Proposal for Supplement 6 to the 06 series of amendments to UN Regulation No. 49 (Compression ignition and positive ignition (LPG and CNG) engines))
Documentation
WP.29/2018/46
UN R49: Proposal for Supplement 10 to the 05 series of amendments
UN R49: Proposal for Supplement 10 to the 05 series of amendments
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.
This proposal (WP.29/2018/46) was adopted by the World Forum. Thirty-three Contracting Parties out of the 45 applying UN R49 were present for the vote by AC.1. Thirty-three voted in favor with zero against and zero abstaining.
WP.29/2018/47
UN R49: Proposal for Supplement 6 to the 06 series of amendments
UN R49: Proposal for Supplement 6 to the 06 series of amendments
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.
This proposal (WP.29/2018/47) was adopted by the World Forum. Thirty-three Contracting Parties out of the 45 applying UN R49 were present for the vote by AC.1. Thirty-three voted in favor with zero against and zero abstaining.