BS ISO 8178-9. Reciprocating internal combustion engines. Exhaust emission measurement. Part 9. Test cycles & test procedures for test bed measurement of exhaust gas smoke emissions from compression ignition engines operating under transient conditions Reciprocating engines, Internal combustion engines, Prime movers, Exhaust gases, Pollutant gases, Gases, Combustion products, Emission, Smoke, Particulate air pollutants, Compression-ignition engines