Reducing the Fuel Consumption and Greenhouse Gas Emissions of Medium- and Heavy-Duty Vehicles, Phase Two First Report (2014) / Chapter Skim
Currently Skimming:
Summary
Summary
Pages 1-6
The Chapter Skim interface presents what we've algorithmically identified as the most significant single chunk of text within every page in the chapter.
Select key terms on the right to highlight them within pages of the chapter.
From page 1... ...
The committee has since learned that NHTSA and EPA have commenced work on a second round (Phase II) of CERTIFICATION USING MODELING AND SIMULATION fuel consumption and GHG emission standards for MHDVs.
|
From page 2... ...
GEM employs a limited set of cycles to challenge the Recommendation S.1: NHTSA, in consultation with EPA, simulated truck. These cycles do not include real-world should consider carefully the impact on related metrics when road grade and neglect varying operating weights and aeroattempting to optimize for a single metric, or should other- dynamic yaw angles.
|
From page 3... ...
The manufacturers also report installed prices of side reductions in GHG emissions and fuel consumption, the skirts have declined by half. uncertainties involved with the various alternatives, the A California regulation requires operators of van trailers impact of duty cycles on the ability to comply with the vehi- to use aerodynamic devices to reduce the energy required cle standards, the cost of the technology, and rapid growth to pull them.
|
From page 4... ...
, many of which feature lower rolling using aerodynamic devices on these additional categories of resistance than most dual-tire sets. WBSTs make up less than trailers depends on their annual mileage accumulation and 10 percent of the commercial truck tire market, but their use average speed, among other considerations such as access is increasing as fleets strive to reduce fuel consumption and to the trailer underbody, and needs further assessment and GHG emissions. quantification.
|
From page 5... ...
than the notional tractor-trailer, which can have a combined gross vehicle weight of 80,000 lb.5 While some nonvehicle Regarding the potential for technological change in the alternative approaches for reducing fuel consumption and MY2019-2022 time frame, the committee, in its investigagreenhouse gas emissions may be beyond NHTSA's del tions to date, has not identified any combustion or other egated authority, the agency can work with other agencies engine technologies beyond those identified in the NRC with appropriate authority as well as encourage private (2010) Phase One Report that would provide significant actors to consider such strategies to complement and support further fuel consumption reduction during the Phase II Rule NHTSA's standards.
|
From page 6... ...
Washington, D.C.: The National Academies Press. North American Council for Freight Efficiency (NACFE)
|
Key Terms
This material may be derived from roughly machine-read images, and so is provided only to facilitate research.
More
information on Chapter Skim is available.