| 摘要 |
A method and apparatus for assessing the odor intensity of combustion gas produced from an internal combustion engine in which the odor intensity of combustion gas is obtained from the pH-value of an aqueous solution prepared from odor-producing substances, based on a predetermined relationship between pH-value and odor intensity. The odor intensity thus obtained strongly correlates with organoleptically evaluated odor intensity. Since the odor intensity of the gas is determined from the pH-value, the precision and the reliability of the odor intensity measurement are enhanced.
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