LEAKPROOF EXHAUST MANIFOLD OF AN INTERNAL COMBUSTION ENGINE

摘要

A leak prevention exhaust manifold of an engine is provided to prevent the exhaust gas from leaking from a connection part of the exhaust manifold since a gap located in a seal ring of the connection part becomes estranged. A leak prevention exhaust manifold of an engine comprises two main pipes(2) connected with each other. A connection part(11) of one side main pipe is inserted in the other connection part of the other side main pipe. A plurality of seal ring groove(11a) for a seal ring is located along the outer circumference of the connection part. Two or more seal rings(6) are inserted in the groove in order to prevent the leak of the exhaust gas. A both end part gap(6a) of sealing is arranged to be crossed. The both end part gap of the sealing is far arranged.