Patent ID: 8544439

Claim:
An air intake tract delivering combustion air to an internal combustion engine, said air intake tract comprising: an internal combustion engine receiving airflow from and in airflow communication with said air intake tract; an air filter element arranged in said air intake tract upstream of said engine, said air filter element filtering said combustion air; an air intake duct connected to and forming a portion of said air intake tract, said air intake duct having an air flow passage extending axially therethrough connecting an air inlet end receiving air flow from said filter element and an air outlet end delivering airflow to said internal combustion engine, said air intake duct including: a flexible tubular body; a plurality of radially extending convolutes formed circumferentially on an axially extending outer wall of said tubular body, said convolutes spaced apart axially on said outer wall, said convolutes forming circumferential ring-shaped inwardly extending peaks and outwardly extending troughs in said outer wall, wherein said plurality of convolutes provide flexibility to said tubular body; a liquid sump formed into a lower portion of said flexible tubular body, said sump including a plurality of sump chambers, each sump chamber formed between and connected to at least two adjacent ones of said convolutes; each sump chamber extending radially outwardly from said outer wall; wherein adjacent ones of said sump chambers are separated on said outer wall by at least one of said ring-shaped inwardly extending peaks, wherein adjacent ones of said sump chambers are spaced apart from each other, wherein said air intake duct is flexibly bendable between said adjacent ones of said sump chambers, and wherein said liquid sump stores liquids removed from said airflow.