Driver Influence on the Fuel
Consumption of a Hybrid
Electric Vehicle
Research on the Fuel Economy Benefits of the Burn
and Coast Driving Technique
Philip Jansen
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Table of Contents
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Motivation
Burn and Coast
Longitudinal Vehicle Dynamics
Optimization
State of Charge Correction
Results
Q&A
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• Rising cost of fuel
• Concerns over climate
change
• Exhaustion of fossil
fuels
• Legislation
Table of Contents
Motivation
Burn & Coast
Longitudinal Vehicle Dynamics
Optimization
State of Charge Correction
• Lower fuel consumption
• Lower emissions
• Price premium
Results
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Fuel Consumption Reduction Potential
Table of Contents
Motivation
Burn & Coast
Longitudinal Vehicle Dynamics
Optimization
State of Charge Correction
Results
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Operating Points of the Engine
Table of Contents
Motivation
Burn & Coast
Longitudinal Vehicle Dynamics
Optimization
State of Charge Correction
Results
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Burn and Coast Driving Technique
Table of Contents
Motivation
Burn & Coast
Longitudinal Vehicle Dynamics
Optimization
State of Charge Correction
Results
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Problem Statement
Table of Contents
Motivation
Burn & Coast
Longitudinal Vehicle Dynamics
Optimization
What fuel consumption
improvement can be achieved when
driving the burn and coast driving
technique compared to steady
speed driving with a parallel hybrid
electric vehicle?
State of Charge Correction
Results
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Longitudinal Vehicle Dynamics Model
Table of Contents
Motivation
Burn & Coast
Longitudinal Vehicle Dynamics
Optimization
State of Charge Correction
Results
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Longitudinal Vehicle Dynamics Model
Velocity Difference: 15 km/h
Table of Contents
4,84%
Motivation
Burn & Coast
Longitudinal Vehicle Dynamics
4,05%
Optimization
State of Charge Correction
Results
2,87%
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Longitudinal Vehicle Dynamics Model
Velocity Difference: 20 km/h
Table of Contents
Motivation
Burn & Coast
Longitudinal Vehicle Dynamics
Optimization
State of Charge Correction
Results
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Optimization of the Acceleration Phase
Table of Contents
Motivation
Burn & Coast
Longitudinal Vehicle Dynamics
Optimization
State of Charge Correction
Results
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Optimization of the Acceleration Phase
Table of Contents
Motivation
Burn & Coast
Longitudinal Vehicle Dynamics
Optimization
State of Charge Correction
Results
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State of Charge (SoC) Correction
• Two energy carriers
Table of Contents
Motivation
Burn & Coast
Longitudinal Vehicle Dynamics
Optimization
State of Charge Correction
• SoC Correction Methods
• SoC Balancing
• Linear Regression
• Average Efficiency Correction
Results
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Average Efficiency Correction
1.
2.
3.
SoC -> Electrical Energy
Electrical Energy -> Mechanical Energy
Mechanical Energy -> Fuel
Table of Contents
Motivation
Burn & Coast
Longitudinal Vehicle Dynamics
Optimization
State of Charge Correction
Results
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Comparison SoC Correction Methods
Table of Contents
Motivation
Burn & Coast
Longitudinal Vehicle Dynamics
Optimization
State of Charge Correction
Results
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Results
Table of Contents
Motivation
Burn & Coast
Longitudinal Vehicle Dynamics
Optimization
State of Charge Correction
Results
10,1%
31%
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Conclusion
• Burn and Coast saves fuel
• Up to speed where aerodynamic drag becomes dominant
• In free sailing mode
Future Research
• Adapting Control Strategy with bigger electric
motor/flywheel (Automation)
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Question & Answers
Philip Jansen
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Backup Slides
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Backup Slides
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