Exhaust structure of engine

An exhaust structure of an engine, the exhaust structure comprising:

• an engine body in which a plurality of cylinders and a plurality of exhaust ports are formed, the plurality of cylinders being arranged in a cylinder arrangement direction, which is predetermined, the plurality of exhaust ports extending from the plurality of cylinders;
• an intake passage through which intake air to be introduced into the engine body flows;
• an exhaust passage through which exhaust gas led out from the engine body flows;
• and an EGR passage connecting the exhaust passage to the intake passage, wherein
• when one side in an engine width direction, which is orthogonal to the cylinder arrangement direction and an up-down direction, is taken as an exhaust side, and an opposite side of the exhaust side is taken as an intake side, a plurality of exhaust port opening ends are open on an engine exhaust-side surface which is a side surface of the engine body on the exhaust side, the plurality of exhaust port opening ends being outlets of the plurality of exhaust ports,
• the exhaust passage includes
• a first purifying device and a second purifying device which are disposed on the exhaust side of the engine body, and arranged in this order in a flow direction of exhaust gas at a height lower than the plurality of exhaust port opening ends,
• a first connecting passage that includes a plurality of independent passages fixed to the engine exhaust-side surface in such a way as to be in communication with the plurality of exhaust port opening ends, the first connecting passage connecting the plurality of exhaust port opening ends to an upstream end of the first purifying device, and
• a second connecting passage that connects a downstream end of the first purifying device to an upstream end of the second purifying device, and
• the EGR passage includes an EGR pipe that connects a portion of the engine exhaust-side surface to the second connecting passage, the portion being located at a position higher than the first purifying device.