UN R83 Supplement 16 (07 series) · UNECE Regulation No. 83 (ECE R83) — Uniform provisions concerning the approval of vehicles with regard to the emission of pollutants according to engine fuel requirements.
UN R83 — Supplement 16 to the 07 series of amendments
Supplement 15 → 16
- What changed
- For tests according to this Regulation after “[xx-xx-20xx]”, new paragraph 3.2.8. requires the rear position lamp setting that applies at ambient light above 7,000 lux.
- Paragraph 3.2.1.2. of Annex 11 now refers to “engine coolant temperatures” for OBD monitor disablement. A new sentence says that engine coolant temperature is only deemed subject to approval if it is used as a substitute to ambient temperature.
- Paragraphs 6.5.3.4. and 6.5.3.5. now say “the responsible standardisation body” instead of “a national” standardisation body.
- Why
- The proposal aims to make type-approval test conditions consistent with the introduction of the 08 series of amendments to UN Regulation No. 48.
- UN Regulation No. 48, 08 series, is aiming to allow rear position lamps and other lamps to switch OFF in ambient light above 7,000 lux.
- The experts from OICA proposed the wording changes in paragraphs 3.2.1.2. and 6.5.1.3. to avoid ambiguity.
Q1What changed10 changes
Daytime running lamps in the test (Annex 4A, para. 3.2.7.)
In paragraph 3.2.7., the sentence on switching ON the daytime running lamps during the test cycle moves from the start to the end. The other text now says “The vehicle to be tested” instead of “The vehicle tested”, and “of” instead of “among”. The text no longer says “of the vehicle” after “The daytime running lamps”.
Rear position lamps in tests (Annex 4A, new para. 3.2.8.)
New paragraph 3.2.8. applies to tests according to this Regulation performed after “[xx-xx-20xx]”. In these tests, the rear position lamps must be set to the operating condition which is applied at ambient lighting conditions exceeding 7,000 lux. The text gives the vehicle's dynamometer operation mode as an example. A new footnote says “Date to be replaced by the date of entry into force of this proposal when known”.
Engine coolant temperatures and OBD monitor disablement (Annex 11, para. 3.2.1.2.)
In the first sentence of paragraph 3.2.1.2., “ambient or engine temperatures” becomes “ambient or engine coolant temperatures”. The second sentence now says “other ambient or engine coolant temperatures” instead of “other ambient temperatures”. A new sentence says: “Engine coolant temperature is only deemed subject to approval, if it is used as a substitute to ambient temperature.” The values 266 K (-7° C) and 2,500 metres do not change.
On-board evaluation test results (Annex 11, Appendix 1, para. 6.5.1.3.)
Paragraph 6.5.1.3. now refers to emission control systems for which specific on-board evaluation tests are conducted “according to this annex”. Before, the text did not have the words “according to this annex”.
Responsible standardisation body for diagnostic data (Annex 11, Appendix 1, paras. 6.5.3.4. and 6.5.3.5.)
Paragraphs 6.5.3.4. and 6.5.3.5. now say “the responsible standardisation body” instead of “a national” standardisation body. The vehicle manufacturer must provide this body with the details of any emission-related diagnostic data related to this Regulation. This applies to data not specified in the standard listed in paragraph 6.5.3.2.(a) of this appendix.
Q2Why it changed
- Proposed by
- Expert from the International Organization of Motor Vehicle Manufacturers (OICA)
- Working party
- GRPE, 87th session (January 2023)
Reasons
The proposal aims to make type-approval test conditions consistent with the introduction of the 08 series of amendments to UN Regulation No. 48. Paragraph 3.2.7. was modified to fit with the wording of UN Regulation No. 48.
Sources (2)
“to ensure consistent type-approval test conditions with the introduction of the 08 series of amendments to UN Regulation No. 48”
“This paragraph was modified to fit with UN Regulation No. 48 wording.”
The 08 series of UN Regulation No. 48 is aiming to introduce the possibility to switch OFF rear position lamps and other lamps. This applies when ambient light conditions outside the vehicle are above 7,000 lux, to avoid unnecessary fuel consumption. The vehicle settings for the dynamometer operation must be independent of the light conditions in the laboratory. For this reason, a “trip” is proposed to represent ambient light conditions with an illuminance above 7,000 lux.
Sources (4)
“is aiming to introduce the possibility to switch OFF rear position lamps and other lamps when ambient light conditions outside the vehicle are above 7,000 lux”
“in order to avoid unnecessary fuel consumption”
“The vehicle settings for the dynamometer operation shall be independent of the light conditions in the laboratory.”
“a trip is proposed to represent ambient light conditions with an illuminance of above 7,000 lux”
Proposer's reason (informal document GRPE-87-13-Rev.2)
The words “or engine” were missing in the second sentence of paragraph 3.2.1.2. The change aligns it with the first sentence, to avoid misunderstanding and ambiguity. Engine coolant temperature is sometimes used as a substitute for ambient temperature. In this case, it is evaluated once after a longer engine shut off phase. Only in this case is an approval necessary, because this is the only case where an OBD monitor is disabled for the complete trip.
Submitted by Experts from OICA. Working party adoption: ECE/TRANS/WP.29/GRPE/87, para. 16.
Sources (4)
“the second sentence, where “or engine” was missing to avoid misunderstanding and ambiguity”
“Engine coolant temperature is sometimes used as a substitute for ambient temperature.”
“In this case, the engine coolant temperature is evaluated once after a longer engine shut off phase.”
“Only in this case an approval is necessary, as this is the only case, where an OBD monitor is disabled for the complete trip.”
Proposer's reason (informal document GRPE-87-13-Rev.2)
Paragraph 6.5.1.3. is aligned with GTR No. 15 to avoid ambiguity.
Submitted by Experts from OICA. Working party adoption: ECE/TRANS/WP.29/GRPE/87, para. 16.
Source
“Align Paragraph 6.5.1.3. with GTR No. 15 to avoid ambiguity.”
Proposer's reason (informal document GRPE-87-13-Rev.2)
International standardisation bodies (ISO, SAE) maintain the standards used for the transmission of OBD information. These standardisation bodies have to be informed.
Submitted by Experts from OICA. Working party adoption: ECE/TRANS/WP.29/GRPE/87, para. 16.
Sources (2)
“The standards used for transmission of OBD information are maintained by international standardisation bodies (ISO, SAE).”
“These standardisation body have to be informed.”
Document trail
- 2022-10ProposalECE/TRANS/WP.29/GRPE/2023/10Proposal by the expert from OICA
- —Amended in sessionGRPE-87-13-Rev.2Additional content to ECE/TRANS/WP.29/GRPE/2023/10, by the experts from OICA
- —Working party adoptsECE/TRANS/WP.29/GRPE/87Session report, para. 16 and Annex VI
- 2023-04Sent to WP.29ECE/TRANS/WP.29/2023/63Text that GRPE sent to WP.29 and AC.1
- 2023-06WP.29 adoptsECE/TRANS/WP.29/1173Adopted at the 190th session (session report, para. 165)
- 2024-01-05In forceC.N.21.2024.TREATIES-XI.B.16.83UN depositary notification
Q3Who is affected
Vehicle manufacturer
- For tests after the date in paragraph 3.2.8., set the rear position lamps as for ambient light above 7,000 lux.
- To request monitor disablement at other engine coolant temperatures, show the authority that misdiagnosis would occur (data and/or engineering evaluation).
- If your OBD uses engine coolant temperature as a substitute to ambient temperature, treat this as subject to approval.
- Check which on-board evaluation tests are conducted “according to this annex” for the serial data port output (paragraph 6.5.1.3.).
- Give the responsible standardisation body the diagnostic data details that paragraph 6.5.3.4. requires.
Component supplier
- Be ready to give the vehicle manufacturer data and/or an engineering evaluation for OBD monitor disablement at engine coolant temperatures.
- Be ready to help the manufacturer set the rear position lamps for paragraph 3.2.8. tests.
Technical service / Approval authority
- For tests after the paragraph 3.2.8. date, check the rear position lamps are set for ambient light over 7,000 lux.
- Be ready for requests to disable OBD monitors at other engine coolant temperatures (paragraph 3.2.1.2.).
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ⓘ This report gives advice only. It is not legal or type-approval advice.
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