Patent ID: 8601985
Filing Date: 2013-12-10
Classification: F01N,Y02T

Abstract:
1. An exhaust gas cooling adapter that is arranged between an exhaust port that is open to a cylinder head of an internal combustion engine and an exhaust manifold, the exhaust gas cooling adapter comprising: an exhaust gas flow path through which exhaust gas flows from the exhaust port to the exhaust manifold, the exhaust gas contacting an inner peripheral surface of the exhaust gas flow path as the exhaust gas flows from the exhaust port to the exhaust manifold; and a coolant flow path that is formed inside of an adapter wall surrounding the exhaust gas flow path, and that cools the exhaust gas that flows through the exhaust gas flow path, wherein the exhaust gas flow path has a curved portion, and a peel inhibiting portion is formed on the inner peripheral surface of the exhaust gas flow path in a region farther toward an inside of a curve of the curved portion than an exhaust gas flow path center line of the curved portion; and the coolant flow path is formed inside of the adapter wall in a region on the inside of the curve of the curved portion.