Browse Publications Technical Papers 790929
1979-02-01

Fuel Economy Trends in Passenger Car Fleets - Effects of Emissions Controls 790929

Records for 20,728 passenger cars covering 1967 through 1977 models were analyzed to see the effects of emissions controls on fuel economy. Data on weight, engine displacement, compression ratio, carburetion, transmission type, axle ratio, air conditioning, and miles driven per month were obtained for each car. Linear regression analyses of these data showed design changes during this period affected fuel economy significantly. Around 1973, there were appreciable decreases in fuel economy relative to 1967 models, whereas for 1975 through 1977 increases were observed. Fuel economy for cars meeting California emission standards was lower than for those meeting Federal standards.

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

Simulated Sensitivities of Auto Fuel Economy, Performance and Emissions

760157

View Details

JOURNAL ARTICLE

Aerodynamic Drag and Engine Cooling Effects on Class 8 Trucks in Platooning Configurations

2015-01-2896

View Details

JOURNAL ARTICLE

Using Transmission Data to Isolate Individual Losses in Coastdown Road Load Coefficients

2020-01-1064

View Details

X