Airbox with debris removal system

A method for removing debris from an air filtration element in an airbox for an internal combustion engine, the method comprising:

• providing an airbox housing comprising:
• an intake air inlet, wherein the air inlet comprises a first portion and a second portion;
• an intake air outlet,
• an air chamber between the intake air inlet and the intake air outlet, wherein the air chamber comprises a first portion and a second portion, and
• a filtration element between the intake air inlet and the intake air outlet, wherein the filtration element comprises a first portion configured to remove debris from a first intake air stream in the first portion of the air chamber and a second portion configured to remove debris from a second intake air stream within the second portion of the air chamber;
• at a location between the intake air inlet and the air chamber, sealing the first portion of the intake air inlet to occlude the first portion of the air chamber and the first portion of the filtration element while allowing flow of the second air stream through second portion of the intake air inlet, the second portion of the filtration element, and the second portion of the air chamber;
• and
• removing debris from the first portion of the air filtration element.

A modular airbox system, comprising:

• a housing, comprising:
• a central interior wall in a central plane;
• opposed first and second walls, each in a plane substantially normal to the central plane, wherein the first wall comprises at least one intake air outlet and the second wall comprises at least one debris removal device inlet,
• a substantially cylindrical air chamber fluidly connected between the at least one intake air outlet and the at least one debris removal device inlet, wherein the central interior wall divides the air chamber to form a first air chamber portion and a second air chamber portion, and wherein the each of the first air chamber portion and the second air chamber portion have a substantially semicylindrical shape,
• an annular channel about an external surface of the air chamber, and
• an intake air inlet in a third wall substantially normal to the first wall, the second wall, and the central interior wall, wherein the intake air inlet is fluidly connected to the first air chamber portion and the second air chamber portion, and wherein the air intake comprises a first intake air inlet portion and second intake air inlet portion, and
• moveable damper in the air intake inlet and upstream of the substantially cylindrical air chamber, wherein the damper is configured to seal against an interior wall of the housing and occlude either:
• the first intake air inlet portion and the first air chamber portion, or
• the second intake air inlet portion and the second air chamber portion.