Wet cylinder jacket of single-cylinder horizontal diesel engine

Abstract

The invention discloses a wet cylinder jacket of a single-cylinder horizontal diesel engine. A boss, projected to the outer side, is arranged at the top of the cylinder jacket, and the end surface of the top is higher than a plane of a machine body; a pressing limiting boss is arranged at the middle part of the cylinder jacket; an unloading groove is formed below one side of the pressing limiting boss; and two annular grooves are formed in the lower part of the cylinder jacket. Through change of the positioning pressing position and mode of the cylinder jacket and change of the mounting stress condition of the cylinder jacket, the wall thickness of the cylinder jacket can be kept under the same rigidity condition, the cooling effect is improved, the weight is reduced, the vibration and the deformation of the cylinder jacket can be reduced, the cavitation erosion and the noise are reduced, the use reliability of the cylinder jacket is improved, and the life of the cylinder jacket is prolonged.

Description

technical field [0001] The invention relates to a single-cylinder horizontal diesel engine wet cylinder liner, which belongs to the field of diesel engine machinery. Background technique [0002] At present, most small single-cylinder horizontal diesel engines use water cooling, and the cooling effect directly affects the working condition and life of the diesel engine. As a key part of a diesel engine, the cylinder liner is subject to high temperature, high pressure and high-speed friction, and its working condition is very critical. At present, the wet cylinder liner in direct contact with cooling water is widely used. All wet-type cylinder liners are fixed by setting the positioning boss on the top and pressing it. During the assembly process of this pressing method, the boss on the head of the cylinder liner is easy to be broken under excessive pressure, resulting in failure; at the same time, the tail adopts The outer circle is positioned, but the middle part of the cy...

AI Technical Summary

Problems solved by technology

All wet-type cylinder liners are fixed by setting the positioning boss on the top and pressing it. During the assembly process of this pressing method, the boss on the head of the cylinder liner is easy to be broken under excessive pressure, resulting in failure; at the same time, the tail adopts Outer circle positioning, and no support positioning in the middle of the cylinder liner, the cylinder liner is easily deformed after being subjected to lateral force, the emission and power performance of the diesel engine will deteriorate, and the vibration and noise will increase at the same time, and cavitation will easily occur, resulting in early failure

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