ANNEX IVEMISSIONS DATA REQUIRED AT TYPE-APPROVAL FOR ROADWORTHINESS PURPOSES

Measuring carbon monoxide emissions at idling speeds

1.INTRODUCTION

F11.1.

This Annex sets out the procedure for measuring carbon monoxide emissions at idling speeds (normal and high) for positive ignition engines installed in vehicles of category M1 with a technically permissible maximum laden mass not exceeding 7,5 tonnes, as well as in vehicles of categories M2 and N1.

F21.2.

This Annex does not apply to dual-fuel engines and vehicles.

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.