4results about "Drip lubrication" patented technology

The invention discloses a linear internal combustion hybrid power system oil stirring splash lubrication device and an adjustable oil supply method, the linear internal combustion hybrid power system oil stirring splash lubrication device comprises a pressure bearing and a motion shaft which are located between a linear motor and a combustion end of a linear internal combustion power system, the motion shaft does reciprocating linear motion after being stressed on the two sides, and the pressure bearing supports and guides the motion shaft; an oil storage tank is installed at the top of the pressure-bearing bearing, an oil injection pipe is formed at the bottom of the oil storage tank, an oil storage groove is formed in the pressure-bearing bearing, and an oil inlet cavity is formed in the pressure-bearing bearing. The moving shaft is supported, guided and lubricated through the pressure-bearing bearing, the oil storage tank is integrally arranged on the pressure-bearing bearing, reciprocating linear motion of the moving shaft is converted into reciprocating rotating motion of the oil stirring pieces, qualitative adjustment of the lubricating oil amount is achieved through height change of the slope adjusting plate, the overall structure is compact, and the operation is convenient. The axial space of the linear internal combustion power system is not occupied, external energy supply is not needed, the problem of oil-free lubrication friction abrasion of a bearing of the power system is ingeniously solved, and the structural stability of the linear internal combustion power system can be improved.

To provide a cylinder head for an internal combustion engine having an aggregated exhaust port, which can improve the circulation property of oil by allowing oil introduced into a dynamic valve chamber to easily flow to an oil return hole.SOLUTION: In a cylinder head 4, an upper wall 19a of an exhaust upper-side water jacket 19 is inclined so that a distance between a lower face 4f of the cylinder head 4 and itself increases as it goes toward an oil return hole 4c from sides of combustion chamber ceiling walls 8A, 8B, 8C in a fore-and-aft direction L2 intersecting with a cylinder row direction L1. The cylinder head 4 has a recess 23 which is formed by recessing the upper wall 19a of the exhaust upper-side water jacket 19 downward, and the recess 23 has a bottom face 23a which is substantially parallel with the lower face 4f of the cylinder head 4 and into which the oil return hole 4c is open. The bottom face 23a extends to the sides of the combustion chamber ceiling walls 8A, 8B, 8C from the oil return hole 4c.SELECTED DRAWING: Figure 6

The application provides a motorcycle camshaft lubricating structure and belongs to the technical field of motorcycles. The motorcycle camshaft lubricating structure solves the problem of insufficient working stability of the existing motorcycle camshaft decompression structure. The motorcycle camshaft lubricating structure comprises a oil dripping protrusion arranged on a cylinder head, the side of an exhaust cam facing a flyweight is a mounting surface, and a boss portion is integrally formed on the mounting surface; the oil dripping protrusion faces the boss portion and the boss portion is below the oil dripping protrusion; an extension portion is integrally formed on one side of the boss portion; a mounting through hole is formed in the extension portion; an oil passing gap is formed between the extension portion and the mounting surface; one end of the flyweight is connected with a pin shaft inserted into the mounting through hole; an installation gap is formed on the other side of the boss portion on the camshaft; and a decompression pin is arranged in the installation gap. The motorcycle camshaft lubricating structure can ensure that the camshaft decompression structure of the motorcycle has high working stability, has the advantages of low improvement cost, and is suitable for wide use and popularization.

The invention discloses an immersion type double-pump partition drip lubrication system of an aviation rotor engine for an unmanned aerial vehicle, and belongs to the field of aviation rotor engines. The lubricating system comprises a bearing lubricating subsystem and a cylinder body lubricating subsystem, the bearing lubricating subsystem pumps lubricating oil in a first lubricating oil tank into bearing lubricating points through a first electric lubricating oil pump, and the cylinder body lubricating subsystem pumps lubricating oil in a second lubricating oil tank into cylinder body lubricating points through a second electric lubricating oil pump. The lubricating oil in the two oil tanks can cool the immersed lubricating oil pump at the same time. According to the lubrication system, partition lubrication is conducted on the aviation rotor engine bearing and the cylinder body, precise lubrication of key hot spots and friction pairs of the rotor engine is achieved in cooperation with arrangement of all lubrication points, and different lubrication requirements of the aviation rotor engine bearing and the cylinder body are met; and the problem that a traditional lubricating system is difficult to adapt to the aviation rotor engine is solved due to the strict requirements of the aviation rotor engine for the unmanned aerial vehicle on weight, size and reliability.