割草机排放测试PEMS试点及未来监测计划

Lawnmower Emissions –PEMS Pilot Testing and Upcoming Surveillance ProgramDavid Chou, Kaishan Zhang (AQPSD)John Karim, Stephanie Maalouf(MSLD)OSAR Annual ConferenceMarch 13-14. 20241OutlineBackground and ObjectivesEquipmentPreparation and Data CollectionResultsConclusionsNext Steps2Background3PEMS are widely applied for on-road vehicles and off-road diesel equipmentCurrent PEMS may not be applicable for small off-road engines (SORE) as it requires a complex set-up Emissions of reactive organic gases (ROG) and oxides of nitrogen (NOx) from SORE becomes increasing importantSORE emissions have a direct health impact to the local communities and the lawn and garden workers ObjectivesEvaluate the technical challenges associated with PEMS measurement of SORECompare real-world emissions vs. emission standardsCompare real-world emissions vs. SORE2020 emission factorUnderstand the operating cycle for lawn mower (idling, stop-and-go)4Equipment2005 new Honda walk-behind lawn mower