AS 3584.4:2021 – Diesel engine systems for underground coal mines Part 4: Emissions
AS 3584.4:2021 – Diesel engine systems for underground coal mines Part 4: Emissions.
highest engine speed at load where 70% of the rated power is delivered
speed used In the NRSC test cycle
Note ito entry: See Clause 2.4.1 for more about intermediate speed.
lowest engine speed at load where 50% of the rated power is delivered
indicates the existence ofan option
engine operating point characterized by a speed and a torque or a power output)
Note ito entry: This is usually a discrete point in a test cycle at which emissions are measured (see Clause 2.4.1).
non-road steady-state test cycle
sequence of discrete engine test modes (see Clause 2.4.2) each with defined speed, torque and weighting factor
Note Ito entry: The weighting factors only apply if the emission test results are expressed as specific emissions (grams per kilowatt hour).
non-road transient test cycle
continuous test cycle that includes a sequence of normalized speed and torque values that vary relatively quickly with time
falter that removes particulate matter from an exhaust gas stream
material collected on the filter medium after diluting exhaust with clean filtered air to a temperature of greater than 315 K (42 °C) and less than or equal to 325 K (52 °C)
Note Ito entry: This includes organic carbon (CC), elemental carbon (EC). condensed hydrocarbons, polycyclic aromatic hydrocarbons (PAH). trace metals and sulphates with associated water.
engine classification with alphabetical labels based on allowable emission levels
Note I to entry: A powerband table for labelling engine systems in accordance with their rated power and corresponding levels of maximum allowable specific emissions Is shown in Clause 5.2.1 ofUNRO96r3:2014,
2.6 Test and measuring equipment
Test and measuring equipment and methods shall conform to the requirements of Iso 8178-1.
Test equipment for the analysis of particulate matter shall, as a minimum, include equipment for the measurement of particle mass concentration and particle size distribution.
The methodologies, instruments and devices employed for the determination of EC shall meet the requirements nominated by NIOSH for the 5040 method.
2.7 Test laboratory
l.ahoratories that perform the tests outlined in this document shall meet the requirements of
AS lSO/IEC 17025.
NOTE By way of example, accreditation bodies which are signatories to the International Laboratory Accreditation Cooperation (ILAC) Mutual Recognition Arrangement (MRA) for testing laboratories may be able to offer accreditation against the requirements of AS ISO/IEC 17025. A listing of ILAC signatories is available from the ILAC website (wwwAlac.org). In Austraha and New Zealand. the National Association of Testing Authorities (NATA). Joint Accreditation System of Australia and New Zealand (JAS.ANZ) and International Accreditation New lealand (IANZ) are signatories to the ILAC MR/i.
2.8 Test fuel
Diesel fuel for type testing shall—
(a) consist of petroleum hydrocarbons;
(b) be free of inorganic acids, visible suspended matter and water; and
(c) have a density in the range 820-850 kg/rn3 as determined in accordance with
Except for those that may have been added by the oil refinery for general commercial use, additives shall not be added to the fuel.
NOTE The Fue?s Quality SrandardsAct 2000 (Cth) contains requirements for diesel.
2.9 Test data treatment
Either molar or mas. bascd cakulatiuns may be used in conversions vi vuluiiietrii CIT1ISSWII VU1UWS (ppm) to gravimetric units (g/kWh) for the determination of specific emissions. The coefficients shown in UNRO96r3:2014 Annex 48. Appendix A.8. Table A.8.1 or ISO 8178-4:2020 Table 6 may be used for mass based calculations. These are average values for air/fuel ratio of A = 2.
Based on the published UJ5 values, approximately 29.026 g/mol, and the u coefficient for NO = 0.0010338 = UNO, may be applied.
2.9.2 Dry to wet corrections
If measured dry, all gaseous concentrations shall be corrected to wet concentrations.
NOTE I Gaseous emissions are usually measured in dry” concentrations, as most analysers require the removal of moisture by cooling the drawn samples.