model-based calibration of hd engines - engine and vehicle ...model-based calibration of hd engines...
Post on 21-Mar-2020
13 Views
Preview:
TRANSCRIPT
Benjamin Tilch, Rico Möllmann, Axel Steinmann, Dr. Reza Rezaei
GT-SUITE Conference, Frankfurt, October 2014
Model-based Calibration of HD Engines
Model-based Calibration of HD Engines Contents
IAV 10/2014 BTi
• Introduction and motivation
• Model based calibration methodology
• Calibration of engine protection functions
• Conclusion
2
Model-based Calibration of HD Engines Contents
IAV 10/2014 BTi
• Introduction and motivation
• Model based calibration methodology
• Calibration of engine protection functions
• Conclusion
3
• First model setup
and validation
• Potential
determination
• Component
Investigations
• Concept layout
• Periphery design
Powertrain
Calibration / Test
Vehicle
Calibration / Test
System- / Function
Development
Concept /
Design
Introduction and motivation Continuous Use of Physical Simulation
• Continuous model
adjustment
• Choice of
components
• Function
development
• First “desk”
calibration
• MIL/SIL tests
• Robustness testing
• Continuous model
adjustment
• Trouble-shooting from
“Back-office”
• HIL-tests
• Model-based calibration
• Extrapolation of
boundary conditions
(altitude, climate)
IAV 10/2014 BTi 4
ICE
EAT
Vehicle
Combustion
• First model setup
and validation
• Potential
determination
• Component
Investigations
• Concept layout
• Periphery design
Powertrain
Calibration / Test
Vehicle
Calibration / Test
System- / Function
Development
Concept /
Design
Introduction and motivation Continuous Use of Physical Simulation
• Continuous model
adjustment
• Choice of
components
• Function
development
• First “desk”
calibration
• MIL/SIL tests
• Robustness testing
• Continuous model
adjustment
• Trouble-shooting from
“Back-office”
• HIL-tests
• Model-based calibration
• Extrapolation of
boundary conditions
(altitude, climate)
IAV 10/2014 BTi 5
ICE
EAT
Vehicle
Combustion
Model-based Calibration of HD Engines Contents
IAV 10/2014 BTi
• Introduction and motivation
• Model based calibration methodology
• Calibration of engine protection functions
• Conclusion
6
Model-Based Calibration Methodology Virtual Development Platform
IAV 10/2014 BTi
7
INCA
COM
Interface
Read / Write
Calibration Data
INCA-FLOW®
ETK/CCP
Simulation
X86 C
on
tro
ller
Engine Dyno
Test Vehicle
ECU
ICE- and EAT-Model Soft-ECU
Sensor-
and
Actuator
Models
Standard-Application Process
Model-Based Calibration
Object Code from
Ascet / Simulink / GT SUITE RT
Intecrio *.a2l-file
IAV 10/2014 BTi
Model-Based Calibration Methodology Software Tool Chain
IAV 10/2014 BTi
8
Simulation
ICE- and EAT-Model Soft-ECU
Sensor-
and
Actuator
Models
Model-Based Calibration
Object Code from
Ascet / Simulink / GT-SUITE-RT
Intecrio *.a2l-file
IAV
Phenomenological
Combustion Model
Engine Model
GT-SUITE /
GT-SUITE-RT
Engine Control
Ascet
EAT Control
Simulink
INCA INCA-FLOW
ETAS INTECRIO
*.a2l-file
IAV 10/2014 BTi
Model-Based Calibration Methodology Coupling GT Models to Tool Chain
.six
Variant 1
C++ Compiler
s-function
Simulink Coder
.six GT-POWER Simulink
ASCET .a2l INTECRIO INCA
Variant 2
GT-SUITE-RT
.dat
Simulink Coder
.six GT-POWER Simulink
IAV 10/2014 BTi
Model-Based Calibration Methodology Open-Loop vs. Closed Loop Calibration
• Calibration of functions for
steady-state operation,
min/max-values etc.
• Preparation of maps based on
simulation results
• Validation on engine test bench
• e.g. NH3 dosing (map filling)
• Calibration of functions for
transient operation
• Model/Software-In-the-Loop
Simulation
• Validation on engine test bench
• e.g. soot loading, NH3 storage,
in cylinder measures
x x
„Open-Loop“ Calibration
„Closed-Loop“ Calibration
+
10 IAV 10/2014 BTi
Model-based Calibration of HD Engines Contents
• Introduction and motivation
• Model based calibration methodology
• Calibration of engine protection functions
• Conclusion
11 IAV 10/2014 BTi
12
Model-Based Calibration Method Calibration Engine Safety Functions
• Calibration of engine safety functions under extreme conditions like altitude,
coldness or even damages in engine parts like blocking the intake air path.
• The complete engine model was calibrated and validated with steady-state
measurements (engine map) and transient measurements (NRTC).
• The IAV physical-based combustion model is applied for a predictive simulation.
• A good match between measurement and simulation results is achieved.
IAV 10/2014 BTi
13
• Example results of the IAV phenomenological combustion model (A: 1200 min-1, B: 1500 min-1, C: 1900 min-1 ;
25 % - 100 % Load). See also SAE International Journal of Engines 5(3): 2012 und SAE 2012-01-1065
Model-Based Calibration Method Engine Process and Combustion Modeling
IAV 10/2014 BTi
14
Model-Based Calibration Method Calibration Engine Safety Functions
• Validation of the model-based
calibration engine safety function in
real-life cycle at ca. 800m altitude.
• Failure case: Blocking of the waste-
gate valve which leads to high
turbocharger temperature and speed.
• The failure is detected by exceeding
the boost pressure to the limit which is
given as input to the model.
• The failure is detected by the model,
the boost protection modus is
activated.
• In protection modus, the injected fuel
mass is reduced to decrease the
temperature and also TC-speed.
IAV 10/2014 BTi
Model-based Calibration of HD Engines Contents
• Introduction and motivation
• Model based calibration methodology
• Calibration of engine protection functions
• Conclusion
15 IAV 10/2014 BTi
top related