| 摘要 |
PROBLEM TO BE SOLVED: To provide an intake passage 100 of an internal combustion engine. SOLUTION: An adjustable guide vane 120 is configured to modify the velocity distribution inside the intake passage so as to vary the mean swirl number generated by the passage. The intake passage may comprise a combination of two or more ports, which can be helical or tangential 140, 150, depending on their shape. The mean swirl number of the internal combustion engine can be varied by varying the velocity distribution inside the intake passage 100. Contrary to existing systems to vary the swirl in internal combustion engines, the proposed invention does not require the separation of both ports inside the intake passage by a wall in order to achieve a variation in the swirl. COPYRIGHT: (C)2010,JPO&INPIT
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