This document specifies the measurement method and requirements for combustion air inlet noise of air cleaners which are installed on reciprocating internal combustion engines, including laboratory measurement (engineering method and survey method) and site measurement (survey method).

This document applies to all air cleaners installed on reciprocating internal combustion engines (reciprocating internal combustion engine is referred to as engine hereafter, except for specific explanations) falling within the field of application of ISO 3046-1 and/or other air induction installation.