Patent ID: 6178745
Filing Date: 2001-01-30
Classification: F01N

Abstract:
An exhaust assembly for use with a motor vehicle having a combustion engine, said exhaust assembly comprising combustion engine connection means, at least one exhaust and at least one muffler, wherein means are provided for controlling the damping characteristic of said exhaust assembly, wherein said exhaust assembly comprises a housing and an inner tube extending coaxial inside said housing, said inner tube being provided with perforations, a valve provided inside said inner tube, said valve operable between open and closed positions at will by an operator, independently from any gas pressure inside said inner tube and said housing, such that, when said valve is in said closed position, exhaust gases are forced through said perforations into a ring-shaped space between said inner tube and said housing and out of said exhaust assembly, whereas, when said valve is open, said exhaust gasses leave said exhaust assembly primarily through said inner tube along an unobstructed linear path.