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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:

  1. Introduction

    1. 1. Scope

    2. 2. References

    3. 2.1 Applicable Publications

    4. 3. Definitions

    5. 4. Test Equipment

    6. 4.1 Sampler

    7. 4.2 Bag Analysis

    8. 4.3 Modal Analysis

    9. 4.4 Instrument Operating Procedures

    10. 4.5 Supplementary Discussions

    11. 4.6 Tailpipe Connections

    12. 4.7 Chassis Dynamometer

    13. 5. Operating and Calibrating Procedure

    14. 5.1 Calibration

    15. 5.2 Operating Procedures

    16. 6. Data Analysis

    17. 6.1 Bag Analysis

    18. 6.2 Modal Analysis

    19. 6.3 Background

    20. 6.4 Fuel Economy

    21. 7. Safety

    22. 8. Notes

Product Details

Published:
09/01/2011
File Size:
1 file , 7.8 MB

Click here to purchase
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. In some areas of CVS practice, alternate procedures are given as a guide toward development of uniform laboratory techniques.

Product Details

Published:
09/06/2011
File Size:
1 file , 7.8 MB

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