EXHAUST GAS SAMPLING APPARATUS AND METHOD HAVING A FLOW RATE CHANGEABLE MECHANISM

In order to provide an exhaust gas analysis system that can accurately analyze exhaust gas discharged from an engine of a hybrid vehicle and can also be applied to a test that continues sampling into a sampling bag over a predetermined sampling time, a sampling apparatus 102 is adapted to include: a main flow path ML through which the exhaust gas flows; a sampling flow path SL that is connected to the main flow path ML to sample the exhaust gas into a sampling bag SB; and a constant flow rate mechanism 30 that is provided in the main flow path ML and configured to be able to change a main flow rate that is an exhaust gas flow rate through the main flow path ML. In addition, a control device 40 is adapted to, depending on whether the engine is in an operation state or in a stop state, control the constant flow rate mechanism 30 to change the main flow rate, as well as change a sampling flow rate that is an exhaust gas flow rate through the sampling flow path SL.