Engine cylinder body

Abstract

An engine cylinder body comprises a group of cylinders and water jackets which surround the cylinders, the top face of the cylinder body is connected with the cylinder cover, and the bottom of the cylinder body is a crankcase chamber. The cylinder body is characterized in that: ventilation holes passing through up and down are arranged at the air inlet side of the cylinder body. In order to lead the engine oil on the cylinder cover return to a crankcase oil tray, oil return holes passing through up and down are arranged on the cylinder body. In order to balance the pressure in the crankcase chamber, a ventilation hole is arranged in the center of a shaft block of the crankcase. In order to shorten the whole length of the engine, an oil pump mounting snap is arranged at the front end of the cylinder body. The oil return holes and the ventilation holes are designed on the cylinder body, and the oil pump mounting snap is arranged at the front end of the cylinder body, then an oil pump can be directly arranged inside the cylinder body, therefore, the structure is compact and the cooling flow organization is reasonable; slots and holes are arranged on the main bearing base of the cylinder body to lead communication of the adjacent cylinders, therefore the ventilation inside the crankcase is still smooth when the engine is leaned to certain angle.

Description

an engine cylinder block technical field The invention relates to an engine cylinder block. Background technique The cylinder block is the main load-bearing part of the engine. On the one hand, it must bear the impact force generated by the combustion gas explosion. At the same time, the crank and connecting rod mechanism inside the engine is installed on the cylinder block; Above the cylinder block, the structure of the cylinder block determines the structure of the entire engine, which affects the layout of the engine room of the vehicle. In addition, the layout of the cooling water jacket and oil passages on the cylinder block also affects the performance of the cooling system and lubrication system of the entire engine and the overall structure. Due to the limitation of the layout of the whole vehicle, especially the cabin of a car, the engine is required to have a compact structure. Therefore, it is very important to design a cylinder block with a reasonable structur...

AI Technical Summary

Problems solved by technology

In the current engine cylinder block, there are common problems in the inside of the engine crankcase, the cylinder head and the valve chamber cover. The flow direction is not reasonable and so on.

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