Meeting minutes, documents from the meeting are included in the document.

Meeting minutes, documents from the meeting are included in the document.

Computation Fluid Dynamics working group table of issues;

Presentation of outcomes from the Computational Fluid Dynamics method working group.

NO Consistency of Tyre RRC
3g/km Extension from Cal. ? or Test CO₂ value ?
How to develop f₀ and f₂ with fixed f₁ ?
Adjusted f_0,L and/or f_2,L are bigger than f_0,H and/or f_2,H ?
Huge Error when adjusting f_1,L to f_1,H

During discussion in WLTP/DTP, 40 CFR Part 1066 was not finalized yet. Therefore, the values from text in 2011 were used in GTR15. However, the value in CFR were changed to 1.0% from 0.5%. This changes were made to harmonize with other regulations and also because CH-DY manufacturers could not comply with this value.

Propylene and Toluene Response Factors (Annex 5 Para 5.4.3.)
Methane Response Factor (Annex 5 Paragraph 5.4.3.)
Instrument calibration (Annex 5 Paragraph 5.1.)

Discussion of CO₂ measurements and root mean squared speed error (RMSSE) pursuant to round robin methodology validation testing in Europe.

Report on the development of Amendment 4 to GTR 15. Amendment 4 is part of the second phase development of the GTR mandated to:

1. Introduce definitions of response time, delay time and rise time harmonized with those in GTR Nos. 4 and 11
2. Introduce improvements to the gear shifting procedures
3. Ensure consistency in the use of the terms accuracy, precision, resolution, tolerance, repeatability and deviation
4. Address bi-fuel and bi-fuel gas vehicles in accordance with UN R83
5. Clearly define the appropriate positioning of payload mass (25 kg plus the mass of vehicle load)
6. Correct terminology such as “classes of rolling resistance coefficients”
7. Correct minor spelling and/or punctuation mistakes, and restructuring some paragraphs
8. orrect some equations and to make them all consistent with Word’s use of mathematical symbols
9. Exclude all Rechargeable Electric Energy Storage Systems (REESSs) that do not contribute to vehicle propulsion from monitoring
10. Better define the purity of certain gases such as nitrogen and synthetic air
11. Define more specifically the difference in mass of CO2 during charge sustaining between the test with the highest and lowest positive and negative electric energy charge

[Adopted with Canada and US abstaining.]

EVE informal group form prepared to gather views in support of the discussion on whether to pursue electric vehicle power determination procedures towards the establishment of a new global technical regulation or towards drafting an annex for inclusion in GTR 15 on light vehicle emissions test procedures.

Japan comments in relation to the EU submission WP.29-174-09.

Consolidated version of GTR 15 including the draft Amendment 4 as approved by the Working Party on Pollution and Energy. The amended GTR will be considered for adoption during the June 2018 World Forum session.

Annex 8 vehicles: Distinction between vehicles with and without an Internal Combustion Engine, including battery and fuel-cell EVs