ANNEX VIIEXAMPLE OF CALCULATION PROCEDURE
3.ETC TEST
3.1.Gaseous emissions (diesel engine)
Assume the following test results for a PDP-CVS system
| V0 (m3/rev) | 0,1776 |
| Np (rev) | 23 073 |
| pB (kPa) | 98,0 |
| p1 (kPa) | 2,3 |
| T (K) | 322,5 |
| Ha (g/kg) | 12,8 |
| NOx conce (ppm) | 53,7 |
| NOx concd (ppm) | 0,4 |
| COconce (ppm) | 38,9 |
| COconcd (ppm) | 1,0 |
| HCconce (ppm) | 9,0 |
| HCconcd (ppm) | 3,02 |
| CO2,conce (%) | 0,723 |
| Wact (kWh) | 62,72 |
Calculation of the diluted exhaust gas flow (Annex III, Appendix 2, Section 4.1):
Calculation of the NOx correction factor (Annex III, Appendix 2, Section 4.2):
Calculation of the background corrected concentrations (Annex III, Appendix 2, Section 4.3.1.1):
Assuming a diesel fuel of the composition C1H1,8
Calculation of the emissions mass flow (Annex III, Appendix 2, Section 4.3.1):
Calculation of the specific emissions (Annex III, Appendix 2, Section 4.4):
3.2.Particulate emissions (diesel engine)
Assume the following test results for a PDP-CVS system with double dilution
| MTOTW (kg) | 4 237,2 |
| Mf,p (mg) | 3,03 |
| Mf,b (mg) | 0,044 |
| MTOT (kg) | 2,159 |
| MSEC (kg) | 0,909 |
| Md (mg) | 0,341 |
| MDIL (kg) | 1,245 |
| DF | 18,69 |
| Wact (kWh) | 62,72 |
Calculation of the mass emission (Annex III, Appendix 2, Section 5.1):
Calculation of the background corrected mass emission (Annex III, Appendix 2, Section 5.1):
Calculation of the specific emission (Annex III, Appendix 2, Section 5.2):
3.3.Gaseous emissions (CNG engine)
Assume the following test results for a PDP-CVS system with double dilution
| MTOTW (kg) | 4 237,2 |
| Ha (g/kg) | 12,8 |
| NOx conce (ppm) | 17,2 |
| NOx concd (ppm) | 0,4 |
| COconce (ppm) | 44,3 |
| COconcd (ppm) | 1,0 |
| HCconce (ppm) | 27,0 |
| HCconcd (ppm) | 3,02 |
| CH4 conce (ppm) | 18,0 |
| CH4 concd (ppm) | 1,7 |
| CO2,conce ( %) | 0,723 |
| Wact (kWh) | 62,72 |
Calculation of the NOx, correction factor (Annex III, Appendix 2, Section 4.2):
Calculation of the NMHC concentration (Annex III, Appendix 2, Section 4.3.1):
Calculation of the background corrected concentrations (Annex III, Appendix 2, Section 4.3.1.1):
Assuming a G20 reference fuel (100 % methane) of the composition C1H4:
