SAE J1094_199206 PDF

Description

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

History

J1094_201109	2011-09-06	Latest	Stabilized
J1094_199206	1992-06-01	Historical	Revised
J1094A_197804	1978-04-01	Historical	Revised