Proposal to amend paragraph 1.1., footnote 1 to update the reference to the Consolidated Resolution on the Construction of Vehicles (R.E.3.); amend paragraph 4.4.1. to establish requirements for a dual-fuel operating mode indicator including visual and audio signals, with restrictions on indicator design and safety alert priority; amend paragraph 4.4.1.1. to require warnings when engine operation is forced to diesel mode and signals to an ADS feature; and amend paragraph 7.1. to specify OBD system requirements for diesel and dual-fuel operation modes, including malfunction detection and driver notification procedures.

Proposal to enable the approval of vehicles equipped with an Automated Driving System under this Regulation.

Updated version with in-session revisions.

In-session revisions to original version.

Proposal to restrict the application of CO2 specific emission limits only to NMHC and CO emissions (back-to-back comparison of NOx and PM to apply under the regulation in any case). The proposal also aligns the text where applicable with the intent of paragraph 2.3.15.: “R49 original emission limits” means the emission limits as defined in Regulation No. 49 to which the original engine system was approved."

Proposal to restrict the application of CO2 specific emission limits only to NMHC and CO emissions (back-to-back comparison of NOx and PM to apply under the regulation in any case). The proposal also aligns the text where applicable with the intent of paragraph 2.3.15.: “R49 original emission limits” means the emission limits as defined in Regulation No. 49 to which the original engine system was approved."

During the June 2016 GRPE session, AEGPL raised concerns regarding the back-to-back approach for the simplified test of retrofitted dual-fuel engines because, in some cases, the hydrocarbons (HC) and/or carbon monoxide (CO) emission values of the original diesel engine are far below the emission limit (see GRPE-73 session report, para. 28). AEGPL proposed a solution in document GRPE-73-07. However the Netherlands is concerned that:

1. The emission performance of the selected diesel engine is not known (above or below the emission limit and how far from the limit);
2. Non-methane hydrocarbons (NMHC) emission cannot be disregarded because NMHC is an important air quality regulated pollutant emission; and
3. The diesel emissions of CO and HC could be far below the emission limit and hence a factor of two would not be sufficient while increasing this factor is problematic.

Contracting Parties and stakeholders have discussed a solution, presented in this proposal, to compare measured emissions of a retrofitted dual-fuel engine with the brake specific emission limits using a CO2 specific emissions approach. This proposal would amend the draft regulation pending before WP.29 (document WP.29/2016/110).

Proposal for a new Regulation on uniform provisions concerning the approval of Heavy Duty Dual-Fuel Engine Retrofit Systems (HDDF-ERS) to be installed on heavy duty diesel engines and vehicles. Please note that Japan notified the UN Secretary-General on 1 February 2017 of its intention not to apply this regulation from the date it enters into effect (June 2017). Japan remains free to adopt the regulation at a later date.

Presentation made to the GRPE June session (as document GRPE-73-29). Presentation on the background and accomplishments of the GFV informal group from January 2008 to June 2016 as the group concludes its final effort on heavy-duty dual fuel engine retrofit systems.

Version 3 as of 8 June 2016.

Presentation on the background and accomplishments of the GFV informal group from January 2008 to June 2016 as the group concludes its final effort on heavy-duty dual fuel engine retrofit systems.

Amendments to the proposal as presented in document GRPE/2016/12.

The latest amendments to the formal proposal GRPE/2016/12 as agreed within the informal group on Gaseous Fueled Vehicles (GFV).

Proposal for amendments to document GRPE/2016/12 for consideration by the GFV informal group and submission to GRPE for consideration of the proposal for a new regulation during its June 2016 session.

Revised version of the proposal for a new regulation concerning dual-fuel retrofit systems (document GPRE/2016/12) incorporating and highlighting the amendments and corrections presented in document GFV-45-02.

Proposal for a new regulation to enable type approval of dual-fuel retrofit systems to be installed on already approved and in service heavy duty diesel engines and vehicles.

Status of the draft regulation on retrofit dual fuel systems for heavy-duty vehicles anticipated for submission to the June GRPE session.

Discussion of CO₂ and O₂ used methods for emissions performance measurement.

This document is a draft proposal of a new regulation prepared by the GFV informal working group to enable type approval of dual-fuel retrofit systems to be installed on already approved and in service heavy duty diesel engines and vehicles. GFV intends to submit a working document for the 73rd session of GRPE.

Differences between the January 8 version and the previous December 21, 2015 version.

Working draft regulation on uniform provisions concerning the approval of dual-fuel retrofit systems to be installed on heavy duty diesel engines and vehicles.

List of outstanding issues of the Heavy-duty Dual Fuels task force group as of 29 October 2014.

Draft as of discussions through 23 May 2014.

Draft new Regulation on uniform provisions concerning the approval of dual fuel retrofit systems to be installed on heavy duty diesel engines and vehicles.

Version 7 of the working draft regulation for HDDF retrofit systems under the custodianship of the AEGPL as revised during the 32nd GFV/HDDF group sessions.

Draft revision 01 (second issue) of the draft new regulation on uniform provisions concerning the approval of dual fuel retrofit systems to be installed on heavy duty diesel engines and vehicles submitted by ACEA. The previous version (Revision 00: first issue) was submitted by the AEGPL.

Draft text of the proposed regulation on heavy-duty vehicle dual-fuel retrofit systems (version 7.0 as prepared by the AEGPL).

Report from the special session focused on retrofit heavy-duty dual fuel systems.

Status report on the group’s current activities, including work on a new regulation covering heavy-duty dual-fuel retrofit systems.

Status report on the work to develop standards for heavy-duty vehicle dual-fuel retrofit systems.

Spreadsheet detailing the status of issues being addressed under the heavy-duty vehicle dual-fuel retrofit systems program.

E-mail presenting AECC concerns with the proposed definition of “retrofit” and clarification of engine family definition parameters.

AECC comments concerning the proposed definition of “retrofit” and clarification of engine family definition parameters.

Initial working draft for a regulation to provide a framework for approvals of engine conversions (such as in retrofitting an engine for dual-fuel use).

Draft new Regulation on uniform provisions concerning the approval of specific LPG (liquefied petroleum gases) or NG (compressed natural gas/bio-methane/liquefied natural gas) dual fuel retrofit systems and dual fuel retrofitted engines to be installed in heavy duty applications

Presentation on defining the terms “retrofit” and “conversion” in the context of equipping heavy duty vehicles with dual-fuel systems.

Overview and update on the proposed new regulation on retrofit dual-fuel systems for heavy-duty vehicles.

Initial draft version of the new Regulation on “uniform provisions concerning the approval of specific LPG (liquefied petroleum gases) or NG (compressed natural gas/bio-methane/liquefied natural gas) dual fuel retrofit systems and dual fuel retrofitted engines to be installed in heavy duty applications”.

Draft new Regulation on uniform provisions concerning the approval of specific LPG (liquefied petroleum gases) or NG (compressed natural gas/bio-methane/liquefied natural gas) dual fuel retrofit systems to be installed in heavy duty vehicles, agricultural and forestry tractors and non road mobile machinery equipped with Compression Ignition engines

Presentation on the aims of the proposal, to be considered at the June 2013 GRPE session, for a new UN Regulation concerning LPG (liquefied petroleum gases) or NG (compressed natural gas/bio‐methane/liquefied natural gas) dual fuel retrofit systems to be installed in heavy duty diesel applications.

Some corrections to Annex 4B were introduced when that Annex was merged into the new Annex 4 in Revision 6 of UN R49. These corrections were not carried over into Annex 4B as it stands in Revision 5; however, some of these are necessary for dual-fuel engines and vehicles. The chair of the GFV Heavy-duty Dual Fuel Task Force has prepared this document to correct the oversight.

GFV Chairman: Dual-fuel retrofit certification concept

Text as prepared by the informal HDDF Task Force within the GFV informal working group in order to enable the type approval of new EURO V heavy duty dual-fuel engines and vehicles

Presentation arguing for a “basic rule” to ensure a consistent framework for engine retrofit regulations.

US EPA presentation at the Clean Cities Summit held in Indianapolis on June 28, 2011, transmitted to GFV courtesy of Jeff Seisler representing NGV Global and Clean Fuels Consulting.

Report of the 22nd informal group on gaseous-fueled vehicles meeting.

Presentation of the Task Force on Heavy-duty Dual Fuel vehicles to the Informal Group on Gaseous Fueled Vehicles

GRPE-adopted proposal to introduce provisions for heavy-duty dual-fuel vehicles into UN Regulation No. 85.

Text adopted by the GRPE to amend Regulation No. 49 in order to establish provisions for the type-approval of heavy-duty dual-fuel vehicles.

The text adopted by GRPE at its sixty-fourth session (see para. 35 of the session report) to amend UN Regulation No. 49 in order to extend Euro VI pollutant emission requirements to dual-fuel heavy duty engines and vehicles.

Presentation on the status of GFV activities, including for heavy-duty dual-fuel vehicles, bi-fuel gas vehicles, liquefied natural gas (LNG) vehicles, and support to the European Commission concerning THC/CH4 (methane).

Gaseous-fueled vehicles informal group review of the proposals developed by the Heavy-Duty Dual-Fuel Task Force to introduce related provisions into UN Regulations Nos. 49 and 85.

Corrections to the document GRPE/2012/13/Rev.1 that proposes to introduce complementary specifications to the 06 series of amendments of UN R49 towards type-approving heavy-duty dual-fuel vehicles.

Document GRPE/2012/13/Rev.1 proposes to introduce complementary specifications to the 06 series of amendments of UN R49 towards the type-approval of heavy-duty dual-fuel vehicles.

Consolidated proposal for an amendment to Regulation No. 49 towards the type-approval of heavy-duty dual-fuel vehicles, incorporating:
- Working document GRPE/2012/13/Rev.1.
- Informal document GRPE-64-18 completing the working document
- Informal document GRPE-64-17 correcting the working document

This document is a revised version of informal document GRPE-62-17 intended to introduce provisions for heavy-duty dual-fuel vehicles into UN Regulation No. 85 in accordance with those proposed in the GFV proposal to amend Regulation R49.

Document GRPE/2012/13/Rev.1. contains all the major amendments to Regulation No. 49 that are considered necessary to type approve heavy-Duty dual-fuel engines and vehicles, except appendixes 3, 4, 5 and 6 of Annex 15. This document corrects typographic errors and cross-references in that proposal.

Working draft of the document consolidating working document GRPE/2012/13/Rev.1 with the pending informal documents GRPE-64-xx1 (completing the working document) and GRPE-64-xx2 (correcting the working document).

Document GRPE/2012/13/Rev.1. contains amendments to Regulation No. 49 considered necessary to type-approve heavy-duty dual-fuel engines and vehicles, except for appendixes 3, 4, 5 and 6 of Annex 15. This document provides the missing appendices and offers editorial corrections to UN R49.

Consolidated proposal from the GFV Task Force on Heavy-duty Dual-fuel vehicles for an amendment to Regulation No. 49 in view of type-approving such vehicles.

Revised submission by the Chair of the informal group on Gaseous Fuelled Vehicles–Heavy Duty Dual Fuel Task Force to introduce complementary specifications to the 06 series of amendments of UN R49. The appendixes 3, 4, 5 and 6 are not yet finalized. This document replaces GRPE/2012/13.

Complementary specifications, as adopted by the gaseous fueled vehicles informal group at its 19th session, to UN R49: Revision 6/06 series of amendments) in order to enable the type approval of new EURO VI heavy duty dual-fuel engines and vehicles.

Agenda for the Gaseous Fueled Vehicles meeting on heavy-duty dual fuels and Euro 6.

Report from the January 17, 2012 session of the Gaseous-Fuelled Vehicles Informal Group.

Status report of the HDDF task force for presentation to the Working Party on Pollution and Energy during its 63rd session.

Progress report of the informal group working on heavy-duty dual-fuel vehicle provisions in UN Regulations 49, 85, and 115.