The Importance of Production Emissions in Vehicle Life Cycle Assessment
- 2018-11-27 13:06:00
- LUQIMENG Original
- 2441
Life Cycle Emissions and Regulations
Material Production Emissions
UCSB Automotive Materials GHG Comparison Model v4
? Calculates life cycle GHG emissions and energy consumption associated with vehicle lightweighting by material substitution
? Developed by Dr. Roland Geyer, University of California, Santa
Barbara (UCSB)
? Peer-reviewed by panel of experts, including steel and aluminum representatives
? Free to download from WorldAutoSteel website: www.okaksab.cn
Attributional UCSB Modeling
? Vehicle Types:
? Mid-size sedan
? SUV
? Pick-up Truck
? Hybrid electric vehicle (HEV)
? Battery electric vehicle (BEV)
? Scenarios:
1. Default baseline vehicles (MY 2007)
2. Updated baseline vehicles (MY 2013)
3. Future pick-up truck (2025)
? Sensitivity Assessments and Monte Carlo Analysis
Updated Baseline Scenarios Results
Future (2025) Pick-up Truck Example
? Light-duty pick-up truck (Crew Cab / Long Box)
? Material quantities based on actual vehicles
? 2025 material production and recycling parameters
? Equivalent fuel economies for contender vehicles set to 2025 CAFE target of 30.6 mpg
Summary
? Automakers are facing increasingly stringent fuel economy targets.
? The use of carbon-intensive lightweighing materials to meet driving phase regulations can result in higher total vehicle life cycle emissions.
? Ensuring improvements in production phase emissions while reducing driving phase emissions avoids unintended consequences.
