Rotary internal combustion engine with cooled insert

摘要

A rotary internal combustion engine having an insert opening defined in a hot area of one of the walls of the stator body and in communication with its internal cavity, at least one groove defined within the opening around a perimeter thereof, at least one coolant inlet channel defined therein in communication with each groove, and at least one coolant outlet channel defined therein in communication with each groove. A cooling jacket lines the insert opening, the cooling jacket cooperating with each groove to define a cooling gallery around the insert opening. An insert is sealingly received in the cooling jacket, the insert being made of a material having a greater heat resistance than that of the wall.

主权项

1. A rotary internal combustion engine comprising:
a stator body having an internal cavity enclosed by a plurality of walls, one of the walls having an insert opening defined across a thickness of the one of the walls in a hot area thereof and in communication with the internal cavity, at least one groove defined in the one of the walls within the insert opening to extend around a perimeter of the insert opening, at least one coolant inlet channel defined in the one of the walls in communication with each groove, and at least one coolant outlet channel defined in the one of the walls in communication with each groove; a rotor body received within the internal cavity and sealingly engaged with the walls to define at least one chamber undergoing intake, compression, expansion and exhaust phases as the movable body moves; a cooling jacket received in and lining the insert opening, the cooling jacket cooperating with each groove to define a cooling gallery around the insert opening, the cooling gallery surrounding the cooling jacket; and an insert sealingly received in the cooling jacket, the cooling gallery surrounding the insert with the cooling jacket extending between the cooling gallery and the insert, the insert being made of a material having a greater heat resistance than that of the one of the walls, wherein along most of the length of the insert defined along the thickness of the one of the walls, the cooling jacket extends between the insert and the one of the walls to prevent direct contact between the insert and the one of the walls.