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Document Title
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Particle measurement during regeneration of GPF and DPF
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Reference Number
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PMP-30-07
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Date
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Summary
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Discussion presentation on issues potentially impacting the measurement of PN during regeneration of gasoline particulate filters and diesel particulate filters on light-duty vehicles.
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Source(s)
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Ricardo
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Rulemaking Area(s)
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PMP
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Meeting(s)
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Downloads
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UNECE server
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.pdf format
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Excerpts from session reports related to this document
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PMP | Session 30 | 3-4
Apr 2014
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JRC contracted Ricardo-AEA. Presentation provided by B. Giechaskiel. - Heavy Duty include regeneration PN measurements – continuous and periodic, however, PN measurements during regeneration are currently excluded from light duty emissions requirements.
- Regen measurements with 10nm and 23nm CPCs show no indication of artefact. The artefact shows up in the 6nm measurements.
- Considering the PN-PEMs project for RDE in Europe, useful to consider how regeneration in real driving situation compares to regeneration in a laboratory.
- Clear need identified to ensure pre-conditioning occurs prior to testing post-regeneration.
- Identified need to consider regen from multi-device aftertreatment systems (eg either LNT or SCR and DPF.
- Essential to use Euro 6 vehicles .
- JRC test plan (under revision) for diesel regeneration aims to start Sept 2014 in parallel with PN-PEMS. JRC will use the WLTC as the cycle for study basis.
- Further discussions on issues with measuring regeneration on GPF (passive rather than active regen) – agreed to review in 1 month by web conference and tentatively to cancel the GRPE PMP session.
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