Patent ID: 9212578
Filing Date: 2015-12-15
Classification: F01N

Abstract:
1. An exhaust manifold for preventing condensate and gas leakage in an engine, the exhaust manifold comprising: one side main tube having a connection portion having sealing grooves which are formed on at least one place of an outer circumference portion along a circumference thereof; and an other side main tube having a corresponding connection portion which accommodates the connection portion of the one side main tube, wherein at least one seal ring is fitted into each of the sealing grooves of the connection portion of the one side main tube so as to prevent leakage of condensate or exhaust gas, and a swirl groove is formed in an outer radial direction in an inner circumference of the corresponding connection portion of the other side main tube, which is adjacent to a front end portion of the connection portion of the one side main tube, and wherein the swirl groove is formed outward in the radial direction relative to an interface formed between an outside diameter of the one side main tube and an inside diameter of the other side main tube, and an inclined surface, which guides the condensate or the exhaust gas toward a central side of the connection portion of the one side main tube and is connected to the swirl groove, is formed on the front end portion of the connection portion of the one side main tube along a circumference of the front end portion.