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

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

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

Data To Gather During Validation 2 (1/2) 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

Data To Gather During Validation 2 (2/2) 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

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

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

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