Particulate Matter Emissions of Euro 5 and Euro 6 Vehicles Using Systems with Evaporation Tube or Catalytic Stripper and 23 nm or 10 nm Counters Joint Research Centre (JRC)

Format:

Book

Conference/Event

Author/Creator:

Giechaskiel, Barouch, author.

Contributor:

Bielaczyc, Piotr

Szczotka, Andrzej

Woodburn, Joseph

Conference Name:

SAE Powertrains, Fuels & Lubricants Meeting (2020-09-22 : Krakow, Poland)

Language:

English

Physical Description:

1 online resource cm

Place of Publication:

Warrendale, PA SAE International 2020

Summary:

Particle number (PN) emissions of vehicles were introduced inthe European Union's regulations for light-duty and heavy dutyvehicles in the years 2011-2014. Since then, PN measurements havebecome a common practice in the automotive sector. Many studiesshowed that the current methodology, which counts particles >23nm, misses a large fraction of particles for some enginetechnologies, such as port fuel injection vehicles or vehiclesfueled with compressed natural gas (CNG). However, data for thelatest technology vehicles are lacking. For this reason, wemeasured PN emissions >23 and >10 nm of >30 CNG, gasolineand diesel-fueled vehicles. Two systems were measuring in parallelfrom the full dilution tunnel; one with an evaporation tube and theother with a catalytic stripper. The PN emission levels spannedover three orders of magnitude depending on whether there was aparticulate filter installed or not. The differences between thetwo systems (>23 nm) were on average within 6%, indicating thata catalytic stripper could justifiably be permitted in future PNregulations. The ratio of 10-23 nm particles to >23 nm particlesranged from negligible up to many times higher. In most cases,sub-23 nm particles were emitted during cold start. During somehigh speed events, solid sub-23 nm particles were measured, butthey were attributed to release of solid particles from thesilicone adaptors. All particulate matter (PM) mass emissions werelower than 4.5 mg/km and <2 mg/km for vehicles equipped withparticulate filters. There was no apparent correlation between PMmass and PN >23 nm or >10 nm

Notes:

Vendor supplied data

Publisher Number:

2020-01-2203

Access Restriction:

Restricted for use by site license