International Organization of Motor Vehicle Manufacturers
24 Dec 2012 Dual-fuel engines and vehicles Rules for retrofitting Diesel engines (ACEA and OICA) GFV-23-06 2012-12-24 ACEA OICA
26 Nov 2013 Retrofit versus conversion (definitions) (OICA) GFV-29-03 2013-11-26 Presentation on defining the terms "retrofit" and "conversion" in the context of equipping heavy duty vehicles with dual-fuel systems. OICA
29 Nov 2013 Proposed structure for a new regulation on heavy-duty engine conversions (OICA) GFV-29-04 2013-11-29 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). OICA
11 Jun 2011 Progress report of the GFV Task Force Heavy Duty Dual Fuel vehicles (OICA) GRPE-62-21 2011-06-11 OICA
17 Jan 2013 Dual-fuel engines and vehicles: Rules for retrofitting diesel engines (OICA) GRPE-65-36 2013-01-17 Presentation arguing for a "basic rule" to ensure a consistent framework for engine retrofit regulations. OICA
13 Jan 2017 Proposal for amendments to ECE/TRANS/WP.29/GRPE/2017/4 on Heavy Duty Dual-Fuel Engine Retrofit Systems (LG Europe and OICA) GRPE-74-25 2017-01-13 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." LG Europe OICA
27 May 2025 UN R143: Screening for applicability to ADS vehicles (OICA) GRPE-AVRS-SGMA-02-06/Rev.1 2025-05-27 OICA
24 Apr 2024 UN R143: Screening for applicability to automated vehicles (OICA) GRPE-TF-AVRS-13-04/Rev.1 2024-04-24 OICA