BS ISO 6855-1:2012

Foreword
Introduction
1 Scope
2 Normative references
3 Terms and definitions
4 Symbols
5 Standard reference conditions
6 Tests
7 Measurement equipment
8 Preparing the test
9 System check procedure
10 Procedure for sampling, analysing and measuring
   the volume of gaseous exhaust emissions
11 Determination of the quantity of gaseous
   exhaust emissions
12 Determination of the fuel consumption
Annex A (normative) - Method and equipment for
        measuring fuel consumption by the fuel flow
        measurement method
Annex B (informative) - Example for record form of
        test fuel specifications
Annex C (informative) - Exhaust gas leakage check
        procedure for the open type CVS system
Annex D (informative) - Determination of the
        dilution factor
Annex E (informative) - Principle of the carbon
        balance method
Annex F (informative) - Simplified determination
        method of the atom number ratio of hydrogen
        and carbon, and that of oxygen and carbon
        in gasoline
Annex G (normative) - Fuel consumption for
        two-stroke engines
Annex H (informative) - Criteria of the statistical
        accuracy for the fuel consumption measurements
Bibliography

Describes 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.

This part of ISO6855 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 ISO3833. It is applicable to mopeds equipped with a spark ignition engine (four-stroke engine, two-stroke engine or rotary piston engine).