Exhaust gas analysis system, exhaust gas collecting device and exhaust gas leak detecting method

An exhaust gas analysis system comprising:

• an exhaust gas collecting device for collecting exhaust gas from an exhaust pipe in which the exhaust gas discharged from an internal combustion engine flows;
• and gas analysis equipment for analyzing the exhaust gas collected by the exhaust gas collecting device, wherein
• the exhaust gas collecting device comprises:
• an exhaust gas collecting part which is provided at an exhaust gas discharge port of the exhaust pipe, having an exhaust gas collecting port that is larger than the exhaust gas discharge port, for collecting air around the exhaust gas discharge port together with the exhaust gas discharged from the exhaust gas discharge port;
• a main flow passage which is connected to the exhaust gas collecting part and in which the exhaust gas and the air collected from the exhaust gas collecting part flow;
• and
• an exhaust gas detecting mechanism for continuously detecting a predetermined component contained in the exhaust gas in the vicinity of the exhaust gas collecting port in the exhaust gas collecting part.