BS ISO 8178-3:1994 Reciprocating internal combustion engines - Exhaust emission measurement - Definitions and methods of measurement of exhaust gas smoke under steady state conditions
This part of ISO 8178 specifies two methods for the measurement of exhaust gas smoke characteristics of reciprocating internal combustion (RIC) engines operating under steady-state conditions. One method evaluates smoke opacity by measurement of the obscuration of a light beam; the other evaluates the soot content by measurement of the blackening of a filter. Where necessary, individual requirements may be specified for particular engine applications.
This part of ISO 8178 does not deal with measure-ment under transient conditions; if smokemeters are used under transient conditions, the results from dif-ferent types of instrument cannot be compared un-less the sampling conditions are identical and the instrument characteristics are compatible.
This part of ISO 8178 is applicable to RIC engines for land, rail-traction and marine use, including engines used to propel agricultural tractors and road vehicles.
It may be applied to engines used to propel road-construction and earth-moving machines, industrial trucks, and for other applications where no suitable International Standards for exhaust gas smoke measurement of these engines exist.
NOTE 1 If water is injected into the exhaust system, measurement or sampling can only be made upstream of the point of water injection.
BS ISO 8178-3:1994 history
2019BS ISO 8178-3:2019 Reciprocating internal combustion engines. Exhaust emission measurement. Test procedures for measurement of exhaust gas smoke emissions from compression ignition engines using a filter type smoke meter
1996BS ISO 8178-3:1996 Reciprocating internal combustion engines - Exhaust emission measurement - Definitions and methods of measurement of exhaust gas smoke under steady state conditions
1996BS ISO 8178-3:1994 Reciprocating internal combustion engines - Exhaust emission measurement - Definitions and methods of measurement of exhaust gas smoke under steady state conditions