Modelon Ab · OMXSTO:MODEL

Modelon Ab — Technical Presentation (2021)

27 slides from Modelon Ab's technical presentation, 2021

Slide 2: Agenda
AGENDA ❑ About Engine dynamics library ❑ Key Features ❑ Key Capabilities ❑ Key Applications ❑ Library Contents ❑ Modelon Compatibility ❑ Latest Release ©2021 Modelon. 2
Slide 3: About Engine Dynamics Library
ABOUT ENGINE DYNAMICS LIBRARY • Modelica library for simulation of combustion engine systems, including air path management and gas exchange with focus on the gas dynamics. • Transient dynamics and steady state performance of engine systems • Mean-value combustion models for both SI and CI engines •
Slide 4: Key Benefits
KEY BENEFITS • Physical gas exchange modeling • Mean value combustion model • Flexible model options for torque, heat generation, emissions • Capture dynamics and steady state performance of engine systems • Wide range of engine and fluid component models • Engine system templates and examples for r
Slide 5: Key Capabilities
KEY CAPABILITIES • Diesel and spark-ignited engines • Capture essential system behavior such as non-minimum phase and sign reversal effects • Transient exhaust condition modeling and emissions • Virtual prototyping on system level • Drivability analysis • SiL simulation with engine control system •
Slide 7: Key Applications
KEY APPLICATIONS • Model of an engine in a test cell with fixed speed & ramped fuel injection. • Spark ignited engine • Boost pressure • Vehicle Thermal Management (VTM) 2018-08-08 ©2021 Modelon. 7
Slide 8: Example: Fuel Ramp Turbo Charged Engine
EXAMPLE: FUEL RAMP TURBO CHARGED ENGINE This is an example simulation model illustrating how engine test cell simulations can be performed. The engine is assumed to be mounted to an electrical dynamometer that directly controls the engine speed. ©2021 Modelon. 8
Slide 9: Example: Spark Ignited Engine
EXAMPLE: SPARK IGNITED ENGINE Test model for the entire engine system with dynamic measured signal as input. To create an experiment, extend from this model and redeclare the engine with a configured one. Then chose parameters and initial values in the drop-down menus in the engine parameter dialog.
Slide 10: Boost pressure step response to EGR valve actuation
CASE STUDY Boost pressure step response to EGR valve actuation Objective The EGR valve model is validated with part load map data. Upstream and downstream pressures are prescribed and the simulated EGR flow rate is compared to measurements EGR flow model validation. EGR flow [kg/s], simulated (solid
Slide 11: Vehicle Thermal Management (VTM)
CASE STUDY Vehicle Thermal Management (VTM) Objective Balancing system level requirements for cooling and energy usage Controlled temperature Results • Multi-domain physical modeling approach for energy conservation across domains (mechanical, thermal, electrical, thermofluid) and vehicle thermal ma
Slide 13: Library Contents
LIBRARY CONTENTS • Engines • Cylinder component • Turbo components • Heat exchangers • Volumes • Pipes • Valves • Media models • Sources • Sensors • FlowModifiers ©2021 Modelon. 13
Slide 14: Library Contents: Cylinder
LIBRARY CONTENTS Cylinder • CI (Compression ignition) • SimpleCICylinder • MapBAsedCylinder • SI (Spark ignited) • SimpleSICylinder • Templates • CylinderBase (This template defines a minimal interface of connectors and parameters as well as basic physical equations for a MVM) ©2021 Modelon. 14
Slide 15: Library Contents: Cylinder Correlations
LIBRARY CONTENTS Cylinder Correlations • The properties that must be assigned are: • Volumetric efficiency • Energy conversion efficiency, η = Indicated MEP / Fuel MEP • Mechanical friction torque • Exhaust gas temperature • Emission concentrations, as defined by medium model • Torque during engine
Slide 16: Library Contents: Turbo
LIBRARY CONTENTS Turbo • Compressor • Compressor & Compressor_velocity • Turbine • Turbine & Turbine_velocity • VGTTurbine & VGTTurbine_Velocity • All are parameterized by maps of: • Corrected mass flow • Isentropic efficiency • Corrected speed • Pressure ratio Note: Turbo components are flow models
Slide 17: Library Contents: HeatExchangers
LIBRARY CONTENTS HeatExchangers • ExhaustLiquid • TableBasedEfficiency • EpsNTU • AirLiquid • TableBasedEfficiency • EpsNTU • AirAir • TableBasedEfficiency • EpsNTU Note: The heat exchangers are flow models – use them between volume models or pressure sources for good numeric. The friction model is
Slide 18: Library Contents: Volumes
LIBRARY CONTENTS Volumes Several volume components are available • Storage of mass and energy, assumes ideal mixture • Introduce state variables for • Pressure, Temperature, and Mass fractions and trace from medium model • Via parameters it is possible to include • Wall heat capacity & Heat trasfer
Slide 19: Library Contents: Pipes
LIBRARY CONTENTS Pipes • Pipe components for air, exhaust gas and coolant are available. • The pipe component can model any component where friction and heat transfer are the dominant effects, including coolers. • Friction and heat transfer correlations are selectable using the parameter dialog • Us
Slide 20: Library Contents: Media Models
LIBRARY CONTENTS Media Models • Air • 4-component mixture (H2O, O2, N2, Ar) – Full NASA • 4-component mixture (H2O, O2, N2, Ar) – Linear Cp • 1-component (Dry air) – Linear Cp • Exhaust gas • 5-component mixture (CO2, H2O, O2, N2, Ar) – Full NASA, with trace components (NOx, Soot, Hydrocarbons, CO)
Slide 21: Library Contents: Basic Components
LIBRARY CONTENTS Basic Components • FlowModifiers • Sources • Sensors ©2021 Modelon. 21
Slide 23: Recommended Modelon Library Compatibility
RECOMMENDED MODELON LIBRARY COMPATIBILITY • Engine Dynamics Library components are seamless compatible with HeatExchanger Library, VaporCycle Library, Liquid Cooling Library and Vehicle Dynamics Library. • Engine Dynamics Library compatible with Modelon product FMI Toolbox ©2021 Modelon. 23
Slide 24: Example: Drivability
EXAMPLE : DRIVABILITY Problem: Engine and drive line control balancing energy consumption and drivability. Solution: Model-based system design/optimization and control design Tools: Dymola + Engine Dynamics Library + Vehicle Dynamics Library Partner: OEM ©2021 Modelon. 24
Slide 25: Example: A Workflow Example
EXAMPLE : A WORKFLOW EXAMPLE Using the Functional Mock-up Interface, state-of-the-art physical models becomes accessible in each state-of-art tool. Workflow of analyze a Modelica model in MATLAB using Modelon’s Functional Mock-up Interface for MATLAB ©2021 Modelon. 25
Slide 27: Release: 2021.2 Enhancements
RELEASE: 2021.2 Enhancements • Version 2.7 is updated for use with Modelon Base Library 3.7 ©2021 Modelon. 27

Modelon — Technical Presentation (2021) on 6ix

Modelon Ab — Technical Presentation (2021)

Slide 1: Engine Dynamics Library Overview

Slide 2: Agenda

Slide 3: About Engine Dynamics Library

Slide 4: Key Benefits

Slide 5: Key Capabilities

Slide 6: Key Applications

Slide 7: Key Applications

Slide 8: Example: Fuel Ramp Turbo Charged Engine

Slide 9: Example: Spark Ignited Engine

Slide 10: Boost pressure step response to EGR valve actuation

Slide 11: Vehicle Thermal Management (VTM)

Slide 12: Library Contents

Slide 13: Library Contents

Slide 14: Library Contents: Cylinder

Slide 15: Library Contents: Cylinder Correlations

Slide 16: Library Contents: Turbo

Slide 17: Library Contents: HeatExchangers

Slide 18: Library Contents: Volumes

Slide 19: Library Contents: Pipes

Slide 20: Library Contents: Media Models

Slide 21: Library Contents: Basic Components

Slide 22: Modelon Compatibility

Slide 23: Recommended Modelon Library Compatibility

Slide 24: Example: Drivability

Slide 25: Example: A Workflow Example

Slide 26: Latest Release

Slide 27: Release: 2021.2 Enhancements