Internal seal for rotary piston combustion engine

USRE28714A · kind A · utility

Assignees

• Audi NSU Auto Union Aktiengesellschaft · DE
• Wankel GmbH · DE

Inventor

• Max Ruf · Obereisesheim, DE

Key dates

• Filing date: Aug 29, 1974
• Grant date: Feb 17, 1976
• Expiry date: Aug 29, 1994

Classification

• Technology area (CPC —): General

Abstract

The invention relates to an internal seal for rotary piston combustion engines of the trochoid type in which a housing consisting of two end pieces and a multiarcuate shell contains a polygonal piston rotatably mounted on an eccentric. At least one sealing ring conconcentric with the piston axis of rotation is disposed in a recess of the piston in each of its two end faces. The ring is pressed by spring means against the adjoining end piece and is sealingly and slidably engaged therewith to prevent passage of coolant or lubricant into the working chambers. The seal between the sealing ring and a wall of the recess in the end face of the piston is effected by an elastic ring.