CN210531007U - Forged steel piston - Google Patents
Forged steel piston Download PDFInfo
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- CN210531007U CN210531007U CN201821608603.XU CN201821608603U CN210531007U CN 210531007 U CN210531007 U CN 210531007U CN 201821608603 U CN201821608603 U CN 201821608603U CN 210531007 U CN210531007 U CN 210531007U
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Abstract
The utility model provides a novel forged steel piston, piston head, piston skirt portion and piston key seat including the cooperation setting, novel forged steel piston still includes: the grid structure is arranged below the head of the piston to form a piston skirt; the piston ring groove is sleeved on the outer side surface of the piston head; and the combustion chamber is arranged in the inward groove of the piston head. Through the technical scheme of the utility model, not only reduced the piston quality, increased heat radiating area, strengthened the cooling effect, reduced skirt portion and cylinder liner area of contact more effectively, effectively reduced friction loss.
Description
Technical Field
The utility model relates to a piston technical field particularly, relates to a novel forged steel piston.
Background
With the increasing development of engines, the mechanical load and the thermal load borne by an engine piston are higher and higher, and the light weight, the low friction and the strength of parts of the engine are paid high attention by enterprises. The steel piston has the advantages of high strength, small thermal expansion, low noise and the like, and is widely applied, and how to reduce the weight of the steel piston, reduce the friction of the piston and reduce the working temperature of the piston becomes a problem to be solved urgently.
In the related art, the conventional cooling oil cavity is usually formed by machining and molding an inner cooling oil cavity on the top of the piston or by laser welding or friction welding, and engine oil is used for forcibly spraying oil for cooling so as to reduce the working temperature of the piston, so that the following technical defects exist:
(1) steel pistons, while strong, are heavy.
(2) The cooling oil cavity has poor processing manufacturability, high processing difficulty, low efficiency and high cost.
(3) The cooling mode of the inner cooling oil cavity mainly depends on that high-pressure engine oil is sprayed out from a cooling nozzle arranged on the cylinder body and is sprayed into an inlet of the inner cooling oil cavity when the piston is at a lower dead point, and the oil inlet efficiency is not high because the nozzle is not in closed connection with the inner cooling oil cavity.
(4) The welded steel piston is easy to form flash at the welding position to block the inner cooling oil cavity, if the temperature of the top of the inner cooling oil cavity is too high, engine oil is coked, the inner cooling oil cavity is easy to block due to long-time coking accumulation, and cooling faults are easy to cause, so that the temperature of the top of the piston is further increased, and the piston is cracked and fails.
SUMMERY OF THE UTILITY MODEL
The present invention aims at least solving one of the technical problems existing in the prior art or the related art.
Therefore, the utility model discloses an aim at provides a novel forged steel piston.
In order to realize above-mentioned purpose, the technical scheme of the utility model provides a novel forged steel piston, including piston head, piston skirt portion and the piston pin boss that the cooperation set up, novel forged steel piston still includes: the grid structure is arranged below the head of the piston to form a piston skirt; the piston ring groove is sleeved on the outer side surface of the piston head; and the combustion chamber is arranged in the inward groove of the piston head.
In the scheme, the piston skirt part is formed by the grid mesh structure arranged below the piston head part, the structure of the piston skirt part can be utilized to carry out effective heat dissipation and cooling, the heat dissipation area is increased, the cooling effect is enhanced, the contact area between the piston skirt part and the cylinder sleeve is effectively reduced, the friction loss is effectively reduced, the design of an inner cooling oil cavity is not needed, the processing is convenient, the whole weight of the piston is reduced, the whole performance of the piston is improved, the lubricating oil on the cylinder wall is favorably scraped through the piston ring groove sleeved on the outer side surface of the piston head part, the loss of the lubricating oil is reduced, the effective combustion of fuel is favorably realized through the combustion chamber arranged in the inward groove of the piston head part, and the function of the piston is realized. The cost is reduced.
Specifically, the grid structure is determined according to the size of the piston and the change of the temperature field of the piston, the piston is cooled in a splashing mode, an inner cooling oil cavity does not need to be designed, and the problems that the inner cooling oil cavity is difficult to process, low in efficiency and high in cost are effectively solved.
Preferably, the grid structure comprises: the grid plates are arranged adjacently and are uniformly distributed in an array.
In the scheme, the grid mesh structure is formed by uniformly distributing a plurality of adjacently arranged grid pieces in an array mode, so that the weight of the piston is reduced while the heat dissipation area is increased, and the lengths of the grid pieces at different positions can be adjusted in an adaptive mode.
Preferably, the grid structure comprises: the density of the grid pieces distributed at the bottom of the combustion chamber is higher than that of the grid pieces distributed at other positions except the bottom of the combustion chamber.
In this scheme, through the grid piece density that distributes in the combustion chamber bottom be greater than the grid piece density that distributes in other positions except the combustion chamber bottom, when having reduced the weight of piston for the local heat radiating area that the temperature is high is big, has further promoted the radiating effect, and the length of the grid piece of different positions can the adaptability adjustment.
Preferably, the grid includes, but is not limited to, elongated, cylindrical, parallelogram, trapezoidal.
Preferably, the piston ring groove comprises two gas ring grooves and one oil ring groove, and the gas ring groove, the gas ring groove and the oil ring groove are sequentially arranged from top to bottom.
In this scheme, include twice gas ring groove and one oil ring groove through the piston ring groove, be gas ring groove, oil ring groove by the top down in proper order, be favorable to striking off the lubricating oil on the jar wall, reduce the loss of lubricating oil.
Preferably, be equipped with the piston pin hole on the piston pin seat, novel forged steel piston still includes: the oil storage tank is arranged above the top of the piston pin hole; the oilhole is located the top below of piston pin hole, and the oilhole sets up with the oil storage tank cooperation, and wherein, the oil storage tank carries received lubricating oil to the inside of piston pin hole along the oilhole.
In this scheme, can receive the lubricating oil that splashes or flow through the oil storage tank of the top of locating the piston pin hole, can cooperate with the oil storage tank through the oilhole of the top below of locating the piston pin hole, carry the inside of piston pin hole with the lubricating oil that the oil storage tank received, be favorable to the lubrication between piston pin hole and the piston pin, reduce because of the not enough piston pin hole interlock risk that leads to of lubricating degree.
Preferably, the number of the oil holes is four, the centers of the oil holes are perpendicular to the axis of the piston pin hole and are located on the top cylindrical surface of the piston pin seat, and the centers of the four oil holes are symmetrical about the center of the novel forged steel piston.
In this scheme, be four through the oilhole, the axis of the central perpendicular to piston pin hole of oilhole, and be located the top face of cylinder of piston pin seat, the central symmetry about novel forged steel piston of four oilholes has effectively ensured the lubrication of piston pin hole, has reduced the unnecessary waste of lubricating oil moreover.
Preferably, the piston pin hole is a double-profile pin hole, and the central line of the piston pin hole is perpendicular to the axis of the novel forged steel piston.
Through the technical scheme, novel forged steel piston adopts the grid structure not only to reduce the piston quality, the heat radiating area has been increased, the cooling effect has been strengthened, piston skirt portion and cylinder liner area of contact have been reduced more effectively, friction loss has effectively been reduced, novel forged steel piston adopts the formula cooling of splashing, cold oil chamber in need not to design, the problem of cold oil chamber processing difficulty in effectively having avoided, the inefficiency, with high costs, the compression height of piston has effectively been reduced simultaneously, make piston structure compacter, the lightweight, in addition, whole engine does not have the oil spout design and can effectively reduce power loss, promote the dynamic behavior of engine, also be favorable to improving the emission performance of engine. Through designing the oil storage tank, can enter into piston pin hole inside along the oilhole with the lubricating oil that splashes or flow through, be favorable to the lubrication between piston pin hole and the piston pin, reduce because of the not enough piston pin hole interlock risk that leads to of lubricated degree. The novel forged steel piston can be integrally forged and formed, can be manufactured by numerical control milling, is convenient and simple to machine and manufacture, does not need welding, and reduces the cost.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
figure 1 shows a schematic structural view of a new forged steel piston according to one embodiment of the present invention;
FIG. 2 shows a front view of the new forged steel piston of FIG. 1;
FIG. 3 shows a side view of the new forged steel piston of FIG. 1;
figure 4 shows a perspective cross-sectional view of the new forged steel piston of figure 1,
wherein, the corresponding relationship between the reference numbers and the components in fig. 1 to fig. 4 is:
102 piston head, 104 piston skirt, 106 piston pin boss, 108 grid structure, 110 piston ring groove, 112 combustion chamber, 114 piston pin hole, 116 oil storage groove and 118 oil hole.
Detailed Description
In order to make the aforementioned objects, features and advantages of the present invention more clearly understood, the present invention will be described in further detail with reference to the accompanying drawings and detailed description. It should be noted that the embodiments and features of the embodiments of the present application may be combined with each other without conflict.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, however, the present invention may be practiced in other ways than those specifically described herein, and therefore the scope of the present invention is not limited by the specific embodiments disclosed below.
The novel forged steel piston according to an embodiment of the present invention will be described in detail with reference to fig. 1 to 4.
As shown in fig. 1 to 4, the novel forged steel piston includes a piston head 102, a piston skirt 104, and a piston pin boss 106, and the novel forged steel piston further includes: a mesh structure 108 disposed below the piston head 102 to form a piston skirt 104; a piston ring groove 110 sleeved on the outer side surface of the piston head 102; a combustion chamber 112 is provided in an inwardly facing recess in the piston head 102.
In the embodiment, the piston skirt 104 is formed by the grid structure 108 arranged below the piston head 102, so that the self structure can be utilized to perform effective heat dissipation and cooling, the heat dissipation area is increased, the cooling effect is enhanced, the contact area between the piston skirt 104 and a cylinder sleeve is effectively reduced, the friction loss is effectively reduced, and the design of an inner cooling oil cavity is not required, the processing is convenient, the overall weight of the piston is reduced, the overall performance of the piston is improved, the piston ring groove 110 sleeved on the outer side surface of the piston head 102 is favorable for scraping lubricating oil on the cylinder wall, the loss of the lubricating oil is reduced, the effective combustion of fuel is favorable for realizing through the combustion chamber 112 arranged in the inward groove of the piston head 102, the function of the piston is realized, the novel forged steel piston can be integrally forged and formed, can also be manufactured by numerical control milling, and the processing and the manufacturing are convenient and simple, welding is not needed, and the cost is reduced.
Specifically, the grid structure 108 is determined according to the size of the piston and the change of the temperature field of the piston, the piston is cooled in a splashing mode, an inner cooling oil cavity does not need to be designed, and the problems that the inner cooling oil cavity is difficult to process, low in efficiency and high in cost are effectively solved.
The grid structure 108 includes: the grid plates are arranged adjacently and are uniformly distributed in an array.
In this embodiment, the grid structure 108 is formed by uniformly distributing a plurality of grid sheets arranged adjacently in an array, so that the weight of the piston is reduced while the heat dissipation area is increased, and the lengths of the grid sheets at different positions can be adaptively adjusted.
As shown in fig. 1 to 4, the grid structure 108 includes: the density of the grid plates distributed at the bottom of the combustion chamber 112 is higher than that of the grid plates distributed at other positions except the bottom of the combustion chamber 112.
In this embodiment, the density of the grid plates distributed at the bottom of the combustion chamber 112 is greater than the density of the grid plates distributed at other positions except the bottom of the combustion chamber 112, so that the weight of the piston is reduced, the heat dissipation area at a high temperature is large, the heat dissipation effect is further improved, and the lengths of the grid plates at different positions can be adjusted adaptively.
The grid includes but is not limited to a bar, a cylinder, a parallelogram, a trapezoid.
As shown in fig. 1 to 4, the piston ring groove 110 includes two gas ring grooves and one oil ring groove, and the gas ring groove, and the oil ring groove are formed in sequence from top to bottom.
In this embodiment, include twice gas ring groove and one oil ring groove through piston ring groove 110, be gas ring groove, oil ring groove by the top down in proper order, be favorable to scraping the lubricating oil on the cylinder wall, reduce the loss of lubricating oil.
As shown in fig. 1 to 4, the piston pin boss 106 is provided with a piston pin hole 114, and the novel forged steel piston further includes: an oil reservoir 116 provided above the top of the piston pin hole 114; and the oil hole 118 is arranged below the top of the piston pin hole 114, the oil hole 118 is matched with the oil storage groove 116, and the oil storage groove 116 conveys the received lubricating oil to the interior of the piston pin hole 114 along the oil hole 118.
In this embodiment, the oil reservoir 116 disposed above the top of the piston pin hole 114 may receive splashed or flowed-through lubricating oil, and the oil hole 118 disposed below the top of the piston pin hole 114 may be matched with the oil reservoir 116 to deliver the lubricating oil received by the oil reservoir 116 to the inside of the piston pin hole 114, thereby facilitating lubrication between the piston pin hole 114 and the piston pin and reducing the risk of seizure of the piston pin hole 114 due to insufficient lubrication.
As shown in fig. 1 to 4, the number of the oil holes 118 is four, the centers of the oil holes 118 are perpendicular to the axis of the piston pin hole 114 and are located on the top cylindrical surface of the piston pin boss 106, and the centers of the four oil holes 118 are symmetrical with respect to the center of the novel forged steel piston.
In this embodiment, four oil holes 118 are used, the center of each oil hole 118 is perpendicular to the axis of the corresponding piston pin hole 114 and is located on the top cylindrical surface of the corresponding piston pin seat 106, and the centers of the four oil holes 118 are symmetrical with respect to the center of the novel forged steel piston, so that lubrication of the corresponding piston pin hole 114 is effectively guaranteed, and unnecessary waste of lubricating oil is reduced.
As shown in fig. 1-4, the piston pin bore 114 is a double profile bore, with the centerline of the piston pin bore 114 being perpendicular to the axis of the new forged steel piston.
The technical scheme of the utility model, combine the figure above to explain in detail the utility model discloses a novel forged steel piston, not only reduced the piston quality through adopting the grid structure, increased heat radiating area, the cooling effect has been strengthened, piston skirt portion and cylinder liner area of contact have been reduced more effectively, friction loss has effectively been reduced, novel forged steel piston adopts splash formula cooling, cold oil chamber in need not to design, it is difficult effectively to have avoided interior cold oil chamber processing, low efficiency, with high costs problem, the compression height of piston has effectively been reduced simultaneously, make piston structure compacter, the lightweight, in addition, whole engine does not have the oil spout design and can effectively reduce the power loss, promote the dynamic behavior of engine, also be favorable to improving the emission performance of engine. Through designing the oil storage tank, can enter into piston pin hole inside along the oilhole with the lubricating oil that splashes or flow through, be favorable to the lubrication between piston pin hole and the piston pin, reduce because of the not enough piston pin hole interlock risk that leads to of lubricated degree. The novel forged steel piston can be integrally forged and formed, can be manufactured by numerical control milling, is convenient and simple to machine and manufacture, does not need welding, and reduces the cost.
In the present application, the terms "first", "second", "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance; the term "plurality" means two or more unless expressly limited otherwise. The terms "mounted," "connected," "fixed," and the like are to be construed broadly, and for example, "connected" may be a fixed connection, a removable connection, or an integral connection; "coupled" may be direct or indirect through an intermediary. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.
In the description of the present invention, it should be understood that the terms "upper", "lower", "left", "right", "front", "back", 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 simplification of description, but do not indicate or imply that the device or unit indicated must have a specific direction, be constructed and operated in a specific orientation, and therefore, should not be construed as limiting the present invention.
In the description of the present specification, the description of the terms "one embodiment," "some embodiments," "specific embodiments," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (8)
1. The utility model provides a novel forged steel piston, piston head, piston skirt portion and piston pin boss including the cooperation setting, its characterized in that, novel forged steel piston still includes:
the grid structure is arranged below the piston head to form the piston skirt;
the piston ring groove is sleeved on the outer side surface of the piston head;
and the combustion chamber is arranged in the inward groove of the piston head.
2. The new forged steel piston of claim 1, wherein said lattice structure comprises:
the grid plates are arranged adjacently and are uniformly distributed in an array.
3. The new forged steel piston of claim 1, wherein said lattice structure comprises:
the grid plates are arranged adjacently, and the density of the grid plates distributed at the bottom of the combustion chamber is greater than that of the grid plates distributed at other positions except the bottom of the combustion chamber.
4. A new forged steel piston according to claim 2 or 3,
the grid plate includes but is not limited to a bar shape, a cylinder shape, a parallelogram shape and a trapezoid shape.
5. The new forged steel piston of claim 4,
the piston ring groove comprises two gas ring grooves and an oil ring groove, and the gas ring groove, the gas ring groove and the oil ring groove are sequentially arranged from the top to the bottom.
6. The new forged steel piston of claim 5,
the piston pin seat is provided with a piston pin hole,
the novel forged steel piston further comprises:
the oil storage tank is arranged above the top of the piston pin hole;
the oil hole is arranged below the top of the piston pin hole and is matched with the oil storage tank,
wherein the oil reservoir delivers the received lubricating oil to the inside of the piston pin hole along the oil hole.
7. The new forged steel piston of claim 6,
the center of the four oil holes is perpendicular to the axis of the piston pin hole and is positioned on the top cylindrical surface of the piston pin seat, and the centers of the four oil holes are symmetrical about the center of the novel forged steel piston.
8. The new forged steel piston of claim 7,
the piston pin hole is a double-special-shaped pin hole, and the central line of the piston pin hole is perpendicular to the axis of the novel forged steel piston.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821608603.XU CN210531007U (en) | 2018-09-30 | 2018-09-30 | Forged steel piston |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821608603.XU CN210531007U (en) | 2018-09-30 | 2018-09-30 | Forged steel piston |
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| CN210531007U true CN210531007U (en) | 2020-05-15 |
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|---|---|---|---|
| CN201821608603.XU Active CN210531007U (en) | 2018-09-30 | 2018-09-30 | Forged steel piston |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109026427A (en) * | 2018-09-30 | 2018-12-18 | 滨州学院 | Novel forging steel piston |
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2018
- 2018-09-30 CN CN201821608603.XU patent/CN210531007U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109026427A (en) * | 2018-09-30 | 2018-12-18 | 滨州学院 | Novel forging steel piston |
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