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SAE J1207
Measurement Procedure for Determination of Silencer Effectiveness in Reducing Engine Intake or Exhaust Sound Level
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STANDARD published on 1.5.2014
The information about the standard:
Designation standards: SAE J1207
Publication date standards: 1.5.2014
SKU: NS-662371
Country: American technical standard
Category: Technical standards SAE
Annotation of standard text SAE J1207 :
This SAE Recommended Practice sets forth the instrumentation, environment, and test procedures to be used in measuring the silencer system effectiveness in reducing intake or exhaust sound level of internal combustion engines. The system shall include the intake or exhaust silencer, related piping, and components. This procedure is intended for engine-dynamometer testing and is not necessarily applicable to vehicle testing (see Appendix A). The effect of the exhaust or intake system on the sound level of the overall machine must be determined using other procedures. This procedure may be successively applied to various silencer configurations to determine relative effectiveness for that engine. Insertion loss for individual silencers may be calculated through measurement of the silenced and unsilenced system.
SUBJECT TAXONOMY: Noise pollution, Noise, Exterior noise, Noise measurement, Diesel / Compression Ignition engines, Spark ignition engines, Exhaust systems
SUBFILE: Automotive
TYPE OF DOCUMENT: Ground Vehicle Standard
Stabilized: May 2014 
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