UN R115 Supplement 9 (00 series) · UNECE Regulation No. 115 (ECE R115) — Uniform provisions concerning the approval of: I. Specific LPG (liquefied petroleum gases) retrofit systems to be installed in motor vehicles for the use of LPG in their propulsion systems II. Specific CNG (compressed natural gas) retrofit systems to be installed in motor vehicles for the use of CNG in their propulsion systems.
UN R115 — Supplement 9 to the 00 series of amendments
Supplement 8 → 9
- What changed
- New paragraph 2.5.1.4. makes the retrofit vehicle family relation valid for both indirect and direct injection petrol vehicles, if all its conditions are satisfied.
- The conditions are a “master-slave” retrofit system, indirect (port fuel) gas injection mode, and at least one tested petrol direct injection parent vehicle.
- Paragraph 2.5.1.5. for “master-slave” systems now refers to the definition in paragraph 2.1.5.
- Why
- The amendment lists the conditions for indirect and direct injection vehicles to belong to the same vehicle family.
- Direct injection vehicles that operate with indirect gas injection apply the same gas injection technology as indirect injection vehicles.
- The emission limits remain those of the parent vehicle.
Q1What changed5 changes
Direct and indirect injection petrol vehicles in one family (para. 2.5.1.4.)
The retrofit vehicle family relation can be valid for both indirect and direct injection petrol vehicles. All the following conditions must be satisfied. The retrofit system is “master-slave” according to paragraph 2.1.5. It operates in indirect (port fuel) gas injection mode on direct petrol injection vehicles. At least one petrol direct injection vehicle has been tested as parent vehicle.
Master-slave systems with air injection or EGR (para. 2.5.1.5.)
The former paragraph 2.5.1.4. is now paragraph 2.5.1.5. It now refers to the “master-slave” definition in paragraph 2.1.5., not 2.1.6. It also uses the words “retrofit vehicle family relation applicable for the purpose of this Regulation only”. The family relation is still valid regardless of the presence of the air injection or the EGR.
Q2Why it changed
- Proposed by
- Expert from Italy
- Working party
- GRPE, 79th session (May 2019)
Reasons
The amendment lists the conditions for indirect and direct injection vehicles to belong to the same vehicle family.
Source
“This proposal amends UN Regulation No. 115 to list the conditions to be met by indirect and direct injection vehicles to be considered as belonging to the same vehicle family.”
Direct injection petrol vehicles that operate with indirect gas injection apply the same gas injection technology as indirect injection vehicles. So they should be in the same family, if at least one such vehicle is tested as parent vehicle.
Sources (2)
“Gasoline direct injection vehicles which operates in indirect gas injection should be listed in the same family as indirect gasoline injection vehicles, as the applied gas injection technology is the same”
“provided that at least one such vehicle is tested as parent vehicle according to the requirements of this Regulation”
The Netherlands asked for clearer text to make sure the Particulate Number (PN) limit is valid. Italy proposed a slight amendment to the text at the session.
Sources (2)
“The representative from Netherlands requested some clarifications to the text to make sure the Particulate Number (PN) limit was valid.”
“a proposed slight amendment to the text, as reproduced in Annex IV.”
The amendment does not change the emission limits. They remain those of the parent vehicle.
Source
“This proposal has no implications on the emissions limits that remain those of the parent vehicle.”
Document trail
- 2019-03ProposalECE/TRANS/WP.29/GRPE/2019/10Proposal by Italy
- —Working party adoptsECE/TRANS/WP.29/GRPE/79Session report, para. 32, with the text in Annex IV
- 2019-08Sent to WP.29ECE/TRANS/WP.29/2019/113Text that GRPE sent to WP.29 and AC.1
- 2019-11WP.29 adoptsECE/TRANS/WP.29/1149Adopted at the 179th session (session report, para. 116)
- 2020-05-29In forceUN depositary notification
Q3Who is affected
Vehicle manufacturer
- To put indirect and direct injection petrol vehicles in one family, use a “master-slave” retrofit system (para. 2.5.1.4.).
- Make sure the retrofit system operates in indirect (port fuel) gas injection mode on direct petrol injection vehicles.
- Test at least one petrol direct injection vehicle as parent vehicle for such a family (para. 2.5.1.4.).
- Update documents that quote the old paragraph 2.5.1.4. for “master-slave” systems to paragraph 2.5.1.5.
Component supplier
- No direct action for this role.
Technical service / Approval authority
- Make sure a family of indirect and direct injection petrol vehicles satisfies all conditions of paragraph 2.5.1.4.
- Use paragraph 2.1.5. for the “master-slave” definition in paragraphs 2.5.1.4. and 2.5.1.5.
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ⓘ This report gives advice only. It is not legal or type-approval advice.