1. Positions on open points WLTP DTP subgroup LabProcICE
WLTP-DTP-LabProcICE-262
Positions on open points WLTP DTP subgroup LabProcICE
Incl. initial proposals from LabProcICE leading team,
Based on input by the following stakeholders:
Drafting Coordinator
Japan (LabProcICE-250)
EU-COM (LabProcICE-254rev1, -rev2 will be included soon)
General remarks:
This presentation includes the comments which were decided by LabProcICE leading team to be confirmed or discussed at the f2f meeting. All other issues/comments which are purely editorial or already approved by LabProcICE leading team will be reviewed and transposed by the Drafting Coordinator.
The input from other stakeholders has been transposed to the LabProcICE master amendment draft (LabProcICE-263)
Remark on EC comments:
The comments by Iddo Riemersma (IR) were taken from the document LabProcICE-rev1. Please note: Unfortunately the numbering of the comments is not consistent with Revision 2.
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2. II. Text of Global Technical Regulation
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3. [ ] __________________________________________ 3. Definitions
LabProcICE:
agreed [ ]
LabProcICE:
remove square brackets,
IR19: DC issue
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4. 4. Abbreviations 4.1 General abbr. / 4.2. Chemical symbols & abbr.
LabProcICE:
To be confirmed by experts PCF: PM/PN
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5. 5. General requirements LabProcICE: To be confirmed by experts
Review Phase 1b
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6. 5.6. CO2 vehicle family
 EV / DTP
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7. Question Technical Secretary: No tolerance for engine displacement?
LabProcICE:
IR 28: To be discussed in phase 1b
TS question: Same engine means no range for displacement et.al.
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8. [ ] 6. Performance requirements LabProcICE: Remove square brackets.
Editorial: fuels are „described“
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9. ANNEX 1 – Worldwide Light Duty Test Cycles
All downscaling issues
to be reviewed by DHC
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10. ANNEX 4 – Road load and dyno setting
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11. 3.1. Required overall measurement accuracy
3. Measurement criteria
3.1. Required overall measurement accuracy
(b) time accuracy: min. +/-1ms; time resolution: min. +/-0.01 s;
JAPAN proposal:
time accuracy of min. +/-10ms is enough for RLD
LabProcICE: seems valid, to be confirmed by RLD experts
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12. [3.2. Wind tunnel criteria
The wind tunnel used for the determination of the product of aerodynamic drag coefficient Cd and frontal area Af within the road load vehicle family shall meet the criteria in this section.
…   ]
JAPAN & TS comments:
No sufficient technical discussion has taken place
Allow to use current equipment at this stage (Japan provides specifications)
Review of specifications in Phase 1b
LabProcICE: discussion needed
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13. 3.2.8. Air pressure 3.2. Wind tunnel criteria
LabProcICE: confirmation by experts needed
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14. [ ] [ ] 4.1.1.1.1. Wind conditions using stationary anemometry
4.1. Requirements for road test
Atmospheric conditions for road test
Wind conditions
Wind conditions using stationary anemometry [ ] [ ]
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15. [ ] [ ] [ ] 4.1.1.1.2. Wind conditions using on-board anemometry
Remarks:
Values were provided by RDW (NL) directly to DC on August 14th.
US manufacturers proposed an average of 10 m/sec with gusts to 14 m/s.
JAMA/JASIC accept and as in UN ECE GTR 2013/13.
LabProcICE:
Discussion needed
LabProcICE-261 by AUDI
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16. … 4.2.1. Test vehicle 4.2. Preparation Technical Secretary proposal:
Replace „leads to highest/lowest road load“
by „ … cycle energy demand“
in whole paragraph
LabProcICE:
Agreed
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17. 4.2.1.3.1. Vehicle test mass … [ 4.2. Preparation 4.2.1. Test vehicle
JAPAN comment:
DTP decision, see OIT:
15% is for Category-1 vehicles, 28% is for Category-2 vehicles. [
LabProcICE:
Agreed, bring gtr in line with DTP decision
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18. Needs to be reviewed. Phase 1b?
LabProcICE:
Needs to be reviewed. Phase 1b?
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19. … 4.3.1.4.5.1 LabProcICE: agreed (see DTP decision OIT)
4.3. Measurement and calculation of total resistance by coastdown method
Vehicle coast down procedure
The total resistance curves … …
IR 72: This is the same calculation procedure as in , only in a different order.
There is no need to have two calculation methods for the same outcome in a GTR.
Apart from that, there is also a risk involved. If one or the other method is amended
without harmonising the other, a loophole might occur.
During discussions in WLTP it was agreed to leave out this double calculation method.
LabProcICE:
agreed (see DTP decision OIT)
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20. [ ] 4.3.2. On-board anemometer-based coastdown method
Technical Secretary:
Delete square brackets
LabProcICE: agreed, remove brackets.
Complete chapter should be reviewed
 Phase 1B
Selection of speed range for road load determination
LabProcICE: to be discussed, clear definition of reference speed and speed range required
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21. 4.3.2.4. Vehicle coastdown procedure
LabProcICE:
To be checked by RLD experts
(+ editorial suggestions)
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22. To be provided by RLD experts. Clarification in Phase 1B
LabProcICE:
To be provided by RLD experts.
Clarification in Phase 1B
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23. LabProcICE: to be confirmed by RLD experts. Clarification in Phase 1B.
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24. 4.4.2.2. Start of data collection
4.4. Measurement of running resistance using the torque meter method
Procedure and data sampling
Start of data collection
LabProcICE:
To be checked by RLD experts
Clarification in Phase 1B
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25. 4.4.3.1. Calculation process . . . LabProcICE:
Calculation of mean velocity and mean torque
Calculation process
. . .
LabProcICE:
To be clarified at f2f meeting
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26. 4.5.5. Road load curve correction
LabProcICE:
To be clarified with RLD experts
No clarification  Phase 1B
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27. 4.5.5. Road load curve correction
LabProcICE:
To be clarified with RLD experts
No clarification  Phase 1B
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28. 5. Method for the calculation of default road load based on
5. Method for the calculation of default road load based on vehicle parameters
5.1.
Proposal: Reference speeds shall be selected
according to § and the default
road load (Fc), in N, for these reference
speeds vj, in km/h, shall be calculated
LabProcICE:
Agreed
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29. 5. 2. The default road load force shall be calculated using the
5.2 The default road load force shall be calculated using the following equation:
LabProcICE:
IR105: to be discussed with RLD experts
Approach was agreed at DTP-14 and continuously reviewed based on input by stakeholders.
Industry objects to current parameters. Based of future data the parameters can be reviewed and adapted (Phase 1b)
DC comment: Has the paragraph been reviewed by all interested parties?
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30. [
6. [Reserved: Road load measurement using a combination of a wind tunnel and chassis dynamometer] ]
LabProcICE:
Requirements to be developed in WLTP Phase 1B
IR107: clarified later
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31. 7. Transferring road load to a chassis dynamometer
7.1. Preparation for chassis dynamometer test
Laboratory condition
Roller
The chassis dynamometer roller(s) shall be clean, dry and free from foreign material which might cause tyre slippage. For chassis dynamometers with multiple rollers, the dynamometer shall be run in the same coupled or uncoupled state as the subsequent Type 1 test. Chassis dynamometer speed shall be measured from the roller coupled to the power-absorption unit.
Technical Secretary proposal:
This section shall not be applied to vehicles of Annex 8
LabProcICE:
DHC/EV issue, but clarification welcomed
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32. 7.3.4. Vehicle warm-up JAPAN:
No support of “alternative procedure” at this stage since no family criteria
nor setting criteria are defined. -> Delete paragraph.
LabProcICE:
Exclude now. Reserve paragraph for amending in Phase1B
 Phase1B
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33. 8. Chassis dynamometer load setting
8.1. Chassis dynamometer setting by coastdown method
Verification
DC question: Has this section been reviewed? Especially Fixed run method and Iterative method
LabProcICE:
Feedback from experts?
Review in phase1B?
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34. 8.2. Chassis dynamometer load setting using torque meter method
Verification
. . . [
LabProcICE:
Remove brackets
- review in Phase 1B needed (see next slide) ]
See next slide
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35. LabProcICE: See also ANNEX 5 (2. Chassis dynamometer)
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and 10 N criterion in Verification of road load simulation without a vehicle
LabProcICE:
Torque meter criterion not consistent with 10N.
 Alignment in phase1B
DC requests check of 10 N consistency too.

36. App. 1 - Calculation of road load for the dynamometer test
1.1. The measured road load shall be calculated using the following equation:
LabProcICE:
Proposal: 3 % for a two axle driven vehicle,
1.5 % for a one axle driven vehicle
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37. LabProcICE: Needs to be scrutinized by
RLD experts (torque meter method)  Phase 1B
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38. ANNEX 5 – Test equipment and calibrations
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39. LabProcICE: Separate expert feedback requested.
Clarification of frequency (yearly?)  Phase 1B
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40. 3.3.2. Dilution air conditioning[ ]
DC comment:
Square brackets to be clarified!
UTAC:
Delete 99.97%
LabProcICE:
- IR152: agreed, alignment necessary.
Discussion with meas. experts required
- agreed: delete 99.97%
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41. LabProcICE:
Separate expert feedback needed.
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42. LabProcICE:
Separate expert feedback needed.
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43. LabProcICE:
Separate expert feedback needed.
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44. LabProcICE:
Separate expert feedback needed.
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45. LabProcICE proposal:
“Deviations between calculated mass and measured quantity shall not exceed 2 %. Otherwise...”
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46. LabProcICE: OK
LabProcICE: OK
LabProcICE:
OK (t90)
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47. LabProcICE:
Keep “can”
LabProcICE:
Amendment in
Phase 1b
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48. To be reviewed in Phase 1b
LabProcICE:
To be reviewed in Phase 1b
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49. Expert feedback needed
LabProcICE:
Expert feedback needed
LabProcICE: OK
LabProcICE:
Expert feedback needed
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50. ANNEX 6 – Type 1 test procedure and test conditions
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51. 1.2. Type 1 test conditions 1.2.3. Test vehicle 1.2.3.3. Run-in
Overview
LabProcICE:
Proposal needed phase 1b
Test vehicle
Run-in
LabProcICE:
DTP agreed on „ km“
 DC: Amend gtr draft
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52. 1.2.4.2. Dynamometer operation mode
Type 1 test conditions
Settings
Dynamometer operation mode DC
LabProcICE:
Gtr inline with intensively discussed and agreed wording.
 Leave it like it is.
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53. Possible improvements  Phase1B
Settings
LabProcICE:
Possible improvements
 Phase1B
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54. 1.2.6.2. Battery charging 1.2.6. Test vehicle preconditioning
JAPAN:
Add: „ … except that the manufacturer requests no charging before preconditioning.“
LabProcICE:
Agreed.
Inline with DTP decision (see OIT): “at the request of the manufacturer charging can be omitted before precon”
To be reported in the test report.
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55. 1.2.6.3.7 1.2.6. Test vehicle preconditioning LabProcICE: Agreed.
In line with DTP decision: "At request of the manufacturer or [technical service/authority] additional wltc cycles can be performed in order to bring the vehicle and its control systems in a stabilised condition."
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56. [ ] [ ] 1.2.6.6. Speed trace tolerances
Test vehicle preconditioning
Speed trace tolerances [ ] [ ]
Japan / Technical Secretary:
Within 1.0 sec on any violation and less than 3 times for Class1 and 5 time for Class2/3
LabProcICE:
TS to provide a draft text
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57. Predominant mode  Proposals by NL (LabProcICE-258)
Test vehicle preconditioning
Use of the transmission
Predominant mode  Proposals by NL (LabProcICE-258)
Additional comments to paragraphs to
by Iddo Riemersma (on behalf EC):
see LabProcICE-254rev2, comments „IR 301“ to „IR 306“
and general remark „IR 280“
LabProcICE:
To be discussed during f2f meeting
Note:
Editoral by Japan (#12 in LabProcICE-251)
agreed
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58. 1.2.6.8. Decelerations 1.2.6.8.1  Phase 1B
Test vehicle preconditioning
Decelerations
LabProcICE:
Provision for “sailing” is missing
ACEA proposal with justification is required.
 Phase 1B
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59. 1.2.7. Soaking LabProcICE: IR312: agreed.
IR313: to be clarified. (supplemental test, phase 1b)
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60. 1.2.14.2. Bag analysis 1.2.14.2.1 LabProcICE:
Japan proposal:
“… in any event not later than 30 minutes for exhaust gases analysis after
the end of the cycle phase.”
Justif.: 30minutes is tough limitation, because in case of future NO
continuous measurement requirement. Japan recommend 30 minutes limit
effect only for exhaust gases, and <dilution air contained in the bags>
exclude from time limit.
LabProcICE:
Discussion with meas. experts required
Presentation by AUDI: LabProcICE-257rev1
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61. ANNEX 5 LabProcICE: correct LabProcICE: change to 30 min
Additional comments with regard to bag analysis / analyzing time:
LabProcICE:
correct
ANNEX 5
LabProcICE:
change to 30 min
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62. 1.2.14.2 Bag analysis LabProcICE: correct, 5.3.1.1. will be changed
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63. Review by PMPN? ANNEX 6 – Appendix 1 Emissions test procedure
for all vehicles equipped
with
periodically regenerating systems
Review by PMPN?
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64. ELECTRIC POWER SUPPLY SYSTEM
ANNEX 6 – Appendix 2
TEST PROCEDURE
FOR
ELECTRIC POWER SUPPLY SYSTEM
MONITORING
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65. [ ] Japan: LabProcICE: Remove square brackets of Appendix LabProcICE:
Apply all rechargeable batteries including electrified vehicles
Apply standard method (Annex 8 / Appendix II) only to the batteries having propulsion functions
Apply Willans method only to the batteries not having propulsion function  if no agreement  Phase 1B
Apply no adjustment threshold (whole WLTC : 0.5%) for both methods (2: to reduce testing burden, 3: due to measurement accuracy )
LabProcICE:
To be discussed
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66.  Proposal by Japan: LabProcICE:
. . . not having propulsion function.
LabProcICE:
Expert discussion needed. For example: is it always possible to clearly distinguish between propulsion and non-propulsion batteries?
If no common agreement: follow Japanese proposal for Phase 1A.
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67. Other comments by EC: 2. Measurement equipment and instrumentation
2.1. Current transducer
LabProcICE:
Confirmation by experts requested.

68. Feedback from experts requested.
2.2. Vehicle on-board data
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LabProcICE:
Feedback from experts requested.

69. [ ] 2.2. Vehicle on-board data LabProcICE:
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LabProcICE:
Feedback from experts requested.
Delete square brackets. [ ]

70. 3. Measurement procedure 3.1. External battery charging
LabProcICE:
Add : „ … , except that the manufacturer requests no charging before preconditioning.“ or leave complete sentence out?
LabProcICE:
To be clarified by experts

71. Expert feedback requested.
3.6. The test results shall be the uncorrected measured values of CO2,cs
and FCcsin case any of the following applies:
LabProcICE:
Expert feedback requested.

72. Expert feedback requested.
Correction Method
LabProcICE:
Expert feedback requested.

73. To be confirmed by experts.
LabProcICE:
To be confirmed by experts.
LabProcICE:
Feedback from experts requested