Proposal to improve the Engine Control Unit (ECU) torque signal validation requirement in the 06 series of amendments to R49 with regard to dual-fuel or flex-fuel vehicles. Under the regulation, the ECU torque information can be calibrated only to one fuel’s heat value (usually the basic reference fuel) even though the heat value of the alternative fuel is different. In order to increase the accuracy of the torque values used for calculating the emission results during in-service conformity testing, OICA proposes to change the provisions to either:

1. Demonstrate that both fuels comply because the ODB system is able to detect the fuel used, or
2. Determine the torque deviation caused by the alternative fuel heat value compared to the standard fuel and apply this correction factor to calculate a more accurate power signal for the emission calculation.

Proposal to improve the “random check requirement” and define the rounding of test results calculated according to Annex 4A in the 05 series of amendments.

Proposal to correct and clarify the text, including to

1. correct the constants for equation (34) to calculate exhaust mass flow using carbon balance method,
2. correct constants used for CVS verification,
3. correct the formula for regression analysis according to Annex 4, Appendix 3, and
4. 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.

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. The proposal corrects

1. the constants for equation (34) to calculate exhaust mass flow using carbon balance method,
2. the constants used for CVS verification,
3. the formula for regression analysis according to Annex 4, Appendix 3, and
4. 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.

Amendments as approved by the GRPE for submission to the World Forum for adoption.

Information on Swiss detection of significant deactivation of Ad Blue diesel emissions reduction systems on EURO V vehicles (no EURO VI manipulated vehicles have been found to date).

Amendments from OICA to the 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.

OICA proposal to include the alignment of the amendment of EU Euro VI legislation (Reg. EU 2014/133) into the Regulation No. 49 which has not been covered before. Reg. EU 2014/133 corrects applicability of OBD threshold levels (OTLs) to all types of vehicles covered by the regulation by removing the reference to vehicle classes and weights.

Swiss report on circumvention of pollution-control systems through the use of aftermarket AdBlue emulators that stop AdBlue injection while preventing detection of the failure by the engine management system.

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”.

Proposal to correct and clarify the text, including to

1. correct the constants for equation (34) to calculate exhaust mass flow using carbon balance method,
2. correct constants used for CVS verification,
3. correct the formula for regression analysis according to Annex 4, Appendix 3, and
4. 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.

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

1. OBD equivalency option for light commercial vehicles to be continued with step ‘D’,
2. editorial corrections (incl. keeping optional THC PEMS measurement for gas engines),
3. implementation dates in Appendix 9 table 1 (2016/1718) and Annex 3 table 1 (R49),
4. implement rejection note for retroactive applicability with regard to in-service conformity (paragraph 13.4.),
clarification of type approval provisions for ‘new vehicle types as of 2017’,
5. 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.
6. 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).