| 摘要 |
PROBLEM TO BE SOLVED: To provide an analysis system that solves problems due to stop of an engine, in exhaust gas analysis of a vehicle where the engine rotation stops while the vehicle is driven.SOLUTION: An exhaust gas analysis system includes: exhaust gas introduction piping 3 where one end of the piping is opened to an exhaust gas flow path 300 and the other end of the piping is connected to an exhaust gas analyzing device 2; and a switching mechanism 4 for selectively switching between a sampling path for sampling exhaust gas and guiding the exhaust gas to the analyzing device 2 by the exhaust gas introduction piping 3, and an atmospheric air introduction path for introducing atmospheric air and guiding the atmospheric air to the analyzing device 2, on an upstream side of the analyzing device 2. When an engine is in operation, a path to the analyzing device 2 is made to be the sampling path by the switching mechanism 4, and when the engine is stopped, the path to the analyzing device 2 is made to be the atmospheric air introduction path by the switching mechanism 4. |
