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UN R49 Supplement 6 (06 series) · UNECE Regulation No. 49 (ECE R49) — Uniform provisions concerning the measures to be taken against the emission of gaseous and particulate pollutants from compression-ignition engines and positive ignition engines for use in vehicles.

UN R49 — Supplement 6 to the 06 series of amendments

Supplement 5 → 6

Adopted at the WP.29 175th sessionEntry into force 2018-12-29
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What changed
  • Declared market fuels now need a power correction factor if measured and calculated torque differ by more than a value in paragraph 9.4.2.5.
  • For tests with a declared market fuel and a documented power correction factor, the specific emissions of each window and pollutant are multiplied by it.
  • The 10 per cent load tolerance for the WHSC in paragraph 9.4.2.5. now excludes modes 1 and 13 (idle modes).
Why
  • According to the proposal, the present provisions force manufacturers to deliberately decrease the accuracy of the torque signal for additionally declared market fuels.
  • Using the factor, ECU power from PEMS tests with an alternative fuel can be converted to a correct and true power signal for emission calculation.

Q1What changed19 changes

Power correction factor for declared market fuels (paras. 4.6.2., 9.4.2.7. and 9.4.2.8.)

For market fuels under paragraph 4.6.2., a new item (b) requires the manufacturer to determine the power correction factor for each declared fuel, if applicable. The manufacturer must declare the factor for each fuel in item 3.2.2.2.2. of the information document, if applicable. Under new paragraph 9.4.2.7., paragraph 9.4.2.8. applies when the difference between two torque values exceeds one of the values in paragraph 9.4.2.5. These are the measured torque with a declared market fuel according to paragraph 4.2.6. and the torque calculated from the information requested in paragraph 9.4.2.1. New paragraph 9.4.2.8. requires a power correction factor for each additional market fuel permitted by the manufacturer, determined for the engine family. The factor is the ratio between the average measured peak torque on the reference fuel of Annex 5 and that on the declared market fuel.

Determine the power correction factor for each fuel declared according to paragraph 9.4.2.8. if applicable according to the provisions specified in paragraph 9.4.2.7. Declare the factor for each fuel in 3.2.2.2.2. of the information document as set out in Part 1 of Annex 1, if applicable;
(b)(c)
3 more changes in this group — open in Compare

Information document items 3.2.2.2. and 3.2.2.2.2.

The information document in Part 1 of Annex 1 has a new item 3.2.2.2.2., “Power correction factor according to paragraph 9.4.2.8. for each fuel declared (if applicable)”. Item 3.2.2.2. no longer lists LNG and LNG20 after Ethanol (E85).

| | | Parent engine or engine type | Engine family members | | | | | | | | | | A | B | | C | D | | E 3.2.1.11. | Manufacturer references of the documentation package required by paragraphs 3.1., 3.2. and 3.3. of this Regulation enabling the Type Approval Authority to evaluate the emission control strategies and the systems on-board the engine to ensure the correct operation of NOx control measures | | | | | | | | | 3.2.2. | Fuel | | | | | | | | | 3.2.2.2. | Heavy duty vehicles Diesel/Petrol/LPG/NG-H/NG-L/NG-HL/Ethanol (ED95)/ Ethanol (E85)/LNG/LNG201,15 E85)1 | | | | | | | | | 3.2.2.2.1. | Fuels compatible with use by the engine declared by the manufacturer in accordance with paragraph 4.6.2. of this Regulation (as applicable) | | | | | | | | | 3.2.2.2.2. | Power correction factor according to paragraph 9.4.2.8. for each fuel declared (if applicable) | | | | | | | | | 3.2.4. | Fuel feed | | | | | | | | | 3.2.4.2. | By fuel injection (only compression ignition or dual-fuel): yes/no1 | | | | | | | | | 3.2.4.2.1. | System description | | | | | | | | | 3.2.4.2.2. | Working principle: direct injection/pre-chamber/swirl chamber1 | | | | | | | | | 3.2.4.2.3. | Injection pump | | | | | | | | | 3.2.4.2.3.1. | Make(s) | | | | | | | | | 3.2.4.2.3.2. | Type(s) | | | | | | | | | 3.2.4.2.3.3. | Maximum fuel delivery1,5 …... mm3 /stroke or cycle at an engine speed of …… min-1 or, alternatively, a characteristic diagram (When boost control is supplied, state the characteristic fuel delivery and boost pressure versus engine speed) | | | | | | | | | 3.2.4.2.3.4. | Static injection timing5 | | | | | | | | | 3.2.4.2.3.5. | Injection advance curve5 | | | | | | | | | 3.2.4.2.3.6. | Calibration procedure: test bench/engine1 | | | | | | | | | 3.2.4.2.4. | Governor | | | | | | | | | 3.2.4.2.4.1. | Type | | | | | | | | | 3.2.4.2.4.2. | Cut-off point | | | | | | | | | 3.2.4.2.4.2.1. | Speed at which cut-off starts under load (min-1) | | | | | | | | | 3.2.4.2.4.2.2. | Maximum no-load speed (min-1) | | | | | | | | | 3.2.4.2.4.2.3. | Idling speed (min-1) | | | | | | | | | 3.2.4.2.5. | Injection piping | | | | | | | | | 3.2.4.2.5.1. | Length (mm) | | | | | | | | | 3.2.4.2.5.2. | Internal diameter (mm) | | | | | | | | | 3.2.4.2.5.3. | Common rail, make and type | | | | | | | | | 3.2.4.2.6. | Injector(s) | | | | | | | | | 3.2.4.2.6.1. | Make(s) | | | | | | | | | 3.2.4.2.6.2. | Type(s) | | | | | | | | | 3.2.4.2.6.3. | Opening pressure5: kPa or characteristic diagram5 | | | | | | | | | 3.2.4.2.7. | Cold start system | | | | | | | | | 3.2.4.2.7.1. | Make(s) | | | | | | | | | 3.2.4.2.7.2. | Type(s) | | | | | | | | | 3.2.4.2.7.3. | Description | | | | | | | | | 3.2.4.2.8. | Auxiliary starting aid | | | | | | | | | 3.2.4.2.8.1. | Make(s) | | | | | | | | | 3.2.4.2.8.2. | Type(s) | | | | | | | | | 3.2.4.2.8.3. | System description | | | | | | | | | 3.2.4.2.9. | Electronic controlled injection: Yes/No1 | | | | | | | | | 3.2.4.2.9.1. | Make(s) | | | | | | | | | 3.2.4.2.9.2. | Type(s) | | | | | | | | | 3.2.4.2.9.3. | Description of the system (in the case of systems other than continuous injection give equivalent details) | | | | | | | | | 3.2.4.2.9.3.1. | Make and type of the control unit (ECU) | | | | | | | | | 3.2.4.2.9.3.2. | Make and type of the fuel regulator | | | | | | | | | 3.2.4.2.9.3.3. | Make and type of the air-flow sensor | | | | | | | | | 3.2.4.2.9.3.4. | Make and type of fuel distributor | | | | | | | | | 3.2.4.2.9.3.5. | Make and type of the throttle housing | | | | | | | | | 3.2.4.2.9.3.6. | Make and type of water temperature sensor | | | | | | | | | 3.2.4.2.9.3.7. | Make and type of air temperature sensor | | | | | | | | | 3.2.4.2.9.3.8. | Make and type of air pressure sensor | | | | | | | | | 3.2.4.2.9.3.9. | Software calibration number(s) | | | | | | | | | 3.2.4.3. | By fuel injection (positive ignition only): Yes/No1 | | | | | | | | | 3.2.4.3.1. | Working principle: intake manifold (single-/multi-point/direct injection1/other specify) | | | | | | | | | 3.2.4.3.2. | Make(s) | | | | | | | | | 3.2.4.3.3. | Type(s) | | | | | | | | | 3.2.4.3.4. | System description (In the case of systems other than continuous injection give equivalent details) | | | | | | | | | 3.2.4.3.4.1. | Make and type of the control unit (ECU) | | | | | | | | | 3.2.4.3.4.2. | Make and type of fuel regulator | | | | | | | | | 3.2.4.3.4.3. | Make and type of air-flow sensor | | | | | | | | | 3.2.4.3.4.4. | Make and type of fuel distributor | | | | | | | | | 3.2.4.3.4.5. | Make and type of pressure regulator | | | | | | | | | 3.2.4.3.4.6. | Make and type of micro switch | | | | | | | | | 3.2.4.3.4.7. | Make and type of idling adjustment screw | | | | | | | | | 3.2.4.3.4.8. | Make and type of throttle housing | | | | | | | | | 3.2.4.3.4.9. | Make and type of water temperature sensor | | | | | | | | | 3.2.4.3.4.10. | Make and type of air temperature sensor | | | | | | | | | 3.2.4.3.4.11. | Make and type of air pressure sensor | | | | | | | | | 3.2.4.3.4.12. | Software calibration number(s) | | | | | | | | | 3.2.4.3.5. | Injectors: opening pressure5 (kPa) or characteristic diagram5 | | | | | | | | | 3.2.4.3.5.1. | Make | | | | | | | | | 3.2.4.3.5.2. | Type | | | | | | | | | 3.2.4.3.6. | Injection timing | | | | | | | | | 3.2.4.3.7. | Cold start system | | | | | | | | | 3.2.4.3.7.1. | Operating principle(s) | | | | | | | | | 3.2.4.3.7.2. | Operating limits/settings1,5 | | | | | | | | | 3.2.4.4. | Feed pump | | | | | | | | | 3.2.4.4.1. | Pressure5 (kPa) or characteristic diagram5 | | | | | | | | | 3.2.5. | Electrical system | | | | | | | | | 3.2.5.1. | Rated voltage (V), positive/negative ground (1) | | | | | | | | | 3.2.5.2. | Generator | | | | | | | | | 3.2.5.2.1. | Type | | | | | | | | | 3.2.5.2.2. | Nominal output (VA) | | | | | | | | | 3.2.6. | Ignition system (spark ignition engines only) | | | | | | | | | 3.2.6.1. | Make(s) | | | | | | | | | 3.2.6.2. | Type(s) | | | | | | | | | 3.2.6.3. | Working principle | | | | | | | | | 3.2.6.4. | Ignition advance curve or map5 | | | | | | | | | 3.2.6.5. | Static ignition timing5 (degrees before TDC) | | | | | | | | | 3.2.6.6. | Spark plugs | | | | | | | | | 3.2.6.6.1. | Make | | | | | | | | | 3.2.6.6.2. | Type | | | | | | | | | 3.2.6.6.3. | Gap setting (mm) | | | | | | | | | 3.2.6.7. | Ignition coil(s) | | | | | | | | | 3.2.6.7.1. | Make | | | | | | | | | 3.2.6.7.2. | Type | | | | | | | | | 3.2.7. | Cooling system: liquid/air1 | | | | | | | | | 3.2.7.2. | Liquid | | | | | | | | | 3.2.7.2.1. | Nature of liquid | | | | | | | | | 3.2.7.2.2. | Circulating pump(s): Yes/No1 | | | | | | | | | 3.2.7.2.3. | Characteristics | | | | | | | | | 3.2.7.2.3.1. | Make(s) | | | | | | | | | 3.2.7.2.3.2. | Type(s) | | | | | | | | | 3.2.7.2.4. | Drive ratio(s) | | | | | | | | | 3.2.7.3. | Air | | | | | | | | | 3.2.7.3.1. | Fan: Yes/No1 | | | | | | | | | 3.2.7.3.2. | Characteristics | | | | | | | | | 3.2.7.3.2.1. | Make(s) | | | | | | | | | 3.2.7.3.2.2. | Type(s) | | | | | | | | | 3.2.7.3.3. | Drive ratio(s) | | | | | | | | | 3.2.8. | Intake system | | | | | | | | | 3.2.8.1. | Pressure charger: Yes/No 1 | | | | | | | | | 3.2.8.1.1. | Make(s) | | | | | | | | | 3.2.8.1.2. | Type(s) | | | | | | | | | 3.2.8.1.3. | Description of the system (e.g. maximum charge pressure …... kPa, wastegate, if applicable) | | | | | | | | | 3.2.8.2. | Intercooler: Yes/No1 | | | | | | | | | 3.2.8.2.1. | Type: air-air/air-water1 | | | | | | | | | 3.2.8.3. | Intake depression at rated engine speed and at 100 % load (compression ignition engines only) | | | | | | | | | 3.2.8.3.1. | Minimum allowable (kPa) | | | | | | | | | 3.2.8.3.2. | Maximum allowable (kPa) | | | | | | | | | 3.2.8.4. | Description and drawings of inlet pipes and their accessories (plenum chamber, heating device, additional air intakes, etc.) | | | | | | | | | 3.2.8.4.1. | Intake manifold description (include drawings and/or photos) | | | | | | | | | 3.2.9. | Exhaust system | | | | | | | | | 3.2.9.1. | Description and/or drawings of the exhaust manifold | | | | | | | | | 3.2.9.2. | Description and/or drawing of the exhaust system | | | | | | | | | 3.2.9.2.1. | Description and/or drawing of the elements of the exhaust system that are part of the engine system | | | | | | | | | 3.2.9.3. | Maximum allowable exhaust back pressure at rated engine speed and at 100 % load (compression ignition engines only)(kPa)7 | | | | | | | | | 3.2.9.7. | Exhaust system volume (dm³) | | | | | | | | | 3.2.9.7.1. | Acceptable exhaust system volume (vehicle and engine system): (dm³) | | | | | | | | | 3.2.9.7.2. | Volume of the exhaust system that is part of the engine system: …………………………dm3 | | | | | | | | | 3.2.10. | Minimum cross-sectional areas of inlet and outlet ports | | | | | | | | | 3.2.11. | Valve timing or equivalent data | | | | | | | | | 3.2.11.1. | Maximum lift of valves, angles of opening and closing, or timing details of alternative distribution systems, in relation to dead centers. For variable timing system, minimum and maximum timing | | | | | | | | | 3.2.11.2. | Reference and/or setting range7 | | | | | | | | | 3.2.12. | Measures taken against air pollution | | | | | | | | | 3.2.12.1.1. | Device for recycling crankcase gases: Yes/No 1 If yes, description and drawings If no, compliance with paragraph 6.10. of Annex 4 of this Regulation required | | | | | | | | | 3.2.12.2. | Additional pollution control devices (if any, and if not covered by another heading) | | | | | | | | | 3.2.12.2.1. | Catalytic converter: Yes/No1 | | | | | | | | | 3.2.12.2.1.1. | Number of catalytic converters and elements (provide this information below for each separate unit) | | | | | | | | | 3.2.12.2.1.2. | Dimensions, shape and volume of the catalytic converter(s) | | | | | | | | | 3.2.12.2.1.3. | Type of catalytic action | | | | | | | | | 3.2.12.2.1.4. | Total charge of precious metals | | | | | | | | | 3.2.12.2.1.5. | Relative concentration | | | | | | | | | 3.2.12.2.1.6. | Substrate (structure and material) | | | | | | | | | 3.2.12.2.1.7. | Cell density | | | | | | | | | 3.2.12.2.1.8. | Type of casing for the catalytic converter(s) | | | | | | | | | 3.2.12.2.1.9. | Location of the catalytic converter(s) (place and reference distance in the exhaust line) | | | | | | | | | 3.2.12.2.1.10. | Heat shield: Yes/No1 | | | | | | | | | 3.2.12.2.1.11. | Regeneration systems/method of exhaust after treatment systems, description | | | | | | | | | 3.2.12.2.1.11.5. | Normal operating temperature range (K) | | | | | | | | | 3.2.12.2.1.11.6. | Consumable reagents: Yes/No1 | | | | | | | | | 3.2.12.2.1.11.7. | Type and concentration of reagent needed for catalytic action | | | | | | | | | 3.2.12.2.1.11.8. | Normal operational temperature range of reagent K | | | | | | | | | 3.2.12.2.1.11.9. | International standard | | | | | | | | | 3.2.12.2.1.11.10. | Frequency of reagent refill: continuous/maintenance1 | | | | | | | | | 3.2.12.2.1.12. | Make of catalytic converter | | | | | | | | | 3.2.12.2.1.13. | Identifying part number | | | | | | | | | 3.2.12.2.2. | Oxygen sensor: Yes/No1 | | | | | | | | | 3.2.12.2.2.1. | Make | | | | | | | | | 3.2.12.2.2.2. | Location | | | | | | | | | 3.2.12.2.2.3. | Control range | | | | | | | | | 3.2.12.2.2.4. | Type | | | | | | | | | 3.2.12.2.2.5. | Indentifying part number | | | | | | | | | 3.2.12.2.3. | Air injection: Yes/No1 | | | | | | | | | 3.2.12.2.3.1. | Type (pulse air, air pump, etc.) | | | | | | | | | 3.2.12.2.4. | Exhaust gas recirculation (EGR): Yes/No1 | | | | | | | | | 3.2.12.2.4.1. | Characteristics (make, type, flow, etc) | | | | | | | | | 3.2.12.2.6. | Particulate trap (PT): Yes/No1 | | | | | | | | | 3.2.12.2.6.1. | Dimensions, shape and capacity of the particulate trap | | | | | | | | | 3.2.12.2.6.2. | Design of the particulate trap | | | | | | | | | 3.2.12.2.6.3. | Location (reference distance in the exhaust line) | | | | | | | | | 3.2.12.2.6.4. | Method or system of regeneration, description and/or drawing | | | | | | | | | 3.2.12.2.6.5. | Make of particulate trap | | | | | | | | | 3.2.12.2.6.6. | Indentifying part number | | | | | | | | | 3.2.12.2.6.7. | Normal operating temperature (K) and pressure (kPa) ranges | | | | | | | | | 3.2.12.2.6.8. | In the case of periodic regeneration | | | | | | | | | 3.2.12.2.6.8.1.1. | Number of WHTC test cycles without regeneration (n) | | | | | | | | | 3.2.12.2.6.8.2.1. | Number of WHTC test cycles with regeneration (nR) | | | | | | | | | 3.2.12.2.6.9. | Other systems: Yes/No1 | | | | | | | | | 3.2.12.2.6.9.1. | Description and operation | | | | | | | | | 3.2.12.2.7. | On-board-diagnostic (OBD) system | | | | | | | | | 3.2.12.2.7.0.1. | Number of OBD engine families within the engine family | | | | | | | | | 3.2.12.2.7.0.2. | List of the OBD engine families (when applicable) | | OBD engine family 1: …………. | | | | | | | | | | OBD engine family 2: …………. | | | | | | | | | | etc… | | | | | | | 3.2.12.2.7.0.3. | Number of the OBD engine family the parent engine / the engine member belongs to | | | | | | | | | 3.2.12.2.7.0.4. | Manufacturer references of the OBD-Documentation required by paragraph 3.1.4. (c) and paragraph 3.3.4. of this Regulation and specified in Annex 9A of this Regulation for the purpose of approving the OBD system | | | | | | | | | 3.2.12.2.7.0.5. | When appropriate, manufacturer reference of the Documentation for installing in a vehicle an OBD equipped engine system | | | | | | | | | 3.2.12.2.7.2. | List and purpose of all components monitored by the OBD system8 | | | | | | | | | 3.2.12.2.7.3. | Written description (general working principles) for | | | | | | | | | 3.2.12.2.7.3.1. | Positive-ignition engines8 | | | | | | | | | 3.2.12.2.7.3.1.1. | Catalyst monitoring8 | | | | | | | | | 3.2.12.2.7.3.1.2. | Misfire detection8 | | | | | | | | | 3.2.12.2.7.3.1.3. | Oxygen sensor monitoring8 | | | | | | | | | 3.2.12.2.7.3.1.4. | Other components monitored by the OBD system | | | | | | | | | 3.2.12.2.7.3.2. | Compression-ignition engines8 | | | | | | | | | 3.2.12.2.7.3.2.1. | Catalyst monitoring8 | | | | | | | | | 3.2.12.2.7.3.2.2. | Particulate trap monitoring8 | | | | | | | | | 3.2.12.2.7.3.2.3. | Electronic fuelling system monitoring8 | | | | | | | | | 3.2.12.2.7.3.2.4. | DeNOx system monitoring8 | | | | | | | | | 3.2.12.2.7.3.2.5. | Other components monitored by the OBD system8 | | | | | | | | | 3.2.12.2.7.4. | Criteria for MI activation (fixed number of driving cycles or statistical method) 8 | | | | | | | | | 3.2.12.2.7.5. | List of all OBD output codes and formats used (with explanation of each) 8 | | | | | | | | | 3.2.12.2.7.6.5. | OBD Communication protocol standard8 | | | | | | | | | 3.2.12.2.7.7. | Manufacturer reference of the OBD related information required by of paragraphs 3.1.4. (d) and 3.3.4. this Regulation for the purpose of complying with the provisions on access to vehicle OBD, or | | | | | | | | | 3.2.12.2.7.7.1. | As an alternative to a manufacturer reference provided in paragraph 3.2.12.2.7.7. reference of the attachment to this annex that contains the following table, once completed according to the given example: Component - Fault code - Monitoring strategy - Fault detection criteria - MI activation criteria - Secondary parameters – Preconditioning - Demonstration test SCR Catalyst - P20EE - NOx sensor 1 and 2 signals - Difference between sensor 1 and sensor 2 signals - 2nd cycle - Engine speed, engine load, catalyst temperature, reagent activity, exhaust mass flow - One OBD test cycle (WHTC, hot part) - OBD test cycle (WHTC, hot part) | | | | | | | | | 3.2.12.2.8. | Other system (description and operation) | | | | | | | | | 3.2.12.2.8.1. | Systems to ensure the correct operation of NOx control measures | | | | | | | | | 3.2.12.2.8.2. | Driver inducement system | | | | | | | | | 3.2.12.2.8.2.1. | Engine with permanent deactivation of the driver inducement, for use by the rescue services or in vehicles designed and constructed for use by the armed services, civil defence, fire services and forces responsible for maintaining public order: Yes/No1 | | | | | | | | | 3.2.12.2.8.2.2. | Activation of the creep mode 'disable after restart'/'disable after fuelling'/'disable after parking'1,7 | | | | | | | | | 3.2.12.2.8.3. | Number of OBD engine families within the engine family considered when ensuring the correct operation of NOx control measures | | | | | | | | | 3.2.12.2.8.3.1. | List of the OBD engine families within the engine family considered when ensuring the correct operation of NOx control measures (when applicable) | | OBD engine family 1: …………. OBD engine family 2: …………. etc… | | | | | | | 3.2.12.2.8.3.2. | Reference number of the OBD engine family considered when ensuring the correct operation of NOX control measures the parent engine / the engine member belongs to | | | | | | | | | 3.2.12.2.8.7. | When appropriate, manufacturer reference of the Documentation for installing in a vehicle the systems to ensure the correct operation of NOx control measures | | | | | | | | | 3.2.12.2.8.8.5. | Heated/non-heated reagent tank and dosing system (see point 2.4 of Annex 11) | | | | | | | | | 3.2.17. | Specific information related to gas and dual fuel engines for heavy-duty vehicles (in the case of systems laid out in a different manner, supply equivalent information) (if applicable) | | | | | | | | | 3.2.17.1. | Fuel: LPG /NG-H/NG-L /NG-HL1 | | | | | | | | | 3.2.17.2. | Pressure regulator(s) or vaporiser/pressure regulator(s)1 | | | | | | | | | 3.2.17.2.1. | Make(s) | | | | | | | | | 3.2.17.2.2. | Type(s) | | | | | | | | | 3.2.17.2.3. | Number of pressure reduction stages | | | | | | | | | 3.2.17.2.4. | Pressure in final stage minimum (kPa) – maximum. (kPa) | | | | | | | | | 3.2.17.2.5. | Number of main adjustment points | | | | | | | | | 3.2.17.2.6. | Number of idle adjustment points | | | | | | | | | 3.2.17.2.7. | Type approval number | | | | | | | | | 3.2.17.3. | Fuelling system: mixing unit / gas injection / liquid injection / direct injection1 | | | | | | | | | 3.2.17.3.1. | Mixture strength regulation | | | | | | | | | 3.2.17.3.2. | System description and/or diagram and drawings | | | | | | | | | 3.2.17.3.3. | Type approval number | | | | | | | | | 3.2.17.4. | Mixing unit | | | | | | | | | 3.2.17.4.1. | Number | | | | | | | | | 3.2.17.4.2. | Make(s) | | | | | | | | | 3.2.17.4.3. | Type(s) | | | | | | | | | 3.2.17.4.4. | Location | | | | | | | | | 3.2.17.4.5. | Adjustment possibilities | | | | | | | | | 3.2.17.4.6. | Type approval number | | | | | | | | | 3.2.17.5. | Inlet manifold injection | | | | | | | | | 3.2.17.5.1. | Injection: single point/multipoint1 | | | | | | | | | 3.2.17.5.2. | Injection: continuous/simultaneously timed/sequentially timed1 | | | | | | | | | 3.2.17.5.3. | Injection equipment | | | | | | | | | 3.2.17.5.3.1. | Make(s) | | | | | | | | | 3.2.17.5.3.2. | Type(s) | | | | | | | | | 3.2.17.5.3.3. | Adjustment possibilities | | | | | | | | | 3.2.17.5.3.4. | Type approval number | | | | | | | | | 3.2.17.5.4. | Supply pump (if applicable) | | | | | | | | | 3.2.17.5.4.1. | Make(s) | | | | | | | | | 3.2.17.5.4.2. | Type(s) | | | | | | | | | 3.2.17.5.4.3. | Type approval number | | | | | | | | | 3.2.17.5.5. | Injector(s) | | | | | | | | | 3.2.17.5.5.1. | Make(s) | | | | | | | | | 3.2.17.5.5.2. | Type(s) | | | | | | | | | 3.2.17.5.5.3. | Type approval number | | | | | | | | | 3.2.17.6. | Direct injection | | | | | | | | | 3.2.17.6.1. | Injection pump/pressure regulator1 | | | | | | | | | 3.2.17.6.1.1. | Make(s) | | | | | | | | | 3.2.17.6.1.2. | Type(s) | | | | | | | | | 3.2.17.6.1.3. | Injection timing | | | | | | | | | 3.2.17.6.1.4. | Type approval number | | | | | | | | | 3.2.17.6.2. | Injector(s) | | | | | | | | | 3.2.17.6.2.1. | Make(s) | | | | | | | | | 3.2.17.6.2.2. | Type(s) | | | | | | | | | 3.2.17.6.2.3. | Opening pressure or characteristic diagram1 | | | | | | | | | 3.2.17.6.2.4. | Type approval number | | | | | | | | | 3.2.17.7. | Electronic control unit (ECU) | | | | | | | | | 3.2.17.7.1. | Make(s) | | | | | | | | | 3.2.17.7.2. | Type(s) | | | | | | | | | 3.2.17.7.3. | Adjustment possibilities | | | | | | | | | 3.2.17.7.4. | Software calibration number(s) | | | | | | | | | 3.2.17.8. | NG fuel-specific equipment | | | | | | | | | 3.2.17.8.1. | Variant 1 (only in the case of approvals of engines for several specific fuel compositions) | | | | | | | | | 3.2.17.8.1.0.1. | Self-adaptive feature? Yes/No1 | | | | | | | | | 3.2.17.8.1.0.2. | Calibration for a specific gas composition NG-H/NG-L/NG-HL1 Transformation for a specific gas composition NG-Ht/NG-Lt/NG-HLt 1 | | | | | | | | | 3.2.17.8.1.1. | methane (CH4) basis (%mole) min (%mole) max (%mole) ethane (C2H6) basis (%mole) min (%mole) max (%mole) propane (C3H8) basis (%mole) min (%mole) max (%mole) butane (C4H10) basis (%mole) min (%mole) max (%mole) C5/C5+: basis (%mole) min (%mole) max (%mole) oxygen (O2) basis (%mole) min (%mole) max (%mole) inert (N2, He etc) basis (%mole) min (%mole) max (%mole) | | | | | | | | | 3.2.17.9. | When appropriate, manufacturer reference of the documentation for installing the dual-fuel engine in a vehicle14 | | | | | | | | | 3.5.4. | CO2 emissions for heavy duty engines | | | | | | | | | 3.5.4.1. | CO2 mass emissions WHSC test16: ………………… (g/kWh) | | | | | | | | | 3.5.4.2. | CO2 mass emissions WHSC test in diesel mode17: …………………………g/kWh | | | | | | | | | 3.5.4.3. | CO2 mass emissions WHSC test in dual-fuel mode14 (if applicable): ………………………… g/kWh | | | | | | | | | 3.5.4.4. | CO2 mass emissions WHTC test16: ………………… (g/kWh) | | | | | | | | | 3.5.4.5. | CO2 mass emissions WHTC test in diesel mode17: ………………………… g/kWh | | | | | | | | | 3.5.4.6. | CO2 mass emissions WHTC test in dual-fuel mode14 ………………………… g/kWh | | | | | | | | | 3.5.5. | Fuel consumption for heavy duty engines | | | | | | | | | 3.5.5.1. | Fuel consumption WHSC test16: ………………… (g/kWh) | | | | | | | | | 3.5.5.2. | Fuel consumption WHSC test in diesel mode17: ………………………… g/kWh | | | | | | | | | 3.5.5.3. | Fuel consumption WHSC test in dual-fuel mode14: ………………………… g/kWh | | | | | | | | | 3.5.5.4. | Fuel consumption WHTC test5, 16: ………………… (g/kWh) | | | | | | | | | 3.5.5.5. | Fuel consumption WHTC test in diesel mode13: ………………………… g/kWh | | | | | | | | | 3.5.5.6. | Fuel consumption WHTC test in dual-fuel mode 14: ………………………… g/kWh | | | | | | | | | 3.6. | Temperatures permitted by the manufacturer | | | | | | | | | 3.6.1. | Cooling system | | | | | | | | | 3.6.1.1. | Liquid cooling Maximum temperature at outlet (K) | | | | | | | | | 3.6.1.2. | Air cooling | | | | | | | | | 3.6.1.2.1. | Reference point | | | | | | | | | 3.6.1.2.2. | Maximum temperature at reference point (K) | | | | | | | | | 3.6.2. | Maximum outlet temperature of the inlet intercooler (K) | | | | | | | | | 3.6.3. | Maximum exhaust temperature at the point in the exhaust pipe(s) adjacent to the outer flange(s) of the exhaust manifold(s) or turbocharger(s) (K) | | | | | | | | | 3.6.4. | Fuel temperature Minimum (K) – maximum (K) For diesel engines at injection pump inlet, for gas fuelled engines at pressure regulator final stage | | | | | | | | | 3.6.5. | Lubricant temperature Minimum (K) – maximum (K) | | | | | | | | | 3.8. | Lubrication system | | | | | | | | | 3.8.1. | Description of the system | | | | | | | | | 3.8.1.1. | Position of lubricant reservoir | | | | | | | | | 3.8.1.2. | Feed system (by pump/injection into intake/mixing with fuel, etc.)1 | | | | | | | | | 3.8.2. | Lubricating pump | | | | | | | | | 3.8.2.1. | Make(s) | | | | | | | | | 3.8.2.2. | Type(s) | | | | | | | | | 3.8.3. | Mixture with fuel | | | | | | | | | 3.8.3.1. | Percentage | | | | | | | | | 3.8.4. | Oil cooler: Yes/No1 | | | | | | | | | 3.8.4.1. | Drawing(s) | | | | | | | | | 3.8.4.1.1. | Make(s) | | | | | | | | | 3.8.4.1.2. | Type(s) | | | | | | | | |

ECU torque signal tolerances and conformity checks (paras. 9.4.2.5. to 9.4.3.3.1.)

In paragraph 9.4.2.5., the 10 per cent load tolerance for the WHSC now excludes modes 1 and 13 (idle modes). Three references to “Regulation No. 85” now read “UN Regulation No. 85”. Paragraph 9.4.3.1. now refers to an external OBD scan-tool as described in Annex X instead of Annex 9B. Paragraph 9.4.3.3. now refers to the general requirements specified in paragraph 9.4.2. instead of the requirements of paragraphs 9.4.2.2. and 9.4.2.3. It now refers to Annex XIV for the engine power and to Annex III for the WHSC test, and no longer to off-cycle laboratory testing. Paragraph 9.4.3.3.1. adds that, if applicable, the power correction factor for the engine family must be determined with the parent engine.

7 per cent when determining the engine power according to UN Regulation No. 85;
10 per cent when performing the World Harmonised Steady state Cycle (hereinafter "WHSC") test except for mode 1 and 13 (idle modes) according to Annex 4, paragraph 7.7.
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Test fuel and fuel samples for in-service conformity (Annex 8, paras. 4.4.2. to 4.4.2.2.)

Paragraph 4.4.2.1. covers market fuels declared in paragraph 3.2.2.2.1. of Part 1 of Annex 1. It applies if the manufacturer declared the capability to meet the requirements on these fuels. For this case, tests must be conducted on at least one of the declared market fuels. Before, at least one test was required on each of the declared market fuels. New paragraph 4.4.2.2. says “Fuel samples shall be taken.”, and paragraph 4.4.2. no longer has this sentence. The text no longer says “A manufacturer may request not to sample the fuel from a gas engine.”

If the manufacturer has, in accordance with paragraph 4. to this Regulation has declared the capability to meet the requirements of this Regulation on market fuels declared in paragraph 3.2.2.2.1. of the Information Document as set out in Part 1 of Annex 1 to this Regulation, at least one test tests shall be conducted on each at least one of the declared market fuels.
The test fuel shall be market fuel covered by the relevant standards or reference fuel as specified in Annex 5 to this Regulation. Fuel samples shall be taken.
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Declared market fuel: specific emissions and ECU torque signal (paras. A.1.4.2.1.1. and A.4.2.1.1.)

New paragraph A.1.4.2.1.1. applies when a test uses a market fuel declared in paragraph 3.2.2.2.1. and a power correction factor was documented for it. The specific emissions egas (mg/kWh) must then be calculated for each window and each pollutant by multiplying them by the declared power correction factor. New paragraph A.4.2.1.1. applies when a declared market fuel is used and a power correction factor was documented for it. Then the ECU torque signal must be multiplied by the inverted correction factor. This must be done before the verification with the reference maximum torque curve performed with this specific market fuel.

Calculation of the specific emissions for a declared market fuel
If a test according to this Annex was performed with a market fuel declared in paragraph 3.2.2.2.1. of Part 1 of Annex 1 to this Regulation and a power correction factor in accordance with paragraph 3.2.2.2.2. of Part 1 of Annex 1 to this Regulation was documented for the market fuel used for the test, the specific emissions egas (mg/kWh) shall be calculated for each window and each pollutant by multiplication of the specific emissions with the declared power correction factor.
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Q2Why it changed

Proposed by
Expert from the International Organization of Motor Vehicle Manufacturers (OICA)
Working party
GRPE, 76th session (January 2018)

Reasons

  • The aim is to improve the Engine Control Unit (ECU) torque signal validation requirement. The present provisions force manufacturers to deliberately decrease the accuracy of the torque signal in case of additionally declared market fuels.

    Sources (2)
    “to improve the Engine Control Unit (ECU) torque signal validation requirement in the 06 series of amendments to Regulation No. 49.”
    “The present provisions force manufacturer to deliberately decrease accuracy of torque signal in case of additionally declared market fuels.”

  • The ECU torque information can be calibrated only to one fuel standard (heat value), usually the reference fuel. But the Regulation requires a certain accuracy with both fuels. This can very often be solved only by using the whole tolerance band, which gives a signal with less accuracy for both fuels.

    Sources (2)
    “The ECU torque information can be calibrated only to one fuel standard (heat value), usually it will be to the basic standard fuel (i.e. reference fuel). But the Regulation requires certain accuracy with both fuels.”
    “This can be solved very often only if the whole tolerance band will be used leading to a signal with less accuracy for both fuels.”

  • OICA proposed the changes to increase the accuracy of the torque values used for the emission results during in-service conformity testing. As an alternative option, OICA proposed to determine the torque deviation caused by the alternative fuel heat value compared to the standard fuel. This torque deviation will be documented in the information document as a power correction factor. With this factor, ECU power from PEMS tests with an alternative fuel can be converted to a correct and true power signal for emission calculation.

    Sources (3)
    “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 in order to:”
    “Or alternatively to determine the torque deviation caused by the alternative fuel heat value compared to the standard fuel. This torque deviation will be documented in the information document as a power correction factor.”
    “Using this correction factor the ECU power submitted from the ECU during PEMS testing with an alternative fuel can be converted to a correct and true power signal for emission calculation.”

Document trail

  1. 2017-10ProposalECE/TRANS/WP.29/GRPE/2018/10Proposal by the expert from OICA
  2. —Amended in sessionGRPE-76-16Clarifications proposed by the expert from EC
  3. —Working party adoptsECE/TRANS/WP.29/GRPE/76Session report, Annex VI
  4. 2018-04Sent to WP.29ECE/TRANS/WP.29/2018/47Text that GRPE sent to WP.29 and AC.1
  5. 2018-06WP.29 adoptsECE/TRANS/WP.29/1139Adopted at the 175th session (session report, para. 118)
  6. 2018-12-29In forceC.N.615.2018.TREATIES-XI.B.16.49UN depositary notification

Q3Who is affected

Vehicle manufacturer

  • For each fuel declared under paragraph 4.6.2., determine the power correction factor (paragraph 9.4.2.8.), if applicable according to paragraph 9.4.2.7.
  • Declare the factor for each fuel in item 3.2.2.2.2. of the information document, if applicable.
  • With a declared market fuel and documented factor, make sure specific emissions per window and pollutant are multiplied by it.

Component supplier

  • No direct action for this role.

Technical service / Approval authority

  • Be ready for power correction factors per declared fuel in item 3.2.2.2.2. of the information document, if applicable.
  • Check that, if applicable, the engine family's power correction factor is determined with the parent engine (paragraph 9.4.3.3.1.).

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