42. The Chair of the informal group on GFV reported on the work progress made by the group (GRPE-65-33). Having mentioned the GFV interest in the activities of the Vehicle Propulsion System Definitions informal working group and having updated GRPE on the work of the Liquefied Natural Gas Task Force (LNG TF), he focused on the activities of the Heavy Duty Dual Fuel Task Force (HDDF TF). Concentrating on HDDF engines, he informed GRPE that the HDDF TF experts developed a draft proposal to amend UN Regulation No. 49 to enable the type approval of new Euro V heavy duty dual-fuel engines and vehicles (GRPE-65-37), and he mentioned that an updated version of it will be submitted as an official document for the next GRPE session, in June 2013 (see paragraph 32.).

43. Expecting increase in the interest for retrofitting systems, the expert from OICA introduced GRPE-65-36, containing comments on dual-fuel engines and recommending that only dual-fuel fuel specific issues should be addressed by the HDDF TF. He stressed the need to introduce general rules and clear principles for the retrofitting of diesel engines before starting to work on retrofit issues. The expert from France welcomed the recommendations by OICA and expressed the interest to contribute to the process. The expert from Italy welcomed the introduction on general rules, also underlining that this should not result in delays in the development of regulatory texts on the retrofit of diesel engines.

44. GPRE welcomed the rules and principles for retrofitting diesel engines suggested by OICA, requesting GFV to take them into account without the generation of delays in the regulatory process. The GFV Chair assured GRPE that this will be the case. Given the limited room availability, the GFV informal group and the HDDF TF will meet jointly at the next GRPE session, in June 2013.