Patent ID: 9512771
Filing Date: 2016-12-06
CPC Classification: B60K,B60Y,F01N

Claim Text:
1. An exhaust system structure in an internal combustion engine for a vehicle in which an engine main body having a cylinder head is mounted on a vehicle body frame, and an exhaust muffler to which exhaust gas from the cylinder head is guided extends in a vehicle width direction and is disposed on a rear portion of the vehicle body frame, the exhaust system structure comprising: an exhaust pipe extending in a forward-rearward direction in front of the exhaust muffler so as to guide the exhaust gas from the cylinder head; a catalytic device disposed between the exhaust pipe and the exhaust muffler, the catalytic device being coaxially connected to the exhaust pipe and connected to the exhaust muffler from a front of the exhaust muffler so as to form substantially a shape of a T as viewed in plan; a reinforcing cover covering the catalytic device, the reinforcing cover having one end portion fixed to an upstream end portion of the catalytic device and having another end portion fixed to the exhaust muffler, and the reinforcing cover being formed so as to increase in at least width along the vehicle width direction with decreasing distance to the exhaust muffler; a first heat insulating member covering the reinforcing cover from above, an extending portion extending rearwardly upward along an outer periphery of the exhaust muffler, the extending portion being formed integrally with a rear portion of the first heat insulating member; and a second heat insulating member disposed so as to cover the exhaust muffler from above, the second heat insulating member integrally having a cover portion covering the extending portion from above and inclined rearwardly upward.