| 摘要 |
<p>13 B 31168 Gas Analysis A stream of internal combustion engine effluent gas is analysed for combustible or combustion-supporting constituents by separately in time passing an untreated sample of the gas and a sample treated by addition of whichever of a combustible and a combustion-supporting constituent it is deficient in through a reaction zone maintained in conditions effective to cause mutual reaction of combustible and combustion-supporting constituents and containing a temperature sensor, and measuring the difference in temperature between untreated and treated samples as the result of subjection to those conditions. According to the drawing a stream of exhaust gas is equilibrated in zone 15 and divided into two streams, one of which receives an addition of gasoline vapour in chamber 22B, while the other passes through chamber 22A without addition. Then the streams from chambers 22A and 22B are passed alternatingly over hot wire 30 by the action of valve 27 actuated by external electromagnet 29.</p> |
