AIR TURBINE FOR COMBUSTION ENGINE

摘要

An air turbine apparatus (10) for use with a combustion engine either as a muffler or as an air intake device is comprised of a housing (12) defining an expansion chamber (20) and an airfoil (50) positioned within the housing (12). The airfoil (50) includes a central aperture (52) extending longitudinally there through that is in fluid communication with both the inlet (18) and the outlet (16) of the housing (12). The airfoil (50) is configured to allow gases flowing through the inlet (18) to flow between the outer edge of the airfoil (50) and the housing (12) and through the aperture (52) of the airfoil (50). In addition, the air travelling through the housing (12) is caused to spin as it travels through the housing (12). This rotational flow increased the rate of flow of gases through the air turbine device (10). An induction tube (22) is provided between the airfoil (50) and the outlet (16) of the housing (12) to encourage turbulent flow of gases without restricting flow to produce a muffling effect and thus a dampening of noise from the combustion engine.