Body water channel of diesel engine

Abstract

The invention relates to the technical field of diesel locomotives, particularly to a body water channel of a diesel engine. The body water channel is arranged in a body, and the body comprises a crankcase and a plurality of cylinders. The body water channel comprises a main water channel which longitudinally penetrates through the body and sub water channels which are arranged between adjacent cylinder hole separation cavities, wherein the sub water channels and the horizontal direction have an 30-degree included angle; sub water channel water inlets communicate with the main water channel; sub water channel water outlets are formed in the upper plane of the cylinders; a main water channel water inlet is formed in the front end face of the body; a main water channel water outlet is formedin the back end face of the body; and the main water channel water outlet is blocked by a main water channel end cover plate. According to the body water channel, the length of cylinder skirt parts can be decreased through the water channel arrangement manner, weight of the body is decreased, and cooling water enters a water jacket of the upper plane of the cylinders through the main water channel and the sub water channels of the body to cool the upper region of cylinder sleeves, so that cooling water does not pass through the cylinders, the cavitation erosion phenomenon of cylinder holes isprevented, and the service life of the body is prolonged.

Description

technical field [0001] The invention relates to the technical field of diesel locomotives, in particular to a diesel engine body waterway. Background technique [0002] Usually, the body water channel is arranged on the upper part of the crankcase, and there are through holes in the corresponding cylinder positions to communicate with the main water channel, so that the cooling water directly enters the cylinder hole and cools the outer wall of the cylinder liner. The body cylinder skirt of this structure is relatively deep, especially for Medium-speed locomotive diesel engine, the weight of the body is heavy, and after a long time of use, the cooling water will cause cavitation to the cylinder bore, which will affect the service life of the body. There is cooling water between the cylinder liner and the cylinder hole of the body, which requires the sealing of the parts. Relatively high, there is also a risk of cooling water leaking into the oil sump in the lower part of the...

AI Technical Summary

Problems solved by technology

[0002] Usually, the body water channel is arranged on the upper part of the crankcase, and there are through holes in the corresponding cylinder positions to communicate with the main water channel, so that the cooling water directly enters the cylinder hole and cools the outer wall of the cylinder liner. The body cylinder skirt of this structure is relatively deep, especially for Medium-speed locomotive diesel engine, the weight of the body is heavy, and after a long time of use, the cooling water will cause cavitation to the cylinder bore, which will affect the service life of the body. There is cooling water between the cylinder liner and the cylinder hole of the body, which requires the sealing of the parts. Relatively high, there is also a risk of cooling water leaking into the lower crankcase oil pan

At present, the announcement number is CN207485558U, and the announcement date is June 12, 2018. The patent name is "a patent for an internal combustion engine body". Fast, but does not solve the problem of cylinder bore cavitation

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