| 摘要 |
An engine air intake tract includes a flexible air intake duct having a flexible tubular body. A plurality of radially extending convolutes are formed in and spaced apart on an axially extending outer wall of the tubular body. Each convolute has a circumferential ring-shaped inwardly extending peak bordered by outwardly extending troughs. A liquid sump is formed into a lower portion of the tubular body and includes a plurality of spaced sump chambers with each chamber formed between and connected to at least two adjacent ones of the convolutes and extending radially outwardly from the convolutes.
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