Patent ID: 9010099
Filing Date: 2015-04-21
Classification: F01N,F02B,Y02T

Abstract:
1. An exhaust system for a two-stroke internal combustion engine having one or more exhausts ports, said exhaust system comprising: a hollow outer tube having an inlet end adapted to be connected to one or more exhaust ports of the internal combustion engine and an outlet end for conducting the exhaust gases to the atmosphere; the outer tube having an inlet section, an expansion section, a transition section, a reflector section and an outlet section joined together in sequence and providing for continuous flow of the exhaust through the sections; the inlet section of the outer tube being of uniform diameter along its length, the expansion section gradually increasing in diameter along its length until its joinder with the transition section, the transition section being of a uniform diameter along its length, the reflector section gradually decreasing in diameter along its length from the transition section until its joinder with the outlet section, the outlet section being of uniform diameter along its length; and a first hollow inner tube positioned fully inside the outer tube and having an open inlet end and an open outlet end, the first hollow inner tube forming annular chambers with the outer tube through at least one of the transition, reflector and outlet sections of the outer tube so that the radial distance between the inner tube and outer tube at any given point along the length of at least one of the transition, reflector and outlet sections of the outer tube remains the same, whereby the exhaust gases can flow though the chambers.