South Australian Numbered Regulations South Australian Numbered Regulations132—Requirements of DT80 test cycle
(1) The requirements stated in the following subrules are the minimum standards for the dynamometer, emissions measurement and data management systems necessary to enable the proper conduct of the DT80 test cycle mentioned in rule 131(4)(c).
(2) The DT80 test cycle must be conducted on a chassis dynamometer system that—
(a) can carry out a full throttle transient DT80 test cycle, as described in rule 133, for the vehicle being tested; and
(b) provides for vehicle speed measurement and display, to an accuracy of ± 1% of actual speed; and
(c) provides internal steady state accuracy of ± 1% of calculated required tractive load over ambient temperatures of 2° - 40°C; and
(d) provides a T95 response time of 3 seconds or less; and
(e) provides inertial loading as required by the DT80 protocol at speeds > 15 km/h; and
(f) compensates for aerodynamic drag, rolling resistance and other parasitic losses; and
(g) corrects for ambient temperature, humidity and air density; and
(h) provides torque measurement accuracy of better than 1% full scale; and
(i) keeps roller speed within ± 10 km/h through gear changes; and
(j) restricts overshoot upon initial acceleration of rollers from rest; and
(k) incorporates a driver control panel for remote operation of critical functions from the driver’s seat, including controls for start test and stop test; and
(l) incorporates an emergency system override function; and
(m) is able to communicate speed, load and status signals to enable the driver to undertake the test in accordance with the DT80 procedure; and
(n) is integrated with the gas and particulate analysis system to initiate the start and finish of sampling and measurement, and generates emission results without the need for post-test processing.
(3) The emissions measurement system used for the DT80 test cycle must—
(a) be integrated with the dynamometer system stated in subrule (2); and
(b) have a data averaging interval of 1 second for all equipment; and
(c) provide emissions data sampling output ≥ 5Hz; and
(d) measure oxides of nitrogen (from a diluted and conditioned sample) with an accuracy of ± 30ppm over the range 0 - 1000ppm and ± 5% over the range 1001 - 5000ppm; and
(e) measure particulate matter (from diluted sample) as TSP or PM 10 with an accuracy of ± 10% on a real time continuous basis over a range of 0 - 1000 mg/m³ actual exhaust concentration at a sample temperature of < 51.7°C; and
(f) measure opacity (from a raw exhaust gas sample) with an accuracy of ± 1% over a range of 0 - 100% opacity; and
(g) measure flow rate with an accuracy of ± 5%; and
(h) measure ambient temperature with an accuracy of ± 1°C over a range of 0 - 50°C; and
(i) measure ambient humidity with an accuracy of ± 5% over a range of 0 - 100%; and
(j) compensate or correct for ambient humidity and temperature; and
(k) compensate for exhaust gas transport times and delays; and
(l) provide on-line calibration of the analytical system; and
(m) provide an exhaust sample collection and conditioning system—
(i) that is optimised to accommodate the exhaust temperature and flow rate, and emission concentration, for the vehicle being tested; and
(ii) that provides adequate conditioning of the exhaust gas to eliminate water in the sample stream and reduce temperatures to enable PM to be sampled at < 51.7°C; and
(n) use materials and equipment compatible with the exhaust from diesel-fuelled vehicles.
(4) The data management system used for the DT80 test cycle must—
(a) be integrated with the dynamometer and emissions measurement systems stated in subrules (2) and (3); and
(b) record the following items for each test:
(i) date, time, location and operator;
(ii) emissions analyser calibration data;
(iii) vehicle input data, including test mass tractive load corrections and identifying information;
(iv) dynamometer data (load, speed, distance) on a second by second basis;
(v) test data on a second by second basis from which a mass emission test result in g/km/t can be generated; and
(c) display, store and report all data in the International System of units (SI units); and
(d) provide a system for electronic backup of test data to local and remote media; and
(e) incorporate a quality control system that—
(i) ensures calibrations are carried out in accordance with manufacturers’ specifications; and
(ii) provides records consistent with normal audit requirements; and
(f) print a test report containing at least the following items:
(i) registered business name, ABN and address of the test facility;
(ii) registration number, make, model, GVM rating and date of manufacture of the tested vehicle;
(iii) date and location of test;
(iv) the final calculated NOx and PM results in g/km/t;
(v) the final calculated opacity results in per cent;
(vi) a statement of pass or fail for each emission compared to the emission limits stated in rule 131;
(vii) the signature of the test facility operator confirming that the test was conducted in accordance with the test procedure described in rule 133 and the requirements of this rule.