B2398 - Modeling and Control of Sustainable Powertrains

Learning outcomes

At the end of the course the student knows how to model sustainable powertrain systems, and how power can be controlled, to optimize efficiency and well-to-wheel emissions.

Course contents

1.1: Fundamentals of modeling and control (15 hours)

Simulink modeling: Main blocks that will be used in the course;

overview of Simulink blocksets; main simulation settings.

Plant modeling: white/grey/black box modeling (NNET); tools and examples; differential equations: transfer functions.

Control systems: input/outputs and controllers structures; sampling and aliasing; main sensors and actuators; closed loop/feed forward controllers; PID controllers.

filtering: analog filters; analog filters performance and configuration; digital filters; digital filters performance and configuration.

2.1 Vehicle Modeling (5 hours)

Forces acting on the vehicle, transmission from the engine to the wheels, dynamic equilibrium; tires modeling

2.2: ICE Modeling (10 hours)

Engine cycle quantities, cycle to cycle variation and modelling strategies.

Knock modelling

Air dynamics modelling (filling/emptying); turbocharger modelling.

PFI fuel dynamics modelling.

Emissions modelling (black box); Oxygen storage modelling; SCR system modelling.

2.3 Battery-electric system modeling (5 hours)

EV components modeling: cells-bettery modelling; Inverter-emotor modelling

2.4: FC system modeling (3 hours)

FC system modelling: stack modeling; balance of plant

2.5: cooling system modeling (5 hours)

Cooling system modelling: hydraulic modelling; heat exchange modelling (ε-NTU method+heat capacity); coolant characteristics.

3.1 ICE control (10 hours)

fundamentals of ICE control: I/O and actuations (crankshaft-based and other actuations).

Torque control for gasoline and compression-ignition engines.

Series-hybrid H2ICE control (Simulink).

Knock control (Simulink)

Air-Fuel Ratio control (Simulink)

SCR control

DPF control

3.2 FC control (2 hours)

Control architecture; state manager; air path control; H2 path control; coolant path control.

3.3 Powertrain system level modelling (5 hours)

Powertrain model: series hybrid configuration; H2ICE configuration; BEV configuration

Readings/Bibliography

Gasoline Engine Management - Robert Bosch - Wiley

Diesel Engine Management - Robert Bosch - Wiley

L. Eriksson, L. Nielsen; Modeling and Control of Engines and Drivelines; Wiley

 

 

Teaching methods

The topics of the course will be presented by means of Power Point slides (shared with the students on the data exchange area, accessible after the students enroll in the distribution list), data from the literature, data collected in the labs and Simulink models, that will be explored in details during the lectures.

The students will visit the Sustainable Mobility Laboratory , where sustainable powertrain solutions are being developed, based on internal combustion engines and fuel cells. 

Assessment methods

Oral examination (one hour approximately).

The student will be asked to explain in details the structure of Simulink models for the simulation and control of:

- vehicle

- ICE

- Battery Electric Powertrains

- Fuel Cells Electric Powertrains

- Hybrid Powertrains

The exam consists of two questions regarding the Simulink models and one question regarding the first topic of the program. The two questions regarding the Simulink models may be replaced by a Simulink project proposed by the student, agreed with the professor.

Each answer will grant up to 10 points, the final grade is the sum of the points earned in the three questions. The project presentation wil grant up to 20 points. The program is available on the data exchange area at the end of the course.

The exam dates are communicated in advance through the AlmaEsami web platform of the University of Bologna. It is possible to enroll to the exam from 10 to 5 days before the exam date. At the time of the exam the student must show an identification document.

Teaching tools

The students will be given presentations referring to the topics listed in the program, as well as other material from the literature.

Simulink models explored during classes will be shared with the students.

Office hours

See the website of Enrico Corti