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Title: The ethanol heavy-duty truck fleet demonstration project

Abstract

This project was designed to test and demonstrate the use of a high- percentage ethanol-blended fuel in a fleet of heavy-duty, over-the- road trucks, paying particular attention to emissions, performance, and repair and maintenance costs. This project also represents the first public demonstration of the use of ethanol fuels as a viable alternative to conventional diesel fuel in heavy-duty engines.

Publication Date:
Research Org.:
National Renewable Energy Lab., Golden, CO (United States); Illinois Dept. of Commerce and Community Affairs, Springfield, IL (United States)
Sponsoring Org.:
USDOE Assistant Secretary for Energy Efficiency and Renewable Energy, Washington, DC (United States)
OSTI Identifier:
549666
Report Number(s):
NREL/SR-540-22110
ON: DE97006927
DOE Contract Number:
AC36-83CH10093
Resource Type:
Technical Report
Resource Relation:
Other Information: PBD: Jun 1997
Country of Publication:
United States
Language:
English
Subject:
33 ADVANCED PROPULSION SYSTEMS; 09 BIOMASS FUELS; TRUCKS; FUEL SUBSTITUTION; ETHANOL FUELS; DEMONSTRATION PROGRAMS

Citation Formats

NONE. The ethanol heavy-duty truck fleet demonstration project. United States: N. p., 1997. Web. doi:10.2172/549666.
NONE. The ethanol heavy-duty truck fleet demonstration project. United States. doi:10.2172/549666.
NONE. 1997. "The ethanol heavy-duty truck fleet demonstration project". United States. doi:10.2172/549666. https://www.osti.gov/servlets/purl/549666.
@article{osti_549666,
title = {The ethanol heavy-duty truck fleet demonstration project},
author = {NONE},
abstractNote = {This project was designed to test and demonstrate the use of a high- percentage ethanol-blended fuel in a fleet of heavy-duty, over-the- road trucks, paying particular attention to emissions, performance, and repair and maintenance costs. This project also represents the first public demonstration of the use of ethanol fuels as a viable alternative to conventional diesel fuel in heavy-duty engines.},
doi = {10.2172/549666},
journal = {},
number = ,
volume = ,
place = {United States},
year = 1997,
month = 6
}

Technical Report:

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  • Four quieted over-the-road tractors were designed and produced. These were evaluated in fleet service. Significant reductions in diesel truck noise were achieved with current state-of-the-art by using a systematic approach on each major noise source. The report describes the fleet test hardware that originally went into service and documents the degradation and normal abuse of the noise control equipment and the resulting changes in the noise levels after the inservice life of the linehaul trucks--approximately 3 years and 400,000 miles. A comparative analysis of fleet maintenance and operating costs for the quiet trucks and like production vehicles is also provided.
  • The purpose of DE-EE0001552 was to develop and deploy a combination of trailer aerodynamic devices and low rolling resistance tires that reduce fuel consumption of a class 8 heavy duty tractor-trailer combination vehicle by 15%. There were 3 phases of the project: Phase 1 – Perform SAE Typed 2 track tests with multiple device combinations. Phase 2 – Conduct a fleet evaluation with selected device combination. Phase 3 – Develop the devices required to manufacture the aerodynamic trailer. All 3 phases have been completed. There is an abundance of available trailer devices on the market, and fleets and owner operatorsmore » have awareness of them and are purchasing them. The products developed in conjunction with this project are at least in their second round of refinement. The fleet test undertaken showed an improvement of 5.5 – 7.8% fuel economy with the devices (This does not include tire contribution).« less
  • The 1977 Amendments to the Clean Air Act mandated EPA to set new emission standards for heavy-duty (HD) vehicles or engines for model years 1983 and 1985. These new standards were to represent a percentage reduction 'from the average of the actually measured emission from heavy-duty gasoline-fueled vehicles or engines...manufactured during the baseline model year.' EPA has initiated a testing program to determine the baseline emission levels. The testing program includes multiple transient tests on each baseline engine, during which emissions are measured by the critical flow venturi constant volume sample CFS-CVS technique. Additional testing on each engine includes themore » current 9-mode certification procedure modified to use the CVS bag procedure.« less
  • This report provides information on the physical characteristics, performance, cost, and operating environment of heavy-duty trucks in the United States. The unprecedented changes in the trucking industry in the 1970s, which affected both the carriers and manufacturers, are also described. These include issues on size, weight, deregulation, low level of investment, and usage characteristics of the fleet.
  • This report describes an experimental investigation of the potential for an enhanced ignition system to lower the cold-start emissions of a light-duty vehicle engine using fuel ethanol (commonly referred to as E85). Plasma jet ignition and conventional inductive ignition were compared for a General Motors 4-cylinder, alcohol-compatible engine. Emission and combustion stability measurements were made over a range of air/fuel ratios and spark timing settings using a steady-state, cold-idle experimental technique in which the engine coolant was maintained at 25 C to simulate cold-running conditions. These tests were aimed at identifying the degree to which calibration strategies such as mixturemore » enleanment and retarded spark timing could lower engine-out hydrocarbon emissions and raise exhaust temperatures, as well as determining how such calibration changes would affect the combustion stability of the engine (as quantified by the coefficient of variation, or COV, of indicated mean effective pressure calculated from successive cylinder pressure measurements). 44 refs., 39 figs.« less