This part of GB/T 1859 specifies the method for measuring the sound power level of reciprocating internal combustion engines - engineering method. This part applies to reciprocating internal combustion engines within the applicable scope of GB/T 6072.1 (hereinafter referred to as engines unless otherwise specified), and other internal combustion engines for which there is no suitable standard.
GB/T 4129 Acoustics-Requirements for the performance and calibration of reference sound sources used for the determination of sound power levels
GB/T 6072.1 Reciprocating internal combustion engines.Performance.Part 1:Declarations of power,fuel and lubricating oil consumptions and test methods.Additional requirements for engines for general use