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WLTP DTP PM-PN Subgroup Activity Report

WLTP DTP PM-PN Subgroup Activity Report. 9 th DTP Meeting / Bern 16 th -18 th April 2012 C. Hosier / C. Vallaude. Overview. Open issues Data to gather during validation 2 GTR drafting Next meeting. Open Issues. OIL => same as GRPE (Jan 2012) OI left need input from VP2

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WLTP DTP PM-PN Subgroup Activity Report

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  1. WLTP DTP PM-PN Subgroup Activity Report 9th DTP Meeting / Bern 16th-18th April 2012 C. Hosier / C. Vallaude

  2. PM/PN Subgroup DTP9 Bern 16-18th of April 2012 Overview • Open issues • Data to gather during validation 2 • GTR drafting • Next meeting

  3. PM/PN Subgroup DTP9 Bern 16-18th of April 2012 Open Issues • OIL => same as GRPE (Jan 2012) • OI left need input from VP2 • PM-PN Parameter list => same as GRPE (Jan 2012) • commented to answer questions from VTF+PL 30th of March meeting

  4. PM/PN Subgroup DTP9 Bern 16-18th of April 2012 Data To Gather During Validation 2 (1/2) • PM filter conditioning • Minimum conditioning time required • Dilution tunnel pre-conditioning and background • Is 20 minutes pre-conditioning at 120kph sufficient? • Tunnel PN background levels • Experience on PN during DPF regeneration • To confirm PN measurement system is capable of excluding worst case volatile material during DPF regenerations • CVS and filter face temperatures during regenerations? => Integrated in parameter list and global test matrix

  5. PM/PN Subgroup DTP9 Bern 16-18th of April 2012 Data To Gather During Validation 2 (2/2) • Ki determination • Mode construction • PM-PN parameter list • PN during regeneration • Vehicles • Will need regen indicator and inhibitor switch • Measure PN before, during and after regeneration • Different PN measurement systems • Two systems per lab sampling in parallel • Impact of VPR pcrf • Test over range from 100-3000 (one system at high, one at low setting each test) • Two tests at each pcrf setting • Impact of CVS dilution on nucleation mode particles • Test at max and min CVS dilution • DPF fill procedure • Either fast loading on engine dyno or on vehicle loading • Follow R83 advice on fill state stabilisation for pre-regen tests • VPR sulphate removal capability • Test with highest sulphur lube oil permitted by OEM and fuel at maximum (10/15mg/kg) sulphur limit • Tested by JRC and ACEA

  6. PM/PN Subgroup DTP9 Bern 16-18th of April 2012 GTR Drafting • PM/PN GTR draft integrated by DC in the global GTR Draft in March 2012 • Drafting audioconf on the 23td of March to validate the text and answer DC questions • => 3 minor new OI opened • Retain or not guidance of filter handling • Add a zero span procedure for the balance? • Precision of when the PN measurement should be started

  7. PM/PN Subgroup DTP9 Bern 16-18th of April 2012 Next Meeting • Next meeting: • Webconf on the 15th of May 2012 • Agenda: • New OI from drafting • Start on calibration procedure • If available have a first look at the validation 2 outputs • Organization of VP2 data analysis

  8. PM/PN Subgroup DTP9 Bern 16-18th of April 2012 Thank you for your attention

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