Active lubrication valve mechanism and engine

Abstract

The invention relates to an active lubrication valve mechanism and an engine. The active lubrication valve mechanism comprises a cam shaft and a tappet, wherein the cam shaft comprises a cam shaft body and at least one cam; an oil guide inclined surface is arranged on the outer circle surface of the cam shaft body; and when the cam shaft rotates, the oil guide inclined surface guides lubricating oil on the oil guide inclined surface to climb to the radial surface of the corresponding cam. The oil guide inclined surface is arranged on the cam shaft body, and when the cam shaft rotates, the oilguide inclined surface can guide the lubricating oil to flow to the cam, so that a climbing effect is achieved; and the structure improves a lubrication mechanism at the matching position of the cam shaft and the tappet, provides conditions for forming sufficient lubrication, reduces the abrasion of the cam shaft and the tappet, improves the operation precision, reduces the operation noise, facilitates energy conservation and consumption reduction, and is simple in structure and convenient to manufacture.

Description

technical field [0001] The invention relates to the field of engines, in particular to an actively lubricated gas distribution mechanism and an engine. Background technique [0002] The lubrication system is used to continuously deliver a sufficient amount of clean lubricating oil at an appropriate temperature to the friction surfaces of moving parts when the engine is working, and form an oil film between the friction surfaces to reduce friction resistance, power consumption and machine parts. Reduced wear to improve reliability and durability of engine operation. For some open friction parts of the engine, unlike bearings, which can form sufficient lubrication, it is difficult to form an oil film with an ideal thickness. [0003] In the prior art, the cooperation between the camshaft and the tappet in the gas distribution mechanism belongs to the above-mentioned situation, that is, when the flat-bottomed tappet cooperates with the cam, the pressure on the contact surface ...

AI Technical Summary

Problems solved by technology

[0004] Although the camshaft has a dedicated oil passage, the oil hole at the base circle will provide lubricating oil to form a bearing lubricating oil film, but due to the high working pressure between the cam and the flat-bottomed tappet, there point), the bearing lubricating oil film is difficult to form, resulting in the situation that the bearing lubricating oil film on the entire cam is thicker at the base circle and thinner at the tip of the peach

In severe cases, the load-bearing oil film cannot be formed at the tip of the peach, and the original oil film is squeezed and broken, causing a sharp increase in wear

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