Browse Publications Technical Papers 2001-01-0221
2001-03-05

Cold Start Impact on Vehicle Energy Use 2001-01-0221

This paper assesses the impact of the cold start phase of light duty vehicle use on energy use based on a review of large set of vehicle emissions test data from Canadian and U.S. Government databases. The data indicate that, at 24°C test ambient, a 20% increase in fuel use is measured in the “cold” Bag 1 driving compared with the “hot” Bag 3. Lower ambient conditions increase this penalty in a linear manner such that at the -6.7°C test condition, the penalty rises to 40-80%.
The paper then integrates the laboratory tests data with vehicle demographic and usage data gathered from consumer driving studies. Included in this data are results from a small pilot survey in Vancouver, which directly measured instantaneous fuel consumption of vehicles in consumer use. These data sets were then used to estimate the total “extra” energy used during the cold start phase of driving. The analysis indicates that in Canadian urban centres, up to 25% of the total fuel use is due to cold engine effects.

SAE MOBILUS

Subscribers can view annotate, and download all of SAE's content. Learn More »

Access SAE MOBILUS »

Preview Document Add to Cart
Members save up to 16% off list price.
Login to see discount.
Special Offer: Download multiple Technical Papers each year? TechSelect is a cost-effective subscription option to select and download 12-100 full-text Technical Papers per year. Find more information here.
We also recommend:
TECHNICAL PAPER

Cold Starting the Volvo Way

890043

View Details

TECHNICAL PAPER

On-road Testing and Characterization of Fuel Economy of Light-Duty Vehicles

2005-01-0677

View Details

JOURNAL ARTICLE

Development of a Fuel Economy and Exhaust Emissions Test Method with HILS for Heavy-Duty HEVs

2008-01-1318

View Details

X