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

Working draft of the text to introduce type approval provisions of fuel selection system.

Draft text to introduce type approval provisions for “valve control at stop-start”.

Document prepared for GRPE consideration following the approval by GRSG of amendments proposed by the LNG Task Force to introduce provisions for LNG systems into UN Regulation 110 (document GRSG/2013/7). This document concerns LNG holding time and the potential for methane release (i.e., venting from boil-off).

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 applications 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.

Overview of liquefied petroleum gas direct injection systems in dual fuel vehicles and implications for the amendment of UN R67.

Proposal for a draft supplement to UN R115 or for a draft corrigendum to Supplement 5 to the regulation (reference document WP.29/2012/104). The amendment would replace FC_mean with FC_norm and provide an improved definition of the term.

Heavy Duty Dual Fuel Task Force proposal to modify the 05 series of amendments of UN Regulation No. 49 (Euro V) in order to extend the pollutant emission requirements to dual-fuel heavy duty engines and vehicles.

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

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”.

Copy of the proposal to introduce type approval provisions for “valve control at stop-start” into UN R110 (originally submitted to the Working Party on General Safety as document GRSG/2013/26 for consideration at their October 2013 session).

Copy of the proposal to introduce type approval provisions for “valve control at stop-start” into UN R67, submitted to the Working Party on General Safety as document GRSG/2013/24 for consideration at its October 2013 session.

Copy of the proposal to clarify the text concerning automatic valves in the draft Supplement 1 to the 01 series of amendments to UN R110, submitted to the Working Party on General Safety as document GRSG/2013/28 for consideration at their October 2013 session.

Presentation on the European vehicle natural gas market and EC program to establish a European standard for a quality specification for biomethane to be used as a fuel for vehicle engines; and a Technical Specification or European Norm for a quality specification for biomethane to be injected into natural gas pipelines.

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.

Presentation to the 95th session of the Working Party on the Transport of Dangerous Goods (WP.15).

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).

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.

LNG Task Force update, including review of issues concerning dangerous-goods transport vehicles (ADR vehicles).