Patent ID: 6327853
Filing Date: 2001-12-11
Classification: F01N,F02B,F02F,Y02T

Abstract:
A structure for introducing secondary air into an exhaust path of an internal combustion engine, comprising a secondary air introducing path formed along a water jacket in a cylinder head and extending entirely between said exhaust path and an upper face of said cylinder head,wherein an outlet of said secondary air introducing path is formed to direct to a combustion-chamber-side tip portion of an exhaust valve, andwherein said secondary air introducing path is located in an exhaust manifold side with respect to said exhaust valve,wherein said secondary air introducing path is directed to a peripheral wall of said cylinder head,wherein said secondary air introducing path is formed with a path forming member attached to the peripheral wall of said cylinder head, andwherein a gasket is intervened between said path forming member and an exhaust manifold attaching surface of said cylinder head.