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SAE J1094_201109 : 2011

Constant Volume Sampler System for Exhaust Emissions Measurement

Standard Details

This SAE Information Report describes uniform laboratory techniques for employing the constant volume sampler (CVS) system in measuring various constituents in the exhaust gas of gasoline engines installed on passenger cars and light trucks. The techniques described relate particularly to CVS systems employing positive displacement pumps. This is essentially an almost obsolete system relative to usage in industry and government. Current practice favors the use of a critical flow venturi to measure the diluted exhaust flow. In some areas of CVS practice, alternative procedures are given as a guide toward development of uniform laboratory techniques.The report includes the following sections:Introduction1 . Scope2 . References2.1 Applicable Publications3 . Definitions4 . Test Equipment4.1 Sampler4.2 Bag Analysis4.3 Modal Analysis4.4 Instrument Operating Procedures4.5 Supplementary Discussions4.6 Tailpipe Connections4.7 Chassis Dynamometer5 . Operating and Calibrating Procedure5.1 Calibration5.2 Operating Procedures6 . Data Analysis6.1 Bag Analysis6.2 Modal Analysis6.3 Background6.4 Fuel Economy7 . Safety8 . Notes

Cross Reference: J1056

General Information

Status : Stabilized
Standard Type: Main
Document No: SAE J1094_201109 : 2011
Document Year: 2011
Pages: 48

Life Cycle

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SAE J1094_201109 : 2011
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