Luftansaugvorrichtung für eine Brennkraftmaschine

摘要

An air intake device has a collector (1) connected via intake pipes (7-10) to the engine cylinders (3-6). An intermediate collector (11) is formed by an auxiliary unit (12) and sections of the intake pipes. Sections of the intake pipes are led in pairs lying close together and parallel through the intermediate collector. A hinged flap (16, 16') with three flap sections (17-19, 17'-19') is allocated to each pair of adjacent intake pipes; the hinged flap is arranged in the intermediate collector in such a way that in a final position it opens a main aperture (13, 13') by which the intake pipes communicate with the auxiliary unit and a secondary aperture (14, 14') by which the two adjacent intake pipes communicate directly, and closes these in a closure position. This arrangement produces two different effective intake pipe lengths depending on the two positions of the hinged flap.