Traduction de «Cycle d'essai en rotation » (Français → Anglais) :

In accordance with section 3.2, if it has been agreed that only one test cycle (ESC or ETC) be run at each test point and the other test cycle (ESC or ETC) run only at the beginning and end of the service accumulation schedule, the deterioration factor calculated for the test cycle that has been run at each test point shall be applicable also for the other test cycle, provided that for both test cycles, the relationship between the measured values run at the beginning and ...[+++]at the end of the service accumulation schedule are similar.

2.2.1. Determination of the Diluted Exhaust Gas Flow PDP-CVS system The calculation of the mass flow over the cycle, if the temperature of the diluted exhaust is kept within ± 6 K over the cycle by using a heat exchanger, is as follows: M TOTW = 1,293 x V0 x NP x (pB - p1 ) x273 / (101,3 x T) where M TOTW = mass of the diluted exhaust gas on wet basis over the cycle V0 = volume of gas pumped per revolution under test conditions (m³/rev) NP = total revolutions of pump per test pB = atmospheric pressure in the test cell (kPa) p1 = press ...[+++]ure drop below atmospheric at the pump inlet (kPa) T = average temperature of the diluted exhaust gas at pump inlet over the cycle (K) If a system with flow compensation is used (i.e. without heat exchanger), the instantaneous mass emissions shall be calculated and integrated over the cycle.

If EN 50242: 1998 is used, the following modifications shall apply: the tests shall be carried out at 55 °C ± 2 °C with cold pre-wash without detergent; the machine used in the test shall be connected to cold water and must hold 12 place settings with a washing index of between 3,35 and 3,75; the machine's drying programme shall be used, but only the cleanliness of the dishes shall be assessed; a weak acidic rinsing agent in accordance with the standard (formula III) shall be used; the rinsing agent setting shall be between 2 and 3; the dosage of dishwashing detergent shall be as recommended by the manufacturer; three attempts shall be carried out at a water hardness in accordance with the standard; a ...[+++]n attempt consists of five washes where the result is read after the fifth wash without the dishes being cleaned between the washes; the result shall be better than or identical to the reference detergent after the fifth wash; recipe for the reference detergent (Detergent B IEC 436) and rinsing agent (formula III), see Appendix B in the standard EN 50242: 1998 (the tensides are to be stored in a cool place in watertight containers not exceeding 1 kg and are to be used within three months).

For that reason a compromise was reached which provides for two alternative test cycles to be introduced in tandem from 2006 onwards: alongside the test cycle originally planned, which, in fact, has been developed for motor cars and brought into line with the technical requirements for motorcycles, a second test cycle, tailored to motorcycles, should be introduced as soon as possible.

An outline compromise was reached, too, on the question of the test cycle to be used, with provision being made for a new worldwide motorcycle test cycle to be introduced in parallel (alongside the existing, modified test cycle for motor cars).

(12) Whereas new type-approval test cycles for gaseous and particulate emissions and smoke opacity are introduced that will allow a more representative evaluation of the emissions performance of diesel engines over test conditions that more closely resemble those encountered by vehicles in-service; whereas a new combined (two cycle) test procedure is introduced for conventional diesel engines and those diesel engines fitted with oxydation catalysts; whereas a new combined (two cycle) test procedure is introduced for gas-fuelled engines and, additionally, for diesel engines fitted with advanced emission control systems; whereas from 20 ...[+++]05, all diesel engines are to be tested on both applicable test cycles; whereas the Commission will monitor progress in negotiations towards a worldwide harmonised test procedure;