Exhaust system for motor vehicle engine, has rough surface with depth of 1.6 micrometers or less formed on area of outer surface of system component such as manifold, exhaust gas guide pipe, catalytic converter, muffler, and tail pipe

摘要

A rough surface with depth of 1.6 micrometers or less is formed on the area of the outer surface of a system component such as a manifold (2), an exhaust gas guide pipe (3), a catalytic converter (4), a muffler (5), and a tail pipe (6). The outer surface with the rough surfaces is preferably formed of stainless steel.