Structure of Cooling Water Cavity for Cylinder Liner of V-type High Power Engine

Abstract

The invention belongs to the technical field of internal combustion engines, and relates to a structure of a cooling water cavity for a V-shaped high-power engine cylinder liner, including an engine body, a cylinder liner is arranged in the engine body, a piston is slidably arranged in the cylinder liner, and a cylinder head is connected to the top of the engine body; It is characterized in that: the lower part of the engine body is provided with a water cavity water inlet, a lower water cavity is formed between the outer circle of the lower part of the cylinder liner and the engine body, and an upper water cavity is formed between the curved surface of the lower part of the shoulder of the cylinder liner and the inner cavity of the engine body; The upper part of the body is provided with several oblique water holes, horizontal water holes and vertical water holes, and the oblique water holes include a first oblique water hole, a second oblique water hole and a third oblique water hole. This structure can effectively improve the cooling effect of the upper area of ​​the cylinder liner and reduce the temperature difference in the axial direction of the cylinder liner. At the same time, the structure of the water cavity is simple and the parts are easy to process.

Description

technical field [0001] The invention belongs to the technical field of internal combustion engines, and relates to a structure of a cooling water chamber for a cylinder liner of a V-shaped high-power engine. Background technique [0002] At present, all internal combustion engines use water-cooled cylinder liners. By setting cooling water chambers around the cylinder liners, the cooling water circulates in the water chambers, and the large amount of heat borne by the cylinder liners is exported to ensure that the heated parts of the engine are effectively cooled. [0003] With the emergence of high-power V-type engines, the power per liter of the engine continues to increase, and the heat generated by the combustion in the cylinder also increases, resulting in an increase in the heat load of the engine, especially the upper area of ​​the cylinder liner near the top dead center of the piston due to the combustion of the mixture. The resulting high temperature, high pressure, ...

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Problems solved by technology

However, such a cylinder liner is complex in structure, difficult to process, increases in cost, and affects the overall rigidity of the cylinder liner at the same time

[0006] Therefore, it is necessary to further improve the structure of the cooling water cavity of the cylinder liner. On the one hand, it can solve the shortcomings of the existing V-type high-power engine cylinder liner, such as uneven axial cooling and large temperature differences. On the other hand, it is necessary to simplify the structure of the cylinder liner and reduce the processing technology. Reduce costs and increase production efficiency

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