| 摘要 |
<p>Testing particulate and gaseous exhaust emissions by withdrawing a relatively small sample of raw exhaust (8) from a raw exhaust stream (4), mixing a first portion of the withdrawn raw exhaust sample with a diluting gas in a predetermined constant proportion (12), testing a second portion of the withdrawn raw exhaust sample to measure gaseous emissions (11), and testing the mixed raw exhaust sample and diluting gas to measure particulate emissions (14).</p> |
