Chemical characterization of emissions from advanced technology light-duty vehicles

摘要: Abstract Results of detailed emissions measurements seven 2000 model year advanced technology vehicles are reported. Six the were imported from Europe and Japan not yet available for sale in Canada. Three with direct injection diesel (DDI) technology, three gasoline (GDI) one vehicle was a gasoline–electric hybrid. It is expected that these technologies will be forming larger fraction Canadian light-duty fleet coming years response to requirements reduce greenhouse gas transportation sector support Canada's ratification Kyoto Protocol; as result improving fuel quality (most notably reducing sulphur content both gasoline). therefore important understand potential impacts on air such changes composition fleet. The characterized over four test cycles representing different driving conditions. Samples exhaust collected determining methane, non-methane hydrocarbons carbonyl compounds purposes comparing ozone-forming emissions. Although certified standards tested, all met then current Tier 1 emission standards, except which did meet particulate matter (PM) standard. DDI had highest NOX emissions, specific reactivity tested. When compared conventional vehicles, equivalent. GDI lower than vehicles. Both higher PM hybrid lowest reactivity, economy