scope:

Specifies the measurement and evaluation methods for gaseous and particulate exhaust emissions from reciprocating internal combustion engines (RIC engines) under steady-state conditions at site, necessary for determining one weighted value for each exhaust gas pollutant. Various combinations of engine load and speed reflect different engine applications. This Part of ISO 8178 is preferably applied when RIC engines used in marine installations, generating sets, diesel electric rail traction or similar application must be measured at site and when it is not possible to do the measurements under test bed conditions or to use the test bed measurement results. This method can be used for determining conformity or certification of new, used or rebuilt engines at site. Confirmation of test bed results with respect to Part 4 of ISO 8178 can also be performed with this document. However, allowances must be made for differences in engine operating parameters from laboratory conditions. The engine must be operated at the same speed and torque measuring points as used for test bed measurement.