Air cleaner assembly with integrated acoustic resonator

1. An air induction system for a vehicle having an engine, the air induction system comprising:

a housing having an air flow path passing therethrough, the housing including a first housing member and a second housing member;

a filter located within the housing and disposed in the air flow path for removing debris from intake air; and

an acoustic resonator integral with the first housing member, the resonator operative to reduce noise generated by the engine, the acoustic resonator including:

a tubular outer wall having an axial elongation length L1 from a first axial end arranged nearest to the filter, to an opposing second axial end of the tubular outer wall;

a circumferentially closed tubular inner wall arranged in a radial interior of and spaced radially away from tubular outer wall, the circumferentially closed tubular inner wall having an axial elongation length L2 from a first axial end to an opposing second axial end of the circumferentially closed tubular inner wall;

wherein the circumferentially closed tubular inner wall at its radial interior forms an airflow passage conducting air flow entering or leaving the housing on the air flow path;

an annular resonator chamber arranged between and defined by radial spacing separating the tubular outer wall and the circumferentially closed tubular inner wall;

an annular end wall radially closing a first axial end of the annular resonator chamber from tubular outer wall to circumferentially closed tubular inner wall, the annular end wall arranged proximate to the first axial end of the tubular outer wall or the first axial end of the circumferentially closed tubular inner wall;

wherein the annular resonator chamber is closed radially, and has an annular opening at a second axial end of the chamber, the annular opening arranged radially between the tubular outer wall and the circumferentially closed tubular inner wall and in communication with the airflow path;

wherein the acoustic resonator is arranged at least partially in an interior of the housing.

2. The air induction system of claim 1 , wherein

the circumferentially closed tubular inner wall is a cylinder and the tubular outer wall is a cylinder concentrically disposed about the circumferentially closed tubular inner wall forming the annular resonator chamber therebetween.

3. The air induction system of claim 2 , wherein

the resonator chamber is operative to alter sound waves produced by the engine.

4. The air induction system of claim 1 , wherein

the resonator further includes a plurality of ribs extending between and connecting the circumferentially closed tubular inner wall and the tubular outer wall and dividing the resonator chamber into a plurality of axially extending radially closed sub-chambers which open at the annular opening of the resonator chamber.

5. The air induction system of claim 1 , wherein

L1 is greater than L2 forming an expansion chamber at the second axial end of the circumferentially closed tubular inner wall, the expansion chamber coupling the resonator chamber to the air passage.

6. The air induction system of claim 1 , wherein

the circumferentially closed tubular inner wall and the tubular outer wall of the resonator axially extend into a chamber defined by the housing and a flow face of the filter.

7. The air induction system of claim 1 , wherein:

the housing includes

a first housing member; and

a second housing member, the first housing member removably secured onto the second housing member, the first and second housing members defining and closing a chamber in which the filter is installed in the housing;

wherein the acoustic resonator is integrally formed together with the first housing member as a one-piece unitary molded component.

8. The air cleaner assembly of claim 7 , wherein

the first housing member defines a cover of the housing.

9. The air induction system of claim 1 wherein

the tubular outer wall is circumferentially closed.

10. The air induction system of claim 1 wherein

the annular opening to the annular chamber is formed by radial spacing between the tubular outer wall and the circumferentially closed tubular inner wall;

wherein the annular opening is arranged at the opposing second axial end of the circumferentially closed tubular inner wall.

11. The air induction system of claim 1 wherein

the tubular outer wall, circumferentially closed tubular inner wall and the an annular end wall are formed together as a unitary one-piece component.

12. The air induction system of claim 1 wherein

the annular end wall closing the first axial end of the annular resonator chamber is arranged at and connects the first axial end of the tubular outer wall to the first axial end of the circumferentially closed tubular inner wall.