Comparative fuel economy with gasoline and with alcohol-gasoline blends

Light weight materials which possess high strength and durability are being utilized by the automotive industry to increase fuel economy. Rapidly solidified (RS) Al alloys are currently being extensively studied for this purpose. In this investigation the microstructure of an extruded Al-8Fe-2Mo alloy, produced by Pratt & Whitney Aircraft, Goverment Products Div. was examined in a JE0L 2000FX AEM. Both electropolished thin sections, and extraction replicas were examined to characterize this material. The consolidation procedure for producing this material included a 9:1 extrusion at 340°C followed by a 16:1 extrusion at 400°C, utilizing RS powders which have also been characterized utilizing electron microscopy.

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The Relation of Locomotive Maintenance to Fuel Economy

Scientific American ◽

10.1038/scientificamerican07061918-11asupp ◽

1918 ◽

Vol 86 (2218supp) ◽

pp. 11-11

Author(s):

Frank McManamy

Keyword(s):

Fuel Economy

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Fuel Economy in Blast Furnaces

Scientific American ◽

10.1038/scientificamerican08101918-95bsupp ◽

1918 ◽

Vol 86 (2223supp) ◽

pp. 95-95

Keyword(s):

Fuel Economy ◽

Blast Furnaces

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Fuel Economy

Scientific American ◽

10.1038/scientificamerican08241918-123bsupp ◽

1918 ◽

Vol 86 (2225supp) ◽

pp. 123-123

Keyword(s):

Fuel Economy

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Innovations in Fuel Economy and Sustainable Road Transport

10.1533/9780857095879 ◽

2011 ◽

Keyword(s):

Fuel Economy ◽

Road Transport

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Commercial Trailer Tires: Tire Inflation and Its Effect on Rolling Resistance, Fuel Economy, and Tire Footprint

Tire Science and Technology ◽

10.2346/tire.15.430201 ◽

2015 ◽

Vol 43 (2) ◽

pp. 144-162

Author(s):

Al Cohn

Keyword(s):

Fuel Economy ◽

Rolling Resistance ◽

Maintenance Cost ◽

Wear Loss ◽

Truck Tires ◽

Footprint Analysis ◽

Subsequent Loss ◽

Resistance Data

ABSTRACT Maintaining proper tire inflation is the number one issue facing commercial fleets today. Common, slow-leaking tread area punctures along with leaking valve stems and osmosis through the tire casing lead to tire underinflation with a subsequent loss in fuel economy, reduction in retreadability, tread wear loss, irregular wear, and increase in tire-related roadside service calls. Commercial truck tires are the highest maintenance cost for fleets second only to fuel. This article will examine tire footprint analysis, rolling resistance data, and the effect on vehicle fuel economy from tires run at a variety of underinflated, overinflated, and recommended tire pressures. This analysis will also include the tire footprint impact by running tires on both fully loaded and unloaded trailers. The footprint analysis addresses both standard dual tires (295/75R22.5) along with the newer increasingly popular wide-base tire size 445/50R22.5.

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