Exhaust purification apparatus

An exhaust purification apparatus for purifying exhaust gas discharged from an engine, comprising:

• a particulate filter configured to collect and remove particulate matter;
• a secondary filter configured to collect and remove the particulate matter;
• and
• a plurality of exhaust passages comprising a first exhaust passage and a second exhaust passage coupled in parallel to each other and coupled to an exhaust passage on a downstream side of the particulate filter,
• wherein the first exhaust passage is configured to communicate with a tail pipe via the secondary filter in an initial state of the particulate filter, and the second exhaust passage is configured to be closed by a liquid in the initial state of the particulate filter and communicate with the tail pipe after the start of use of the particulate filter when the secondary filter is clogged with the particulate matter and communication of the first exhaust passage with the tail pipe is blocked to cause an increase in pressure loss of the secondary filter and an increase in an exhaust pressure such that discharge of the liquid and/or evaporation of the liquid occurs.