Motor driven flow control valve for internal combustion engine

摘要

Sewerage pipe (1) is re-lined by equipment comprising a tubular support body with a rubber-elastic expandable part (23) to which is connected an inner, stiffer support part (21) which has an external contour matched to that of the sewerage pipe. The radius of curvature of a basically semicircular shell (24) can be varied and its outer service is tightly attached to the expendable part, at least in the area of an aperture (12), which is provided for a separate bladder (11). Filler material is supplied to damaged is which are sealed by the support body. Preferably, the support part is formed from flexible material with and ellipsoidal cross section and a pressure chamber (22) is formed with the expendable part on the side opposite to the aperture. The expendable part is preferably expanded by water pressure.