Exhaust device of internal combustion engine

摘要

An exhaust device comprises an exhaust manifold (1). A boss (6) for a heat insulator, a boss (8) for an EGR gas, and a boss (10) for a sensor are formed on an outer peripheral surface of the exhaust manifold (1). An outer end portion of the side wall surface of the boss (6) for the heat insulator and the outer end portion of the side wall surface of the boss (8) for the EGR gas are connected by a bridge member (11), and an outer end portion of the side wall surface of the boss (8) for the EGR and the outer end portion of the side wall surface of the boss (10) for the sensor are connected by a bridge (12) member as well.