Engine and vehicle

The horizontal opposed engine design with inclined flow guides in dual oil return cavities addresses oil accumulation issues, enhancing lubrication efficiency and reducing oil mist, thus optimizing engine performance and weight.

CN223104651UActive Publication Date: 2025-07-15GREAT WALL MOTOR CO LTD
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Patent Information

Application Number
CN202422595666.8
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-10-25
Publication Date
2025-07-15
Estimated Expiration
2034-10-25

AI Technical Summary

Technical Problem

In existing vehicle engines, the accumulation of engine oil at the bottom of the timing chamber leads to a decrease in the amount of oil circulating in the lubricating system, and the timing chain agitates the engine oil to generate oil and gas, increasing the burden on the crankcase ventilation system, and the structure is complex and the cost is high.

Method used

Set up a sinking oil return chamber on both sides of the engine, and an inclined inner drainage wall and an outer drainage wall are set up in the oil return chamber to improve the oil return efficiency and avoid oil storage dead zones. Directly connect the oil pan through the external oil return pipe to reduce the built-in oil return channel.

Benefits of technology

Improves the oil return efficiency, saves the amount of oil filling, prevents the timing chain from stirring, reduces the burden on the crankcase ventilation system, simplifies the structure, and reduces costs.

✦ Generated by Eureka AI based on patent content.
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Abstract

The utility model discloses an engine and a vehicle, the engine comprises a cylinder body, a timing cavity is formed in the cylinder body, and the cylinder body is provided with an oil pan located below the timing cavity; the cylinder cover and the cylinder body are connected and jointly define an oil return cavity, the oil return cavity is communicated with the timing cavity, an oil return hole is formed in the bottom wall of the oil return cavity, and the oil return hole is communicated with the oil pan; an oil return cavity bottom face distributed around the oil return hole is formed at the bottom of the oil return cavity, at least part of the side wall face, close to the cylinder body, of the oil return cavity is constructed to be an inner drainage wall, at least part of the side wall face, away from the cylinder body, of the oil return cavity is constructed to be an outer drainage wall, and the inner drainage wall is constructed to be obliquely arranged towards the oil return cavity bottom face from top to bottom. And the outer drainage wall is inclined towards the bottom surface of the oil return cavity from top to bottom. According to the engine, the inner drainage wall and the outer drainage wall which are inclined towards the bottom face of the oil return cavity are arranged in the oil return cavity, so that engine oil in the oil return cavity can be well guided to the bottom face of the oil return cavity, and the oil return efficiency of the two sides of the engine is effectively improved.
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