Method and apparatus for insuring the integrity of vehicle testing procedures
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United States of America Patent
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Jun 11, 1996
Grant Date -
N/A
app pub date -
Aug 8, 1995
filing date -
Aug 8, 1995
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A method and apparatus for improving the integrity of a vehicle test procedure insures that the vehicle to which a varying test parameter is applied is the same as the vehicle whose response is required. A random variation to the test parameter is introduced, and the response of a chosen vehicle characteristic to the variation is monitored and correlated with the variations. A high correlation confirms that the vehicle whose response is being monitored is in fact the vehicle to which the parameter is applied. The method may advantageously be used in connection with EPA-sanctioned exhaust emission test protocols.
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