Patent ID: 7484490
Filing Date: 2009-02-03
Classification: F02B,F02D,F16K,Y02T

Abstract:
1. A switching drum seal for a switching drum for opening or closing an intake pipe in an intake manifold system of a multi-cylinder internal combustion engine, said switching drum comprising two spaced-apart, circumferentially extending circumferential sealing sections with circumferential sealing surfaces and two spaced-apart, axially extending axial sealing sections with axial sealing surfaces, and at least one resilient element disposed on a side of a circumferential sealing section facing the switching drum for imparting resilience to the respective circumferential sealing section in a radial direction, said resilient element comprising at least one flexible web which forms a closed contour line together with a circumferential sealing section, and said web comprising two radially resilient sections that are connected with each other via a connecting section, wherein the contour line of the connecting section diverges from the contour line of the radially resilient sections.