Single cylinder air cooled cylinder liner for an engine

By designing fins with gradually increasing thickness and convection channels, combined with a detachable housing structure, the problem of insufficient heat dissipation of single-cylinder air-cooled cylinder liners under low-speed, high-load conditions was solved, enabling flexible switching between air-cooling and water-cooling modes, and improving heat dissipation efficiency and engine reliability.

CN224532842UActive Publication Date: 2026-07-21JINYUN COUNTY BAOSHENG CYLINDER LINER CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
JINYUN COUNTY BAOSHENG CYLINDER LINER CO LTD
Filing Date
2025-10-13
Publication Date
2026-07-21

AI Technical Summary

Technical Problem

Existing single-cylinder air-cooled cylinder liners have poor air-cooling performance under low-speed, high-load conditions, resulting in insufficient heat dissipation capacity, affecting engine life, and traditional heat dissipation structures cannot adapt to the heat dissipation requirements under different loads.

Method used

The design incorporates progressively thicker fins and alternating convection slots, combined with a detachable housing structure, enabling flexible switching between air-cooling and water-cooling modes. The fin layout and convection slots optimize airflow organization, enhancing heat dissipation efficiency and allowing for the rapid installation of a water-cooling system when needed.

Benefits of technology

It improves heat dissipation efficiency, makes temperature distribution more uniform, avoids local overheating, reduces maintenance costs, enables on-demand selection of cooling methods, and enhances engine reliability and service life.

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Abstract

The utility model relates to the technical field of engine, and disclose a single cylinder air -cooled cylinder liner of engine, include: cylinder liner body, the outside of cylinder liner body is equipped with a plurality of fin for radiating heat, and fin is provided with convection groove, expansion structure sets up in the outside of cylinder liner body for cooling fin, and expansion structure includes first casing and second casing, and first casing and second casing all are with the detachable connection of cylinder liner body, and first casing and second casing form a sealed casing in the outside of a plurality of fins, and through the fin design of gradually increasing thickness and the convection groove of alternate arrangement, effectively enhance the turbulent effect of air flow, improve the heat dissipation efficiency than traditional equal thickness fin, and the modular expansion structure design makes the engine can be flexibly configured according to different use scene, adopts air -cooled mode when driving on the conventional road, and can quickly install water cooling system when low -speed high -load condition (such as mountain operation), realizes the on -demand selection of cooling mode.
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Citation Information

Patent Citations

  • Single-cylinder air cooling cylinder sleeve of engine

    CN117846803A