scholarly journals Model Year 2020 Fuel Economy Guide: EPA Fuel Economy Estimates

2020 ◽  
Author(s):  
None None
Keyword(s):  
Fuel Economy ◽  
Model Year

Emissions From Heavy-Duty Trucks Converted to CNG

1992 ◽  
Vol 114 (3) ◽  
pp. 561-567 ◽  
Author(s):  
S. G. Fritz ◽  
R. I. Egbuonu
Keyword(s):  
Natural Gas ◽  
Fuel Economy ◽  
Chassis Dynamometer ◽  
Heavy Duty ◽  
Compressed Natural Gas ◽  
Diesel Particulate ◽  
Energy Equivalent ◽  
Gasoline Engines ◽  
Gas Fuel ◽  
Model Year

Emissions are reported for four heavy-duty trucks, which were converted to operate on compressed natural gas fuel. Two 1988 model year Ford F700 Series trucks equipped with 7.0 L gasoline engines and two 1986 model year GMC trucks equipped with DDC 8.2 L diesel engines were tested on a heavy-duty chassis dynamometer in a baseline condition and again after conversion to natural gas. The vehicles were tested over the EPA Urban Dynamometer Driving Schedule for Heavy-Duty Vehicles and at no-load curb idle. Regulated emissions of NOx, CO, HC, and diesel particulate, along with nonmethane hydrocarbons, are reported in grams/mile. Fuel economy is reported in energy-equivalent miles per gallon of gasoline or diesel fuel.

scholarly journals A Comparison of Fuel Economy Results from EPA Tests and Actual In-Use Experience, 1974-1977 Model Year Cars

1978 ◽  
Author(s):  
Barry Mcnutt ◽  
Diane Pirkey ◽  
Robert Dulla ◽  
Craig Miller
Keyword(s):  
Fuel Economy ◽  
Model Year

Impact of Heavy-Duty Diesel Truck Activity on Fuel Consumption and Its Implication for the Reduction of Greenhouse Gas Emissions

2019 ◽  
Vol 2673 (3) ◽  
pp. 125-135 ◽  
Author(s):  
Sonya Collier ◽  
Chris Ruehl ◽  
Seungju Yoon ◽  
Kanok Boriboonsomsin ◽  
Thomas D. Durbin ◽  
...  
Keyword(s):  
Greenhouse Gas ◽  
Fuel Consumption ◽  
Fuel Economy ◽  
Phase 1 ◽  
Average Standard Deviation ◽  
Activity Data ◽  
Engine Model ◽  
Heavy Duty Diesel ◽  
Model Year ◽  
Haul Truck

Activity data from 79 line-haul and vocational trucks were analyzed to estimate trip-averaged fuel consumption per distance driven and per work performed. The 79 trucks had engine model years ranging from 2008 to 2015 and average (±standard deviation) miles per gallon of 5.5 ± 1.7, which is comparable to other large fleet studies. Engine output work used to overcome various forms of resistance was minimized at vehicle speeds between 54 and 60 mph, which led to best fuel economy. The average gallons-per-brake horsepower-hour (gal/BHP-HR) was 0.058 ± 0.0085. When comparing the gal/BHP-HR per trip speed, higher average trip speeds led to improved fuel economy (lower gal/BHP-HR). In the case of out-of-state line-haul trucks, fuel economy was also dependent on model year. The newer model year out-of-state line-haul truck (2014) had a significant improvement in fuel economy compared with the older model year trucks (2012 and 2013). This could be the result of more stringent CO2 emission standards beginning for model year 2014 trucks under the Phase 1 Greenhouse Gas rule, but data on more vehicles would further corroborate this. The trip-averaged CO2 emissions were calculated for each truck and it was found that some truck groups displayed consistent trip-averaged emissions whereas others displayed high variability despite belonging to the same fleet. Several of the trucks engaged in significant idling, with a median contribution to their CO2 emissions of 4.2%.

Fuel Economy of 1973 and 1974 Model Year Automobiles

1974 ◽  
Vol 42 (6) ◽  
pp. 456-458
Author(s):  
Laurent Hodges
Keyword(s):  
Fuel Economy ◽  
Model Year

The Price of Gasoline and New Vehicle Fuel Economy: Evidence from Monthly Sales Data

2010 ◽  
Vol 2 (3) ◽  
pp. 134-153 ◽  
Author(s):  
Thomas Klier ◽  
Joshua Linn
Keyword(s):  
Market Share ◽  
Fuel Economy ◽  
The Other ◽  
Vehicle Model ◽  
Gasoline Price ◽  
Detailed Model ◽  
Gasoline Tax ◽  
Model Year ◽  
Identification Strategy ◽  
Unique Dataset

This paper uses a unique dataset of monthly new vehicle sales by detailed model from 1978 to 2007, and implements a new identification strategy to estimate the effect of the price of gasoline on individual vehicle model sales. We control for unobserved vehicle and consumer characteristics by using within model year changes in the price of gasoline and sales. We find a significant sales response, suggesting that the gasoline price increase from 2002 to 2007 explains nearly half of the decline in market share of US manufacturers. On the other hand, an increase in the gasoline tax would only modestly raise average fuel economy. (JEL H25, L11, L62, L71)

Microstructure of an extruded rapidly solidified Al-8Fe-2Mo alloy

1986 ◽  
Vol 44 ◽  
pp. 548-549
Author(s):  
W. T. Donlon ◽  
J. E. Allison ◽  
S. Shinozaki
Keyword(s):  
Electron Microscopy ◽  
Automotive Industry ◽  
Fuel Economy ◽  
High Strength ◽  
Al Alloys ◽  
Light Weight ◽  
Thin Sections ◽  
Strength And Durability ◽  
Rapidly Solidified ◽  
Whitney Aircraft

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.

The Relation of Locomotive Maintenance to Fuel Economy

1918 ◽  
Vol 86 (2218supp) ◽  
pp. 11-11
Author(s):  
Frank McManamy
Keyword(s):  
Fuel Economy
Sign in / Sign up

Export Citation Format

Share Document