Reciprocating internal combustion engines. Measurement method for exhaust silencers. Sound power level of exhaust noise and insertion loss using sound pressure and power loss ratio Ingestion-build-54484 Improved risk management and corporate

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Reciprocating internal combustion engines. Measurement method for exhaust silencers. Sound power level of exhaust noise and insertion loss using sound pressure and power loss ratio Ingestion-build-54484 Improved risk management and corporate1 Scope This International Standard specifies the measurement method and requirements for exhaust silencers which is installed on reciprocating internal combustion engines, including laboratory measurement and site measurement. The following parameters are measured for laboratory measurement (engineering method): the sound power level (A weighted or in frequency bands) of exhaust noise using sound pressure, accuracy grade 2; the insertion loss (A