CN210178480U - Roller type piston of internal combustion engine - Google Patents
Roller type piston of internal combustion engine Download PDFInfo
- Publication number
- CN210178480U CN210178480U CN201920726372.0U CN201920726372U CN210178480U CN 210178480 U CN210178480 U CN 210178480U CN 201920726372 U CN201920726372 U CN 201920726372U CN 210178480 U CN210178480 U CN 210178480U
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- piston
- cylinder
- internal combustion
- combustion engine
- roller
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- 238000002485 combustion reaction Methods 0.000 title claims abstract description 33
- 239000010687 lubricating oil Substances 0.000 claims description 4
- 238000005096 rolling process Methods 0.000 abstract description 14
- 238000005461 lubrication Methods 0.000 abstract description 13
- 230000001050 lubricating effect Effects 0.000 abstract 1
- 239000003921 oil Substances 0.000 description 17
- 230000000694 effects Effects 0.000 description 7
- 239000010705 motor oil Substances 0.000 description 7
- 238000000227 grinding Methods 0.000 description 5
- 239000000463 material Substances 0.000 description 5
- 238000010586 diagram Methods 0.000 description 3
- 230000002035 prolonged effect Effects 0.000 description 3
- 238000005299 abrasion Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000009736 wetting Methods 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 230000009969 flowable effect Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000003801 milling Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
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- Pistons, Piston Rings, And Cylinders (AREA)
Abstract
The utility model discloses a roller type piston of an internal combustion engine, which comprises a cylinder, a piston and a crankshaft, wherein the piston is arranged in the cylinder wall of the cylinder in a matching way, a slide block is arranged in an inner chute of the piston, rollers are arranged at the upper end and the lower end of the slide block, and a connecting rod is movably arranged at the middle position of the joint with the cylinder wall, the sliding friction of the existing piston and a cylinder sleeve is improved into a rolling and sliding motion mode by adding the rollers, thereby greatly reducing the friction resistance, improving the output efficiency of the internal combustion engine, prolonging the service life, improving the reliability, changing the sliding friction of poor lubrication between the piston and the cylinder sleeve into the rolling friction of the rollers, fully lubricating a roller shaft, the slide block and the corresponding chutes, and greatly improving the output efficiency and the service life of the internal combustion engine under the working condition environment between the existing piston and the cylinder sleeve, is suitable for refitting all the existing internal combustion engines, and has great market potential.
Description
Technical Field
The utility model relates to an internal-combustion engine field, in particular to internal-combustion engine roller type piston.
Background
The piston ring-cylinder sleeve is used as a pair of most important friction pairs in the internal combustion engine, has great influence on the dynamic property, the reliability and the durability of the engine, the abrasion of the piston ring-cylinder sleeve directly influences the work of the engine and also influences the mechanical efficiency of the engine, and the data shows that 10-20% of combustion energy of the internal combustion engine is consumed in mechanical loss, and the mechanical loss of the internal combustion engine mainly consists of five parts; friction loss between the piston and piston ring and cylinder liner; crankshaft linkages and fluid friction losses; power loss to drive the attachment; valve train friction losses and pump losses,
in addition, because the existing cylinder sleeve of the internal combustion engine is worn into an oval shape by a circle after being used for a period of time under the action of the positive pressure F3, the cylinder needs to be bored so as to recover the roundness, because the positive pressure F3 exists between a piston and a cylinder, the working condition becomes worse, and the engine oil with higher viscosity is used for reducing the wear so as to ensure the lubrication reliability. The problem brought by the viscosity increase of the engine oil is that the pump loss of the engine oil pump increases the power consumption, and the additional viscosity resistance is brought to the whole internal combustion engine for overcoming the viscosity of the engine oil.
Summarizing, the reasons for the total frictional resistance of the piston in the cylinder are: 1. the piston ring and the oil ring generate a tension force, 2, and the piston generates a positive pressure F3 under the action of the connecting rod; 3. poor lubrication, by analysis of the prior art: 2. 3 items account for most, the utility model discloses solve the utility model to 2, 3 problems, for this reason, we provide an internal-combustion engine roller type piston.
SUMMERY OF THE UTILITY MODEL
The main object of the present invention is to provide a roller piston for an internal combustion engine, which can effectively solve the problems of the prior art.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
the roller type piston of the internal combustion engine comprises an air cylinder, a piston and a crankshaft, wherein the piston is arranged in the air cylinder wall of the air cylinder in a matching mode, a sliding block is arranged in a sliding groove in the piston, rollers are arranged at the upper end and the lower end of the sliding block, a connecting rod is movably arranged at the middle part of the sliding block, which is attached to the air cylinder wall, and is connected with the crankshaft through the connecting rod, one end of the crankshaft is movably connected with the connecting rod, and the connecting rod drives the crankshaft to conduct circular motion.
Preferably, the central axis of the piston is located on the same axis as the central end of the crankshaft which performs circular motion.
Preferably, the connecting rod is connected with the sliding block in a joint type manner, and the connecting rod is movably connected with the crankshaft.
Preferably, the two rollers are assembled at the upper end and the lower end of the sliding block, and the surfaces of the rollers are mutually attached to the cylinder wall of the cylinder.
Preferably, the two rollers are assembled at the upper end and the lower end of the sliding block, and the surfaces of the rollers are mutually attached to the cylinder wall of the cylinder.
Preferably, in the same plane, the distance from the roller to the upper surface and the lower surface of the piston is equal, and the value of the distance is the thickness of a gap between the surface of the piston and the inner wall of the cylinder, and the gap is provided with a lubricating oil film.
Compared with the prior art, the utility model provides an internal-combustion engine roller type piston has as follows
Has the advantages that:
1. the sliding friction between the existing piston and the cylinder sleeve is improved into a rolling and sliding motion mode by adding a roller, so that the friction resistance is greatly reduced, and the output efficiency of the internal combustion engine is improved;
2. the sliding friction of poor lubrication between the piston and the cylinder sleeve is changed into the rolling friction of the roller, and the roller shaft and the sliding block as well as the sliding block and the corresponding sliding chute are fully lubricated, so that the working condition environment between the piston and the cylinder sleeve is greatly improved;
3. through setting up other several kinds of connected modes of gyro wheel and piston, also can play the effect of reducing friction equally, with the direct dress of gyro wheel on the piston side, install the gyro wheel in four directions in the piston cross-section, or use the sliding frame structure, the diameter of gyro wheel can be made according to the size of piston diameter, if the great mountable ball bearing of the diameter of gyro wheel further reduces frictional resistance.
The parts of the device not involved are the same as or can be implemented using prior art.
Drawings
FIG. 1 is a schematic diagram of a piston of a conventional internal combustion engine;
fig. 2 is a schematic diagram of the overall structure of a roller piston of an internal combustion engine according to the present invention;
fig. 3 and fig. 4 are schematic structural diagrams of another two connection modes of the roller and the piston of the roller type piston of the internal combustion engine according to the present invention.
In the figure: 1. a cylinder; 2. a piston; 3. a connecting rod; 4. a crankshaft; 5. a slider; 6. and a roller.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments.
In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.
Comparative example 1
As shown in figure 1, the friction resistance in the device is divided into two parts, namely a friction pair of a piston ring, an oil ring and a cylinder sleeve, and a friction pair between a piston and a cylinder sleeve, wherein the tension of the piston ring and the oil ring is added with the positive pressure F2 generated by the piston under the action of a connecting rod, F2 is the result of decomposition of a force F at an angle of α between the piston and the connecting rod, namely:
F2＝tagαF
f is the gas pressure of the top surface of the piston
And F2 forms a positive pressure F3 with equal and opposite directions, and the frictional resistance caused by F3 pressing the piston tightly on the inner wall of the cylinder is the main part.
When the friction force is calculated, whether the friction force is sliding friction force or static friction force is judged firstly, and then the friction force is calculated by a corresponding method.
The calculation formula of the sliding friction force is as follows: f is equal to the number of the particles (mu N),
mu is a dynamic friction factor (for example, where mu is an aluminum material for both the piston and the cylinder, the value of mu is 1.4 under dry friction conditions and 0.2 under lubricated friction conditions)
N is positive pressure (where N is equal to F3)
Sliding friction force: occurs between two objects that are in contact with each other and slide relative to each other, and impedes the force of relative sliding between them.
The direction of the friction force is opposite to the direction of the relative movement or the relative movement trend direction of the object, but not the same as the movement direction of the object.
Example 2
As shown in fig. 2, a roller type piston of an internal combustion engine comprises a cylinder 1, a piston 2 and a crankshaft 4, wherein the piston 2 is arranged in the cylinder wall of the cylinder 1 in a matching manner, a sliding block 5 is arranged in an inner sliding groove of the piston 2, rollers 6 are arranged at the upper end and the lower end of the sliding block 5, a connecting rod 3 is movably arranged at the middle part attached to the cylinder wall and is connected with the crankshaft 4 by arranging the connecting rod 3, one end of the crankshaft 4 is movably connected with the connecting rod 3, and the connecting rod 3 drives the crankshaft 4 to perform circular motion.
As shown in fig. 2, the central axis of the piston 2 is located on the same axis as the central end of the crankshaft 4 that makes a circular motion.
As shown in fig. 2, the connecting rod 3 and the slider 5 are connected by a joint, the connecting rod 3 and the crankshaft 4 are movably connected, and the connecting rod 3 can deviate at a certain angle at the connecting end with the slider 5 in the same plane so as to cooperate with the connecting rod 3 to drive the crankshaft 4 to rotate.
The sliding friction between the existing piston 2 and the cylinder sleeve is improved to a rolling and sliding motion mode formed by adding the roller 6, so that the friction resistance is greatly reduced, and the output efficiency of the internal combustion engine is improved.
As shown in fig. 2, two rollers 6 are assembled at the upper and lower ends of the slider 5, and the surfaces of the rollers 6 are attached to the cylinder wall of the cylinder 1.
As shown in fig. 2, in the same plane, the distance from the roller 6 to the upper and lower surfaces of the piston 2 is equal, and the value of the distance is the thickness of the gap between the surface of the piston 2 and the inner wall of the cylinder 1, and the gap is provided with a lubricating oil film.
The sliding friction of poor lubrication between the piston 2 and the cylinder sleeve is changed into the rolling friction of the roller 6, and the roller shaft and the sliding block 5 as well as the sliding block 5 and the corresponding sliding chute are fully lubricated, so that the working condition environment between the piston 2 and the cylinder sleeve is greatly improved.
The utility model discloses slide 5 that is located piston 2 can use ordinary planer, milling machine to process, general machining factory all can give birth to, and equipment cost descends by a wide margin with the cost of labor, under this condition, can obtain 30% to 50% promotion space, can say that the improvement is little, can jump greatly, and simultaneously, current internal-combustion engine cylinder cover is because under the effect of F2, F3 pressure, uses a period after, becomes an "oval" shape by circular. Consequently, thereby the cylinder uses a period after, just need carry out the boring jar and resume the circularity, guarantees the gas tightness, the utility model discloses because increased the gyro wheel, become rolling friction with sliding friction, very reduce the wearing and tearing of cylinder liner, prolonged the life of cylinder liner and piston, the piston ring, the oil ring life-span has also all obtained improvement by a wide margin, has also prolonged the overhaul interval of internal-combustion engine simultaneously.
Because of the support of the roller, lubricating oil with lower viscosity can be used. It may bring the following benefits:
firstly, reducing resistance loss of an oil pump;
secondly, the wetting property of the engine oil is improved, and after the wetting property of the engine oil is improved, carbon deposition of the piston ring is not easy to form, so that the air tightness of the piston ring is improved,
the strain of the cylinder is positively related to the size of F3, and the strain is deeper when the positive pressure applied to the cylinder sleeve is larger, so that the strain cannot be generated by using the roller. The roller is used for smashing the grinding materials on the inner wall of the cylinder, and the surface of the roller is smashed into a shallow pit. The engine oil is flowable and flushable under the action of the pressure of the oil pump. The grinding material is suddenly dropped into the friction matching surface, the oil pump has no grinding material after passing through the oil filter, in addition, the new oil is replaced, the broken grinding material can be taken out, at the moment, the small shallow pit is lubricated by clean oil, the grinding effect is realized through the repeated motion friction with the piston, the small shallow pit can be automatically repaired, and the oil film on the shallow pit has the filling effect to improve the air tightness. If the roller is not arranged, the piston and the cylinder are in a sliding relationship, the piston tightly presses the abrasive to the inner surface of the cylinder under the action of F3, and under the high-speed reciprocating motion of the piston, the abrasive strains the cylinder sleeve, and the strain depth of the cylinder sleeve is determined by the force of F3 and the diameter of the abrasive. If the strain length exceeds the width of the air ring, air leakage of the cylinder is caused, which is one of the reasons that the failure of the modern internal combustion engine is high, the reliability is poor and the heat efficiency is low.
Example 3
Fig. 3-4 show other connection modes of the roller and the piston.
Through setting up other several kinds of connected modes of gyro wheel and piston, also can play the effect of reducing friction, 1, as shown in fig. 3, all install gyro wheel 6 in n directions of piston 2 circular cross section. 2. As shown in fig. 4, the diameter of the roller 6 can be sized according to the chord length of the circular section of the piston 2 using the slide frame type structure, and the roller 6 is directly installed in the piston 2. If the diameter of the roller 6 is larger, a ball bearing can be installed to further reduce the frictional resistance.
It should be noted that the utility model relates to an internal-combustion engine roller type piston adopts the combination mode of gyro wheel 6 and slider 5, and slider 5 freely slides and drives gyro wheel 6 and the contact of cylinder jacket and alleviate the sliding friction resistance between piston 2 and the cylinder 1 in the spout of piston 2.
The sliding friction of poor lubrication between the piston 2 and the cylinder 1 is changed into the rolling friction of the roller 6, the roller shaft and the slide block 5 are fully lubricated, as shown in figures 1 and 2, the force F3 is supported by the roller 6, the generated sliding friction (resistance is converted into rolling friction) of the roller 6 and the inner wall of the cylinder, F3 is the positive pressure F3 generated under the action of the piston 2 and the connecting rod 3, F3 is the force resolution of α angle between the piston 2 and the connecting rod 3,
no matter the lubrication of the sliding block 5 and the sliding block groove or the lubrication of the roller shaft is fully ensured, so that the existing poor sliding friction is changed into the rolling friction with good lubrication and guarantee, the high-temperature and high-pressure gas in the cylinder 1 acts on the top surface of the piston 2 to generate pressure, the pressure is transmitted to the sliding block 5 and the connecting rod 3 movably connected with the sliding block 5 through the piston 2, the pressure is decomposed into acting forces in three directions under the action of an angle α, as shown in figure 1, F1 is the acting force in the direction of the connecting rod 3, the acting force is used for driving the crankshaft 4 to rotate, the acting force of F2 is equal to the positive pressure F3 in size and opposite in direction, and due to the action of F2, the sliding block 5 is pressed towards the cylinder 1 along with the roller 6, so that the existing poor sliding lubrication friction between the piston 2 and the cylinder sleeve is changed into a sliding friction compound movement mode mainly based on the rolling friction of the roller,
the sliding of the slide block 5 in the slide groove refers to the sliding relationship between the piston and the force F3, and the purpose of changing sliding friction into rolling friction is realized by guiding the force F3 to the cylinder wall through the slide block 5 and the roller 6 to make the roller 6 contact with the cylinder wall. The position of the slide block 5 is relatively fixed, because the slide block 5 is connected with the crankshaft 4 of the connecting rod 3, the rotating center of the crankshaft 4 is fixed, the crankshaft end is a fixed end, and the piston end is a free end. In order to ensure that the piston 2 is stably transited at the upper dead point and the lower dead point in the cylinder sleeve, the central axes of the slide block 5 and the connecting rod 3 are coincident with the central axis of the piston 2 as much as possible.
Because the working condition environment of the slide block 5 and the roller 6 is greatly improved compared with the working condition environment between the existing piston 2 and the cylinder sleeve, the lubrication of the slide block 5 and a slide way and the lubrication of a roller shaft are fully ensured, the existing poor sliding friction is changed into rolling friction with good lubrication and guarantee, because the additional pressure and resistance formed by the force F3 applied to the piston ring and the oil ring by the existing piston disappear under the support of the roller 6, the deformation probability is greatly reduced during reciprocating motion, the working condition environment of the gas ring and the oil ring is improved by the gas and oil seal of the piston ring and the oil ring by the ideal design tension of the piston ring and the oil ring, the sealing effect of gas and oil is improved, the power output is indirectly improved, the abrasion of each component in the cylinder sleeve is reduced, the service life of each component is prolonged, the slide block 5 carries the roller 6 to move upwards under the action of the connecting rod 3 when the crankshaft 4 runs to a negative half cycle, the contact of the roller 6 with the upper wall of the cylinder produces a rolling effect,
fig. 3 and 4 show several other ways of connecting the sliding frame 7, the sliding block 5 and the piston 2, and in fig. 3, the roller 6 is directly arranged in the piston 2. The roller 6 is installed in several directions of the circular section of the piston 2, or in fig. 4, a sliding frame structure is used, the diameter of the roller 6 can be manufactured according to the chord length of the circular section of the piston 2, and if the diameter of the roller 6 is larger, a ball bearing can be installed to further reduce the frictional resistance.
The basic principles and the main features of the invention and the features of the invention have been shown and described above. It will be understood by those skilled in the art that the present invention is not limited to the above embodiments, and that the foregoing embodiments and descriptions are provided only to illustrate the principles of the present invention without departing from the spirit and scope of the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (5)
1. A roller piston of an internal combustion engine, comprising a cylinder (1), a piston (2) and a crankshaft (4), characterized in that: the piston (2) is arranged in the cylinder wall of the cylinder (1) in a matched manner, a sliding block (5) is arranged in an inner sliding groove of the piston (2), rollers (6) are arranged at the upper end and the lower end of the sliding block (5), a connecting rod (3) is movably arranged at the middle position of the joint of the upper end and the lower end of the sliding block (5) and the cylinder wall, and is connected with the crankshaft (4) through the connecting rod (3), one end of the crankshaft (4) is movably connected with the connecting rod (3), and the connecting rod (3) drives the crankshaft (4) to perform circular motion.
2. An internal combustion engine roller piston according to claim 1, wherein: the central axis of the piston (2) and the central end of the crankshaft (4) which do circular motion are positioned on the same axis.
3. An internal combustion engine roller piston according to claim 1, wherein: the connecting rod (3) is connected with the sliding block (5) in a joint type, and the connecting rod (3) is movably connected with the crankshaft (4).
4. An internal combustion engine roller piston according to claim 1, wherein: the two rollers (6) are assembled at the upper end and the lower end of the sliding block (5), and the surfaces of the rollers (6) are mutually attached to the cylinder wall of the cylinder (1).
5. An internal combustion engine roller piston according to claim 1, wherein: in the same plane, the distances from the roller (6) to the upper surface and the lower surface of the piston (2) are equal, the numerical value of the distances is the thickness of a gap between the surface of the piston (2) and the inner wall of the cylinder (1), and a lubricating oil film is arranged in the gap.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920726372.0U CN210178480U (en) | 2019-05-21 | 2019-05-21 | Roller type piston of internal combustion engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920726372.0U CN210178480U (en) | 2019-05-21 | 2019-05-21 | Roller type piston of internal combustion engine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210178480U true CN210178480U (en) | 2020-03-24 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920726372.0U Expired - Fee Related CN210178480U (en) | 2019-05-21 | 2019-05-21 | Roller type piston of internal combustion engine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210178480U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110043389A (en) * | 2019-05-21 | 2019-07-23 | 顾声彪 | A kind of internal combustion engine roller type piston |
-
2019
- 2019-05-21 CN CN201920726372.0U patent/CN210178480U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110043389A (en) * | 2019-05-21 | 2019-07-23 | 顾声彪 | A kind of internal combustion engine roller type piston |
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Legal Events
| Date | Code | Title | Description |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20210125 Address after: 628017 no.24-6, office building 3, Wanda Plaza (West District), Wanyuan New District, Dongba office, Lizhou District, Guangyuan City, Sichuan Province Patentee after: Guangyuan Sound Machine Technology Co.,Ltd. Address before: No. 25, building 31, Yuejin building, shangmaying, Jintai District, Baoji City, Shaanxi Province Patentee before: Gu Shengbiao |
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| TR01 | Transfer of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200324 |
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| CF01 | Termination of patent right due to non-payment of annual fee |