Tappet with oil guiding function, valve train and engine

Abstract

The invention relates to a tappet with an oil guiding function, a gas distribution mechanism and an engine. The tappet is provided with a vertical oil seepage hole through the longitudinal direction; the tappet of the present invention is provided with a vertical oil seepage hole, and the tappet upper The lubricating oil (splashing, etc.) will infiltrate between the tappet end face and the cam through the oil seepage hole, that is, it can guide the lubricating oil to flow to the cam; Conditions are provided, the wear of the camshaft and the tappet is reduced, the running precision is improved, thereby reducing the running noise, which is beneficial to energy saving and consumption reduction, and the structure is simple and easy to manufacture.

Description

technical field [0001] The invention relates to the field of engines, in particular to a tappet with an oil guiding function, a valve 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. [0003] 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. [0004] 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 ...

AI Technical Summary

Problems solved by technology

[0005] Although the camshaft has a dedicated oil passage, the oil hole at the base circle will provide lubricating oil to form a load-carrying lubricating oil film, but because the working pressure between the cam and the flat-bottomed tappet is very high, the camshaft will be in the ascending section of the cam and even at the tip of the peach (high 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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