MULTI-CYLINDER ENGINE CYLINDER HEAD Russian patent published in 2018 - IPC F01P3/02 F02F1/40 

FIELD: machine building.

SUBSTANCE: invention relates to mechanical engineering, namely to engine building. Multi-cylinder engine contains a cylinder head that includes many combustion chambers, a plurality of intake channels, a first flow channel for the coolant and a second flow channel for the coolant. First coolant flow channel and the second coolant flow channel are independent of each other in the cylinder head. Many combustion chambers are located next to each other in the longitudinal direction of the cylinder head. Plurality of intake ports are located next to each other in the longitudinal direction of the cylinder head and respectively communicate with a plurality of combustion chambers. First flow channel for the refrigerant passes in the longitudinal direction of the cylinder head along the upper surfaces of the intake channels and, in at least one of the sections perpendicular to the longitudinal direction, is located between the flat section and the section along the central line. Moreover, the flat section includes the central axis of the multiple combustion chambers and is parallel to the longitudinal direction. Cross section along the center line includes the center lines of the plurality of inlet channels. At least part of the second flow channel for the refrigerant is located between the combustion chamber and the first flow channel for the refrigerant in at least one of the sections perpendicular to the longitudinal direction. Temperature of the refrigerant flowing in the first flow channel for the refrigerant is lower than the temperature of the coolant flowing in the second flow channel for the refrigerant.

EFFECT: technical result consists in increasing the efficiency of cooling air flowing in the intake channels of the cylinder head of an internal combustion engine.

18 cl, 41 dwg