CN102797584B - Energy-saving piston for gas engine - Google Patents
Energy-saving piston for gas engine Download PDFInfo
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- CN102797584B CN102797584B CN201210204345.XA CN201210204345A CN102797584B CN 102797584 B CN102797584 B CN 102797584B CN 201210204345 A CN201210204345 A CN 201210204345A CN 102797584 B CN102797584 B CN 102797584B
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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 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 energy-saving piston for T6114ZLQ type gas engine specifically, being specially adapted to working cylinder diameter is 114mm, number of cylinders is 6 cylinders, and discharge capacity is the T6114ZLQ type gas engine of 8L, 9L.
Background technique
Gas engine has the machinery such as the automobile of being mainly used in, boats and ships, engineering machinery, Transport Machinery, generator set, piston and wrist pin are all one of component the most key in motor, " heart " in motor, the pressure of explosion that it produces fuel gas buring passes to bent axle by 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 its application more and more extensive, especially on city bus.Yet the change of the 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, in structure, change is little; Wrist pin is the Design Technology for Diesels of using for reference substantially.And gas engine is compared with the working condition of diesel engine, the index difference such as pressure of explosion, load is larger, from view point of value project, the 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 larger optimal design space, to reach gas engine, there is good power character, Economy and emission performance.
The complicated structure of piston, piston is comprised of head, end face, firing chamber, skirt section structure, and piston crown has piston ring groove, piston pin boss and pin-and-hole that piston skirt has connection and support piston pin to use.
In prior art, the structural parameter height overall of disclosed T6114ZLQ type gas engine piston is 120mm, 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, pin-and-hole wall thickness, and weight naturally will be larger, cause operating movement reciprocal inertia force very large, 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 because the structure of piston is less, want both to alleviate the weight of piston, 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 only have the change of 1mm, all will consider the change of all structures.
Summary of the invention
The object of the invention is, in order to solve the larger technical barrier of piston weight in prior art, 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 object of weight reduction.
The technical solution used in the present invention is, energy-saving piston for gas engine, comprise piston-top surface, piston combustion bowl, piston crown, piston ring groove, piston skirt, the wedge shape key seat arranging in piston cavity, with the piston pin hole of annular groove, 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 arranging in wrist pin cylindrical, gudgeon pin bore, gudgeon pin bore, and 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 arranged in piston cavity, in the spacing of piston pin hole position of center line wedge shape key seat, is 43-49mm.
Described annular groove is symmetrical arranged in piston pin hole, and spacing is 88-91mm.
The described layer protecting film that is also provided with on the outer surface of piston ring groove, the thickness of protective film is 0.01-0.04mm.
Described protective film is the abrasion-proof inserted ring processing through imbedding process, or through the ceramic film of plasma oxidation deposition techniques.
Described piston is also provided with contraction window, contraction window be shaped as the hub-like caving inward.
On the surface of piston-top surface, piston combustion bowl and piston crown, be 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 outer diameter of a circle of wrist pin 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 piston, the whole height of piston is designed to 114-118mm, by the spacing at piston pin hole position of center line wedge shape key seat, be 43-49mm simultaneously, so both can guarantee to reduce height, consider rigidity and the bearing capacity of piston integral body simultaneously, but also increased the hub-like contraction window caving inward, deducted the weight to piston function and the inoperative unnecessary wall thickness of performance.The reliability that has kept mechanical strength and work, has reduced again this body weight effectively.The to-and-fro motion inertial force of diesel engine reduces 15-40%, and the impact of the inertial force while greatly reducing host work and the loss of useful horsepower, improved useful horsepower.
Piston of the present invention and wrist pin, being used in particular for working cylinder diameter is 114mm, number of cylinders is 6 cylinders, discharge capacity is the T6114ZLQ type gas engine of 8L, 9L, its lightweight, rational in infrastructure, invalid frictional work loss is little, realize raising power, reduced fuel oil, consumption of lubricating oil, energy saving, minimizing pollution and the object 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 discharge and the operational noise of pollutant, reached the object of saving petroleum-based energy, environment protection.
Use gas engine of the present invention, have that power is large, fuel consume and consumption of lubricating oil low, power loss, low, the energy-conserving and environment-protective of frictional work loss, the feature such as noise is low, safe and reliable.
Accompanying drawing explanation
Fig. 1 is 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 wrist pin structural representation of the present invention.
In accompanying drawing, 1 represents piston-top surface, and 2 represent piston combustion bowl, 3 represent piston crown, and 4 represent piston ring groove, and 4-1 represents abrasion-proof inserted ring, 4-2 represents ceramic film, and 5 represent piston skirt, and 6 represent contraction window, 7 represent piston cavity, and 8 represent wedge shape key seat, and 9 represent piston pin hole, 10 represent annular groove, and 11 represent wrist pin cylindrical, and 12 represent gudgeon pin bore, 13 represent the conical surface in gudgeon pin bore, and 14 represent the end face of wrist pin.
Embodiment
Energy-saving piston 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, arranges in piston cavity 7, with 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 arranging in wrist pin cylindrical 11, gudgeon pin bore 12, 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 arranged in piston cavity 7, in the spacing of piston pin hole 9 position of center line wedge shape key seats 8, is 43-49mm.
Described annular groove 10 is symmetrical arranged in piston pin hole 9, and spacing is 88-91mm.
The described layer protecting film that is also provided with on the outer surface of piston ring groove 4, the thickness of protective film is 0.01-0.04mm.
Described protective film is the abrasion-proof inserted ring 4-1 processing through imbedding process, or through the ceramic film 4-2 of plasma oxidation deposition techniques.
Described piston is also provided with contraction window 6, contraction window 6 be shaped as the hub-like caving 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 described in further details:
Energy-saving piston for T6114ZLQ type gas engine, as shown in Figures 1 to 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 arrange the cavity 7 of hollow, wedge shape key seat 8, piston pin hole 9, annular groove 10.Described piston height overall is 116mm, at the position of piston pin hole 9 center lines piston cavity wedge pin distance between seats 48.6mm.
Embodiment 1: described piston sets gradually three road piston ring grooves from top to bottom, and the piston ring groove 4 of the top of described piston processes for the abrasion-proof inserted ring 4-1 of castingin.The contraction window 6 of described piston, this contraction window is the hub-like caving inward, its shape is as Fig. 1, Fig. 3.The interior spacing of annular groove 10 of described piston is 91 mm, setting corresponding to wrist pin overall length.
Embodiment 2: the present embodiment is with embodiment 1 difference: piston ring groove 4 basic materials of the top of described piston and piston are whole consistent, be cast aluminium alloy, after piston ring groove 4 machines, the local one deck that increases is through the ceramic film 4-2 of micro-plasma oxidation.This ceramic film 4-2 thickness is 0.010-0.040mm.As Fig. 2 signal.
Embodiment 3: the present embodiment and embodiment's 2 difference is: the ceramic film 4-2 at described piston ring groove position expands to the surface of piston-top surface 1, piston combustion bowl 2, piston crown 3.
Embodiment 4: for the energy-saving wrist pin of T6114ZLQ type gas engine, as shown in Figure 4, comprise wrist pin cylindrical 11, gudgeon pin bore 12, the conical surface 13 at gudgeon pin bore 12 two ends, the end face 14 at wrist pin two ends.Described wrist pin outside diameter is 45mm.Described wrist pin overall length is 91mm, and gudgeon pin bore 12 stage casing diameters are 27mm, and length is 60mm.Described wrist pin end face 14 place's wrist pin wall thickness are 5mm, and gudgeon pin bore conical surface maximum diameter is 35mm.
Claims (10)
1. for the energy-saving piston of gas engine, comprise piston-top surface (1), piston combustion bowl (2), piston crown (3), piston ring groove (4), piston skirt (5), the wedge shape key seat (8) arranging in piston cavity (7), piston pin hole (9) with 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 wrist pin cylindrical (11), gudgeon pin bore (12), the conical surface (13) arranging in gudgeon pin bore (12), 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 for gas engine according to claim 1, it is characterized in that: described wedge shape key seat (8) is symmetrical arranged 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 for gas engine according to claim 1, is characterized in that: described annular groove (10) is symmetrical arranged in piston pin hole (9), and spacing is 88-91mm.
4. the energy-saving piston for gas engine according to claim 1, is characterized in that: on the outer surface of described piston ring groove (4), be also provided with layer protecting film, the thickness of protective film is 0.01-0.04mm.
5. the energy-saving piston for gas engine according to claim 4, is characterized in that: described protective film is the abrasion-proof inserted ring (4-1) processing through imbedding process, or through the ceramic film (4-2) of plasma oxidation deposition techniques.
6. the energy-saving piston for gas engine according to claim 1, is characterized in that: described piston is also provided with contraction window (6), contraction window (6) be shaped as the hub-like caving inward.
7. the energy-saving piston 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 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 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 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 CN102797584A (en) | 2012-11-28 |
| CN102797584B true CN102797584B (en) | 2014-08-06 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201210204345.XA Expired - Fee Related CN102797584B (en) | 2012-06-20 | 2012-06-20 | Energy-saving piston for gas engine |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| 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 |
| EP3470655B1 (en) * | 2017-10-10 | 2020-04-22 | Lombardini S.r.l. | Piston and method of manufacturing thereof |
| 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 |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2554375Y (en) * | 2002-06-29 | 2003-06-04 | 福建力佳股份有限公司 | Piston of multi-cylinder diesel ergine of 110mm cylinder diameter |
| JP4256790B2 (en) * | 2004-01-09 | 2009-04-22 | 三菱重工業株式会社 | Gas engine piston |
| CN201068822Y (en) * | 2007-08-17 | 2008-06-04 | 石家庄金刚内燃机零部件集团有限公司 | Novel piston with ceramic film protection layer |
| CN201330656Y (en) * | 2009-01-01 | 2009-10-21 | 东风南充汽车有限公司 | Piston of natural gas engine |
| CN201531591U (en) * | 2009-11-02 | 2010-07-21 | 盛瑞传动股份有限公司 | Crankshaft-connecting rod piston pin |
| CN202176418U (en) * | 2011-07-13 | 2012-03-28 | 上海柴油机股份有限公司 | Novel natural gas engine piston combustion chamber |
| CN102444496B (en) * | 2011-12-09 | 2013-09-04 | 石家庄金刚内燃机零部件集团有限公司 | Pressurizing oil-saving type piston of diesel engine |
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- 2012-06-20 CN CN201210204345.XA patent/CN102797584B/en not_active Expired - Fee Related
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Granted publication date: 20140806 Termination date: 20180620 |