EMISSIONS DATA REQUIRED AT TYPE-APPROVAL FOR ROADWORTHINESS PURPOSESMeasuring carbon monoxide emissions at idling speeds
1.INTRODUCTION
1.1.This Annex sets out the procedure for measuring carbon monoxide emissions at idling speeds (normal and high) for positive-ignition engines fuelled with petrol or ethanol (E85) or positive-ignition engines fuelled with NG/Biomethane or LPG installed in M2, N1 or M1 vehicles with a maximum permissible mass not exceeding 7,5 tonnes.
2.GENERAL REQUIREMENTS
2.1.The general requirements shall be those set out in Sections 5.3.7.1 to 5.3.7.4 of UN/ECE Regulation No 83, with the exceptions set out in Sections 2.2, 2.3 and 2.4.
2.2.The atomic ratios set out in Section 5.3.7.3 shall be understood as follows:
Hcv
=
Atomic ratio of hydrogen to carbon
for petrol (E10) 1,93
for LPG 2,525
for NG/biomethane 4,0
for ethanol (E85) 2,74
Ocv
=
Atomic ratio of oxygen to carbon
for petrol (E10) 0,032
for LPG 0,0
for NG/biomethane 0,0
for ethanol (E85) 0,385
2.3.The table in point 1.4.3 of Appendix 5 to Annex I to this Regulation shall be completed on the basis of the requirements set out in points 2.2 and 2.4 of this Annex.
2.4.The manufacturer shall confirm the accuracy of the Lambda value recorded at the time of type-approval in point 2.1 of this Annex as being representative of typical production vehicles within 24 months of the date of the granting of type-approval. An assessment shall be made on the basis of surveys and studies of production vehicles.
3.TECHNICAL REQUIREMENTS
3.1.The technical requirements shall be those set out in Annex 5 to UN/ECE Regulation No 83, with the exception set out in point 3.2.
3.2.The reference fuels specified in Section 2.1 of Annex 5 to UN/ECE Regulation No 83 shall be understood as referring to the appropriate reference fuel specifications set out in Annex IX to this Regulation.