Engine cooling water jacket and engine

Abstract

The invention provides an engine cooling water jacket and an engine. The engine cooling water jacket comprises a water jacket body, and the water jacket body sleeves the outer circumference of one endof a cylinder sleeve of the engine so that a gap can be formed between the inner wall of the water jacket body and the outer wall of the cylinder sleeve to form an annular cooling water cavity. The engine cooling water jacket further includes a water inlet pipe disposed on one side of the water jacket body, the cooling water cavity communicates with the water inlet pipe, and cooling water can enter the cooling water cavity through the water inlet pipe to cool the cylinder sleeve. The cooling water jacket is a separate component independent of a machine body of the engine, a tappet cavity is integrally formed above the cooling water jacket, the casting processability of the machine body of the engine can be effectively improved, the structure of the machine body is simplified, and the height of the cooling water jacket is adjusted to control a cooling area of the cylinder sleeve.

Description

technical field [0001] The invention relates to the technical field of engine cylinders, in particular to an engine cooling water jacket and an engine. Background technique [0002] With the increase of engine power density and strengthening degree, the heat load on the engine is greatly increased. Since the cylinder liner participates in the composition of the combustion chamber, the heat in the combustion chamber is transferred to the outside through the cylinder liner, so the cooling of the cylinder liner is particularly important, and the design of the cooling water jacket must meet the increasingly stringent heat load requirements. [0003] Existing cooling water jackets are generally directly cast and arranged inside the machine body. When arranging, not only the casting process must be considered, but also the structure of the machine body is restricted, which limits the design operability of the designer to a certain extent. The lifter cavity is usually also cast on...

AI Technical Summary

Problems solved by technology

[0003] The existing cooling water jackets are generally directly cast and arranged inside the machine body. When arranging, not only the casting process must be considered, but also the structure of the machine body is restricted, which limits the design operability of the designer to a certain extent.

The lifter cavity is generally cast on the body, so that the arrangement position of the lifter cavity needs to be reserved during the design of the body, which is limited in both design and casting

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