UN R49 change reports — Emissions of C.I. and P.I. (LPG and CNG) engines
UN Regulation No. 49 (ECE R49) — Uniform provisions concerning the measures to be taken against the emission of gaseous and particulate pollutants from compression-ignition engines and positive ignition engines for use in vehicles.
07 series
- 07 series — Supplement 5
Paragraph 9.3.2.7. of Annex 4 now sets the accuracy of the air to fuel measurement sensor for three ranges of λ.
- 07 series — Supplement 4
Annex 11 and related paragraphs now name the “vehicle user warning system” and the “vehicle user inducement system”. New paragraph 2.68. defines “vehicle user”, in the context of this Regulation, as a driver or ADS user.
- 07 series — Supplement 3, Corrigendum 1
Paragraphs 10.1.8a. and 10.1.10a. no longer list the OBFCM entries given in litres, l or l/h.
- 07 series — Supplement 3
Paragraph 3.5.1. now includes dual-fuel engines of Type 1A with hydrogen as gaseous fuel, and Annexes 8 and 15 add test rules for them.
- 07 series — Supplement 2
New paragraph 3.5. covers applications for type approval of engines fuelled with hydrogen. Hydrogen must be the fuel the engine is designed to run on primarily.
- 07 series — Supplement 1
Annex 2B has a new Addendum to the type approval communication. Items 1. and 5. of Section II now say “see Addendum”.
- 07 series — Base text
Cold start emissions must now be included in the emissions evaluation of the Annex 8 test (para. 4.6.2.).
06 series
- 06 series — Supplement 11
Engines mounted in vehicles of up to 2,840 kg reference mass with an approval to Regulation No. 83 do not need approval to this Regulation. The words “as an extension” are deleted.
- 06 series — Supplement 10
PM number is no longer a pollutant to measure with PEMS (Annex 8, Appendix 1, paragraph A.1.1.).
- 06 series — Supplement 9
New paragraphs 3.5., 4.12.3.3.8. and 5.1.6. set provisions for engines fuelled with hydrogen, including the approval mark letters T, TD, U and UD.
- 06 series — Supplement 7
The SSV equations change: A0 is now 0.005692 and is divided by 60, and A1 is now 27.43831.
- 06 series — Supplement 6
Declared market fuels now need a power correction factor if measured and calculated torque differ by more than a value in paragraph 9.4.2.5.
05 series
- 05 series — Supplement 12
New paragraphs 3.5., 4.6.3.3. and 5.1.10. set provisions for engines fuelled with hydrogen, including approval mark letters T, TD, U and UD.
- 05 series — Supplement 11
Table 7 of Annex 4B has a new linearity row for the humidity measurement device.
- 05 series — Supplement 10
For oxides of nitrogen at the ESC random checkpoints, paragraph 5.2.3.1. adds “or the limit values in Table 1 in paragraph 5.2.1., whichever is greater”.