Vehicle thermal Management Systems Conference and Exhibition (VTMS10)

This book contains the papers presented at the IMechE and SAE International, Vehicle Thermal Management Systems Conference (VTMS10), held at the Heritage Motor Centre, Gaydon, Warwickshire, 15-19th May 2011. VTMS10 is an international conference organised by the Automobile Division and the Combustion Engines and Fuels Group of the IMechE and SAE International. The event is aimed at anyone involved with vehicle heat transfer, members of the OEM, tier one suppliers, component and software suppliers, consultants, and academics interested in all areas of thermal energy management in vehicles. This vibrant conference, the tenth VTMS, addresses the latest analytical and development tools and techniques, with sessions on: alternative powertrain, emissions, engines, heat exchange/manufacture, heating, A/C, comfort, underhood, and external/internal component flows. It covers the latest in research and technological advances in the field of heat transfer, energy management, comfort and the efficient management of all thermal systems within the vehicle.

• Aimed at anyone working in or involved with vehicle heat transfer
• Covers research and technological advances in heat transfer, energy management, comfort and efficient management of thermal systems within the vehicle

Auteur

The Institution of Mechanical Engineers (IMechE) is one of the leading professional engineering institutions in the world.

Contenu

Cover image

Title page

Copyright

Co-Chairmen's welcome message

Heat and A/C

Chapter 1: A practical approach to R-1234yf thermophysical property calculation and A/C system cycle analysis

ABSTRACT

1 INTRODUCTION

2 DEVELOPMENT OF THERMOPHYSICAL RELATIONSHIPS

3 A/C SYSTEM CYCLE ANALYSIS & DISCUSSION

4 CONCLUSIONS

ACKNOWLEDGEMENT

Chapter 2: Automotive material investigation with low GWP refrigerant HFO-1234yf

ABSTRACT

1 INTRODUCTION

2 THERMODYNAMIC PROPERTIES

3 FLAMMABILITY

4 THERMAL STABIILITY

5 MATERIAL COMPATIBILITY

6 LUBRICANT MISCIBILITY

7 SUMMARY AND CONCLUSIONS

Chapter 3: Numerical investigation of energy-efficient heat-up strategies considering a comprehensive HVAC-system

ABSTRACT

1 INTRODUCTION

2 SYSTEM MODELLING

3 MODEL VALIDATION

4 SIMULATION RESULTS

5 CONCLUSION

Heat Exchange/Manufacture

Chapter 4: Flux free brazing of aluminium heat exchangers

ABSTRACT

1 INTRODUCTION

2 EXPERIMENTAL

3 RESULTS AND DISCUSSION

4 CONCLUSIONS

5 ACKNOWLEDGEMENT

Chapter 5: Corrosion of aluminium Charge Air Coolers in exhaust gas condensates - application to Exhaust Gas Recirculation systems

1 INTRODUCTION

2 STATE OF THE ART

3 CORROSION PROCEDURE DESIGN

4 EXHAUST GAS CONDENSATE ANALYSIS

5 CONCLUSION

Chapter 6: A methodology for evaluation of charge air coolers for low pressure EGR systems with respect to corrosion

ABSTRACT

SYMBOLS AND ABBREVIATIONS

1 INTRODUCTION

2 APPROACH

3 RESULTS

4 SUMMARY

Chapter 7: New approach in microstructural analysis of a modified AA4XXX/AA3XXX brazing sheet before and after brazing

ABSTRACT

1 INTRODUCTION

2 EXPERIMENTAL PROCEDURE

3 RESULTS

4 DISCUSSION

5 CONCLUSIONS

6 ACKNOWLEDGMENTS

Chapter 8: Graphite foam heat exchanger for vehicles

ABSTRACT

NOMENCLATURE

Greek Symbols

Subscripts

1 INTRODUCTION

2 PHYSICAL MODEL AND ASSUMPTIONS

3 MATHEMATICAL FORMULATION AND NUMERICAL METHOD

4 RESULTS AND DISCUSSION

5 CONCLUSION AND RECOMMENDATION

6 ACKNOWLEDGMENT

Chapter 9: Flat panels heat exchangers to improve the thermal management

ABSTRACT

1 INTRODUCTION

2 PROTOTYPE HEAT EXCHANGERS

3 VEHICLE DEMONSTRATOR

4 CONCLUSIONS AND NEXT STEPS

Chapter 10: The Wilson Plot - why it doesn't work and what to do about it

ABSTRACT

1 INTRODUCTION

2 INACCURACY OF THE WILSON PLOT

3 THE NEW APPROACH

4 ANALYSIS PROCESS

5 DISCUSSION AND CONCLUSION

ACKNOWLEDGEMENTS

Chapter 11: Information for HFO-1234yf automotive plant and service shop implementation

ABSTRACT

1 INTRODUCTION

2 FLAMMABILITY PROPERTIES OF HFO-1234yf

3 POTENTIAL EU AUTOMOTIVE OEM PLANT IMPLEMENTATION STRATEGIES

4 INFORMATION FOR AIR CONDITIONING SERVICE SHOP IMPLEMENTATION

5 SUMMARY AND CONCLUSIONS

Engines

Chapter 12: Spatially resolved heat flux measurements from a HSDI engine over NEDC

ABSTRACT

1 INTRODUCTION

2 EXPERIMENTAL SET-UP

3 EXPERIMENTAL APPROACH

4 RESULTS AND DISCUSSION

5 CONCLUSION

Chapter 13: Investigation of temperature fields during stop-start operation of a spark ignition engine and the effect on engine behaviour after a restart

ABSTRACT

1 INTRODUCTION

2 ENGINE INSTRUMENTATION

3 EXPERIMENTAL INVESTIGATIONS

4 DISCUSSION AND CONCLUSIONS

ACKNOWLEDGEMENTS

Chapter 14: A thermistor-based instrument for measuring vehicle cooling airflow

ABSTRACT

1 INTRODUCTION

2 THERMISTOR ANEMOMETRY

3 EXPERIMENTAL METHOD

4 RESULTS AND DISCUSSION

5 CONCLUSIONS

ACKNOWLEDGEMENTS

Chapter 15: Identification and optimization of the powertrain thermal system

ABSTRACT

1 INTRODUCTION

2 CONSTRUCTION OF THERMAL MODEL

3 HYBRID EVOLUTIONARY ALGORITHM

4 PARAMETER IDENTIFICATION

5 THERMAL SYSTEM OPTIMIZATION

6 CONCLUSION

7 ACKNOWLEDGMENT

Chapter 16: Analysis of energy flows in engine coolant, structure and lubricant during warm-up

ABSTRACT

1 INTRODUCTION

2 BACKGROUND

3 METHODOLOGY

4 RESULTS

5 DISCUSSION

6 CONCLUSIONS

7 ACKNOWLEDGMENTS

Chapter 17: Thermal coupling and energy flows between coolant, engine structure and lubricating oil during engine warm up

ABSTRACT

2 INTRODUCTION

3 PROMETS

4 INVESTIGATIONS OF WARM-UP AND FUEL CONSUMPTION

5 DISCUSSION AND CONCLUSION

ACKNOWLEDGEMENT

Chapter 18: A high-resolution warm-up simulation model for a gasoline engine with advanced thermal control

ABSTRACT

1 INTRODUCTION

2 GENERAL CONCEPT OF WARM-UP SIMULATION

3 THE INTERACTION OF SIMULATION MODULES

4 HIGH-RESOLUTION SIMULATION MODULES

5 MODEL CALIBRATION FOR STATIONARY OPERATION

6 WARM-UP SIMULATION FOR THE NEDC

7 CONCLUSION

Chapter 19: Powertrain thermal modeling for vehicle simulation

ABSTRACT

NOTATION

1 INTRODUCTION

2 NUMERICAL METHODS

3 RESULTS

4 CONCLUSION

Chapter 20: The effectiveness of heating parts of the powertrain to improve vehicle fuel economy during warm-up

ABSTRACT

1 INTRODUCTION

2 MODEL DEVELOPMENT AND EVALUATION

3 INFLUENCING WARM-UP AND FUEL CONSUMPTION

4 CONCLUSIONS

ACKNOWLEDGMENT

Chapter 21: A novel EGR system to improve engine performance of a diesel engine

ABSTRACT

INTRODUCTION

EXPERIMENTAL APPARATUS

NEDC KEY POINT FOR STATIONARY ENGINE TEST

EGR COOLER CHARACTERISTICS FOR OPERATING CONDITIONS

EFFECT OF ENGINE PERFORMANCE BY EGR GAS TEMPERATURE

CONCLUSIONS

Chapter 22: CFD simulation of the fouling process in EGR coolers

ABSTRACT

2 INTRODUCTION

3 DEPOSITION MECHANISMS

4 NUMERICAL MODELLING

5 RESULTS

6 CONCLUSION AND OUTLOOK

7 ACKNOWLEDGEMENTS

Alternative Powertrain

Chapter 23: Development of cooling system sign-off criteria for hybrid vehicles

ABSTRACT

1 INTRODUCTION

2 CUSTOMER EXPECTATIONS FOR HYBRID VEHICLE EV MODE AVAILABILITY (RISK ANALYSIS)

3 DEVELOPMENT OF NEW COOLING SYSTEM SIGN-OFF CRITERIA FOR HYBRID VEHICLES

4 Drive Cycle Validation Via Initial Physical Testing

5 CONCLUSIONS

Chapter 24: Evaluation of TEG potential in Hybrid Electric Vehicle by simulation

ABSTRACT

1 INTRODUCTION

2 TEG DETAILED MODEL

3 VEHICLE SIMULATION WITH TEG

4 CONCLUSIONS

5 ACKNOWLEDGEMENTS

Chapter 25: Balancing vehicle energy performance and thermal comfort: benefits of a multi-domain system simulation approach in the case of a power-split hybrid-electric vehicle

ABSTRACT

1 INTRODUCTION

2 DEVELOPMENT SCENARIO: OVERVIEW

3 STEP 1 - ENERGY MANAGEM…