1. PMPN 14 / 15 th MEETINGS Prepared by Caro Hosier
14 & 15 WLTP PMPN Meeting
audio / web conference
Rev 2: updated post 13 Dec 2012 mtg

2. AGENDA VALIDATION 2 ISSUES 06 Dec 2012
Post-test filter weights PM (Phil Price / weighing team
Reference filter (Phil Price / weighing team)
Tunnel Background (Les Hill / dilution systems team)
Evaporation tube temperature (Caro Hosier / PN team)
Regeneration – (Francesco / Thannassis JRC)
PMPN INPUT ON LAB-PROC ICE ISSUES 06 Dec 2012 – to be continued
Effect of regeneration within an 3-phase cycle L-M-H?
Did VP2 evaluate data for 3-phase cycle with separate xH Filter in regard to pm?
What is the effect on Ki-factor in a 3 phase cycle procedure?
Measurement tolerance of PN
Measurement tolerance of PM
ANNEX 6 DRAFTING ISSUES 13/14 Dec 2012
Preconditioning vehicle cycle
‘Equivalent’ PN background
Max PN background threshold
Regeneration
Filter Conditioning before test
Annex 6 section
Annex 6 section
Annex 6 section
Reference filter weighing

3. AGENDA continued ANNEX 5 DRAFTING ISSUES 13/14 Dec 2012
Preconditioning vehicle cycle
‘Equivalent’ PN background
Max PN background threshold
Calibration Guideline update timing
Next meetings

4. 1-0. Open Issues –VP2 Issues Discussion points Status 1 2 3 4 5
Post-test filter weights PM
VP2 data - Phil Price / weighing team
Teflo filters not examined. CARB use teflo and have 30 minute standard.
VP 2 data supports 1 hour conditioning time post-test for filters on TX-40.
PMPN Chair to communicate data / draft proposal to Japan for comment. 2
Reference filter
CARB data if available
1-15 days proposed for rolling average as a result of VP2 data. 3
Tunnel Background
PM and PN
VP2 data - Les Hill / dilution systems team
PN background: Further data to be collected and reviewed.
PM background: proposal accepted subject to further confirmation testing re impact of regeneration 4
Evaporation Tube temperature
VP2 data – Caro Hosier / PN team
Data available from only one lab.
No reported issues from instrument manufacturers.
Proposal for 350+/- 10 deg C adopted 5
Regeneration investigations
VP-2 Christos / Thannassis JRC
PMPN recommends that PMP group is requested to include regeneration measurements with the investigations sub 23nm and a final conclusion is drawn from the PMP activities.
CLOSED
CLOSED
CLOSED 4 4 4

5. 2-0. Open Issues –Input Lab-Proc ICE
Discussion points
Status 1
Effect of regeneration within an 3-phase cycle L-M-H?
Data ?
Not part of VP2. PMPN agreed separate study must be discussed. Study could be designed to deliver answers to 1) and 3). 2
Did VP2 evaluate data for 3-phase cycle with separate xH Filter in regard to pm?
VP2 data ?
PMPN recommends single measurement. EU Com DG-ENTR supports (see EU WLTP positions Nov 2012). VP2 data inconclusive – but not recommended from uncertainty perspective to split measurements. 3
What is the effect on Ki-factor in a 3 phase cycle procedure?
Not part of VP2. PMPN agreed separate study must be discussed. Study could be designed to deliver answers to 1) and 3) 4
Measurement tolerance of PN? (relates to 1-3 tests requirements at certification)
VP2 Data –see document 14-05
PMPN requests more information on the tolerance calculations and how this looks when split by emission level 5
Measurement tolerance of PM? (relates to 1-3 tests requirements at certification) 5 5 5

6. 13/14 Dec 2012 Topics 3-0. Open Issues – Annex 6 Issues
Discussion points
Status 1
Preconditioning vehicle cycle
Is anything specific required for PM/PN ?
Draft proposal: nothing specific required for PMPN 2
PN background max subtraction ‘equivalent’ to 2E+9 #/km
Is the word ‘equivalent’ necessary ?
YES measured in concentration and corrected to #/km via calculations involving flowrate, distance etc 3
Is this the correct value ? Background PN data required. 2E+9 #/km is 0.3% approx of todays EU diesel PN limit value. 4
Regeneration
Is there a need to specify a minimum recommended distance post regeneration to rebuild soot cake ? 5
Filter conditioning before test
Drafting options to be discussed
CLOSED
13/14 Dec 2012 Topics 6 6 6

7. 13/14 Dec 2012 Topics 3-0. Open Issues – Annex 6 Issues
Discussion points
Status 6
Annex 6 section PM sampling
PMPN final sign-off required 7
Annex 6 section PN sampling 8
Annex 6 section PM sampling 9
Reference filter weighting
Japan questions need for rolling average. PMPN data requested to provide to Japan.
13/14 Dec 2012 Topics 7 7 7

8. 13/14 Dec 2012 Topics 4-0. Open Issues – Annex 5 Issues
Discussion points
Status 1
Page 41 - Figure 15 redundant
Page 41 - Figure 15: A recommended particle sampling system -  is redundant. Figure 7 page 37 with same under title is sufficient. 2
Page 41 paragraph :
 The Determination of the transformation time of the particle number sampling system is not reasonable for PC testing because of the use of a full flow CVS-system. 3
P 49 : :
The counting efficiency of the PNC should be monitored for deterioration with a limit of +/- 5% against reference PNC etc.. This limit is not scientifically sound because the demanded counting accuracy of a PNC is +/- 10% see paragraph Either  the counting accuracy of the PNC  in general is changed to +/- 5% or the PNC monitoring value has to be changed to +/- 10%
13/14 Dec 2012 Topics 8 8 8

9. 5-0. Calibration guidelines
EMRP activities (Hans-Georg Horn)
ISO activities (Hans-Georg Horn)
JRC VPR RR final report
Final report due Dec 2012
Calibration Guideline Document
CSH to check copyright with Calibration Guidelines with AEA Technology (Ian Marshall)
Related issues
Impact of measuring during regeneration on stringency of calibration protocols
Impact of PMP considerations regarding lowering 50% cut off below 23 nm
Calibration Guideline update timing
To be developed in conjunction with other issues
All Calibration issues held over for discussion at PMPN session in Jan 2013

10. 6-0. Next Meetings December 2012 Web / Audio conferences
13 Dec pm CET to focus on issues related to DTP
14 Dec pm CET to focus drafting issues and remaining DTP related items
2013 PMPN Major Activities
Date TBE : Calibration / Calibration guideline issues (see agenda item 5)
Date TBE : Planning regeneration and Ki mode construction study
Date TBE : Follow up with UN-ECE PMP group re progress on <23nm 50% cut off
Date TBE : Full review of Annex 5 and 6 GTR draft

11. ADDITIONAL INFORMATION ON ISSUES

12. 1-3. Tunnel background - PN
No PN background data available from VP2. Accordingly data being sought from manufacturers and other test laboratories as well as the PMP IL study
RICARDO DATA
12m3/min CVS
Matter PMP system (with PCRF)
LDDs with DPFs
Data from 20 to 30s logging prior to key-on of cold NEDC
See background PN data above from some tests conducted over a 3 weeks period at Ricardo (not ILCE_LD data). No long-term impact of regeneration on background numbers seen (only one regen test though, probably partial regen).

13. 1-3. Tunnel background - PN
Source: OICA LD RR : funded by ACEA, executed by UTAC. Presented to GRPE Jun 2009
PN #/km
Standard deviation
Expanded uncertainty
Mean
Repet
Repro
URepet
URepro
407
9.71e8
5.5e8 (57%)
7.1e8 (73%)
1.1e9 (113%)
1.4e9 (144%)
Avensis w/o reg effect
3.60e10
1.4e10 (39%)
2.9e10 (81%)
Background
5.14e8
3.1e8 (60%)
4.9e8 (95%)
6.2e8 (121%)
9.9e8 (193%)
=>The relative uncertainties are comparable to those of the PM.
=>The absolute uncertainties are in the order of the level of emissions.
=> Variability remains high ~150% compared to ~5% for CO2 or ~10% for NOx.

14. 2.1 – 2.4. Sampling Method <conditions for Mode construction>
Issues from lab proc ICE
critical
disadvantage
advantage
Pollutants sampling
One bag / filter
Each phase sampling
Regional / Vehicle
Representative
No flexibility for different mode construction (regional needs and/or vehicle characteristic *)
Possess flexibility for different mode construction (regional needs and/or vehicle characteristic *)
limit / incentive / customer info.
Impossible to set each phase limit / incentive and to provide precise info. for customer.
Be able to set each phase limit / incentive and to provide precise info. for customer
Flexible for future needs.
Testing accuracy
Secure PM measurement accuracy
Impossible to compensate in each phase (Ki / RCB)
Concern on PM measurement accuracy
 allow one sample for L~H phase and one for eH
or as it is
Be able to compensate in each phase (Ki / RCB)
Testing efficiency
Testing burden to conduct multiple mode on same vehicle if necessary.
Testing burden for Ki/RCB measurement
 Ki : allow to apply H phase Ki for eH.
 RCB : no compensation when RCB is less than [abc] %
 Range : SAE shorten method × ○
*) Ex-H phase shall be exempted when vehicle maximum speed is less than [xyz] km/h or CP needs

15. 2.1. Ki Determination ・ Enormal･LOW(g/km) DLoad (km)
Ex-H phase Ki : allow to use H phase Ki
As an option, allow to conduct Ex-H Ki determination
Test without regeneration
each of L ~ H -
Loading cycle
Test with regeneration
Start of regeneration
LOW
589s
MIDDLE
433s
HIGH
455s
LOW
589s
MIDDLE
433s
HIGH
455s
LOW
589s
MIDDLE
433s
HIGH
455s 1 2 ・ n
Sample#1
Sample#2
Sample#3
LOW
589s
MIDDLE
433s
HIGH
455s
PM shall be analyzed with one filter
Under regeneration ・
Enormal･LOW(g/km)
DLoad (km)
(including test distance)
End of regeneration
LOW
589s
MIDDLE
433s
HIGH
455s
ExHのKiはフェーズHのKiを使ってもよい。もちろん、ExHのKiを計測することも認められる。
L～HのKiを求める方法は次のとおり。
まず、再生に入らない状態のエミッションを計測する。これは通常と同じ方法。
その後、再生が発生する直前まで走行し、各フェーズの走行距離を得ておく。
再生に入る最初のサイクルから再生が終了するサイクルまでの間、フェーズ毎にエミッションを足し合わせる。
その結果を受けて、例えば、フェーズLのKiについては、この表の式のように計算できる。フェーズMとHについても同様。
Sample#1
Sample#2
Sample#3
<Example of additive Ki factor for Low phase>
Eregen･LOW(g/km) =
∑ Mregen･LOW (k) / DLOW *n
Dregen (km)
Ki =
( Enormal･LOW * DLoad + Eregen･LOW * Dregen ) n
- Enormal･LOW*(DLoad+ Dregen)
k=1 15

16. issue-1 issue-2 3-1. Summary of Applicable Test Cycles New Proposal
If assume precon is same as base cycle- anything special required for PMPN preconditioning ?
Letter Number
Phase Class
New Proposal
L3 + M3 +
H3 (+ ??)
L3 + M3- + H3-
L3 + M3 + H3 (+ eH3)
issue-1
issue-2 34
Power* to Mass** Ratio (kW/t)
L2 + M2 + L2
L2 + M2 + H2
L2 + M2 + H2 (+ eH2) 22
L1 + L1 + L1
L1 + M1 + L1 ～ ～ 70 90
120
135
Maximum Vehicle Speed *** (km/h)
*) 30 minutes maximum power for Battery
**) Curb Mass
***) 30 minutes maximum speed for BEV

17. 3-5. Filter conditioning before test
At least one hour before the test, the filter shall be placed in a petri dish protecting against dust contamination and allowing air exchange, and placed in a weighing chamber for stabilization. At the end of the stabilization period, the filter shall be weighed and the tare weight shall be recorded. The filter shall then be stored in a closed petri dish or sealed filter holder until needed for testing. The filter shall be used within eight hours of its removal from the weighing chamber .    
 PM weighing group leader to provide text on zero/span weighings.
web/telconf.: Info to come.
PM/PN has defined the term “Particulate Matter Weighing Chamber” in DTP-PMPN as “A chamber used for the determination of the mass of filters, and meeting the requirements of annex 3 section 2.” This reference will be checked.
from C. Hosier: The OIL has two options : Pre-test: > 1h conditioning before weighing. < 1h between removal from weighing room & emissions test (<8h if filter holder is sealed). It is not sure whether the elimination of the 1 hour option was deliberate or unintentional. C. Hosier will check with the weighing team small group.
Wait for validation 2.
PM weighing team leader confirmed option was sealed filter holder only with maximum 8 hours time limit, selected for good engineering practice and to align with GTR-04. PMPN chairman to communicate this back to drafting co-ordinator.

18. 3-9. Reference filters
The comparison of reference filter weighings shall be made between the specific weights and the rolling average of that reference filter's specific weights. The rolling average shall be calculated from the specific weights collected in the period since the reference filters were placed in the weighing room. The averaging period shall be at least 1 day but not exceed 30 days.     
J concern: rolling average may lose some contamination.
J position: should be compared with actual number, but anyone knows feasibility???
DC: reply to J that this is Euro 5 practice and is feasible.
 CSH remark : PMPN recommended rolling average after long and careful discussions – individual measurements rejected by PMPN – this was due to be checked in validation 2 –
VP2 data revealed that a too long rolling average period does not allow the rolling average to track changes sufficiently fast. PMPN therefore recommends to shorten the maximum allowed rolling average period down from 30 days to 15 days.
Concurrence of Japan is requested

20. SUPPLEMENTARY INFORMATION

21. 4-2. Proposed Mode Construction
[ Baseline test - Cold start -]
LOW
589s
MIDDLE
433s
HIGH
455s
Ex-HIGH
323s
exempt for vehicles whose maximum speed is equal or less than [xyz] km/h or
CP option
soak
Sample#1
RCB#1
Sample#2
RCB#2
Sample#3
RCB#3
Sample#4
RCB#4
[ Baseline test
- Hot start -]
PM shall be analyzed with one filter
LOW
589s
MIDDLE
433s
warm up
Necessity of hot start test will be decides based on validation 2 results
Sample#1
RCB#1
Sample#2
RCB#2
Each CP shall provide COLD/HOT weighting factor
cold/hot
weighting
phase
data
phase
data
phase
data
phase
data
standalone
Can be combined, as an option

22. 4-3. Proposed Mode Construction
[ Range tests ]
Charge Batteries
LOW
589s
Charge Batteries
Charge Batteries
MIDDLE
433s
Charge Batteries
Can be combined,
as an option
Charge Batteries
HIGH
455s
Charge Batteries
Charge Batteries
Ex-HIGH
323s
Charge Batteries
standalone
exempt for vehicles whose maximum speed is equal or less than [xyz] km/h or
CP option
Cumulative Whr
Sample#n *
RCB#n
Cumulative Whr
As an option, allow to apply SAE method to get each phase Range for BEV
Charge Batteries
LOW
589s
MIDDLE
433s
HIGH
455s
Ex-HIGH
323s
Steady
Speed
Charge Batteries
Cumulative Whr
Sample#1
RCB#1n
Sample#2
RCB#2n
Sample#3
RCB#3n
Sample#4
RCB#4n
Cumulative Whr