GB1357200A - Viscosity torsional vibration dampers - Google Patents

Abstract

1357200 Torsional vibration dampers SCHWERMASCHINENBAU KARL LIEBKNECHT MAGDEBURG KOMBINAT FUR DIESELMOTOREN U INDUSTRIEANLAGEN 6 Aug 1971 37071/71 Heading F2S A torsional vibration damper, for an I.C. engine has a rotating metal flywheel 6 enclosed with viscous liqud in an annular non-elastic container 2 of plastics material with a cover 3 also of the plastics material (such as a thermosetting polyester, phenol or epoxy resin with a filling of textile material, viscose or glass fibres), the container 2 being pressed or moulded on a metal annular support 1 or formed integrally with an annular support 1a, Fig. 6. Holes in the support 1a may have metal bushes (16) pressed into them. The annular cover 3 may have grooves 8 locating over ribs 9 on the container 2 and be secured by adhesive 11 in further grooves 10 in the grooves 8 and ribs 9. It may have filling apertures closed by pressed or glued plugs 12. There may be a metal casing 14 around the outer circumference of the container 2 as shown in Fig. 6. It may extend around the back wall also and this extension may be joined to the support 1, the container 2 having been pressed into it, or it may extend over the support 1a. It may also surround the container and support 1a. The flywheel 6 may be guided on the inner of the internal curved surfaces of the container 2 and this surface may have axial grooves 17, Fig. 7, for the viscous liquid.