Cylindrical shaped gas flow conduit i.e. three path valve, for supplying gas to heat engine of motor vehicle, has sealed unit inhibiting movement of gas between lateral wall and flat shutter, where unit is constituted of lips and grooves

摘要

The conduit has a sealed unit for inhibiting the movement of the gas between a circular shaped lateral wall and a rectangular shaped flat shutter (3) that is mounted in the conduit in a movable manner, where the sealed unit is constituted of sealed lips (10a, 10c, 11a, 11c) and grooves (10b, 11b). The grooves are arranged along longitudinal edges (10, 11) of the shutter. The sealed lips have curvilinear shaped external surfaces (10a', 10c', 11a', 11c') parallel to the wall, respectively.