Diesel engine cylinder head

Abstract

The invention discloses a diesel engine cylinder head which comprises a cylinder head body provided with a water cavity. Upper water holes which are communicated with the water cavity are opened on the cylinder head body, the four upper water holes are opened in each cylinder diameter range and are a upper water hole (2a), a upper water hole (2b), a upper water hole (2c) and a upper water hole (2d) respectively, and a water baffle board is arranged above the upper water hole (2a) and the upper water hole (2b) on one side of an gas inlet and enables cooling water to cool an exhaust passage and a corresponding nose bridge area firstly after the cooling water enters into the water chamber. A deflector is arranged between the water baffle board and a cylinder head baseboard and arranged to face a cylinder head oil injection hole. Root portions of outlets of gas inlet passages are cast together, and a nose area gap is not reserved on the root portions. According to the diesel engine cylinder head, the structure of the water cavity is simplified, water flow directions can be effectively organized, manufacturing difficulties can be reduced, and the cost can be reduced.

Description

technical field [0001] The invention relates to a cylinder head of a diesel engine, in particular to a water chamber structure of the cylinder head of a diesel engine. Background technique [0002] The working conditions of the engine cylinder head are harsh, and most of the working conditions are in a high temperature state, so the cooling of the important parts inside the cylinder head is very important, and often requires a complex inner cavity design to make the cooling water flow effectively. The cooling parts are cooled successively, but if the structure of the water cavity is too complicated, it will increase the difficulty of manufacturing and increase the cost, and if it is too simple, it cannot meet the cooling requirements. The cavity of the engine cylinder head is of great significance. Contents of the invention [0003] The purpose of the present invention is to overcome the defects in the above-mentioned prior art and provide a diesel engine cylinder head. T...

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Problems solved by technology

[0002] The working conditions of the engine cylinder head are harsh, and most of the working conditions are in a high temperature state, so the cooling of the important parts inside the cylinder head is very important, and often requires a complex inner cavity design to make the cooling water flow effectively. The cooling parts are cooled successively, but if the structure of the water cavity is too complicated, it will increase the difficulty of manufacturing and increase the cost, and if it is too simple, it cannot meet the cooling requirements. The cavity of the engine cylinder head is of great significance

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