WATER JACKET STRUCTURE FOR CYLINDER HEAD OF DUAL FUEL ENGINE

摘要

The present invention relates to a cylinder head of a large engine using dual fuel and, more specifically, to a water jacket structure cooling a cylinder head block and an injector installed on the cylinder head block against combustion heat. The water jacket structure of a cylinder head block for a dual fuel engine of the present invention is mounted on an upper part of an engine block (2a) to form an upper end of a combustion chamber and is formed to circulate cooling water in the cylinder head block (110) for a dual fuel engine having an oil fuel injector (120), a pilot injector (130), and intake and exhaust valves (140, 150). The water jacket structure comprises: an upper passage (116a) which includes a cooling circulation passage between the intake port (112) and an exhaust port (114) so that the pilot injector (130) passes through the passing space; a lower passage (116b) which is formed on a lower part of the upper passage (116a) to be partitioned by a partition wall (118) and adjacent to the combustion chamber; and a first through hole (119) which penetrates the partition wall (118) separating the upper passage (116a) from the lower passage (116b) so that a portion of the cooling water flowing through the upper passage (116a) and the lower passage (116b) crosses the partition wall (118) to be mixed.