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原文传递 Review and Analysis of Heavy-Duty Truck Activity Data. Final rept.

题名：	Review and Analysis of Heavy-Duty Truck Activity Data. Final rept.
作者：	Younglove-T.
关键词：	Exhaust-emissions; Trucks-; Air-pollution; Heavy-duty-vehicles.;Emission-tests; Nitrogen-oxides; Particulates-; Driver-behavior; Diesel-engine-exhaust-emissions; Fuel-injection-systems; California-; Fuel-economy; Statistical-data; Tables-Data.
摘要：	Emissions calculated with the California Air Resources Board's EMFAC model show that heavy-heavy-duty diesel trucks (HHDDTs) contribute more emissions of the oxides of nitrogen (NOx) and particulate matter (PM) than the number of vehicles might suggest. The primary reason for the high emissions is that HHDDTs have few emission controls and high emission factors. Emissions are heavily dependent on driving behavior as well as to changes in the programming of the on-board computer in modern electronic fuel injected HHDDT vehicles. In-use driving behavior and the proportion of reprogrammed vehicles in the on-road HHDDT fleet are of significant interest to the ARB and there is the need to quantify these factors.
报告类型：	科技报告