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原文传递 Brake and Tire Wear Emissions from On-Road Vehicles in MOVES2014

题名：	Brake and Tire Wear Emissions from On-Road Vehicles in MOVES2014
作者：	empty
关键词：	On road vehicles##Brake wear##Tire wear##Exhaust emissions##Fuel combustion##Tailpipe emissions##non-exhaust procesNe##Particulate matter##Tires##
摘要：	The mobile source particulate matter inventory includes exhaust emissions and non-exhaust emissions. Exhaust emissions include particulate matter attributable to engine related processes such as fuel combustion, burnt oil, and other particles that exit the tailpipe. Non-exhaust processes include brake wear, tire wear, suspension or resuspension of road dust, and other sources. Particulate matter from brakes and tires is defined as the airborne portion of the “wear” that can be created by abrasion, corrosion, and turbulence. These wear processes can result in particles being suspended in the atmosphere. The size, chemical composition, and emission rate of particles arising from such sources contributes to atmospheric particle concentrations. However, these particles have different chemical composition and size than exhaust particulate matter. This report was drafted in 2008, based on a literature review conducted in 2006 and 2007. The algorithms and values discussed here were incorporated into MOVES2009 and carried over into MOVES2010 and later versions (MOVES2010a, MOVES2010b, MOVES2014) without change. The report was peer reviewed in 2014 and published as EPA-420-R-14-0132. In 2015, the brake wear emission rates were updated in MOVES2014a to correct an error. This report was updated to account for this by adding footnote h in Section 2.2.5. (Other minor changes were also made at this time to improve clarity.) The percent change in brake wear emissions between MOVES2014 and MOVES2014a varies by regulatory class. With the MOVES2014a update, total brake wear emissions for a typical urban county are approximately ~ 10 to 20% lower than with the previous version. The impact depends on the fleet composition and driving conditions of the county.
总页数：	58
报告类型：	科技报告