Modeling and Control of IC-Engine Systems

• Guten Morgen!• Team• Objectives & Overview• Exercises• Style

Team• Chris Onder

onder@ethz.chML K38, Tel. 044 63 2 2466

• Raffael Hedinger hraffaela@ethz.chML K40.2, Tel. 044 63 2 4939

• Johannes Ritzmannjritzman@idsc.mavt.ethz.chML K40.2, Tel. 044 63 2 6521

• Dimitri Mankov (teaching assistant)

Objectives• Based on

– Mechanics– Thermodynamics– Fluiddynamics– Electric and Electronic Engineering

• Systems Theory as a general toollecture System Modeling

• learn how to improve dynamic systems (“synthesis”)

• systematic (“model based”) optimization (system design, controls, …)

• IC engine as an ideal object for that

Didactic Concept, Lecture Part

• Introduction (today)• Mathematical models of most important engine

components (continuous time)• Synthesis of large models• Discrete event (discrete time) models• Controller design for continuous and discrete

systems (several examples)

Didactic Concept, Exercise part:

• Work through all steps of a control design project

• Work in teams• verify design using experiments• First project: intake manifold (“dry run”)• Exercises related to lecture/book• Second project: design of a simplified idle

speed controller for a VW 2.5 l SI engine

Engine Systems – Exercise Classes

Time and Place:Mondays, 12.15-13.00, ML H41.1

Assistants: Raffael Hedinger (hraffaela@ethz.ch)Johannes Ritzmann (jritzman@idsc.mavt.ethz.ch)

Web site:http://www.idsc.ethz.ch/Courses/engine_systems

Engine Systems – Exercise Classes

Structure: Group work:

Weeks 1-4: Modeling of an intake manifold in Matlab/Simulink using measurements from a real engine

Weeks 5-13: 1. Modeling of a complete engine (mean value model), including taking your own measurements at the test bench2. Synthesis of a model-based idle-speed controller3. Competition of all controllers – win a pizza voucher for your team

Individual effortWeeks 1-13: Theory exercises will be handed out on a regular basis

Engine Systems – Exercise Classes

Useful information:• You will form groups of 4 people in the first exercise class• An extensive exercise instruction script will be made available

online during the first week of the course• You can find the class facts sheet online – it contains all information

concerning deadlines etc.• Solving the exercises or attending the exercise classes is not

mandatory, however, we can not stress enough that understanding the theory helps a lot at the oreal exam.

• The class text book will be made available as .pdf-file• Last but not least: We love teaching and it is important to us that you

understand the material taught in class. However, there are no official office hours. If you have questions that we did not answer in the exercise class, just send us a mail and we will arrange a meeting.

# Date Topic Reading

0 Sep 20 Extra Introductory Lecture -

1 Sept 25 Introduction, Goals, Administration, Examples, Wrap-up Operating Principles of IC Engines

1-2.1

2 Oct 2 Models I: Causality Diagrams, Air Path 2.2-2.3

3 Oct 9 Models II: Air path, Fuel path, A/F dynamics

2.3-2.4

4 Oct 16 Models III: Torque Production 2.5

5 Oct 23 Test Benches, Sensors, Actuators -

6 Oct 30 Models IV: Thermal Models 2.6

7 Nov 6 Models V: Emissions, TWC 2.7-2.8

8 Nov 13 Models VI: Emissions, SCR 2.9

9 Nov 20 Models VII: Discrete Event Modeling, Introduction, Crank-angle BasedModeling, Hardware, Interpretation ofMeasurements, Torque production, Air Mass Estimation, Fuel Path, ExhaustGas Mixing, EGR-Model

3-3.2

10 Nov 27 Guest Speaker -

11 Dec 4 Modern Engine Control Units, Torque Based Structure, A/F Control: Feedforward Evaluation

3.3-4.2

12 Dec 11 A/F control: Feedback: Switch-Type Control, Wide Range Control, MIMO-Control, Evaluation

4.3-4.5

13 Dec 18 SCR Control, Thermomanagement Control

-

Backup Date -

abroad = not in Switzerland

Modelling and Control of Internal Combustion Engine Systems

• Introduction

Motronic ME with ETC, SULEV, OBD II & RLFS

Diagnosis modulefor tank leakage

Carbon canisterCamshaft phaser*

Ignition coil/Spark plug

Fuel rail/Injector

Canister purgevalve

Air mass meter

Electroniccontrol unit

Diagnosislamp

Diagnosisinterface

Immobilizer

Accelerator pedal module

Throttledevice(ETC)

Knocksensor

Temp.sensor

Delivery module withlow pressure pump

3-waycatalyst*

Oxygensensor

Oxygensensor

Exhausttemperaturesensor*

Oxygen sensor (LSU)

Pre cat.

Main cat.

ETCOBDRLFS

=== * option

Bosch components

CAN

Speedsensor

Phasesensor

Sou

rce:

GS

/VS

A 6

400d

Electrical secondaryair pump*

Secondaryair valve*

Electronic Throttle ControlOn-Board Diagnosis SystemReturnless Fuel Supply System

Camshaft phaser:intake and/orexhaust phasing