BS ISO 6855-1:2012
$198.66
Mopeds. Measurement method for gaseous exhaust emissions and fuel consumption – General test requirements
| Published By | Publication Date | Number of Pages |
| BSI | 2012 | 64 |
This part of ISO 6855 specifies the general test requirements for measurement for the gaseous exhaust emissions from mopeds, and for determining the fuel consumption of mopeds as defined in ISO 3833. It is applicable to mopeds equipped with a spark ignition engine (four-stroke engine, two-stroke engine or rotary piston engine).
PDF Catalog
| PDF Pages | PDF Title |
|---|---|
| 7 | Foreword |
| 8 | Introduction |
| 9 | 1 Scope 2 Normative references 3 Terms and definitions |
| 10 | 4 Symbols |
| 12 | 5 Standard reference conditions 6 Tests 6.1 Measurement of gaseous exhaust emissions |
| 13 | 6.2 Measurement of fuel consumption 7 Measurement equipment 7.1 Chassis dynamometer 7.2 Gas-collection equipment |
| 14 | 7.3 Analytical equipment 7.4 Cooling equipment |
| 15 | 7.5 Fuel consumption measurement 7.6 Accuracy of instruments and measurements |
| 16 | 8 Preparing the test 8.1 Engine fuel and lubricants 8.2 Description of the test moped 8.3 Conditioning/preparation of the test moped 8.4 Adjustment of the analytical apparatus |
| 17 | 9 System check procedure 9.1 Accuracy of the CVS system 9.2 Metering a constant flow of pure gas (CO or C3H8) using a critical flow orifice 9.3 Metering a limited quantity of pure gas (CO or C3H8) by means of a gravimetric technique 10 Procedure for sampling, analysing and measuring the volume of gaseous exhaust emissions 10.1 Operations to be carried out before the moped start up |
| 20 | 10.2 Beginning of sampling and volume measurement 10.3 End of sampling and volume measurement 10.4 Analysis |
| 21 | 10.5 Measuring the driving distance 10.6 Open type CVS system 11 Determination of the quantity of gaseous exhaust emissions 11.1 Total diluted exhaust mixture volume corrected to the standard reference conditions |
| 22 | 11.2 Exhaust gas sampling and the dilution factor 11.3 Mass of the gaseous exhaust emissions |
| 24 | 12 Determination of the fuel consumption 12.1 Carbon balance method |
| 25 | 12.2 Fuel flow measurement method |
| 26 | 12.3 Calculation of results in litres per 100 km 12.4 Criteria of the statistical accuracy for the fuel consumption measurements |
| 27 | Annex A (normative) Method and equipment for measuring fuel consumption by the fuel flow measurement method |
| 38 | Annex B (informative) Example for record form of test fuel specifications |
| 39 | Annex C (informative) Exhaust gas leakage check procedure for the open type CVS system |
| 44 | Annex D (informative) Determination of the dilution factor |
| 52 | Annex E (informative) Principle of the carbon balance method |
| 55 | Annex F (informative) Simplified determination method of the atom number ratio of hydrogen and carbon, and that of oxygen and carbon in gasoline |
| 57 | Annex G (normative) Fuel consumption for two-stroke engines |
| 58 | Annex H (informative) Criteria of the statistical accuracy for the fuel consumption measurements |
| 60 | Bibliography |
