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Engine emissions control
03OFOLO
A.A. 2024/25
Course Language
Inglese
Degree programme(s)
Master of science-level of the Bologna process in Automotive Engineering (Ingegneria Dell'Autoveicolo) - Torino
Borrow
01GKMLO 01UTELO
Course structure
| Teaching | Hours |
|---|---|
| Lezioni | 62 |
| Esercitazioni in aula | 16 |
| Esercitazioni in laboratorio | 2 |
Lecturers
| Teacher | Status | SSD | h.Les | h.Ex | h.Lab | h.Tut | Years teaching |
|---|---|---|---|---|---|---|---|
| Millo Federico | Professore Ordinario | IIND-06/A | 62 | 0 | 0 | 0 | 6 |
Co-lectures
Context
| SSD | CFU | Activities | Area context |
|---|---|---|---|
| ING-IND/08 | 8 | B - Caratterizzanti | Ingegneria meccanica |
2021/22
The module aims at providing students with applied knowledge regarding the design of the internal combustion engine and of its emissions control system, with a focus on thermo-fluid dynamic and combustion phenomena, as well as on criteria pollutant formation and control mechanisms.
Deep knowledge of the main features of internal combustion engines for ground vehicles propulsion, as far as efficiency, performance and pollutant emissions are concerned.
Deep knowledge of issues related to combustion processes and related influence on the engine efficiency and emissions of pollutants.
Capability of defining the design specifications for propulsion systems keeping into account the technological, economic and environmental constraints.
Capability of defining the architectures of propulsion and pollutant control systems on the basis of engineering specifications.
Capability to develop and design internal combustion engines, including their emission control system.
Students are supposed to have a preliminary solid background on internal combustion engines fundamentals from previous courses of "Propulsion systems and their applications to vehicles" and of "Energy management in hybrid and electric vehicles"
PART A - HIGHLY-EFFICIENT INTERNAL COMBUSTION ENGINES (ICEs)
- Recall on ICE energy balance
- Charge motion within intake and combustion systems
- Supercharging and turbocharging: methods of power boosting, turbomatching, charge air cooling system. Boost control strategies.
- Fuel injection and combustion processes in spark ignition (SI) engines
- Fuel injection and combustion processes in compression ignition (CI) engines
- Introduction to computational fluid dynamics: conservation of mass and momentum, Reynolds averaged Navier-Stokes equations, turbulence modelling.
- Practical combustion system design for SI and CI engines
- Advanced combustion concepts: LTC, PCCI, RCCI, TJI
- Diagnostics and modelling of combustion in ICEs
PART B: EMISSION CONTROL SYSTEMS
- Pollutant emissions formation mechanisms and in-cylinder control
- Aftertreatment technologies: Three Ways Catalysts, Gasoline Particulate Filters, Diesel Oxidation Catalysts, Diesel Particulate Filters, Lean NOx traps and Selective Catalytic reduction; combined systems (SCR on Filter and 4-ways catalysts)
- Pollutant emission measurements: raw and diluted emissions, particulate matter and particle number emissions measurements
- Alternative fuels for ICEs: review of conventional and renewable fuels for ICEs. Combustion systems and after-treatment adaptation to alternative fuels.
PART C: ENGINE CONTROL SYSTEM
- Objectives and overview of engine management systems. Analog and digital sensors for automotive applications. Actuators for automotive applications
Impact on engine control management on engine emissions. Diagnosis and recovery of engine management. Engine states and engine mode machines. Hints to self-adaptive strategies.
- Engine control system: engine control function, modes and diagnostics.
- Model-driven design of control systems for automotive applications: overview of model-driven techniques and supporting instruments; validation techniques and rapid prototyping: model-in-the-loop, software-in-the-loop, processor-in-the-loop, hardware-in-the-loop.
The course structure is as follows: circa 60 hours of lessons, 20 hours of practical trainings
Trainings / Laboratories
1^ TRAINING
Fuel consumption and emissions calculations of passenger cars over the NEDC and the WLTP driving cycles.
2^ TRAINING
Measurement and calculation of specific emissions (raw and diluted)
3-4-5^ TRAININGS
Engine simulation with commercially available software (GT-Power):
(3) Engine modelling fundamentals, application examples: EGR, VVA and turbo control
(4) Virtual engine calibration for SI engines
(5) Virtual engine calibration for CI engines
LABORATORY (live experience, if possible; otherwise virtual experience through recorded video, and, if possible, through a sw simulation of the test)
Experimental measurements on a CI engine.
Attending both theoretical and practical lectures is warmly recommended, since there is not a single text for all the topics of the subject.
For more details on specific topics, the following books can provide a comprehensive reference:
- Heywood, J. B. : “International combustion engine fundamentals”, McGraw-Hill, 2nd Ed. 2018, ISBN-10: 1260116107.
- “Automotive Handbook”, R. Bosch Ed., 7° Ed., 2007 – ISBN 978-0-76801953-7.
- Kasab, J.J., Strzelec, A. : "Automotive Emissions Regulations and Exhaust Aftertreatment Systems", SAE Int. Ed,, 2020
Exam: Written test;
The final exam is only in written form and it is made of 4 questions (open answers) and 1 numerical problem, for a total duration of 2 hours.
The use of books, notes or any other kind of support material is not allowed.
A sample of a typical exam test will be distributed through the Web before the end of the semester, so to allow students to perform a self-evaluation test before the final exam.
Reports assigned during the semester must be delivered to the lecturer before the written exam, mandatorily: although the reports will not be evaluated for the final score, students are requested to deliver their reports to be admitted to the final written exam.
The aim of the exam is to check that the student possesses an adequate knowledge of internal combustion engines, including engine emissions control systems, also on a quantitative basis, and is capable to select the most suitable acrhitecture/technology for a given application.
In addition to the message sent by the online system, students with disabilities or Specific Learning Disorders (SLD) are invited to directly inform the professor in charge of the course about the special arrangements for the exam that have been agreed with the Special Needs Unit. The professor has to be informed at least one week before the beginning of the examination session in order to provide students with the most suitable arrangements for each specific type of exam.