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.

Copy of the GRPE submission prepared by the GFV Chair of the informal group to correct a measurement error contained in documents GRPE/2012/6 (concerning UN R83) and GRPE/2012/7 (concerning UN R115) when weighing method and G25 reference fuel are used.

Documents GRPE/2012/6 and 7 introduce the calculation of NG/biomethane energy ratio during a type I cycle by weighing the NG/biomethane mass consumed. The formulas are affected by an error when G25 reference fuel is used. This proposal precribes a modification to the previous formulas.

Revised version of document GRPE-62-17 prepared by the chair of the GFV informal group in order to extend the scope of Regulation No. 85 to include heavy-duty dual-fuel (diesel-gas) engines.

Corrections to align the unit of each factor in the equations 8-2, 8-4, 8-6, and 8-10 in paragraph 8 and to Annex 13, paragraph 1, Figure A13-1 where, in the upper figure for “gear use during acceleration phases”, the acceleration gear 1 incorrectly starts from zero.

In 2011, the WLTP-DTP group agreed to pursue an improved definition of vehicle test mass and a step-less approach to the inertia class system. This revised document describes the current view on the combined approach for vehicle test mass, inertia setting, tire and vehicle selection.

Assessment of hardware-in-the-loop simulation (HILS) methodologies and proposals for enhancements (e.g. more topologies, component library, temperature signals to include cold start tests).

Work package 3: Extension of hardware-in-the-loop simulation (HILS) to non-electrical hybrids currently not
covered by Kokujikan No. 281.

Summary report (identical to document HDH-10-03) on the assessment of the hardware-in-the-loop simulation (HILS) methodology for heavy-duty hybrid emissions proposed by Japan.

Review of Japanese research into procedures for assessing the impact of air-conditioning systems on vehicle fuel efficiency.

Introduction to the EC intentions regarding L-category vehicles (powered cycles, mopeds, motorcycles, tricycles and quadricycles) in preparation for the stakeholder workshop scheduled for June 8, 2012.

Presentation prepared for the stakeholder consultation workshop scheduled for 8 June 2012 reviewing the aims of the EC’s International environmental and propulsion performance requirements (IEPPR) of L-category vehicles initiative.

Draft proposal for the terms of reference (aims, organization, and procedures) of a WP.29 informal working group for the revision and amendment of international L-Category vehicle requirements in the area of environmental and propulsion performance.

Introduction to the research program developed to support the European Commission’s “Revision and Amendments of International L-category Vehicle Approval in the Area of Environmental Performance and Propulsion Requirements” (IEPPR) initiative.

Overview of TU Graz and TNO evaluation of hardware-in-the-loop simulation methodologies covering the test cycle and vehicle related parameters, harmonisation with CO2 test methods, inclusion of power take-off, and worldwide harmonized vehicle cycle weighting factors.

Status report of the development of a harmonized drive cycle for the proposed GTR on light vehicle emissions.

Proposals for the further development of the light-duty vehicle test cycle.

Introductory proposals to further discussions on the use of weighting factors for various categories of light-duty vehicles.