| 摘要 |
The invention relates to an arrangement having an intake air device (1) comprising a diffuser in the form of a cylinder casing (1a) which is at least partially perforated. At one end, it can be connected to a fresh air duct (2) and, at the other end, has an endpiece (1a1). Along substantially its entire length the cylinder casing (1a) has a shield which covers part of the periphery of the casing and of which the position can be adjusted about the cylinder axis. The shield is rigid relative to the cylinder casing (1a) and the latter is in turn rotatable about the above-mentioned axis, thus rendering the position of the shield adjustable. |
