1. Issue: Number of tests OIL#27
WLTP-07-10e
WLTP Open Issue Phase 1B
Issue: Number of tests OIL#27
Starting note Geneva
june, 2014 .

2. Current state – R83 procedure
If the emission result is above 70% of its limit value  second test
If second test is above 85 % of its limit value  third test
Up to three tests are necessary to show compliance with the limits
gtr Annex 6, Figure A6/1

3. Motivation
• With the R83 procedure it is possible to type approve a vehicle with only one measurement. Therefore, measurements close to the emission limits had to be double checked.
• For WLTP type approvals, vehicles will be tested several times:
•Twice as TML- and TMH-vehicle for the interpolation of CO2 values (type I)
•Once for a family in the ATCT
• In the eurpopean WLTP type approval process compliance with the limits has to be shown two to three times, regardless of the measured level in relation to the emission limit.
• Additional measurements required by values close to the emission limits (R83 procedure) provide no higher significance / only statistical information.

4. proposal • ICE vehicles: 1.1.1.2. of annex 6
If the emissions are above 90 % of the respective pollutant emission limit, compliance with the limits shall be demonstrated with a second Type I test for vehicles in one CO2 vehicle family. Each test shall comply with the pollutant emission limits.
Compliance has to be shown with at least two of the following tests
• Type 1 test TML-configuration
• Type 1 test TMH-configuration
• Requirement for PHEV vehicles:
“Each CD and CS test shall comply with the pollutant emission limits.”
For Charge Depleting tests of PHEV: “The paragraph shown in § of annex 6 shall not be applied for the emission evaluation in case of OVCHEV Charge Depleting testing.“

5. Procedure • Rejected Accepted Source: UTAC N o TMH Test 1 R1TMH > L
Yes No
Combined
approach
R1TMH > 0,9 L
Test 2
R2TMH > L
Accepted
TML
RTML > L
Test
N o •
Source: UTAC

6. Justification
• The structure of future regulation delivers a clear picture of the emission compliance of a tested family through various types of emission tests. It is required to meet the standards with Type I Tests at 23 °C with TMH and TML and with ATCT at 14 °C (Europe).
These family based approach of emission compliance verification no longer requires the averaging of emission results Ri as of R83: (Ri1 + Ri2 + Ri3)/3 < L
 WLTP: Each test shall comply with the criteria pollutant emission limits.
• No criteria in Japan: Every test below 100% of the respective limits is valid
• The 90 % criteria follows the requirement of the EPA of an additional test, if the level of 90 % of the respective standard is reached (so called high cert level)
• This approach covers Type I tests of all vehicle with ICE and PHEV

7. Anzahl der Teste – Position VDA
Anzahl der Emissionsteste steigt mit Einführung WLTP um den Faktor 3. (Fahrzeug H, Fahrzeug L, 14° Test)
Fahrzeuge weisen damit mehrfach im Rahmen der Typprüfung die Einhaltung der Grenzwerte nach. Zusätzliche Tests bei CoP und In Service Conformity.
Messtechnik ist heute sehr stabil und genau – hohe Reproduzierbarkeit
VDA Position:
CO2-Familie muss mit zwei Testen bei High Cert Level (> 90 % vom Grenzwert einer limitierten Komponente) Grenzwerte nachweisen.
Gleicher Prozess in einer CO2-Familie nur bei Charge Sustaining Procedure, nicht bei Charge Depleting Testabläufen.
VDA Position

8. BACKUP

9. CAP 2000 guidance • US High cert level:
High emission levels. Any certification level (test level adjusted by the deterioration factor , or test level with aged components installed) is 90 % or more above the applicable standard. If more than one test was performed for any procedure, only the last test is considered for this criterion.