cycle. Equivalent fuel-air cycles. Thermodynamic efficiency of the actual cycle in Otto and Diesel engines. Mechanical friction, pumping losses and work in driving auxiliaries of reciprocating internal combustion engines. Valve train and inlet-exhaust systems for 4-stroke and 2-stroke engines. Volumetric efficiency in 4-stroke and 2-stroke engines. Brake power and brake mean effective pressure, specific fuel consumption on reciprocating internal combustion engines
Carburettor for spark-ignition engines. Electronic fuel injection system for spark-ignition engines; after treatment for pollutant emissions. Combustion in spark-ignition engines: normal combustion. Flame propagation and pressure development in engine cylinder. Detonation and preignition. Effect of air-fuel ratio on spark-ignition engine performance. Mixture requirements for Diesel engines; size effects in fuel injection. Combustion in Diesel Engines. Fuel injection apparatus for Diesel engines.
Performance of reciprocating internal combustion engines: torque and power characteristic, part-load characteristic of Otto and Diesel engines. Performance of supercharged and turbocharged engines. General remarks on the application to the vehicle of reciprocating internal combustion engines.
Laboratories and/or exercises
Numerical and graphical exercises based on the topics covered during the lectures are requested to the students. Disassembly and re-assembly of an internal combustion four-stroke engine. Experimental tests on the dynamometric bench test.
Bibliography
Capetti: Motori Termici. Ed. UTET, 1967. A. Beccari, C. Caputo: Motori Termici Volumetrici. Ed. UTET, 1987. J.B. Heywood: Internal Combustion Engine Fundamentals. Ed. McGaw Hill,1988. G.C. Ferrari: Motori a combustione interna. Ed Il Capitello,1992.
Revisions / Exam
The students are required to take an oral examination based on the lectures as well as on the assessment of the practical work carried out during the course.

Programma definitivo per l'A.A.2009/10
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