UN R83 change reports — Emissions of M1 and N1 vehicles

New paragraph 9.7. and new Annex 14 add in-service conformity checks of system power, and these checks are optional.

This Regulation now applies to vehicles of categories M1 and N1. Annexes 7 and 9, which were “Reserved”, now cover manipulation devices and manipulation strategies, and anti-tampering, security and cybersecurity.

For vehicles of categories X and Y, the mass in Annex 1, paragraph 2.6. must not include the mass of the driver.

References to the UN Regulation on RDE now give its number, 168, instead of “[xxx]” or a similar mark.

In Table 1 of Appendix 5 to Annex 4, the marks “[3]” and “[4]” are deleted from the file format and file name lines.

Paragraphs 12.2.1. to 12.2.3. now refer to requirements for character EA, EB or EC in Table A3/1, without a list of items (a) to (e).

The scope now covers idling emissions (Type 2 test), crankcase emissions (Type 3 test) and exhaust emissions at low ambient temperature (Type 6 test).

At the manufacturer's request, type approval may now be granted to M1, M2, N1 and N2 vehicles with a reference mass not exceeding 2,840 kg. These vehicles must meet the conditions laid down in this Regulation.

Paragraphs 7.2.2., 7.2.4. and 7.3.2. of Annex 7 now give pressure values in kPa instead of mm of H2O. Under paragraph 7.3.5., the pressure of the fuel system must now drop to less than 2.5 kPa above ambient pressure within one minute.

For tests according to this Regulation after “[xx-xx-20xx]”, new paragraph 3.2.8. requires the rear position lamp setting that applies at ambient light above 7,000 lux.

Under paragraph 9.3.5.1., the number of sample lots now depends on “the annual production volume of an in-service family intended for sales in the contracting parties that apply this Regulation”. Before, it depended on the annual sales volume in the territories of a regional organization.

In Annex 4a, paragraph 5.1. has a new item (b) on simulation of other vehicle configurations with same body shape or same transmission. It applies where a vehicle road load has already been determined according to Appendix 7a. The condition is that the Type Approval Authority approves the simulation methodology proposed by the manufacturer.

For paragraph 6.2. of Appendix 6, the situations are now presumed to occur if the applicable NOx OBD threshold limit in Annex 11 is exceeded.

Test and measurement equipment compliant with the technical requirements of UN GTR No. 15 may now follow that UN GTR's maintenance and calibration requirements.

New Appendix 7b to Annex 4a gives a road load power calculation method. The manufacturer may choose it when the vehicle road load has been determined according to WLTP procedures as defined in UN GTR No. 15.

Annex 7 and its Appendix 1 now allow an alternative equation for variable volume enclosures, at the choice of the manufacturer.

The reagent warning system may now activate, at the choice of the manufacturer, at the latest at one of two reagent levels, whichever occurs earlier.

For category N vehicles, the approval must be extended to vehicles with a lower reference mass, only if one condition is met. Condition: the emissions of the vehicle already approved are within the limits prescribed for the vehicle for which extension of the approval is requested.

At the manufacturer's request, type approval may be granted to M1, M2, N1 and N2 vehicles with reference mass ≤ 2,840 kg that meet this Regulation. Before, the text allowed the extension of a type approval to these vehicles.

In Annex 7, paragraphs 7.2.2. and 7.3.2. now give the pressure in kPa: 3.70 kPa ± 0.10 kPa instead of 370 ±10 mm of H2O.

In new paragraph 3.2.7. of Annex 4A, the test vehicle must have the group's daytime running lamp system with the highest electrical energy consumption. The daytime running lamps as defined in paragraph 2. of Regulation No. 48 must be switched ON during the test cycle.

Under paragraph 9.3.5.1., the number of sample lots now depends on “the annual production volume of an in-service family intended for sales in the contracting parties that apply this Regulation”. Before, it depended on the annual sales volume in the territories of a regional organization.

In Annex 4a, paragraph 5.1. has a new item (b) on simulation of other vehicle configurations with same body shape or same transmission. It applies where a vehicle road load has already been determined according to Appendix 7a. The condition is that the Type Approval Authority approves the simulation methodology proposed by the manufacturer.

In Annex 4a, Appendix 7b, the formula for the effect of different tyre tread depth now subtracts TTD instead of multiplying by it.

Annex 4A, Appendix 3, paragraph 2. now has a new opening sentence. For test and measurement equipment compliant with the technical requirements of UN GTR No. 15, that UN GTR's maintenance and calibration requirements may be followed.

New Appendix 7b to Annex 4a gives a road load power calculation method. The manufacturer may choose it when the vehicle road load has been determined according to WLTP procedures as defined in UN GTR No. 15.

Annex 7 and its Appendix 1 now allow an alternative equation for variable volume enclosures, at the choice of the manufacturer.

New paragraph 14. gives alternative procedures for periodical regenerating systems, the Type V test, the Type VI test and the OBD test.

For category N vehicles, the approval must be extended to vehicles with a lower reference mass, only if one condition is met. Condition: the emissions of the vehicle already approved are within the limits prescribed for the vehicle for which extension of the approval is requested.