Patent ID: 6959679
Filing Date: 2005-11-01
Classification: F02B,F02M,Y02T

Abstract:
1. An air intake device in combination with an internal combustion engine, said device comprising: a primary inlet duct having a front end provided with an inlet opening and an outlet end, said outlet end of said primary duct being in fluid communication with at least one cylinder of said internal combustion engine; and a secondary inlet duct having a inlet end provided with an inlet opening and a rear end closed with a reflector wall having a hole therethrough, said inlet opening of said secondary inlet duct receiving intake air; said primary inlet duct extending through said hole in said reflector wall of said secondary inlet duct so that a portion of said primary inlet duct is disposed within said secondary inlet duct in a radially spaced relationship forming a double-tube chamber within said secondary inlet duct including a resonant cavity defined between said primary inlet duct and said secondary inlet duct; said double-tube chamber is sized so as to generate sound waves enhancing propagation of an intake air flow toward said at least one cylinder of said internal combustion engine through said primary inlet duct.