Actively lubricated valvetrain and engine
A gas distribution mechanism and active technology, applied in the direction of machine/engine, engine components, engine lubrication, etc., can solve the problems of high working pressure, thick base circle of bearing lubricating oil film, difficulty of bearing lubricating oil film, etc., to reduce wear, Conducive to the effect of saving energy, reducing consumption and improving operation accuracy
Active Publication Date: 2021-08-27
CHONGQING LONCIN MOTOR +1
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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
Method used
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[0027] figure 1 It is a schematic diagram of the three-dimensional structure of the camshaft of the present invention, figure 2 It is a three-dimensional structure diagram of the gas distribution mechanism of the present invention, image 3 It is a sectional view of the gas distribution mechanism of the present invention, Figure 4 It is a top view of the valve train of the present invention, Figure 5 It is the general diagram of the engine of the present invention, as shown in the figure: the actively lubricated valve train of the present embodiment includes a camshaft and a tappet 6, and the camshaft includes a camshaft body 1 and at least one cam 2, and the tappet The column and the cam of the camshaft can be driven to contact and cooperate. The outer surface of the camshaft body 1 (referring to the shaft section other than the cam) is provided with an oil guide slope 3, and the oil guide slope 3 is rotated when the camshaft rotates. guide the lubricating oil on the oi...
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The invention relates to an actively lubricated gas distribution mechanism and an engine, including a camshaft and a tappet. The camshaft includes a camshaft body and at least one cam. When the shaft rotates, the oil guide slope guides the lubricating oil on the oil guide slope to climb to the corresponding cam radial surface; the present invention is provided with an oil guide slope on the camshaft body, and when the camshaft rotates, the oil guide slope can guide The lubricating oil flows to the cam, that is, it has a climbing effect; this structure improves the lubrication mechanism of the joint between the camshaft and the tappet, provides conditions for sufficient lubrication, reduces the wear of the camshaft and the tappet, improves the running accuracy, and thus reduces the running noise. It is beneficial to energy saving and consumption reduction, and the structure is simple 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 ...
Claims
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IPC IPC(8): F01M9/10F01L1/047
CPCF01L1/047F01M9/10F01M9/104
Inventor 张合勇周裕林张瑜付强罗浩
Owner CHONGQING LONCIN MOTOR