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Video

Development of DPF/SCR System for Heavy Duty Diesel Engine

2012-06-15
The development of PM and NOx reduction system with the combination of DOC included DPF and SCR catalyst in addition to the AOC sub-assembly for NH3 slip protection is described. DPF regeneration strategy and manual regeneration functionality are introduced with using ITH, HCI device on the EUI based EGR, VGT 12.3L diesel engine at the CVS full dilution tunnel test bench. With this system, PM and NOx emission regulation for JPNL was satisfied and DPF regeneration process under steady state condition and transient condition (JE05 mode) were successfully fulfilled. Manual regeneration process was also confirmed and HCI control strategy was validated against the heat loss during transient regeneration mode. Presenter Seung-il Moon
Video

Impact of Biodiesel on Particle Emissions and DPF Regeneration Management in a Euro5 Automotive Diesel Engine

2012-06-18
Biofuel usage is increasingly expanding thanks to its significant contribution to a well-to-wheel (WTW) reduction of greenhouse gas (GHG) emissions. In addition, stringent emission standards make mandatory the use of Diesel Particulate Filter (DPF) for the particulate emissions control. The different physical properties and chemical composition of biofuels impact the overall engine behaviour. In particular, the PM emissions and the related DPF regeneration strategy are clearly affected by biofuel usage due mainly to its higher oxygen content and lower low heating value (LHV). More specifically, the PM emissions and the related DPF regeneration strategy are clearly affected by biofuel usage due mainly to its higher oxygen content and lower low heating value, respectively. The particle emissions, in fact, are lower mainly because of the higher oxygen content. Subsequently less frequent regenerations are required.
Video

Teardown-Based Cost Assessment for Use in Setting Greenhouse Gas Emissions Standards

2012-06-18
The U.S. Environmental Protection Agency (EPA) contracted with FEV, Inc. to estimate the per-vehicle cost of employing selected advanced efficiency-improving technologies in light-duty motor vehicles. The development of transparent, reliable cost analyses that are accessible to all interested stakeholders has played a crucial role in establishing feasible and cost effective standards to improve fuel economy and reduce greenhouse gas (GHG) emissions. The FEV team, together with engineering staff from EPA's National Vehicle and Fuel Emissions Laboratory, and FEV's subcontractor, Munro & Associates, developed a robust costing methodology based on tearing down, to the piece part level, relevant systems, sub-systems, and assemblies from vehicles ?with and without? the technologies being evaluated.
Video

Modernizing the Opposed-Piston Engine for Efficient, Clean Transportation

2012-05-10
Historically, the opposed-piston, two-stroke (OP2S) diesel engine set combined records for fuel efficiency and power density that have yet to be met by any other engine type. However, with modern emissions standards, wide-spread development of this engine for on-highway use stopped. At Achates Power, state-of-the-art analytical tools and engineering methods have produced an OP2S engine that, when compared to a leading medium-duty engine, has demonstrated a 21% fuel efficiency gain and engine-out emissions levels meeting U.S. EPA10 with conventional after-treatment. Among the presentation topics covered are thermodynamic efficiency, demonstrated engine results, cost and weight advantages, and overcoming two-stroke engine challenges. Presenter David Johnson, Achates Power Inc.
Standard

Snow Compressor - self propelled

2017-06-27
WIP
ARP6955
This SAE Aerospace Recommended Practice (ARP) document covers the requirements for a Snowcompressor with carrier vehicle used to clear snow from airport operational areas by compressing the volume of collected snow into smaller volumes for loading into a hauling/dump truck or for depositing reduced-volume windrows for snow banking. The term carrier vehicle represents the various self-propelled prime movers that provide the power necessary to move snow and ice control equipment during winter operations. For two-stage rotary plows that primarily are used to cast heavy concentrations of snow away from airport operational areas such as runways and taxiways, see ARP5539.
Standard

Ice Melting Test Method for Runway Deicing Product

2020-05-01
WIP
AS6170
This test method provides stakeholders (runway deicing product manufacturers, users, regulators, and airport authorities) with relative ice melting capacity of runway deicing products, by measuring the amount of ice melted as a function of time. Such runway deicing products are often also used on taxiways and other paved areas.
Standard

Ice Undercutting Test Method for Runway Deicing Product

2020-05-01
WIP
AS6172
This test method provides stakeholders (runway deicing product manufacturers, users, regulators and airport authorities) with relative ice undercutting capacity of runway deicing products, by measuring the area of ice undercut pattern as a function of time. Such runway deicing products are often also used on taxiways and other paved areas.
Standard

Ice Penetration Test Method for Runway Deicing Product

2020-05-01
WIP
AS6211
This test method provides stakeholders (runway deicing product manufacturers, users, regulators, and airport authorities) with a relative ice penetration capacity of runway deicing products, by measuring the ice penetration as a function of time. Such runway deicing products are often also used on taxiways and other paved areas.
Technical Paper

Motor Vehicle Emission Standards - Present and Future

1966-02-01
660104
In California, the State Dept. of Public Health has established motor vehicle emission standards for exhaust hydrocarbons, carbon monoxide and smoke; for fuel tank and carburetor evaporative losses; and for crankcase hydrocarbon emissions. The data on which the standards are based and the need for improved measurement procedures are discussed. At this time, exhaust emission standards for oxides of nitrogen and for odor are being considered as additional standards. Future standards may rate hydrocarbon emissions according to their smog potential. Another possible change that is discussed is to specify the quantity rather than the concentration of pollutants that may be emitted from the exhaust of motor vehicles.
Technical Paper

The American Motors Crankcase-to-Air-Cleaner Engine Ventilation System

1963-01-01
630087
Design and performance evaluation of several potential crankcase ventilation systems and the ultimate choice of the subject tube to air cleaner system are described. The performance considerations include: blowby control, fresh air ventilation, carburetor calibration effects, owner maintenance, backfire protection, and carburetor icing tendencies. Compliance data for the American Motors Crankcase-To-Air Cleaner Engine Ventilation System for the California MVPCB Blow Emission Standard are also demonstrated.
Technical Paper

Present and Future Emission Standards for Heavy-Duty Vehicles

1969-02-01
690765
From the initial motor vehicle emission standards that pertained only to exhaust of hydrocarbons and carbon monoxide, the California laws have gradually expanded control of all types of pollution from automobiles. Whereas pioneer legislation applied to all types of vehicles, significant changes in the laws now set up separate standards for light and heavy duty vehicles and for engines using gasoline and diesel fuels. This paper reviews the history and status of present California and federal emissions standards for heavy duty vehicles and discusses possible future development in this particular vehicle class.
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