Cooling system of motorcycle engine

Abstract

The invention provides a cooling system for a motorcycle engine, which solves the problems that the cylinder of the existing motorcycle engine is easy to enter the cooling liquid and the valve is easy to break. It includes a cylinder block, a cylinder head and a gasket; the cylinder body is integrally formed with a cylinder liner, a cooling cavity is formed between the cylinder liner and the cylinder block, the side of the cylinder block is provided with a water inlet channel, and the outer ring surface of the cooling cavity has a drainage The top of the cylinder block has a water outlet hole connected to the drainage groove; the cylinder head has a combustion chamber facing the cylinder liner hole and a water inlet hole facing the water outlet hole. The water ring, the water chamber and the water outlet channel are connected with each other, and the water inlet hole is connected with the water ring. By increasing the distance between the water outlet hole and the cylinder liner hole, the unique sealing method adopted effectively prevents the coolant from entering the cylinder liner; by controlling the flow and velocity of the coolant, more coolant is distributed, increasing The high flushing speed focuses on cooling the hot exhaust valves.

Description

technical field [0001] The invention belongs to the technical field of motorcycles and relates to a cooling system of a motorcycle engine. Background technique [0002] The cylinder of a motorcycle engine consists of a cylinder block and a cylinder head. For example, a Chinese patent discloses a water-cooled motorcycle cylinder block [the authorized announcement number is CN205605322U], which includes a cylinder block, a cylinder liner integrally formed with the cylinder block and embedded in the cylinder block, and a water-cooled cylinder block is provided between the cylinder block and the cylinder liner. There are cooling fins on the outer surface of the cylinder, and heat dissipation channels are formed between adjacent cooling fins. The thickness of the cooling fins gradually decreases from the connection with the cylinder body to the outside. strip groove. Another example is that the Chinese patent discloses a water-cooled cylinder head of a motorcycle engine [the au...

AI Technical Summary

Problems solved by technology

[0003] The upper end of the water-cooling channel in the above-mentioned cylinder block is completely opened, thus forming an open circular water channel. Since the open circular water channel is close to the cylinder liner hole, only 6-7mm, the temperature here is relatively high, while in the cylinder Due to the shape and position error of the cylinder head gasket on the upper surface due to processing, the high-temperature and high-pressure gas easily enters the gap between the cylinder block and the cylinder head, causing the cylinder head gasket to be ablated, thereby causing the cooling water to enter the engine. This will cause the engine oil to turn white, which will seriously affect the normal operation and service life of the engine.

[0004] The water inlet on the cylinder head is waist-shaped, which is inconvenient to process, and the distance from the combustion chamber is relatively close, only 6-7mm, so that the high-temperature and high-pressure gas easily enters the gap between the cylinder block and the cylinder head, causing The sealing gasket is ablated, which causes cooling water to enter the combustion chamber; the water ring surrounds the intake port and the exhaust port at the same time, and has the same cooling effect on the exhaust port and the intake port, and cannot focus on cooling the exhaust port

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