Engine with novel oilway

Abstract

The invention aims at disclosing an engine with a novel oil line; the engine has simple structure and low cost, is lubricant and reliable and comprises an air cylinder cover, a bearing cover of a cam shaft which is fixed on the air cylinder cover by a positioning pin and a bolt, and a rocker shaft, a rocker, a hydraulic tappet and the cam shaft which are supported in the bearing cover of the cam shaft; particularly, the air cylinder cover is internally provided with a main oil-feeding pipeline which goes to a neck hole of a main shaft of the cam shaft and the middle position of the internal part of the bearing cover of the cam shaft from the air cylinder cover; the bearing cover of the cam shaft is internally provided with a main oil pipeline which is communicated with the main oil-feeding pipeline and the center installation hole of the rocker shaft, and multiple secondary oil pipelines which are communicated with the installation holes of the two sides of the rocker shaft and the neck hole of the secondary shaft of the cam shaft; the rocker shaft is internally provided with oil pipelines which are communicated with the center installation hole of the rocker shaft, the installation holes of the two sides and the installation holes of all the rockers; and the rocker is internally provided with the oil pipeline of the rocker which is communicated with the installation hole of the rocker and the internal part of the hydraulic tappet. The internal oil pipeline of the engine of the invention adopts the design of feeding the oil from the middle part, is easy to be processed and is lubricant and reliable.

Description

technical field [0001] The invention relates to an engine, specifically an overhead valve engine. Background technique [0002] The oil passage of the traditional overhead valve engine is to set a main oil passage through the engine cylinder head on the engine, through which the flow of lubricating oil is realized. The oil inlet hole of the main oil passage is set at one end of the cylinder head Such an engine has the following disadvantages: 1. Because the cylinder head is relatively long, it needs to be processed with a very long tool, so the requirements for the tool are high, the processing cost is high, and the processing technology of the main oil passage is complicated, which easily leads to the diameter of the holes at both ends. Inconsistent, it is difficult to ensure the balance of oil pressure at both ends; 2. The oil inlet is set at one end of the cylinder head, resulting in low oil pressure at the rear end of the oil circuit, and the oil pressure at the end of t...

AI Technical Summary

Problems solved by technology

[0002] The oil passage of the traditional overhead valve engine is to set a main oil passage through the engine cylinder head on the engine, through which the flow of lubricating oil is realized. The oil inlet hole of the main oil passage is set at one end of the cylinder head Such an engine has the following disadvantages: 1. Because the cylinder head is relatively long, it needs to be processed with a very long tool, so the requirements for the tool are high, the processing cost is high, and the processing technology of the main oil passage is complicated, which easily leads to the diameter of the holes at both ends. Inconsistent, it is difficult to ensure the balance of oil pressure at both ends; 2. The oil inlet is set at one end of the cylinder head, resulting in low oil pressure at the rear end of the oil circuit, and the oil pressure at the end of the oil circuit cannot be established in time, resulting in some work pieces not being received in time. Lubrication, and then appear abnormal wear, camshaft breakage and other safety hazards

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