experimental investigation of the effects of AFR, spark advance and EGR on nanoparticle emissions in a PFI SI engine
Academic Article
Publication Date:
2013
abstract:
Nanoparticle emissionscontinuetocatchtheattentionbecauseoftheiradversehealth effectsandtheirimpactontheenvironment.Internalcombustionenginesarethemajor
source ofparticleemissionsinurbanareas.Thelegislationproposesastrongerrestriction
for bothdieselandgasolineengines.Inparticular,theEuropeanparticlemeasurement
program(PMP)hasintroducedparticlenumberregulationforbothdieselandgasoline
engines.Greateffortsarethendevotedtothereductionoftheparticleemissions;
nonetheless,themechanismsgoverningparticleformationarestillnotfullyunderstood,
neitherfordieselnorforgasolineengines.
The aimofthepaperistheexperimentalcharacterizationofparticlesemittedfroma
Port FuelInjection(PFI)gasolineengineinsteadystateoperatingconditions.Inparticular,
the impactofenginecontrolvariables(i.e.injectiontimeandsparkadvance)and
emissionscontroltechnologies(i.e.exhaustgasrecirculation--EGR)onparticlesizeand
numberwasdeeplyinvestigated.Moreover,theeffectofthedilutionconditionswasalso
analyzed. Theinvestigationwascarriedoutattheexhaustofa1242ccPFIsparkignition
(SI) engine.Theenginetestbenchwasequippedwithafull-passenginecontrolsystem
dSPACEMicroAutoBox and a scannering mibility particle sizer (SMPS) for particle
counting and sizing.
Iris type:
01.01 Articolo in rivista
Keywords:
Nanoparticle emissions; PFI SI engine; AFR andsparkadvance; Dilution conditions
List of contributors:
DI IORIO, Silvana
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