JP3066973U - Two stroke cylinder - Google Patents

Abstract

(57) [Summary] [PROBLEMS] To provide a two-stroke cylinder capable of improving exhaust gas problems and improving engine efficiency. SOLUTION: In a two-stroke cylinder having a compression chamber composed of a cylinder wall, a gas passage provided in the cylinder wall, an exhaust port, and a fin on the outer periphery, an annular shape is formed in the cylinder wall below the gas passage of the cylinder wall. An inner passage having a wall is provided, a plurality of holes are provided in a cylinder wall provided with the inner passage, and at least one set of lubrication ports is provided at an appropriate position corresponding to the inner passage outside the cylinder. A conduit for introducing lubricating oil is connected to the oil inlet.

Description

[Detailed description of the invention]

[0001]

[Technical field to which the invention belongs]

 The present invention relates to a type of two-stroke cylinder, and more particularly to a high-efficiency cylinder that separates lubricating oil and fuel oil to operate each of them most efficiently, and that can reduce the emission of carbon monoxide and hydrocarbon compounds. .

[0002]

[Prior art]

 As shown in FIG. 1, the conventional two-stroke cylinder includes a compression chamber 3 formed by a cylinder wall 2, a gas passage 6 provided in the cylinder wall 2, an exhaust port 5, and a fin 4 on the outer periphery. The well-known cylinder 1 does not have a structure for separating fuel oil and lubricating oil. Therefore, the oil injected into the compression chamber 3 is a mixed oil of lubricating oil and fuel oil, and therefore a large amount of carbon monoxide due to incomplete combustion. And the release of hydrocarbon compounds. In addition, the well-known cylinder 1 generates so-called cylinder shrinkage when operated continuously for a long period of time. A situation could arise.

[0003]

[Problems to be solved by the invention]

 In this invention, an independent lubricating oil introduction structure is provided in the cylinder, and the fuel oil and the lubricating oil perform their functions, respectively, and a large amount of carbon monoxide and hydrocarbon compounds are generated by the mixed combustion of the fuel oil and the lubricating oil. To prevent the cylinder from shrinking, prevent the oil discharge hole using pistons, and prevent the motorcycle that has not been used for a long time from becoming inoperable due to the filling of the crank box with the lubricating oil. Is to do so. The next task of the present invention is to make the piston movement smooth and to reduce the abrasion and noise of the cylinder wall to a minimum, and to greatly increase the operation efficiency.

[0004]

[Means for Solving the Problems]

 The invention of claim 1 is directed to a two-stroke cylinder having a compression chamber composed of a cylinder wall, a gas passage provided in the cylinder wall, an exhaust port, and a fin on the outer periphery. An inner passage having an annular wall is provided therein, and a plurality of holes are provided in a cylinder wall provided with the inner passage, and at least one set of lubrication is provided at an appropriate position corresponding to the inner passage outside the cylinder. The two-stroke cylinder is characterized in that a port is provided and a conduit for introducing lubricating oil is connected to the lubrication port. According to a second aspect of the present invention, there is provided a two-stroke cylinder according to the first aspect, wherein an annular oil groove is provided on a surface of the cylinder wall where the inner passage is provided. According to a third aspect of the present invention, there is provided a two-stroke cylinder according to the first aspect, wherein a corrugated oil groove is provided on a surface of the cylinder wall where the inner passage is provided. The invention according to claim 4 is the two-stroke cylinder according to claim 1, wherein a plurality of vertically downward oil guide grooves are provided on a surface of the cylinder wall where the inner passage is provided. .

[0005]

[Embodiment of the invention]

 The present invention provides a compression chamber formed of a cylinder wall, a gas passage provided in the cylinder wall, an exhaust port and a fin on the outer periphery, and an inner passage having an annular wall in the cylinder wall below the gas passage below the cylinder wall. A plurality of holes are provided in the cylinder wall of the portion provided in the inner passage, or an annular, corrugated oil groove or a plurality of vertically downward oil guide grooves provided in the cylinder wall surface. In combination, at least one set of lubrication ports is provided at an appropriate position corresponding to the internal passage outside the cylinder, and is used to assemble the conduit and introduce lubricating oil. When the cylinder operates, fuel oil and lubricating oil play their roles, respectively, and lubricating oil is injected directly into the lower half of the cylinder to keep the piston and piston ring lubricated, and lubricating oil is applied to the crankcase bearing. Since it is close to the crank rod, a small amount of lubricating oil supply can reduce the engine noise and provide the effect of smoothly running the engine and extending the service life.

[0006]

【Example】

 As shown in FIGS. 2 and 3, the present invention comprises a compression chamber 3 composed of a well-known cylinder wall 2 in a cylinder wall 1, a gas passage 6 provided in the cylinder wall 2, an exhaust port 5, and an outer periphery. In the two-stroke cylinder provided with the fin 4, an inner passage 7 having an annular wall provided in the cylinder wall 2 is provided below the gas passage 6 of the cylinder wall 2, and the inner passage 7 of the cylinder wall 2 is provided. A plurality of holes 8 are provided in the portion provided, and at least one set of lubrication ports 9 is provided at an appropriate position corresponding to the internal passage 7 outside the cylinder 1 so as to assemble the conduit 10 and introduce lubricating oil. It is characterized by being done.

The piston installed in the cylinder 1 described above operates in the compression chamber 3 formed by the upper and lower stop points A and B in the developed view, and the lubricating oil used in the two strokes is located in the lower part of the compression chamber 3. It flows through passage 7. During the intake, explosion and exhaust on the stroke, the lubricating oil is separated from the lubricating oil and plays its role, that is, the vertical movement of the piston causes the fuel in the compression chamber 3 to enter, ignite, explode and exhaust, and the movement of the piston Causes the lubricating oil flowing downward to lubricate from the second piston ring portion of the piston 11 to the compression chamber through the oil discharge hole, whereby the fuel oil and the lubricating oil are not mixed, and the cylinder wall is effectively prevented from being mixed. 2 and the following test results can be obtained. Carbon monoxide 0.37 Carbohydrates 2010 Carbon dioxide 11.6 A / F 16.3 The above results are lower than the government's quaternary emission standards, and the piston movement is fairly smooth and the cylinder wall The abrasion and noise levels are significantly reduced, while horsepower can be increased by at least 10 percent.

FIGS. 4 and 5 show embodiments 2 and 3 of the present invention. According to the above-described structure, the annular oil groove 71 or the corrugated oil groove 73 is separately provided on the surface of the cylinder wall 2 in the inner passage 7 (see FIG. 6. The oil inlet 9 and the annular oil groove 71, the corrugated oil groove 73). When the highest point of the piston is located at the lower stop point of the piston, a position approximately 5 mm below the second piston ring is appropriate), or a plurality of vertical downward oil guide grooves 72 are provided, whereby the cylinder wall formed of lubricating oil is provided. 2 more reliably and effectively, and achieve the effect of separation from fuel oil to increase the operating efficiency of the cylinder.

[0009]

[Effect of the invention]

 The structure of the present invention allows the lubricating oil to enter the cylinder and be blocked by the piston below the gas passage, thereby preventing the lubricating oil from entering the crankbox. This prevents the situation where the lubricating oil is filled to a high degree, achieves complete combustion without the presence of a large amount of lubricating oil in the compression chamber, and more effectively reduces the content of carbon monoxide and hydrocarbon compounds in the exhaust gas.

[0010] From the above, the two-stroke cylinder of the present invention can effectively achieve a value lower than the government's emission standard, improve engine operation efficiency and horsepower, have practicality and industrial utility value, and have novelty. It is a device having.

[Brief description of the drawings]

FIG. 1 is a structural view of a conventional two-stroke cylinder.

FIG. 2 is an external perspective view of the present invention.

FIG. 3 is a structural view of an embodiment of the present invention.

FIG. 4 is a structural view of a second embodiment of the present invention.

FIG. 5 is a structural view of a third embodiment of the present invention.

FIG. 6 is a structural view of a fourth embodiment of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Cylinder 2 Cylinder wall 3 Compression chamber 4 Fin 5 Exhaust port 6 Gas passage 7 Inner passage 8 Hole 9 Lubrication port 10 Pipe 11 Piston 71 Annular oil groove 72 Oil guide groove 73 Corrugated oil groove

Claims (4)

[Utility model registration claims] 1. A two-stroke cylinder having a compression chamber composed of a cylinder wall, a gas passage provided in the cylinder wall, an exhaust port, and a fin on the outer periphery. An inner passage having an annular wall is provided, a plurality of holes are provided in a cylinder wall provided with the inner passage, and at least one set of lubrication holes is provided at an appropriate position corresponding to the inner passage outside the cylinder. A two-stroke cylinder, wherein a conduit for introducing lubricating oil is connected to the oil inlet. 2. An annular oil groove is provided on a surface of a cylinder wall at a portion where the inner passage is provided.
The two-stroke cylinder according to the above. 3. A corrugated oil groove is provided on a surface of a cylinder wall at a portion where the inner passage is provided.
The two-stroke cylinder according to the above. 4. The two-stroke cylinder according to claim 1, wherein a plurality of vertically downward oil guide grooves are provided on a surface of the cylinder wall where the inner passage is provided.