An air-cooled structure of a motorcycle internal combustion engine

Abstract

The invention provides an air-cooled structure of a motorcycle internal combustion engine, which belongs to the technical field of internal combustion engines. It solves the problem that the temperature of the cylinder head of the existing internal combustion engine is too high at the side of the chain cavity. The air-cooled structure of the internal combustion engine of the motorcycle, the internal combustion engine includes a cylinder head, the cylinder head has a combustion chamber, a valve chamber and a chain chamber respectively, the chain chamber is flat, the air-cooled structure includes an air guide sleeve, the cylinder head has an air inlet channel, a rear The inner end of the air outlet channel and the right air outlet channel, the inner end of the air inlet channel are respectively connected with the inner end of the rear air outlet channel and the inner end of the right air outlet channel, the air guide sleeve is installed in the chain cavity, the inner end of the air guide sleeve The end communicates with the inner end of the air inlet channel. The air-cooled structure of the internal combustion engine of the motorcycle can evenly cool the surroundings of the combustion chamber, and at the same time reduce the temperature of the engine oil in the cylinder head and the chain cavity.

Description

technical field [0001] The invention belongs to the technical field of internal combustion engines, and relates to an air cooling structure of a motorcycle internal combustion engine. Background technique [0002] There is an exhaust channel on the front side of the conventional cylinder head, and an air intake channel on the rear side, while the air channel on the top of the combustion chamber intakes air at the front side and outputs air at the right and rear sides, and the chain chamber is located on the left side of the cylinder block , due to the requirements of arranging the chain and sealing the oil, the outlet cannot be set. The combustion chamber is equipped with cooling fins on the front, right and rear sides, which are in direct contact with the outside world. However, the combustion chamber has no cooling fins on the side of the chain cavity, and is in contact with the oil mist. Because the temperature of the engine oil is relatively high, this side The ability ...

AI Technical Summary

Problems solved by technology

However, this internal combustion engine is still restricted by the structure of the chain cavity. The temperature of the cylinder head combustion chamber is the highest on the side of the chain cavity, and the seat ring is easy to be ablated. Due to the uneven temperature of the combustion chamber in the circumferential direction, the deformation is uneven, and the top of the combustion chamber appears. Warping air leakage, cylinder out of round, resulting in air leakage, oil burning, cylinder scuffing and other failure phenomena

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