Working Party
Session 74 | Geneva | 10-13 Jan 2017
Latest document posted on 20 Mar 2017
Reference No. Description (click for more information)
GRPE/74
Report of the GRPE on its 74th session (January 2017)
20 Mar 2017 Working Party Report GRPE-2017-0074
GRPE/74/Add.1
Addendum 1 to the report of the GRPE on its 74th session
20 Mar 2017 Working Party Report Worldwide Harmonized Light Vehicle Emissions Test Procedure WLTP Worldwide Harmonized Light Vehicles Test Procedure Adopted technical report on the development of draft Amendment 2 to global technical regulation No. 15 on Worldwide harmonized Light vehicles Test Procedures (WLTP). GRPE-2017-0074/Add.1
GRPE/74/Add.2
Addendum 2 to the report of the GRPE on its 74th session
20 Mar 2017 Working Party Report Motor vehicle evaporative emissions Evaporative emissions Adopted technical report on the development of the draft new global technical regulation on evaporative emissions test procedure for use under the Worldwide harmonized Light vehicles Test Procedure (WLTP EVAP). GRPE-2017-0074/Add.2
GRPE-74-01
Informal meetings to be held in conjunction with the GRPE (proper) session
29 Nov 2016 Working Party Informal Documents GRPE-74-0001
GRPE-74-02/Rev.1
Proposal for amendments to ECE/TRANS/WP.29/GRPE/2017/7 (Amendment 2 to GTR No. 15)
13 Jan 2017 Working Party Informal Documents Worldwide Harmonized Light Vehicle Emissions Test Procedure WLTP Worldwide Harmonized Light Vehicles Test Procedure WLTP informal working group refinements to the amendment proposal. GRPE-74-0002/Rev.1
GRPE-74-03/Rev.1
Consolidated revision of GTR No. 15 incorporating Amendment 2
13 Jan 2017 Working Party Informal Documents Electric Vehicle Environmental Performance Electric Vehicles & the Environment Worldwide Harmonized Light Vehicle Emissions Test Procedure WLTP Worldwide Harmonized Light Vehicles Test Procedure Complete version of GTR No. 15 including the proposed Amendment 2 (GRPE/2017/7) and latest refinements by the WLTP informal group (GRPE-74-02). Amendment 2 corresponds to phase 2a development of the GTR, including the following modification to the text:<ol class="alpha"><li>If an alternative value is applied for a parameter, such as a higher n_min_drive or an ASM, this parameter value has to be the same within an interpolation family (Paragraph 5.6.1.).</li><li>The mass in running order used for the calculation of the power to mass ratio is replaced by mass in running order minus 75 kg (paragraph 1. of Annex 1).</li><li>Idle engine speed n_idle is removed from the power curve measurement requirement (paragraph 2. of Annex 2).</li><li>The additional safety margin (ASM) value may be decided by manufacturer rather than the prescribed exponential curve (paragraph 3.4. of Annex 4).</li><li>The number of decimal place of road load coefficients is defined (paragraph 2.4. of Annex 4).</li><li>Additional restrictions are set to the application of the split run method for coastdown testing (paragraph 4.3.1.3.4. of Annex 4).</li><li>Specific data rejection criteria are added (paragraph 4.3.1.4.3. of Annex 4).</li><li>The “delta method” for road load determination is added (paragraph 6.8. of Annex 4 and other paragraphs. See section 4.4.25.for more detail).</li><li>The roller radius correction factor is modified(paragraph 6.6.3. of Annex 4).</li><li>The allowable combination of the test vehicle selection and family requirements are further clarified (paragraph 4.2.1.3. of Annex 4 and other paragraphs of Annex 4).</li><li>Provisions for an additional cooling fan are included(paragraph 1.1.5. and 1.1.6. of Annex 5).</li><li>The correction of measurement/recording frequency requirements are specified (over several annexes).</li><li>Calculation of the n/v ratio is defined (paragraph 8. of Annex 7).</li><li>The stepwise procedure for calculating the final test results of OVC-HEVs is added (paragraph 4.6. of Annex 8).</li></ol> GRPE-74-0003/Rev.1
GRPE-74-04
Draft technical report on the development of a new global technical regulation on Evaporative emission test procedure for the Worldwide harmonized Light vehicles Test Procedure (WLTP EVAP)
05 Jan 2017 Working Party Informal Documents Motor vehicle evaporative emissions Evaporative emissions GRPE-74-0004
GRPE-74-05
Technical report on the development of global technical regulation No. 15 on WLTP including Amendment 2
05 Jan 2017 Working Party Informal Documents Electric Vehicle Environmental Performance Electric Vehicles & the Environment Worldwide Harmonized Light Vehicle Emissions Test Procedure WLTP Worldwide Harmonized Light Vehicles Test Procedure Official technical report detailing the rationale and decision-making behind the development of Amendment 2 (Development Phase 2a) of GTR No. 15. GRPE-74-0005
GRPE-74-06
General information for the 74th GRPE session
06 Jan 2017 Working Party Informal Documents GRPE-74-0006
GRPE-74-07
WP.29 highlights for the 74th GRPE session
06 Jan 2017 Working Party Informal Documents GRPE-74-0007
GRPE-74-08
Proposal for a new Supplement to the 05 and 06 series of amendments to Regulation No. 49 (OICA)
10 Jan 2017 Working Party Informal Documents Diesel and CNG/LNG Engine Emissions Diesel/CNG/LNG Engine Emissions Uniform provisions concerning the measures to be taken against the emission of gaseous and particulate pollutants from compression-ignition engines and positive ignition engines for use in vehicles Proposal to correct and clarify the text, including to<ol class="alpha"><li>correct the constants for equation (34) to calculate exhaust mass flow using carbon balance method,</li><li>correct constants used for CVS verification,</li><li>correct the formula for regression analysis according to Annex 4, Appendix 3, and</li><li>correct the rise time (to 3.5 s from 2.5 s) for the PEM analyzers under paragraph A.2.2.1. of the 06 series.</li></ol>With regard to the 06 series, the proposal may be considered as an amendment to document GRPE/2017/6. GRPE-74-0008
GRPE-74-09
Proposal for amendments to document GRPE/2017/6 on a new Supplement to the 06 series of amendments to Regulation No. 49 (OICA)
10 Jan 2017 Working Party Informal Documents Diesel and CNG/LNG Engine Emissions Diesel/CNG/LNG Engine Emissions Uniform provisions concerning the measures to be taken against the emission of gaseous and particulate pollutants from compression-ignition engines and positive ignition engines for use in vehicles Comprehensive amendment of document GRPE/2017/6 to align UN R49 with the latest amendments of EU Euro VI legislation (Reg. EU 2016/1718), including<ol class="alpha"><li>OBD equivalency option for light commercial vehicles to be continued with step ‘D’,</li><li>editorial corrections (incl. keeping optional THC PEMS measurement for gas engines),</li><li>implementation dates in Appendix 9 table 1 (2016/1718) and Annex 3 table 1 (R49),</li><li>implement rejection note for retroactive applicability with regard to in-service conformity (paragraph 13.4.),</li></li>clarification of type approval provisions for ‘new vehicle types as of 2017’,</li><li>deletion of infeasible requirement related to the PEMS test (“…void if … no valid windows left in urban only”), second part of sentence in Annex 8, Appendix 1: A1.4.2.2.2.2.</li><li>deletion of inconsistency between work based window and CO2 mass based method regarding valid integration windows (A.1.4.2.2.2.2. versus A.1.4.3.1.2.2).</li></ol> GRPE-74-0009
GRPE-74-10
Highlights related to ECE/TRANS/WP.29/GRPE/2017/3 on WLTP EVAP (ETRMA)
12 Jan 2017 Working Party Informal Documents Motor vehicle evaporative emissions Evaporative emissions Pursuant to the development of a GTR on evaporative emissions under the WLTP informal group, ETRMA presents its views on the draft procedure in order to clarify the role of tyres. GRPE-74-0010
GRPE-74-11
Status report of the WLTP informal group
12 Jan 2017 Working Party Informal Documents Worldwide Harmonized Light Vehicle Emissions Test Procedure WLTP Worldwide Harmonized Light Vehicles Test Procedure Electric Vehicle Environmental Performance Electric Vehicles & the Environment Motor vehicle evaporative emissions Evaporative emissions GRPE-74-0011
GRPE-74-12
Status report of the EPPR informal group
12 Jan 2017 Working Party Informal Documents Motorcycle Emissions and Fuel Consumption WMTC Measurement procedure for two-wheeled motorcycles equipped with a positive or compression ignition engine with regard to the emission of gaseous pollutants, CO2 emissions and fuel consumption Motorcycle On-Board Diagnostic Systems L-OBD Project to establish a Global Technical Regulation and its homologous UN Regulation for motorcycle and moped on-board diagnostic systems. Durability of L-category Vehicle Pollution Control Devices L-vehicle Pollution Control Durability Requirements for Two- and Three-wheeled Light Motor Vehicles with regard to the Durability of the Pollution Control Devices Motorcycle crankcase and evaporative emissions Motorcycle Evaporative Emissions Measurement procedure for two- or three-wheeled light motor vehicle equipped with a combustion engine with regard to the crankcase and evaporative emissions. L-vehicle Propulsion-unit Performance Requirements Motorcycle Propulsion Unit Performance Requirements for two- and three-wheeled light motor vehicles with regard to propulsion unit performance GRPE-74-0012
GRPE-74-13
Alignment of Regulation No. 96 to EU Stage V (EC)
12 Jan 2017 Working Party Informal Documents Tractor and NRMM Engine Emissions NRMM Emissions Uniform Provisions Concerning the Approval of Compression-Ignition (C.I.) Engines to be Installed in Agricultural and Forestry Tractors and in Non-Road Mobile Machinery with regard to the Emissions of Pollutants by the Engine <a href="http://eur-lex.europa.eu/eli/reg/2016/1628/oj" target="blank" class="orange">Regulation (EU) 2016/1628</a>, also known as the NRMM Regulation or Stage V Regulation, restructures the EU regulation of non-road mobile machinery ranging from lawn mowers to snow mobiles to bulldozers, but excludes agricultural machinery (to be subjected to a separate EU regulation). In order to maintain the alignment between UN Regulations on emissions and EU emissions regulations, the EC proposes GRPE work on a new series of amendments to UN R96 (and by extension UN R120) for publication in 2018. GRPE-74-0013
GRPE-74-14
Update of Regulation No. 132 for EU Stage V (EUROMOT)
12 Jan 2017 Working Party Informal Documents Retrofit Emission Control Devices Retrofit Emissions Uniform provisions concerning the approval of Retrofit Emission Control devices (REC) for heavy duty vehicles, agricultural and forestry tractors and non-road mobile machinery equipped with compression ignition engines In line with the need to update UN R96 in response to the new EU Stage V NRMM regulation, Regulation (EU) 2016/1628 would impact UN R132. Therefore, EUROMOT recommends updating UN R132 in parallel with UN R96 and UN R120. In particular, EUROMOT proposes establishing a specific annex to UN R132 in light of the similar stringencies of EURO VI heavy duty emissions requirements and those of NRMM Stage V that would specify all the necessary additional requirements for Stage V (in a manner similar to the existing Annex 12 for emission levels equivalent to the 06 series of amendments of UN R49). GRPE-74-0014
GRPE-74-15
Status report of the EVE informal group
12 Jan 2017 Working Party Informal Documents Worldwide Harmonized Light Vehicle Emissions Test Procedure WLTP Worldwide Harmonized Light Vehicles Test Procedure Electric Vehicle Environmental Performance Electric Vehicles & the Environment GRPE-74-0015
GRPE-74-16
Proposal for amendments to ECE/TRANS/WP.29/2017/42, ECE/TRANS/WP.29/2017/43 and ECE/TRANS/WP.29/2017/44 (OICA)
12 Jan 2017 Working Party Informal Documents Motor Vehicle Emissions Motor Vehicle Emissions Uniform Provisions Concerning the Approval of Vehicles with regard to the Emission of Pollutants According to Engine Fuel Requirements Carbon Dioxide Emissions and Fuel/Energy Consumption CO2 Emissions/Fuel Consumption Uniform Provisions Concerning the Approval of Passenger Cars Powered by an Internal Combustion Engine Only, or Powered by a Hybrid Electric Power Train with Regard to the Measurement of the Emission of Carbon Dioxide and Fuel Consumption and/or the Measurement of Electric Energy Consumption and Electric Range, and of Categories M1 and N1 Vehicles Powered by an Electric Power Train Only with Regard to the Measurement of Electric Energy Consumption and Electric Range Worldwide Harmonized Light Vehicle Emissions Test Procedure WLTP Worldwide Harmonized Light Vehicles Test Procedure The subject documents would permit Contracting Parties applying UN R83 and/or UN R101 and which have transposed GTR No. 15 (WLTP) into their local legislation to refuse to accept type approvals granted under the UN R83 and/or UN R101 as a compliance alternative to their national/regional legislation (i.e., aligned with GTR No. 15). OICA proposes to clarify the intent by deleting allusions to the measure as a form of derogation, to replace the phrase "may no longer accept" with "may refuse", and to introduce a sunset clause to noting that the measure is intended as a stop-gap until such time as GTR No. 15 has been transposed into the corpus of UN Regulations. GRPE-74-0016
GRPE-74-17
Status report of the PMP informal group
13 Jan 2017 Working Party Informal Documents Particle Measurement Programme PMP Non-Exhaust Particle Emissions NEPE GRPE-74-0017
GRPE-74-18
Status report of the VIAQ informal group
13 Jan 2017 Working Party Informal Documents Mutual Resolution No. 3: Vehicle Interior Air Quality (VIAQ) MR 3: VIAQ GRPE-74-0018
GRPE-74-19
Proposal for a new Mutual Resolution on Vehicle Interior Air Quality
13 Jan 2017 Working Party Informal Documents Mutual Resolution No. 3: Vehicle Interior Air Quality (VIAQ) MR 3: VIAQ GRPE-74-0019
GRPE-74-20
Transposition of GTR 15 (WLTP) into UN Regulations under the 1958 Agreement (EC)
13 Jan 2017 Working Party Informal Documents Worldwide Harmonized Light Vehicle Emissions Test Procedure WLTP Worldwide Harmonized Light Vehicles Test Procedure Light Vehicle Emissions Type Approval Test Procedure WLTP (UNR) European Commission report on the effort to transpose the GTR on light vehicle emissions into UN type approval regulations, including handling of current UN Regulations on emissions (notably, UN R83 and UN R101) and process for implementing the WLTP requirements. GRPE-74-0020
GRPE-74-21/Rev.1
Update agenda for the 74th GRPE session
13 Jan 2017 Working Party Informal Documents Agenda updated to included latest document submissions. GRPE-74-0021/Rev.1
GRPE-74-22
Proposal of changes to document GRPE/2017/2 concerning amendments to Regulation No. 83 (Hungary and Russia)
13 Jan 2017 Working Party Informal Documents Motor Vehicle Emissions Motor Vehicle Emissions Uniform Provisions Concerning the Approval of Vehicles with regard to the Emission of Pollutants According to Engine Fuel Requirements Pursuant to GRPE discussions, the proposal adds the following paragraph to the amendment: "At the manufacturer's request, type approval granted under this Regulation may be extended from vehicles mentioned above to special purpose vehicles of categories M1, M2, N1 and N2 regardless of their reference mass. The manufacturer shall demonstrate to the Type Approval Authority which granted the type approval that the vehicle in question is a special purpose vehicle." GRPE-74-0022
GRPE-74-23
Approval of replacement pollution devices within Regulation No. 49 (CLEPA)
13 Jan 2017 Working Party Informal Documents Diesel and CNG/LNG Engine Emissions Diesel/CNG/LNG Engine Emissions Uniform provisions concerning the measures to be taken against the emission of gaseous and particulate pollutants from compression-ignition engines and positive ignition engines for use in vehicles Proposal to ensure that all replacement pollution control devices conform with the intent of UN R49 and to align UN R49 in this regard with Regulation (EU) 2016/1718. CLEPA proposes the establishment of a new annex under UN R49-05 R.49-05 to restrict the approval of a replacement device to one that “enables the engine and vehicle to comply with the rules with which it was originally in compliance”. GRPE-74-0023
GRPE-74-24
Report by the GRPE Ambassador on IWTA
13 Jan 2017 Working Party Informal Documents International Whole Vehicle Type Approval System (IWVTA) International Whole Vehicle Type Approval UN Regulation No. 0 on uniform provisions concerning the International Whole Vehicle Type Approval Light Vehicle Emissions Type Approval Test Procedure WLTP (UNR) Power Measurement of Internal Combustion Engines and Electric Motors Net Power Measurement Uniform Provisions Concerning the Approval of Internal Combustion Engines or Electric Drive Trains Intended for the Propulsion of Motor Vehicles of Categories M and N with regard to the Measurement of the Net Power and the Maximum 30 Minutes Power of Electric Drive Trains Report on the status of the International Whole Vehicle Type Approval program with regard to regulations under the purview of GRPE. GRPE-74-0024
GRPE-74-25
Proposal for amendments to ECE/TRANS/WP.29/GRPE/2017/4 on Heavy Duty Dual-Fuel Engine Retrofit Systems (LG Europe and OICA)
13 Jan 2017 Working Party Informal Documents Heavy-Duty Dual Fuel Retrofit Systems HD Dual Fuel Retrofit Systems 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 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." GRPE-74-0025
GRPE/2017/1
Provisional agenda for the 74th GRPE session
26 Oct 2016 Working Party Agenda GRPE/2017/0001
GRPE/2017/1/Add.1
Annotated provisional agenda for the 74th GRPE session
26 Oct 2016 Working Party Agenda GRPE/2017/0001/Add.1
GRPE/2017/2
Proposal for a new Supplement to the 06 and 07 series of amendments to Regulation No. 83 (Russia)
27 Oct 2016 Working Party Formal Documents Motor Vehicle Emissions Motor Vehicle Emissions Uniform Provisions Concerning the Approval of Vehicles with regard to the Emission of Pollutants According to Engine Fuel Requirements Proposal to allow the use of compliance assessments of vehicles with a reference mass less than 2,610 kg in extending the type approval to special purpose vehicles (including armoured ones) having a reference mass exceeding 2,840 kg. This proposal would align UN R83 with provisions of European Directive 2007/46/EC. GRPE/2017/0002
GRPE/2017/3
Proposal for a new GTR on evaporative emissions test procedures under the Worldwide harmonized Light vehicles Test Procedure (WLTP EVAP)
27 Oct 2016 Working Party Formal Documents Motor vehicle evaporative emissions Evaporative emissions Text prepared by the Evaporative emissions Task Force of the WLTP informal working group in line with Phase 2 of its mandate (ECE/TRANS/WP.29/AC.3/44). The WLTP referred to a first draft of this proposal (GRPE-73-12) at the seventy-third session of GRPE (see report ECE/TRANS/WP.29/GRPE/73, para. 12). GRPE/2017/0003
GRPE/2017/4
Proposal for a Supplement to the draft 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 (Netherlands)
27 Oct 2016 Working Party Formal Documents Heavy-Duty Dual Fuel Retrofit Systems HD Dual Fuel Retrofit Systems 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 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:<ol class="alpha"><li>The emission performance of the selected diesel engine is not known (above or below the emission limit and how far from the limit);</li><li>Non-methane hydrocarbons (NMHC) emission cannot be disregarded because NMHC is an important air quality regulated pollutant emission; and</li><li>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.</li></ol> 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). GRPE/2017/0004
GRPE/2017/5
Proposal for a new Supplement to the 06 and 07 series of amendments to Regulation No. 83 (OICA)
27 Oct 2016 Working Party Formal Documents Motor Vehicle Emissions Motor Vehicle Emissions Uniform Provisions Concerning the Approval of Vehicles with regard to the Emission of Pollutants According to Engine Fuel Requirements Proposal to adapt the 06 and 07 series of amendments to Regulation No. 83 to Selective Catalytic Reduction (SCR) warning and inducement systems to current vehicles, emissions requirements and reagent infrastructure. In light of further vehicle weight reduction for CO2 optimization and the resultant vehicle packaging challenges, diesel cars will likely have smaller AdBlue® reagent tanks. For passenger cars, the warning indicator to refill AdBlue® has to be activated at 2,400 km of remaining reagent range which could result in very frequent refills of smaller reagent tanks. This proposal would allow for reagent refill inducement warnings as a percentage of tank capacity. For heavy-duty vehicles, the warning has to be activated at least at a reagent level of 10 per cent of total reagent tank volume. The inducement system has to be activated at least at 2.5 per cent of reagent level. GRPE/2017/0005
GRPE/2017/6
Proposal for a new Supplement to the 06 series of amendments to Regulation No. 49 (OICA)
27 Oct 2016 Working Party Formal Documents Diesel and CNG/LNG Engine Emissions Diesel/CNG/LNG Engine Emissions Uniform provisions concerning the measures to be taken against the emission of gaseous and particulate pollutants from compression-ignition engines and positive ignition engines for use in vehicles Proposal to introduce provisions to align UN R49 with recently introduced stage D EU legislation in order enable manufacturers to continue to utilize the provisions in paragraph 4 of Annex 9A to approve light commercial vehicles with a light duty OBD architecture under this regulation. This proposal incorporates all of the provisions of the latest amendment to EU legislation. As stage D is unrelated to OBD, the proposal is to make stage C and all subsequent stages equivalent to EOBD 6-2. GRPE/2017/0006
GRPE/2017/7
Proposal for Amendment 2 to global technical regulation No. 15
30 Oct 2016 Working Party Formal Documents Worldwide Harmonized Light Vehicle Emissions Test Procedure WLTP Worldwide Harmonized Light Vehicles Test Procedure Amended Phase 2a Worldwide Light vehicles emissions Test Procedure (WLTP). Versions of the amended GTR highlighting the changes to the original regulation are available in <a href="http://www.unece.org/fileadmin/DAM/trans/doc/2016/wp29grpe/ECE-TRANS-WP29-GRPE-2017-07e__Track_changes_.docx">word format</a> and <a href="http://www.unece.org/fileadmin/DAM/trans/doc/2016/wp29grpe/ECE-TRANS-WP29-GRPE-2017-07e__Track_changes_.pdf">pdf format</a>. The amendments address:<ol class="alpha"><li>If an alternative value is applied for a parameter, such as a higher n_min_drive or an ASM, this parameter value has to be the same within an interpolation family (Paragraph 5.6.1.).</li><li>The mass in running order used for the calculation of the power to mass ratio is replaced by mass in running order minus 75 kg (paragraph 1. of Annex 1).</li><li>Idle engine speed n_idle is removed from the power curve measurement requirement (paragraph 2. of Annex 2).</li><li>The additional safety margin (ASM) value may be decided by manufacturer rather than the prescribed exponential curve (paragraph 3.4. of Annex 4).</li><li>The number of decimal place of road load coefficients is defined (paragraph 2.4. of Annex 4).</li><li>Additional restrictions are set to the application of the split run method for coastdown testing (paragraph 4.3.1.3.4. of Annex 4).</li><li>Specific data rejection criteria are added (paragraph 4.3.1.4.3. of Annex 4).</li><li>The “delta method” for road load determination is added (paragraph 6.8. of Annex 4 and other paragraphs. See section 4.4.25.for more detail).</li><li>The roller radius correction factor is modified(paragraph 6.6.3. of Annex 4).</li><li>The allowable combination of the test vehicle selection and family requirements are further clarified (paragraph 4.2.1.3. of Annex 4 and other paragraphs of Annex 4).</li><li>Provisions for an additional cooling fan are included(paragraph 1.1.5. and 1.1.6. of Annex 5).</li><li>The correction of measurement/recording frequency requirements are specified (over several annexes).</li><li>Calculation of the n/v ratio is defined (paragraph 8. of Annex 7).</li><li>The stepwise procedure for calculating the final test results of OVC-HEVs is added (paragraph 4.6. of Annex 8).</li></ol> GRPE/2017/0007