Obturator for motor vehicle air intake has main closure with flow passage and auxiliary closure with flow opening and plug

摘要

The obturator for a motor vehicle air intake has a main closure (2) with a flow passage (4). An auxiliary closure has a blade (6) with a calibrated flow opening and a second blade (8) with a plug (9) to close off the opening. The two blades have the opening and plug aligned with the flow passage in the main obturator. The through openings form a sealed passage to allow fluid to flow through the passage before the main closure starts to open.