GAR | WP.29/2018/47

UN R49: Proposal for Supplement 6 to the 06 series of amendments

Document WP.29/2018/47

5 April 2018

175th WP.29 session (18-22 Jun 2018)

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:

Demonstrate that both fuels comply because the ODB system is able to detect the fuel used, or
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.

Status: Adopted

Download document

Previous Documents, Discussions, and Outcomes

175th WP.29 session (18-22 Jun 2018)

4.7.1. | Proposal for Supplement 10 to the 05 series of amendments to UN Regulation No. 49 (Compression ignition and positive ignition (LPG and CNG) engines))

4.7.2. | Proposal for Supplement 6 to the 06 series of amendments to UN Regulation No. 49 (Compression ignition and positive ignition (LPG and CNG) engines))

76th GRPE session (9-12 Jan 2018)

4. (a) | Heavy duty vehicles: Regulations Nos. 49 and 132

23. The expert from OICA also presented ECE/TRANS/WP.29/GRPE/2018/10 with requirements on Engine Control Unit torque signal validation, random check and rounding of test results. The expert from EC proposed clarifications (GRPE-76-16). GRPE adopted the proposal as amended and reproduced in Annex VI and requested the secretariat to submit it to WP.29 and AC.1 for consideration and vote at their June 2018 sessions as draft Supplement 6 to the 06 of amendments to UN Regulation No. 49.

Reference Number:	SIGTP-06-10/Rev.2
Submitted by:	EC
Meeting Session(s):	6th SIGTP session (19 Nov)
Document date:	22 Nov 24
Regarding:	UN R100 Electric Powertrain Vehicles

Reference Number:	SIGTP-06-14/Rev.2
Meeting Session(s):	6th SIGTP session (19 Nov)
Document date:	22 Nov 24
Regarding:	UN R100 Electric Powertrain Vehicles

Reference Number:	SIGTP-06-13/Rev.1
Meeting Session(s):	6th SIGTP session (19 Nov)
Document date:	22 Nov 24
Regarding:	UN R100 Electric Powertrain Vehicles

Reference Number:	DDADWS-02-05
Meeting Session(s):	2nd DDADWS session (19 Nov)
Document date:	22 Nov 24
Regarding:	ADDWS \| DDAWS

How Do You Want Call Up the List of Documents?

AC.3 Select Year

GRB Select Year

GRBP Select Year

GRE Select Year

GRPE Select Year

GRRF Select Year

GRSG Select Year

GRSP Select Year

GRVA Select Year

WP.29 Select Year

Documents concerning UN R49 Diesel/CNG/LNG Engine Emissions

AC.3

Select Year

GRB

Select Year

GRBP

Select Year

GRE

Select Year

GRPE

Select Year

GRRF

Select Year

GRSG

Select Year

GRSP

Select Year

GRVA

Select Year

WP.29

Select Year