GB/T 41161-2022 Reciprocating internal combustion engines—Measurement method for combustion noise

GB/T 3241-2010 Electroacoustics—Octave-band and fractional-octave-band filters GB/T 3785.1-2010 Electroacoustics—Sound level meters—Part 1:Specifications GB/T 3785.3-2018 Electroacoustics—Sound level meters—Part 3:Periodic tests GB/T 1859.1-2015 Reciprocating internal combustion engines—Measurement of sound power level using sound pressure—Part 1:Engineering method GB/T 1859.3-2015 Reciprocating internal combustion engines—Measurement of sound power level using sound pressure—Part 3:Precision methods for hemi-anechoic rooms GB/T 1883.1-2005 Reciprocating internal combustion engines—Vocabulary—Part 1:Terms for engine design and operation GB/T 6072.1-2000 Reciprocating internal combustion engines—Performance—Part 1:Standard reference conditions,declarations of power,fuel and lubricating oil consumptions,and test methods GB/T 6072.1-2008 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 GB/T 6072.3-2003 Reciprocating internal combustion engines—Performance—Part 3:Test measurements GB/T 6072.3-2008 Reciprocating internal combustion engines—Performance—Part3:Test measurements GB/T 21404-2008 Internal combustion engine—Determination and method for the measurement of engine power—General requirements GB/T 21404-2022 Internal combustion engines—Determination and method for the measurement of engine power—General requirements GB/T 1883.1-2025 Reciprocating internal combustion engines—Vocabulary—Part 1:Terms for engine design and operation GB/T 1859.1-2026 Reciprocating internal combustion engines—Measurement of sound power level using sound pressure—Part 1:Engineering method