UN R83 Supplement 15 (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 15 to the 07 series of amendments
Supplement 14 → 15
- What changed
- Under paragraph 9.3.5.1., the number of sample lots now depends on “the annual production volume of an in-service family intended for sales in the contracting parties that apply this Regulation”. Before, it depended on the annual sales volume in the territories of a regional organization.
- Under new paragraph 9.3.5.3., in-service conformity checks for the Type I test are not mandatory “if the annual production volume of an in-service family intended for sales in the contracting parties that apply this Regulation was less than 5 000 vehicles for the previous year”.
- Under paragraph 3.2.1.2. of Annex 11, a manufacturer may now disable “any specific OBD monitor for a given driving cycle”, instead of “the OBD system”, under the conditions of that paragraph.
- Why
- One proposal aims “to allow measurement equipment compliant with the technical requirements of UN Regulation No. 154 to be used for test to UN Regulations No. 83 and 101”.
- Another proposal addresses the correction of the recursive formula for Vn in paragraph 6. of Appendix 2. It also aligns the approval certificates of the 06 and 07 series of amendments with the latest changes to UN Regulation No. 24.
- The expert from OICA says in an informal document that it would be helpful to clarify that testing could be based on production volumes. One reason is that many Contracting Parties do not have monitoring of vehicle registrations. It also says that the 05 series threshold of vehicle sales, below which no ISC testing was necessary, should be re-introduced.
Q1What changed19 changes
Sample lots based on production volume (para. 9.3.5.1. and Table 4)
Under paragraph 9.3.5.1., the number of sample lots now depends on “the annual production volume of an in-service family intended for sales in the contracting parties that apply this Regulation”. This applies when the statistical procedure defined in Appendix 4 is used for tailpipe emissions. Before, it depended on the annual sales volume of an in-service family in the territories of a regional organization, for example the European Union. In Table 4, the word “Registrations” is now “Production Volume”.
When in-service conformity checks for the Type I test are not mandatory (para. 9.3.5.3.)
Under new paragraph 9.3.5.3., in-service conformity checks for the Type I test (for tailpipe emissions) are not mandatory “if the annual production volume of an in-service family intended for sales in the contracting parties that apply this Regulation was less than 5 000 vehicles for the previous year”.
Disablement of specific OBD monitors (Annex 11, para. 3.2.1.2.)
Under paragraph 3.2.1.2. of Annex 11, a manufacturer may now disable “any specific OBD monitor for a given driving cycle”, instead of “the OBD system”, under the conditions of that paragraph. The temperature condition is now “ambient or engine temperatures below 266 K (-7° C)”, instead of “ambient engine starting temperatures below 266 K (-7° C)”. The condition “at elevations over 2,500 metres above sea level” and the data and/or engineering evaluation that the manufacturer submits stay the same. A manufacturer may also request disablement of any specific OBD monitor “at other ambient temperatures or other elevations”, “if they demonstrate to the authority with data and/or an engineering evaluation that misdiagnosis would occur under such conditions”. Before, the request was for disablement of the OBD system “at other ambient engine starting temperatures”.
Standards for the transmission of OBD relevant information (Annex 11, Appendix 1, para. 6.5.3.2.)
In the list of standards used for the transmission of OBD relevant information, standard (f) is now SAE J 1979-2 “E/E Diagnostic Test Modes: OBDonUDS”, April 2021. Before, standard (f) was ISO 14229:2013 “Road vehicles – Unified diagnostic services (UDS) with the restriction, that only 6.5.3.1.(a) may be used as a data link”. The standards (e) or (f) may be used as an option instead of (a). Before, the text said “(e) and (f)” and added “not earlier than 1 January 2019”. In standard (d), the date of SAE J2012 is now written “7 March 2013” instead of “07 March 2013”.
Test equipment that complies with UN Regulation No. 154 (Annexes 4a and 7)
Annex 4a and Annex 7 now have new text for “test and measurement equipment that is compliant with the technical requirements of UN Regulation No. 154 original series or later version”. For this equipment, “the requirements on the technical equipment described in UN Regulation No. 154 may be followed”. In all other cases, “the following requirements shall apply”. Appendix 6 to Annex 4a adds: “In case of the equipment that meets UN Regulation No. 154 requirements, this application may not be required”.
Recursive formulae for the test statistic (Appendix 2, para. 6.)
Paragraph 6. of Appendix 2 gives recursive formulae that are useful for computing successive values of the test statistic. In the formula for Vn², the last term is now (d̄n − dn)² divided by (n − 1). Before, the square applied to the whole fraction (d̄n − dn)/(n − 1).
Smoke opacity test results (Annex 2, para. 2.4.)
Paragraphs 2.4.1. and 2.4.2.1. now include “(if any)”: the technical service test report number at steady speeds and the measured value of the absorption coefficient. The smoke opacity footnote now reads “Smoke opacity values according to provisions laid out in UN Regulation No. 24”. Before, it read “Smoke opacity measurements to be carried out according to provisions laid out in Regulation No. 24”.
Q2Why it changed
- Proposed by
- Expert from the International Organization of Motor Vehicle Manufacturers
- Working party
- GRPE, 86th session (May–June 2022)
Reasons
One proposal aims “to allow measurement equipment compliant with the technical requirements of UN Regulation No. 154 to be used for test to UN Regulations No. 83 and 101”. It says that the UN Regulation No. 154 equipment has been updated and regulated based on the UN Regulation No. 83 equipment. OICA would like to make the proposals “in consideration of further operational efficiency”.
Sources (3)
“This document aims to allow measurement equipment compliant with the technical requirements of UN Regulation No. 154 to be used for test to UN Regulations No. 83 and 101.”
“In fact, the UN Regulation No. 154 equipment has been updated and regulated based on the UN Regulation No. 83 equipment”
“For OICA as well, we would like to make the following proposals in consideration of further operational efficiency.”
Another proposal addresses the correction of the recursive formula for Vn in paragraph 6. of Appendix 2.
Source
“This proposal addresses the correction of the recursive formula for Vn of paragraph 6. in Appendix 2 of the 05, 06 and 07 series of amendments of UN Regulation No. 83.”
This proposal also aligns the approval certificates of the 06 and 07 series of amendments with the latest changes to UN Regulation No. 24.
Source
“This proposal aligns the approval certificates of the 06 and 07 series of amendments to UN Regulation No. 83 with the latest changes to UN Regulation No. 24.”
Proposer's reason (informal document GRPE-86-24-Rev.1)
Many Contracting Parties do not have monitoring of vehicle registrations, and manufacturers have difficulties obtaining accurate information from importers and sales companies. So it would be helpful to clarify that testing could be based on production volumes. The 05 series of amendments contained a threshold of vehicle sales below which no ISC testing was necessary. This threshold does not appear for Type 1 testing in the 06 or 07 series of amendments. Similar text in paragraph 9.3.5.2. in the context of IUPR may be the cause for an unintentional removal. As it is very difficult to source vehicles with low sales, this threshold should be re-introduced.
Submitted by the expert from OICA. Working party adoption: ECE/TRANS/WP.29/GRPE/86, para. 23.
Sources (4)
“As many Contracting Parties do not have monitoring of vehicle registrations, and manufacturers have difficulties obtaining accurate information from importers and sales companies, it would be helpful to clarify that testing could be based on production volumes.”
“The 05 series of amendments contained a threshold of vehicle sales below which no ISC testing was necessary.”
“it does not appear for Type 1 testing in the 06 or 07 series of amendments”
“As it is very difficult to source vehicles from vehicles with low sales, this threshold should be re-introduced.”
Proposer's reason (informal document GRPE-86-12)
The altitude of 2500 m in paragraph 3.2.1.2. should remain unchanged. This permits continuity of existing approvals to UN Regulation No. 83. The altitude is covered by the value of 2400 m in UN Regulation No. 154. Other than this altitude, the proposal aligns the text of UN Regulation No. 83 with UN Regulation No. 154. This enables harmonized development of OBD systems.
Submitted by the experts from OICA. Working party adoption: ECE/TRANS/WP.29/GRPE/86, para. 23.
Sources (3)
“The altitude of 2500m in paragraph 3.2.1.2. should remain unchanged.”
“This permits continuity of existing approvals to UN Regulation No. 83 whilst being covered by the value of 2400m in UN Regulation No. 154.”
“Other than the altitude mentioned above, this proposal aligns the text of UN Regulation No. 83 with that of UN Regulation No. 154, thus enabling harmonized development of OBD systems.”
Document trail
- 2022-03ProposalECE/TRANS/WP.29/GRPE/2022/10Proposal by the expert from OICA on the recursive formula and the approval certificate
- 2022-03ProposalECE/TRANS/WP.29/GRPE/2022/13Proposal by the expert from OICA on measurement equipment compliant with UN Regulation No. 154
- —Amended in sessionGRPE-86-12Additional content in ECE/TRANS/WP.29/GRPE/2022/10, with changes to the OBD chapter
- —ProposalGRPE-86-24-Rev.1Informal proposal by the expert from OICA on the sampling of vehicles for in-service conformity testing
- —Working party adoptsECE/TRANS/WP.29/GRPE/86GRPE adopted the proposals, as combined in Annex VI of its session report
- 2022-08Sent to WP.29ECE/TRANS/WP.29/2022/136Text that GRPE sent to WP.29 and AC.1
- 2022-11WP.29 adoptsECE/TRANS/WP.29/1168Adopted at the 188th session (session report, para. 138)
- 2023-06-05In forceC.N.171.2023.TREATIES-XI.B.16.83UN depositary notification
Q3Who is affected
Vehicle manufacturer
- For the statistical procedure of Appendix 4 (tailpipe emissions), base the number of sample lots on “the annual production volume of an in-service family intended for sales in the contracting parties that apply this Regulation” (paragraph 9.3.5.1.).
- For the Type I test, check if “the annual production volume of an in-service family intended for sales in the contracting parties that apply this Regulation” was less than 5 000 vehicles for the previous year (paragraph 9.3.5.3.).
- To disable “any specific OBD monitor for a given driving cycle” under Annex 11, paragraph 3.2.1.2., submit the data and/or engineering evaluation it requires.
- Update your OBD documents that cite standard (f): it is now SAE J 1979-2 “E/E Diagnostic Test Modes: OBDonUDS”, April 2021.
- Check if your test and measurement equipment “is compliant with the technical requirements of UN Regulation No. 154 original series or later version” (Annexes 4a and 7).
Component supplier
- Be ready to support disablement requests for “any specific OBD monitor for a given driving cycle” with data and/or an engineering evaluation (Annex 11, paragraph 3.2.1.2.).
- Check if your OBD communication can use standard (f), SAE J 1979-2, as an option instead of (a) (Annex 11).
Technical service / Approval authority
- Be ready for data and/or engineering evaluations on the disablement of “any specific OBD monitor for a given driving cycle” (Annex 11, paragraph 3.2.1.2.).
- For the Appendix 4 statistical procedure (tailpipe emissions), be ready for sample lot numbers based on “the annual production volume of an in-service family intended for sales in the contracting parties that apply this Regulation” (paragraph 9.3.5.1.).
- Be ready for “test and measurement equipment that is compliant with the technical requirements of UN Regulation No. 154 original series or later version” (Annexes 4a and 7).
- If you use the recursive formulae of Appendix 2, update the formula for Vn² to the new text.
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ⓘ This report gives advice only. It is not legal or type-approval advice.
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