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SAE J1094 (SEP2011)

Current Revision

Constant Volume Sampler System for Exhaust Emissions Measurement

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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: Introduction 1 . Scope 2 . References 2.1 Applicable Publications 3 . Definitions 4 . Test Equipment 4.1 Sampler 4.2 Bag Analysis 4.3 Modal Analysis 4.4 Instrument Operating Procedures 4.5 Supplementary Discussions 4.6 Tailpipe Connections 4.7 Chassis Dynamometer 5 . Operating and Calibrating Procedure 5.1 Calibration 5.2 Operating Procedures 6 . Data Analysis 6.1 Bag Analysis 6.2 Modal Analysis 6.3 Background 6.4 Fuel Economy 7 . Safety 8 . Notes

SDO SAE: SAE International
Document Number J1094
Publication Date Sept. 6, 2011
Language en - English
Page Count 48
Revision Level 201109
Supercedes
Committee
Publish Date Document Id Type View
Sept. 6, 2011 J1094_201109 Revision
June 1, 1992 J1094_199206 Revision