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Model-Based Control of a Turbocharged Diesel Engine with High- and Low-Pressure Exhaust Gas / Titelei/Inhaltsverzeichnis
Model-Based Control of a Turbocharged Diesel Engine with High- and Low-Pressure Exhaust Gas / Titelei/Inhaltsverzeichnis
Contents
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Titelei/Inhaltsverzeichnis
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1–7
1 Introduction
1–7
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1.1 Thesis Objective
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1.2 Thesis Outline and new Contributions
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8–11
2 Engine Configuration and Modelling
8–11
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2.1 Engine Configuration with two EGR-Systems
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12–33
3 Semi-Physical Mean Value Engine Model
12–33
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3.1 Intake and Exhaust System
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3.2 Mean Value Cylinder Model
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3.3 Turbocharger
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3.3.1 Mass Flow Rate
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3.3.2 Turbocharger Power
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3.3.3 Turbocharger Heat Transfer
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3.4 Mean Value Engine Model Signal Flow Diagram
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3.5 Summary
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34–60
4 System Properties of the Air Path with HP- and LP-EGR
34–60
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4.1 Air Path System Analysis by Step Responses
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4.1.1 HP-EGR Actuator System Responses
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4.1.2 VGT-Actuator System Responses
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4.1.3 LP-EGR/ETH Actuator System Responses
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4.1.4 Time Constants and Process Gains of the Air Path Model
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4.1.5 Summarised Air Path Couplings in P-Canonical Structure
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4.1.6 Summary
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4.2 Stationary System Properties
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4.2.1 Properties of the Combined LP-EGR Actuators
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4.3 Air Content Dynamics
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4.4 Air Content Model
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4.5 Summary
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61–85
5 Emission and Combustion Models
61–85
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5.1 Intake and Exhaust System Dynamics
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5.2 Measurement Design
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5.3 Stationary Emission and Combustion Models
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5.3.1 Suitable Model Inputs and Outputs
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5.3.2 Global-Local Polynomial Model Approach
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5.3.3 Extrapolation Measure
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5.3.4 Model Results
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5.3.5 Intersection Plots of the Emission Model
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5.4 Models for the Dynamical Emissions
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5.5 Summary
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86–101
6 Optimisation of the Reference Values for the Air Path Control
86–101
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6.1 Stationary Reference Value Optimisation
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6.2 Dynamical Reference Value Optimisation
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6.2.1 Dynamical Emissions of Different Air Path Control Concepts
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6.2.2 Multi-Criteria Optimisation of Dynamical Reference Values
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6.3 Summary
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102–167
7 Air Path Control Design and Dynamical Reference Value Generation
102–167
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7.1 Air Path Control Scheme
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7.2 Control Structure for HP-EGR and Charge-AirPressure
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7.3 Decentralised PI(D)-Controllers for HP-EGR and Charge-Air Pressure
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7.4 Semi-Physical Feedforward Control for HP-EGR and Charge-AirPressure
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7.4.1 Turbocharger Model Inversion
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7.4.2 Model-Inversion Model Follow-Up Control
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7.4.3 HP-EGR Model-Inversion
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7.4.4 Model Follow-Up Control Simulation
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7.4.5 Further Aspects on Charge-Air Pressure Control
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7.4.6 Signal Flow Diagram
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7.4.7 Conclusions on the Semi-Physical Feedforward Control
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7.5 Semi-Physical Internal Model Control for HP-EGR and Charge-Air Pressure
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7.6 Engine Test Bench Control Results for HP-EGR and Charge-AirPressure
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7.7 Semi-Physical Control for the LP-EGR Path
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7.8 Dynamical Reference Value Generation for HP- and LP-EGR
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7.8.1 Reference Value Generation Scheme
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7.8.2 Invariance to Modelling and Measurement Uncertainties
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7.8.3 Engine Test Bench Measurements
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7.9 Dynamical Driving Cycle Emissions of Different Control Concepts
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7.9.1 Dynamical Emissions of the HP-EGR Series Calibration
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7.9.2 Dynamical Emissions of the Dual EGR-Path Calibration
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7.9.3 Essential Findings of Sect. 7.9
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7.10 Summary
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168–171
8 Conclusions
168–171
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172–189
Appendix
172–189
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A Test Facilities
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B Exhaust Temperature Model
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C EGR-Valve Characteristic Shaping
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D Gas Mass Storage in Intake Volumes
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E Emission and Combustion Models
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190–204
Bibliography
190–204
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Model-Based Control of a Turbocharged Diesel Engine with High- and Low-Pressure Exhaust Gas
Titelei/Inhaltsverzeichnis
Autoren
Matthias Patrick Alexander Mrosek
DOI
doi.org/10.51202/9783186803122-I
ISBN print: 978-3-18-380312-5
ISBN online: 978-3-18-680312-2
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