Document ID: chunk:federal_register_of_legislation:F2012C00283:reg:21:p38
Version: federal_register_of_legislation:F2012C00283
Segment Type: reg
Provision Reference: reg 21 (pt 38/39)
Character Range: 362964–366052

the adjustment components, but for components with a continuous variation only the positions defined in paragraph 2.5.2.2. above shall be adopted.
              2.5.2.4. The Type II Test shall be considered satisfactory if one or both of the two following conditions is met:
              2.5.2.4.1. None of the values measured in accordance with paragraph 2.5.2.3. above exceeds the limit values;
              2.5.2.4.2. The maximum content obtained by continuously varying one of the adjustment components while the other components are kept stable does not exceed the limit value, this condition being met for the various combinations of adjustment components other than the one which was varied continuously.
              2.5.2.5. The possible positions of the adjustment components shall be limited:
              2.5.2.5.1. on the one hand, by the larger of the following two values: the lowest idling speed which the engine can reach; the speed recommended by the manufacturer, minus 100 revolutions per minute;
2.5.2.5.2. on the other hand, by the smallest of the following three values:
               The highest speed the engine can attain by activation of the idling speed components;
               The speed recommended by the manufacturer, plus 250 revolutions per minute;
               The cut-in speed of automatic clutches.
              2.5.2.6. In addition, settings incompatible with correct running of the engine shall not be adopted as measurement settings. In particular, when the engine is equipped with several carburettors all the carburettors shall have the same setting.
3.  Sampling of gases
              3.1. The sampling probe shall be inserted into the exhaust pipe to a depth of at least 300 mm into the pipe connecting the exhaust with the sampling bag and as close as possible to the exhaust.
              3.2. The concentration in CO (CCO) and CO2 (CCO2) shall be determined from the measuring instrument readings or recordings, by use of appropriate calibration curves.
              3.3. The corrected concentration for carbon monoxide regarding four-stroke engines is:
              3.4. The concentration in CCO (see paragraph 3.2.) measured according to the formulae contained in paragraph 3.3. need not be corrected if the total of the concentrations measured (CCO + CCO2) is for four-stroke engines at least:
 (a) For petrol  15 per cent
 (b) For LPG  13.5 per cent
 (c) For NG/biomethane 11.5 per cent

Annex 6
  Type III Test

(Verifying emissions of crankcase gases)
              1. Introduction
               This annex describes the procedure for the Type III Test defined in paragraph 5.3.3. of this Regulation.
2.  General provisions
              2.1. The Type III Test shall be carried out on a vehicle with positive- ignition engine, which has been, subjected to the Type I and the Type II Test, as applicable.
              2.2. The engines tested shall include leak-proof engines other than those so designed that even a slight leak may cause unacceptable operating faults (such as flat-twin engines).
              3. Test