Proposal to avoid a redundant correction of the measured engine power of supercharged and turbocharged engines fitted with a self-correcting system for ambient conditions such as temperature and altitude. The current correction factor may yield inaccurate results for such configurations.
| Reference Number: | WP.29/2015/102 |
| Meeting Session(s): | 167th WP.29 session (10-13 Nov 2015) |
| Document date: | 25 Aug 15 |
| Document status: | Adopted text published |
| Regarding: | UN R85 Net Power Measurement |
| Adoption Vote | |
| This proposal (WP.29/2015/102), Not amended, was adopted by the World Forum. Thirty-five Contracting Parties out of the 42 applying UN R85 were present for the vote by AC.1. Thirty-five voted in favor with zero against and zero abstaining. | |
| View full document file for more information | |
Proposal to clarify the wording of the determination of the net power for electric motors and to correct an error in the formula presented in paragraph 5.4.2. Diesel engines – Factor αd. The parameter “fm” in the equation should be a superscript (e.g., meaning “to the power of fm”). Through a transcription error, this factor was rendered in normal text.
| Reference Number: | WP.29/2018/50 |
| Meeting Session(s): | 175th WP.29 session (18-22 Jun 2018) |
| Document date: | 05 Apr 18 |
| Document status: | Adopted text published |
| Regarding: | UN R85 Net Power Measurement |
| Adoption Vote | |
| This proposal (WP.29/2018/50) was adopted by the World Forum. Thirty-three Contracting Parties out of the 45 applying UN R85 were present for the vote by AC.1. Thirty-three voted in favor with zero against and zero abstaining. | |
| View full document file for more information | |
Proposal to reduce testing burdens by introducing an alternative test method to “decrease the charge air cooler outlet temperature by the same amount that the ambient conditions for the vehicle test varied from the standard temperature.” This aligns with SAE J1349, “9.3 Application of Vehicle Transient Data to Net Power Test.”
| Reference Number: | WP.29/2019/44 |
| Meeting Session(s): | 178th WP.29 session (24-28 Jun 2019) |
| Document date: | 11 Apr 19 |
| Document status: | Adopted by WP.29 |
| Regarding: | UN R85 Net Power Measurement |
| Adoption Vote | |
| This proposal (WP.29/2019/44) was adopted by the World Forum. Thirty-five Contracting Parties out of the 47 applying UN R85 were present for the vote by AC.1. Thirty-five voted in favor with zero against and zero abstaining. | |
| View full document file for more information | |
Proposal to allow an alternative test method (recognized in SAE J1349) to “set the charge air cooler outlet temperature during bench test to temperature which was observed by vehicle test and corrected to the reference temperature specified in paragraph 5.2.1.” of Annex 5.
| Reference Number: | WP.29/2019/112 |
| Meeting Session(s): | 179th WP.29 session (12-14 Nov 2019) |
| Document date: | 27 Aug 19 |
| Document status: | Formal WP.29 review |
| Regarding: | UN R85 Net Power Measurement |
| Adoption Vote | |
| This proposal (WP.29/2019/112) was adopted by the World Forum. Thirty-six Contracting Parties out of the 47 applying UN R85 were present for the vote by AC.1. Thirty-six voted in favor with zero against and zero abstaining. | |
| View full document file for more information | |
Proposal to align UN R85 with ISO 1585:2020 and clarify the scope with regard to electric drive trains.
| Reference Number: | WP.29/2022/75 |
| Meeting Session(s): | 187th WP.29 session (20-24 Jun 2022) |
| Document date: | 06 Apr 22 |
| Document status: | Adopted by WP.29 |
| Regarding: | UN R85 Net Power Measurement |
| View full document file for more information | |
Proposal to permit the use of hydrogen (H2) as fuel for type approval of heavy-duty vehicles and to explicitly permit the usage of the reference fuel required for emission testing when the manufacturer applies for UN Regulations Nos. 24 and/or 49 type approval at same time.
| Reference Number: | WP.29/2023/64 |
| Meeting Session(s): | 190th WP.29 session (19-22 Jun 2023) |
| Document date: | 05 Apr 23 |
| Document status: | Adopted by WP.29 |
| Regarding: | UN R85 Net Power Measurement |
| Adoption Vote | |
| This proposal (WP.29/2023/64) was adopted by the World Forum. Thirty-two Contracting Parties out of the 50 applying UN R85 were present for the vote by AC.1. Thirty-two voted in favor with zero against and zero abstaining. | |
| View full document file for more information | |
Proposal to clarify and update requirements for fitment of auxiliaries when testing the net power or 30 minutes power of electric drive trains.
| Reference Number: | WP.29/2024/51 |
| Meeting Session(s): | 193rd WP.29 session (24-28 Jun 2024) |
| Document date: | 11 Apr 24 |
| Document status: | Adopted by WP.29 |
| Regarding: | UN R85 Net Power Measurement |
| View full document file for more information | |
| Documents establishing the amendments | |||||
|---|---|---|---|---|---|
| Supplement 1 | |||||
| Supplement 2 | |||||
| Supplement 3 | |||||
| Supplement 4 | |||||
| Supplement 5 | |||||
| Supplement 6 | |||||
| Supplement 7 | WP.29/2015/102 | ||||
| Supplement 8 | WP.29/2018/50 | ||||
| Supplement 9 | WP.29/2019/44 | ||||
| Supplement 10 | WP.29/2019/112 | ||||
| Supplement 11 | WP.29/2022/75 | ||||
| Supplement 12 | WP.29/2023/64 | ||||
| Supplement 13 | WP.29/2024/51 | ||||