| 摘要 |
PROBLEM TO BE SOLVED: To provide a method for analyzing exhaust particles in internal-combustion engine exhaust gas capable of accurately and easily analyzing respective rates of a fuel-derived ingredient amount and a lubricant-derived ingredient amount out of constituents of SOF (a soluble organic fraction) contained in a PM (a particulate matter) in exhaust gas emitted from an internal-combustion engine such as a diesel engine.SOLUTION: In analyzing an SOF in exhaust gas, an amount of a guiding component a, which is not contained in fuel but only in lubricant, is detected. Also, a lubricant-derived ingredient amount Wsa in the SOF is calculated from the guiding component wda in the SOF and the guiding component wca in the lubricant. Then, a fuel-derived ingredient amount Wsb is calculated by subtracting the lubricant-derived ingredient amount Wsa from a separately detected ingredient amount of the SOF Wst. |
