CN202970933U - Welded type combustion engine piston of integrated forged steel structure and with double coolant oil cavities - Google Patents
Welded type combustion engine piston of integrated forged steel structure and with double coolant oil cavities Download PDFInfo
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- CN202970933U CN202970933U CN 201220646167 CN201220646167U CN202970933U CN 202970933 U CN202970933 U CN 202970933U CN 201220646167 CN201220646167 CN 201220646167 CN 201220646167 U CN201220646167 U CN 201220646167U CN 202970933 U CN202970933 U CN 202970933U
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Abstract
The utility model discloses a welded type combustion engine piston of an integrated forged steel structure and with double coolant oil cavities. The welded type combustion engine piston of the integrated forged steel structure and with the double coolant oil cavities comprises an upper part and a lower part, wherein the upper part and the lower part are welded together, an annular coolant oil cavity is formed in the middle of the inner side of the head portion of the piston on the lower portion of a combustion chamber, a basin-shaped coolant oil cavity is formed along the inner side of an annular groove, the annular coolant oil cavity and the basin-shaped coolant oil cavity are connected through oil holes, an oil outlet connected with the basin-shaped coolant oil cavity is formed in the middle of the upper portion of the lower part, the lower portion of the oil outlet is connected with the inner cavity of the piston, and the annular coolant oil cavity is connected with the inner cavity of the piston through an oil inlets. Due to the fact that the upper part and the lower part of the piston are forged independently and the coolant oil cavities are welded after the upper part and the lower part of the piston are machined, processes of piston blank forging and closed oil cavity forming are simplified, and structural strength of the piston is high. The arrangement of the double coolant oil cavities is beneficial for reduction of operating temperature of the piston and improvement of reliability of the piston.
Description
Technical field
The utility model relates to the internal combustion engine technical field, relates in particular to the whole forged steel internal combustion engine of a kind of pair of cooling oil chamber welding type.
Background technique
Along with the progress of demand and the technology in market, be used for the motors such as truck, engineering machinery and boats and ships all to high-power, high load future development, reinforcing degree improves constantly, and emission request is more and more stricter.The structural strength of original conventional all-aluminium piston and the ability of bearing high heat load, high mechanical load can not satisfy motor high power, the high reinforcement and the requirement of low emission gradually.Also have to adopt and make the integral type piston with forged steel structure, this piston blank integral type is forged, process annular chamber from annular groove below feed, then the annular chamber that processes with a ring cowling and head forms oil closed cavity, and this piston causes manufacturability relatively complicated owing to having adopted the design of oil pocket ring cowling, manufacture cost is higher, the encapsulation of oil pocket is relatively poor simultaneously, and can only arrange an annular cooling oil chamber, and cooling effect is relatively relatively poor.
Summary of the invention
The purpose of this utility model is exactly the problems referred to above and the deficiency that exists in order to solve prior art; Provide a kind of pair of cooling oil chamber welding type whole forged steel internal combustion engine; Forge respectively piston top and piston bottom, cooling oil chamber is to form by welding after piston top and piston bottom process respectively, make the forging of piston blank, the formation reduction of process of oil closed cavity, the structural strength of piston is higher, arrange two cooling oil chambers, more be conducive to reduce the operating temperature of piston, improve reliability.
To achieve these goals, the utility model adopts following technological scheme:
A kind of pair of whole forged steel internal combustion engine of cooling oil chamber welding type, comprise piston top, piston bottom, piston top and piston bottom are welded, the piston crown bosom of bottom, described firing chamber is provided with annular cooling oil chamber, is provided with basin shape cooling oil chamber along the inside of annular groove, the annular cooling oil chamber is connected by oilhole with basin shape cooling oil chamber, the central upper portion of piston bottom is provided with the oil outlet that is connected with basin shape cooling oil chamber, the oil outlet bottom is connected with piston cavity, and annular cooling oil chamber is connected with piston cavity by oil inlet hole.
Be provided with circular groove between piston crown and skirt section, circular groove communicates with inner chamber at the piston long axis direction.
Forge respectively piston top and piston bottom, welds together after roughing.
Piston top and piston bottom weld together by friction welding or laser beam welding, and position while welding is located at the cylindrical position between the annular groove of piston crown.
The principle of the utility model work: forge respectively piston of the present utility model top and bottom, welds together after roughing, forms annular cooling oil chamber and basin shape cooling oil chamber in piston crown, is connected by being communicated with oilhole between the oil pocket of two sealings.Simultaneously, two cooling oil chambers communicate with piston cavity by oil inlet hole, oil outlet.When piston was worked in motor, cooling machine oil sprayed in annular cooling oil chamber by oil inlet hole, and entered in basin shape cooling oil chamber by being communicated with oilhole, and machine oil shakes in two oil pockets simultaneously, flows out from oil outlet at last, takes away the heat of piston only.Wherein, annular cooling oil chamber mainly works to reduce piston-top surface, annular groove and edge of combustion chamber position heat load; Basin shape cooling oil chamber mainly reduces the heat load in neutral position, firing chamber.This pair of cooling oil chamber structure can effectively reduce the operating temperature of piston more, guarantees the functional reliability of piston and piston ring.Can require to process circular groove according to specific design between piston crown and skirt section, communicate with inner chamber at the piston long axis direction, be conducive to oil ring groove position machine oil backflow, alleviate simultaneously product weight.
The beneficial effects of the utility model:
1. the utility model with the whole forging steel piston of the welding type of two cooling oil chambers, can replace former all-aluminium piston and integral type forging steel piston, have advantages of lightweight, intensity is high, good cooling results, satisfies reinforcement and the emission request of motor;
2. two cooling oil chamber structures effectively reduce the operating temperature of piston, guarantee the functional reliability of piston and piston ring;
3. can require to process circular groove according to specific design between piston crown and skirt section, communicate with inner chamber at the piston long axis direction, be conducive to oil ring groove position machine oil backflow, alleviate simultaneously product weight.
4. piston top and the bottom manufacture method of forging respectively is than the method good manufacturability of blank solid forging moulding, and the blank residual stress is little, forms the cooling oil chamber of sealing by welding, increases the hot lower distortion of piston overall structure rigidity, particularly annular groove position little.
Description of drawings
Fig. 1 is structural representation of the present utility model;
Fig. 2 is the A-A sectional view of Fig. 1;
Fig. 3 is structural representation after piston top blank roughing;
Fig. 4 is structural representation after piston bottom blank roughing;
Wherein, 1 piston, 2 piston tops, 3 piston bottoms, 4 piston crowns, 5 piston skirts, 6 firing chambers, 7 annular cooling oil chambers, 8 basin shape cooling oil chambers, 9 oil inlet holes, 10 oil outlets, 11 are communicated with oilhole, 12 welding regions, 13 pin-and-holes, 14 key seats, 15 jump-ring slots, 16 inner chambers, 17 annular grooves, 18 circular grooves.
Embodiment
Below in conjunction with accompanying drawing and embodiment, the utility model is described further.
embodiment 1, a kind of pair of whole forged steel internal combustion engine of cooling oil chamber welding type, in conjunction with Fig. 1 to Fig. 4, piston 1 comprises piston top 2, piston bottom 3, piston top 2 is welded with piston bottom 3, piston crown 4 bosoms of 6 bottoms, described firing chamber are provided with annular cooling oil chamber 7, inside along annular groove is provided with basin shape cooling oil chamber 8, annular cooling oil chamber 7 is connected by being communicated with oilhole 11 with basin shape cooling oil chamber 8, the central upper portion of piston bottom 3 is provided with the oil outlet 10 that is connected with basin shape cooling oil chamber 8, oil outlet 10 bottoms are connected with piston cavity 16, annular cooling oil chamber 7 is connected with piston cavity 16 by oil inlet hole 9, piston top 2 and piston bottom 3 forgings respectively, pass through friction welding after roughing, or laser beam welding welds together, welded seam area 12 positions are located at the cylindrical position between the annular groove 17 of piston crown 4.
Although above-mentionedly by reference to the accompanying drawings the embodiment of model utility is described; but be not the restriction to the utility model protection domain; one of ordinary skill in the art should be understood that; on the basis of the technical solution of the utility model, those skilled in the art do not need to pay various modifications that creative work can make or distortion still in protection domain of the present utility model.
Claims (4)
1. whole forged steel internal combustion engine of two cooling oil chamber welding types, comprise piston top, piston bottom, it is characterized in that, described piston top and piston bottom are welded, the piston crown bosom of bottom, firing chamber is provided with annular cooling oil chamber, is provided with basin shape cooling oil chamber along the inside of annular groove, the annular cooling oil chamber is connected by oilhole with basin shape cooling oil chamber, the central upper portion of piston bottom is provided with the oil outlet that is connected with basin shape cooling oil chamber, the oil outlet bottom is connected with piston cavity, and annular cooling oil chamber is connected with piston cavity by oil inlet hole.
2. the whole forged steel internal combustion engine of a kind of pair of cooling oil chamber welding type as claimed in claim 1, is characterized in that, be provided with circular groove between described piston crown and piston skirt, circular groove communicates with inner chamber at the piston long axis direction.
3. the whole forged steel internal combustion engine of a kind of pair of cooling oil chamber welding type as claimed in claim 1, is characterized in that, forge respectively described piston top and piston bottom, welds together after roughing.
4. the whole forged steel internal combustion engine of a kind of pair of cooling oil chamber welding type as claimed in claim 1, it is characterized in that, described piston top and piston bottom weld together by friction welding or laser beam welding, and position while welding is located at the cylindrical position between the annular groove of piston crown.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220646167 CN202970933U (en) | 2012-11-30 | 2012-11-30 | Welded type combustion engine piston of integrated forged steel structure and with double coolant oil cavities |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220646167 CN202970933U (en) | 2012-11-30 | 2012-11-30 | Welded type combustion engine piston of integrated forged steel structure and with double coolant oil cavities |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202970933U true CN202970933U (en) | 2013-06-05 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220646167 Expired - Lifetime CN202970933U (en) | 2012-11-30 | 2012-11-30 | Welded type combustion engine piston of integrated forged steel structure and with double coolant oil cavities |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202970933U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103016194A (en) * | 2012-11-30 | 2013-04-03 | 山东滨州渤海活塞股份有限公司 | Double-cooling oil chamber welded type integrally-steel-forged internal combustion engine piston and fabricating method thereof |
-
2012
- 2012-11-30 CN CN 201220646167 patent/CN202970933U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103016194A (en) * | 2012-11-30 | 2013-04-03 | 山东滨州渤海活塞股份有限公司 | Double-cooling oil chamber welded type integrally-steel-forged internal combustion engine piston and fabricating method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20170720 Address after: 256600 No. twenty-one, No. 569, Bohai Road, Shandong, Binzhou Patentee after: BINZHOU BOHAI PISTON Co.,Ltd. Address before: 256602 Bohai Road, Shandong, No. 21, No. 569, Binzhou Patentee before: SHANDONG BINZHOU BOHAI PISTON Co.,Ltd. |
|
| TR01 | Transfer of patent right | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130605 |
|
| CX01 | Expiry of patent term |