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GIAN MARCO BIANCHI
Docente Interateneo
Dipartimento di Ingegneria "Enzo Ferrari"
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Insegnamento: Modeling and Control of Internal Combustion Engines and Hybrid Propulsion Systems
Advanced Automotive Engineering (Offerta formativa 2020)
Obiettivi formativi
Modeling and Control of ICEs and Hybrid Powertrains:
The course has the objective of better understanding modern internal combustion engines for motor vehicles and hybrid propulsion systems, with particular reference to their architecture, functionality, environmental impact and control system. Students develop the ability to model dynamic systems, with a control-oriented approach and with particular application to internal combustion engines and hybrid powertrains (electric, mechanical, hydraulic,…). Finally, the course provides the knowledge necessary to develop control strategies based on physical models of the system (powertrain and / or vehicle), and oriented to the minimization of fuel consumption and pollutant emissions.
Advanced Combustion System:
Course will provide a deep knowledge on the thermo-fluid processes governing the reciprocating engine operations.
Topics will deal with advanced combustion concepts and actual design targets. The goal is to promote the knowledge and the capability to handle combustion physics and component operation fundamentals. The students will be capable to face the design of combustion system, accomplishing with emission regulations and fuel conversion efficiency goals.
Prerequisiti
Internal Combustion Engines, Fluid Machinery operation
Programma del corso
Modeling and Control of ICEs and Hybrid Powertrains:
The first part of the course deals with modeling and simulation of internal combustion engines, with a control-oriented approach.
Model objectives: to determine the main engine operating parameters time (or crank-angle based) histories. Mass and energy balance application to the main engine sub-volumes. Crank-angle vs time based simulation. Discrete vs continuous engine models. Intake air mass flow simulation: throttle model. Four-cylinder engine model. Wide Open Throttle (WOT) and load step simulations.
Engine control calibration.
Simulation of steady-state and transient conditions.
Comparison between Alfa-N, Speed-Density and MAF systems for determining intake air mass flow.
Lambda closed-loop control. Fuel film model and compensator.
Cruise control system. Idle speed control system.
After discussing the main motivations for hybrid powertrains, the second part of the course presents an overview of optimal control theory and introduces a control-oriented model of a hybrid vehicle. Possible solutions for energy consumption minimization are then developed and analyzed in a simulation environment.
Advanced Combustion Systems:
1. Spark Ignited Combustion System: ignition and main combustion process. The knock and pre-ignition events. Cycle-to-cycle variation.
2. Compression Ignition non-premixed combustion: mixture formation, fuel auto-ignition, non-premixed combustion. Emission formation mechanisms.
3. Criteria for the combustion chamber design
4. In-cylinder charge motion: Swirl, Tumble, Squish motions.
5. High-pressure direct-injection injection system (gasoline and Diesel engine). Injection system layout and operation. Multihole injector layout and operations.
6. Liquid jet atomization and spray breakup process.
Metodi didattici
Modeling and Control of ICEs and Hybrid Powertrains:
The course is held in English. The lessons take place in the classroom, and a personal computer will be used by the instructor to show some PowerPoint presentations and to develop mathematical models. Possibly, each student will use a personal computer running Matlab/Simulink during the simulation and model development sessions. The educational material is uploaded before each lecture on the University online platform.
Attendance is strongly recommended for better learning of concepts and methodologies, but does not affect the final evaluation process.
Advanced Combustion Systems:
The course includes: theoretical lectures made with the aid of multimedia systems. The didactic material is uploaded on the University website; training activities related to solve a practical combustion system design problem: students are grouped in teams of 4/6 people and asked to autonomously manage and develop a project to be presented and discussed during the exam.
Testi di riferimento
Modeling and Control of ICEs and Hybrid Powertrains:
Handouts concerning some elements of the program, exercises and examples, are made available online to the students. The following list presents the main publications that could be used by the students to deepen specific topics, or to complement their background on the subject.
"Introduction to modeling and control of internal combustion engine systems", L. Guzzella, C. H. Onder, Springer-Verlag, 2004.
"Engine Modeling and Control", R. Isermann, Springer, 2014.
“Vehicle Propulsion Systems: Introduction to Modeling and Optimization”, L. Guzzella, A. Sciarretta, Springer-Verlag, 2005
"Hybrid Electric Vehicles - Energy Management Strategies", S. Onori, L. Serrao, G. Rizzoni, Springer, 2016.
Advanced Combustion Systems:
Lecturer notes and presentation provided during the course in advance by uploading on the University dedicated web site.
Option:
“Internal Combustion Engine Fundamentals”, J.B., Heywood, Mc Graw Hill.
Verifica dell'apprendimento
Modeling and Control of ICEs and Hybrid Powertrains:
Learning assessment is finalized through a final oral examination, which takes place for about 60-90 minutes, answering a few questions in writing (diagrams, equations, diagrams, drawings, ...) and then discussing them with the instructor.
This test is intended to verify the student knowledge about the main subjects of the course. The final vote takes into account the ability to solve problems in the matters discussed during the lectures, and the acquisition of engineering methodologies for assessing the performance of automotive energy conversion systems.
The evaluation, expressed in thirtieths, will be higher the more the student is:
- autonomous in articulating answers to the questions;
- exhaustive in explaining the topics;
- capable of synthesizing the most important parameters and relationships through graphs, sketches, and schematics.
During the exam, students are not allowed to use the lecture notes or other material and they are required to have an identity document.
Advanced Combustion Systems:
The course includes: theoretical lectures made with the aid of multimedia systems. The didactic material is uploaded on the University website; training activities related to solve a practical combustion system design problem: students are grouped in teams of 4/6 people and asked to autonomously manage and develop a project to be presented and discussed during the exam.
Risultati attesi
Through lectures and technical seminars by specialists, students learn the methods and techniques of modeling dynamic systems, with a control-oriented approach and with particular application to internal combustion engines and hybrid powertrains (electric, mechanical, hydraulic,…)..
Through the autonomous project development and practical exercises, students learn how to apply the knowledge gained, by developing control strategies based on physical models of the system, even in new and unfamiliar multidisciplinary fields.
Knowledge and understanding: students learn the methods and techniques of engineering design, and develop the ability to think out and implement original ideas, even in a Research & Development contest and to learn the methods and main analysis techniques for advanced powertrains suitable to be used in automotive application.
Applying knowledge and understanding: through the autonomous project development, students learn how to apply the knowledge in R&D division to develop up-to date combustion systems and to configure and size advanced propulsion systems.
Making judgments: through the engineering project development, in team, and the discussion with the teacher, students develop the ability to integrate knowledge and handle complexity, and formulate judgments even on the basis of incomplete or limited information, reflecting on social and ethical responsibilities linked to the application of their knowledge and judgments.
Communication skills: through the work in team and the discussion with the teacher, students develop the ability to critically communicate, especially using the engineering technical language, technical information, ideas, problems and solutions to both specialist and non-specialist.
Learning skills: the activities described allow students to develop the skills necessary to autonomously deepen technical topics, in order to effectively face professional challenges or to undertake further studies.