| 摘要 |
PROBLEM TO BE SOLVED: To improve the detecting accuracy of carbon monoxide concentration contained in the combustion exhaust gas by taking only part of the sampled combustion exhaust gas into a CO concentration sensor. SOLUTION: Inside an exhaust gathering cylinder 5 is provided a sensor chamber 10, in which a CO concentration sensor 13 for detecting carbon monoxide concentration is arranged, a collector tube 11 for sampling the combustion exhaust gas, and a mixing chamber 12 for mixing the combustion exhaust gas collected for sampling by the collector tube 11 to the sensor chamber 10. An opening 28 for leading most part of the combustion exhaust gas, which flows out of the mixing chamber 12, to the outside the sensor chamber 10 is provided between the sensor chamber 10 and the mixing chamber 12. COPYRIGHT: (C)2004,JPO
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