Method and apparatus for determining emission measurement accura

Details Method and apparatus for determining emission measurement accura Method and apparatus for determining emission measurement accura

1996-08-23

1998-02-10

Raevis, Robert

Measuring and testing

Gas analysis

Gas of combustion

G01N 700

Patent

active

057171300

ABSTRACT:
Methods and apparatus for determining and assessing the accuracy of exhaust gas measurements using the total emission method is provided which allows for virtually real-time determination of the presence of a source of inaccuracy in the total emission measurement, thereby notifying an operator to interrupt the test prior to its completion to search out the source of the inaccuracy. In accordance with one aspect of the present invention, the measured total hydrocarbons are treated as unburned fuel (C.sub.8 basis) plus burning zone hydrocarbons (C.sub.1 basis).

REFERENCES:
patent: 5343906 (1994-09-01), Tibbals, III
SAE Technical Paper Series, pp. 119-127, reprinted from Design, Modeling, and Emission Control for Small Two-and Four-Stroke Engines (SP-1195); "A Convenient Technique for Determining Two-Stroke Emission Measurement Accuracy and A/F Ratio"; Ron Y Xu.
Society of Automotive Engineers; pp. 1-18; "Development of a Fuel-Based Mass Emission Measurement Procedure"; Donald L. Stivender.

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