CN102797584A - Energy-saving piston for gas engine - Google Patents
Energy-saving piston for gas engine Download PDFInfo
- Publication number
- CN102797584A CN102797584A CN201210204345XA CN201210204345A CN102797584A CN 102797584 A CN102797584 A CN 102797584A CN 201210204345X A CN201210204345X A CN 201210204345XA CN 201210204345 A CN201210204345 A CN 201210204345A CN 102797584 A CN102797584 A CN 102797584A
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- Prior art keywords
- piston
- gas engine
- energy
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- saving
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- 238000002485 combustion reaction Methods 0.000 claims abstract description 10
- 210000000707 wrist Anatomy 0.000 claims description 39
- 241001125879 Gobio Species 0.000 claims description 15
- 230000008602 contraction Effects 0.000 claims description 11
- 239000000919 ceramic Substances 0.000 claims description 10
- 238000000034 method Methods 0.000 claims description 9
- 230000008569 process Effects 0.000 claims description 7
- 230000001681 protective effect Effects 0.000 claims description 6
- 235000019994 cava Nutrition 0.000 claims description 5
- 230000003647 oxidation Effects 0.000 claims description 4
- 238000007254 oxidation reaction Methods 0.000 claims description 4
- 239000011241 protective layer Substances 0.000 claims description 4
- 238000000151 deposition Methods 0.000 claims description 3
- 239000010410 layer Substances 0.000 claims description 3
- 239000000295 fuel oil Substances 0.000 abstract description 2
- 238000006073 displacement reaction Methods 0.000 abstract 1
- 239000010705 motor oil Substances 0.000 abstract 1
- 239000007789 gas Substances 0.000 description 19
- 239000010687 lubricating oil Substances 0.000 description 5
- 230000008859 change Effects 0.000 description 4
- 238000007599 discharging Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000004880 explosion Methods 0.000 description 2
- 238000010304 firing Methods 0.000 description 2
- 229910000838 Al alloy Inorganic materials 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 230000037396 body weight Effects 0.000 description 1
- 239000000567 combustion gas Substances 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 239000002737 fuel gas Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 239000013585 weight reducing agent Substances 0.000 description 1
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- Pistons, Piston Rings, And Cylinders (AREA)
Abstract
The invention discloses an energy-saving piston for a gas engine, and solves the technical problem of the heavy piston in the prior art. The technical scheme is that the energy-saving piston for the gas engine comprises a piston top surface, a piston combustion chamber, a piston head, a piston ring groove, a piston skirt, a wedge-shaped pin seat arranged in the cavity of the piston, a piston pin hole provided with a clamp ring groove, and a piston pin, wherein the ratio of the height to the outside diameter of the piston is (1-1.035):1; and the piston pin comprises a piston pin outer cycle, a piston pin inner hole and a conical surface formed in the piston pin inner hole, wherein the ratio of the length of the piston pin to the diameter of the piston pin outer circle is (1.96-2.05):1. The piston and the piston pin provided by the invention are particularly used for a T6114ZLQ-type gas engine, wherein the diameter of a working cylinder is 114 mm, the number of the cylinders is 6, and the displacement is 8L and 9L; the piston is light in weight, reasonable in structure, and low in invalid friction power loss; and the aims of improving power, reducing fuel oil and engine oil consumption, saving energy resources, and reducing pollution and emission are fulfilled.
Description
Technical field
The invention belongs to the mechanical designing technique field; Relate to the equipped part of the medium and heavy gas engine of a kind of high speed; A kind of specifically energy-saving piston that is used for T6114ZLQ type gas engine; Being specially adapted to the working cylinder diameter is 114mm, and number of cylinders is 6 cylinders, and discharge capacity is the T6114ZLQ type gas engine of 8L, 9L.
Background technique
Gas engine has machinery such as the automobile of being mainly used in, boats and ships, engineering machinery, Transport Machinery, generator set; Piston and wrist pin all are one of component the most key in the motor; Be " heart " in the motor; The pressure of explosion that it produces fuel gas buring passes to bent axle through crank-connecting rod and does work, and forms power.
Gas engine is superior emission performance, Economy and the comparatively suitable power of CNG motor especially, guides it to use more and more widely, especially on city bus.Yet the change of processing dimensions such as firing chamber is often carried out in the design of the piston of gas engine producer on the basis of diesel engine piston at present, and change is little on the structure; Wrist pin is the diesel engine design of using for reference basically.And gas engine is compared with the working condition of diesel engine; Index difference such as pressure of explosion, load is bigger; See that from the value engineering angle structural design of these movement parts exists functional too more than needed, and these unnecessary weight often cause the ratio of gas engine wattless power excessive; Thereby the power character of causing, combustion gas, consumption of lubricating oil index exist bigger optimal design space, have good power character, Economy and emission performance to reach gas engine.
The structure of piston more complicated, piston is made up of head, end face, firing chamber, skirt section on structure, and piston crown has piston ring groove, piston pin boss and pin-and-hole that the piston skirt has connection and support piston pin to use.
Disclosed T6114ZLQ type gas engine structure of piston parameter height overall is 120mm in the existing technology, and the basic shape of piston retraction window is the circular arc of Φ 112mm, and in the position of pin-and-hole center line, the spacing of piston cavity wedge shape key seat is generally 43.5-45.5 mm.The depth pistion of this structure is higher, the pin-and-hole wall thickness, and weight naturally will be bigger; Cause the operating movement reciprocal inertia force very big, the frictional loss merit is more, and useful horsepower reduces; Gas consumption and consumption of lubricating oil are high, and power character, Economy and energy-conserving and environment-protective performance all exist gap with not enough.And, want both to alleviate the weight of piston because structure of piston is less, also to guarantee mechanical strength; All physical dimensions also will be mated very much; This is very formidable to those skilled in the art, even have only the change of 1mm, all will consider the change of all structures.
Summary of the invention
The objective of the invention is to have designed a kind of new-type piston, from each structure, take light-weight design, also will guarantee the coupling of each size simultaneously, finally reach the purpose of weight reduction in order to solve the bigger technical barrier of piston weight in the existing technology.
The technological scheme that the present invention adopts is; The energy-saving piston that is used for gas engine; Comprise piston-top surface, piston combustion bowl, piston crown, piston ring groove, piston skirt, the wedge shape key seat that in piston cavity, is provided with, the piston pin hole that has annular groove; And wrist pin; Key is: the height of described piston and the ratio of external diameter are (1 ~ 1.035): 1, and described wrist pin comprises the conical surface that is provided with in wrist pin cylindrical, gudgeon pin bore, the gudgeon pin bore, the diameter proportion of the length of wrist pin and wrist pin cylindrical is (1.96 ~ 2.05): 1.
Described wedge shape key seat is symmetrical set in piston cavity, is 43-49mm in the spacing of piston pin hole position of center line wedge shape key seat.
Described annular groove is symmetrical set in piston pin hole, and spacing is 88-91mm.
The described layer protecting film that on the outer surface of piston ring groove, also is provided with, the thickness of protective film is 0.01-0.04mm.
Described protective film is the abrasion-proof inserted ring that processes through imbedding process, or through the ceramic film of plasma oxidation deposition techniques.
Described piston also is provided with contraction window, contraction window be shaped as the hub-like that caves inward.
Be provided with one deck ceramic protective layer on the surface of piston-top surface, piston combustion bowl and piston crown.
The height of described piston is 114-118mm, and the diameter of piston is 113.87 ± 0.007mm.
Described wrist pin length is 88-91mm, and the diameter of wrist pin cylindrical is 43-45mm, and the diameter of gudgeon pin bore is 22-28mm, and the wall thickness of the end at wrist pin two ends is 3-5mm.
The angle of inclination of the described conical surface is 13-50 °.
Key of the present invention is the size-modify to each structure in the piston; The whole height of piston is designed to 114-118mm; To be 43-49mm in the spacing of piston pin hole position of center line wedge shape key seat simultaneously, and so both can guarantee to reduce height, consider piston whole rigidity and bearing capacity simultaneously; But also increased the hub-like contraction window that caves inward, deducted weight to piston function and the inoperative unnecessary wall thickness of performance.The reliability that has kept mechanical strength and work has reduced this body weight again effectively.The to-and-fro motion inertial force of diesel engine reduces 15-40%, and the impact of the inertial force when greatly reducing host work and the loss of useful horsepower have improved useful horsepower.
Piston of the present invention and wrist pin; Being used in particular for the working cylinder diameter is 114mm; Number of cylinders is 6 cylinders, and discharge capacity is the T6114ZLQ type gas engine of 8L, 9L, and its frictional work loss in light weight, rational in infrastructure, invalid is little; Realize raising power, reduced fuel oil, consumption of lubricating oil, energy saving, minimizing pollution and the purpose of discharging.The combination property of this piston wrist pin assembly shows as: the useful horsepower of motor has improved 7-15kW, and gas consumption has reduced by 12～18%, and consumption of lubricating oil has reduced by 10～13%; Reduce the discharging and the operational noise of pollutant, reached the purpose of practicing thrift petroleum-based energy, protection atmosphere environment.
Use gas engine of the present invention, have that power is big, fuel consume and consumption of lubricating oil be low, power loss, low, the energy-conserving and environment-protective of frictional work loss, characteristics such as noise is low, safe and reliable.
Description of drawings
Fig. 1 is a piston part sectioned view of the present invention.
Fig. 2 is another embodiment of protective layer.
Fig. 3 is the left-hand view of Fig. 1.
Fig. 4 is a wrist pin structural representation of the present invention.
In the accompanying drawing, 1 represents piston-top surface, and 2 represent piston combustion bowl, and 3 represent piston crown, and 4 represent piston ring groove; 4-1 represents abrasion-proof inserted ring, and 4-2 represents ceramic film, 5 representative piston skirts, and 6 represent contraction window; 7 represent piston cavity, and 8 represent the wedge shape key seat, and 9 represent piston pin hole, and 10 represent annular groove; 11 represent the wrist pin cylindrical, and 12 represent gudgeon pin bore, and 13 represent the conical surface in the gudgeon pin bore, and 14 represent the end face of wrist pin.
Embodiment
The energy-saving piston that is used for gas engine; The wedge shape key seat 8 that comprises piston-top surface 1, piston combustion bowl 2, piston crown 3, piston ring groove 4, piston skirt 5, in piston cavity 7, is provided with, have the piston pin hole 9 of annular groove 10; And wrist pin; Key is: the height of described piston and the ratio of external diameter are (1 ~ 1.035): 1; Described wrist pin comprises the conical surface 13 that is provided with in wrist pin cylindrical 11, gudgeon pin bore 12, the gudgeon pin bore 12, and the diameter proportion of the length of wrist pin and wrist pin cylindrical 11 is (1.96 ~ 2.05): 1.
Described wedge shape key seat 8 is symmetrical set in piston cavity 7, is 43-49mm in the spacing of piston pin hole 9 position of center line wedge shape key seats 8.
Described annular groove 10 is symmetrical set in piston pin hole 9, and spacing is 88-91mm.
The described layer protecting film that on the outer surface of piston ring groove 4, also is provided with, the thickness of protective film is 0.01-0.04mm.
Described protective film is the abrasion-proof inserted ring 4-1 that processes through imbedding process, or through the ceramic film 4-2 of plasma oxidation deposition techniques.
Described piston also is provided with contraction window 6, contraction window 6 be shaped as the hub-like that caves inward.
Surface at piston-top surface 1, piston combustion bowl 2 and piston crown 3 is provided with one deck ceramic protective layer.
The height of described piston is 114-118mm, and the diameter of piston is 113.87 ± 0.007mm.
Described wrist pin length is 88-91mm, and the diameter of wrist pin cylindrical 11 is 43-45mm, and the diameter of gudgeon pin bore 12 is 22-28mm, and the wall thickness at end face 14 places at wrist pin two ends is 3-5mm.
The angle of inclination of the described conical surface 13 is 13-50 °.
Below in conjunction with embodiment the present invention is explained further details:
The energy-saving piston that is used for T6114ZLQ type gas engine; Shown in Fig. 1～3, comprise that piston-top surface 1, piston combustion bowl 2, piston crown 3, top-ring groove 4, piston skirt 5, contraction window 6, internal piston are provided with the cavity 7 of hollow, wedge shape key seat 8, piston pin hole 9, annular groove 10.Said piston height overall is 116mm, the piston cavity wedge pin distance between seats 48.6mm in the position of piston pin hole 9 center lines.
Embodiment 1: said piston sets gradually three road piston ring grooves from top to bottom, and the piston ring groove 4 of the top of said piston processes for the abrasion-proof inserted ring 4-1 of castingin.The contraction window 6 of said piston, this contraction window are the hub-like that caves inward, its shape such as Fig. 1, Fig. 3.Spacing is 91 mm in the annular groove 10 of said piston, corresponding setting with the wrist pin length overall.
Embodiment 2: present embodiment and embodiment's 1 difference is: piston ring groove 4 basic materials and the piston integral uniform of the top of said piston; Be cast aluminium alloy; After piston ring groove 4 machines, the local ceramic film 4-2 that increases one deck through little plasma oxidation.This ceramic film 4-2 thickness is 0.010-0.040mm.Illustrate like Fig. 2.
Embodiment 3: present embodiment and embodiment's 2 difference is: the ceramic film 4-2 at said piston ring groove position expands to the surface of piston-top surface 1, piston combustion bowl 2, piston crown 3.
Embodiment 4: be used for the energy-saving wrist pin of T6114ZLQ type gas engine, and as shown in Figure 4, comprise the conical surface 13 at wrist pin cylindrical 11, gudgeon pin bore 12, gudgeon pin bore 12 two ends, the end face 14 at wrist pin two ends.Said wrist pin outside diameter is 45mm.Said wrist pin length overall is 91mm, and gudgeon pin bore 12 stage casing diameters are 27mm, and length is 60mm.Said wrist pin end face 14 place's wrist pin wall thickness are 5mm, and promptly gudgeon pin bore conical surface maximum diameter is 35mm.
Claims (10)
1. the energy-saving piston that is used for gas engine; The wedge shape key seat (8) that comprises piston-top surface (1), piston combustion bowl (2), piston crown (3), piston ring groove (4), piston skirt (5), in piston cavity (7), is provided with, have the piston pin hole (9) of annular groove (10); And wrist pin; It is characterized in that: the height of described piston and the ratio of external diameter are (1 ~ 1.035): 1; Described wrist pin comprises the conical surface (13) that is provided with in wrist pin cylindrical (11), gudgeon pin bore (12), the gudgeon pin bore (12), and the diameter proportion of the length of wrist pin and wrist pin cylindrical (11) is (1.96 ~ 2.05): 1.
2. the energy-saving piston that is used for gas engine according to claim 1; It is characterized in that: described wedge shape key seat (8) is symmetrical set in piston cavity (7), is 43-49mm in the spacing of piston pin hole (9) position of center line wedge shape key seat (8).
3. the energy-saving piston that is used for gas engine according to claim 1 is characterized in that: described annular groove (10) is symmetrical set in piston pin hole (9), and spacing is 88-91mm.
4. the energy-saving piston that is used for gas engine according to claim 1 is characterized in that: the described layer protecting film that on the outer surface of piston ring groove (4), also is provided with, the thickness of protective film is 0.01-0.04mm.
5. the energy-saving piston that is used for gas engine according to claim 4 is characterized in that: described protective film is the abrasion-proof inserted ring (4-1) that processes through imbedding process, or through the ceramic film (4-2) of plasma oxidation deposition techniques.
6. the energy-saving piston that is used for gas engine according to claim 1 is characterized in that: described piston also is provided with contraction window (6), contraction window (6) be shaped as the hub-like that caves inward.
7. the energy-saving piston that is used for gas engine according to claim 1 is characterized in that: the surface at piston-top surface (1), piston combustion bowl (2) and piston crown (3) is provided with one deck ceramic protective layer.
8. the energy-saving piston that is used for gas engine according to claim 1 is characterized in that: the height of described piston is 114-118mm, and the diameter of piston is 113.87 ± 0.007mm.
9. the energy-saving piston that is used for gas engine according to claim 1; It is characterized in that: described wrist pin length is 88-91mm; The diameter of wrist pin cylindrical (11) is 43-45mm; The diameter of gudgeon pin bore (12) is 22-28mm, and the wall thickness that the end face at wrist pin two ends (14) is located is 3-5mm.
10. the energy-saving piston that is used for gas engine according to claim 1 is characterized in that: the angle of inclination of the described conical surface (13) is 13-50 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210204345.XA CN102797584B (en) | 2012-06-20 | 2012-06-20 | Energy-saving piston for gas engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210204345.XA CN102797584B (en) | 2012-06-20 | 2012-06-20 | Energy-saving piston for gas engine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102797584A true CN102797584A (en) | 2012-11-28 |
| CN102797584B CN102797584B (en) | 2014-08-06 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210204345.XA Expired - Fee Related CN102797584B (en) | 2012-06-20 | 2012-06-20 | Energy-saving piston for gas engine |
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| Country | Link |
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| CN (1) | CN102797584B (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103147873A (en) * | 2013-03-30 | 2013-06-12 | 长城汽车股份有限公司 | Engine piston mechanism and machining method thereof as well as corresponding engine and automobile |
| CN103233828A (en) * | 2013-04-28 | 2013-08-07 | 石家庄金刚凯源动力科技有限公司 | Piston used for diesel engine of Weichai P10 series |
| CN103912398A (en) * | 2014-04-04 | 2014-07-09 | 含山县全兴内燃机配件有限公司 | Piston pin for high-strength internal combustion engine |
| CN109026426A (en) * | 2018-08-15 | 2018-12-18 | 全椒县全动机械有限公司 | A kind of internal combustion engine and its surface treatment method |
| CN109653896A (en) * | 2017-10-10 | 2019-04-19 | 隆巴第尼有限责任公司 | Piston and its manufacturing method |
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2012
- 2012-06-20 CN CN201210204345.XA patent/CN102797584B/en not_active Expired - Fee Related
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| 吴义民等: "压缩天然气发动机活塞开发", 《内燃机与动力装置》 * |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103147873A (en) * | 2013-03-30 | 2013-06-12 | 长城汽车股份有限公司 | Engine piston mechanism and machining method thereof as well as corresponding engine and automobile |
| CN103147873B (en) * | 2013-03-30 | 2015-05-27 | 长城汽车股份有限公司 | Engine piston mechanism and machining method thereof as well as corresponding engine and automobile |
| CN103233828A (en) * | 2013-04-28 | 2013-08-07 | 石家庄金刚凯源动力科技有限公司 | Piston used for diesel engine of Weichai P10 series |
| CN103233828B (en) * | 2013-04-28 | 2015-06-03 | 石家庄金刚凯源动力科技有限公司 | Piston used for diesel engine of Weichai P10 series |
| CN103912398A (en) * | 2014-04-04 | 2014-07-09 | 含山县全兴内燃机配件有限公司 | Piston pin for high-strength internal combustion engine |
| CN109653896A (en) * | 2017-10-10 | 2019-04-19 | 隆巴第尼有限责任公司 | Piston and its manufacturing method |
| CN109026426A (en) * | 2018-08-15 | 2018-12-18 | 全椒县全动机械有限公司 | A kind of internal combustion engine and its surface treatment method |
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| Publication number | Publication date |
|---|---|
| CN102797584B (en) | 2014-08-06 |
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Granted publication date: 20140806 Termination date: 20180620 |