Reciprocating internal combustion engines. Exhaust emission measurement - Test cycles and test procedures for measurement of exhaust gas smoke emissions from compression ignition engines using an opacimeter1 Scope This document specifies the measurement procedures and test cycles for the evaluation of smoke emissions from compression ignition engines using an opacimeter. The tests are carried out under steady state and transient operation using tests cycles which are representative of a given application. The smoke testing is conducted using opacimeter type smoke meters which operate on the light extinction principle. The purpose of this document is to

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