CN204476583U - The horizontally-opposed piston of a kind of two-stroke, opposed-cylinder engine outer piston - Google Patents
The horizontally-opposed piston of a kind of two-stroke, opposed-cylinder engine outer piston Download PDFInfo
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- CN204476583U CN204476583U CN201520077183.7U CN201520077183U CN204476583U CN 204476583 U CN204476583 U CN 204476583U CN 201520077183 U CN201520077183 U CN 201520077183U CN 204476583 U CN204476583 U CN 204476583U
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- opposed
- outer piston
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- horizontally
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Abstract
The utility model discloses the horizontally-opposed piston of a kind of two-stroke, opposed-cylinder engine outer piston, comprise an outer piston, wherein, the outer projection of the mediad at the top of described outer piston is hemispheric projection, and the outer rim at the top of described outer piston is offered two fuel oil injector bundles symmetrically and dodged groove; The inside at the top of described outer piston arranges cooling oil duct, and described cooling oil duct is positioned at the outside of described projection; The top of described outer piston and the sheathed some compression rings of the end face outside of bottom.Use the horizontally-opposed piston of a kind of two-stroke of the utility model, opposed-cylinder engine outer piston, arrange fuel oil injector bundle at the top of outer piston and dodge groove, the duel fuel injector effectively realizing oil-fired system is installed and forms in-cylinder direct injection space.Meanwhile, the compression ring of outer piston top and bottom, and the pin-and-hole end cap of piston pin hole, realize in engine piston reciprocatory movement effectively to the sealing of high-temperature high-pressure fuel gas and scavenging function.
Description
Technical field
The utility model relates to a kind of technical field of two stroke engine, particularly relates to the outer piston of the horizontally-opposed piston of a kind of two-stroke, opposed cylinder (OPOC) motor.
Background technique
Pancake engine, with the engine structure of its uniqueness and working principle, can obtain the mechanical efficiency higher than conventional engines and combustion efficiency.The particularly horizontally-opposed piston of two-stroke, opposed-cylinder engine, because of its agent structure compact (axial dimension tradition relative to total height is little with power engine), its energy density (power per liter, weight/power ratio) high technology level (>=90kW/L of the same trade can be reached, >=1.9kW/kg), its also because of this two large advantage by industry is looked steadily.
The piston of the horizontally-opposed piston of two-stroke, opposed-cylinder engine realizes except the function (transmitting pressure of explosion and motion guide) of traditional combustion engine except needing, also need in reciprocatory movement, coordinate cylinder port to complete scavenging function, and interior outer piston must coordinate the rational firing chamber of formation together, mates form good air-fuel mixture space with fuel injection system.Conventional piston structure, can not meet the demands.
Model utility content
The purpose of this utility model is the outer piston providing the horizontally-opposed piston of a kind of two-stroke, opposed-cylinder engine.
To achieve these goals, the technological scheme that the utility model is taked is:
The horizontally-opposed piston of a kind of two-stroke, opposed-cylinder engine outer piston, comprise an outer piston, wherein, the outer projection of the mediad at the top of described outer piston is hemispheric projection, and the outer rim at the top of described outer piston is offered two fuel oil injector bundles symmetrically and dodged groove; The inside at the top of described outer piston arranges cooling oil duct, and described cooling oil duct is positioned at the outside of described projection; The top of described outer piston and the sheathed some compression rings of the end face outside of bottom.
The above-mentioned horizontally-opposed piston of a kind of two-stroke, opposed-cylinder engine outer piston, wherein, sheathed two compression rings of end face outside at the top of described outer piston, the sheathed compression ring of end face outside of the bottom of described outer piston.
The above-mentioned horizontally-opposed piston of a kind of two-stroke, opposed-cylinder engine outer piston, wherein, a below also sheathed oil ring of the described compression ring of the bottom outside end face of described outer piston.
The above-mentioned horizontally-opposed piston of a kind of two-stroke, opposed-cylinder engine outer piston, wherein, the inside of described outer piston is provided with a circular flange boss.
The above-mentioned horizontally-opposed piston of a kind of two-stroke, opposed-cylinder engine outer piston, wherein, the surrounding of described flange boss arranges four bolts hole.
The above-mentioned horizontally-opposed piston of a kind of two-stroke, opposed-cylinder engine outer piston, wherein, the end face outside of described outer piston runs through offers a piston pin hole, the two ends equal mount pin nose end lid of described piston pin hole.
The utility model is owing to have employed above-mentioned technology, and the good effect making it compared with prior art to have is:
(1) arrange fuel oil injector bundle at the top of outer piston and dodge groove, the duel fuel injector that have effectively achieved oil-fired system is installed and forms in-cylinder direct injection space.
(2) circular flange boss is adopted in the inside of outer piston, and the surrounding of flange boss arranges four bolts hole, adopt flange bolt to be formed with outer piston by external T-shaped pin to be fixedly connected with, effectively alleviate quality and the reciprocal inertia force of outer piston group, realize the requirement of motor inside and outside piston group reciprocal inertia force balance.
(3) the pin-and-hole end cap of the compression ring of outer piston top and bottom, and piston pin hole, realizes in engine piston reciprocatory movement effectively to the sealing of high-temperature high-pressure fuel gas and scavenging function.
Accompanying drawing explanation
Fig. 1 is the schematical top view of embodiment one of the horizontally-opposed piston of a kind of two-stroke of the present utility model, opposed-cylinder engine outer piston;
Fig. 2 is the stereogram of embodiment one of the horizontally-opposed piston of a kind of two-stroke of the present utility model, opposed-cylinder engine outer piston;
Fig. 3 is the sectional view of embodiment one of the horizontally-opposed piston of a kind of two-stroke of the present utility model, opposed-cylinder engine outer piston;
Fig. 4 is the interior views of embodiment one of the horizontally-opposed piston of a kind of two-stroke of the present utility model, opposed-cylinder engine outer piston;
Fig. 5 is the schematical top view of embodiment two of the horizontally-opposed piston of a kind of two-stroke of the present utility model, opposed-cylinder engine outer piston;
Fig. 6 is the stereogram of embodiment two of the horizontally-opposed piston of a kind of two-stroke of the present utility model, opposed-cylinder engine outer piston;
Fig. 7 is the sectional view of embodiment two of the horizontally-opposed piston of a kind of two-stroke of the present utility model, opposed-cylinder engine outer piston;
Fig. 8 is the interior views of embodiment two of the horizontally-opposed piston of a kind of two-stroke of the present utility model, opposed-cylinder engine outer piston.
Embodiment
Below in conjunction with the drawings and specific embodiments, the utility model is described in further detail, but not as restriction of the present utility model.
Embodiment one:
Fig. 1 is the horizontally-opposed piston of a kind of two-stroke of the present utility model, the schematical top view of the embodiment one of opposed-cylinder engine outer piston, Fig. 2 is the horizontally-opposed piston of a kind of two-stroke of the present utility model, the stereogram of the embodiment one of opposed-cylinder engine outer piston, Fig. 3 is the horizontally-opposed piston of a kind of two-stroke of the present utility model, the sectional view of the embodiment one of opposed-cylinder engine outer piston, Fig. 4 is the horizontally-opposed piston of a kind of two-stroke of the present utility model, the interior views of the embodiment one of opposed-cylinder engine outer piston, refer to shown in Fig. 1 to Fig. 4.The horizontally-opposed piston of a kind of two-stroke of the present utility model, opposed-cylinder engine outer piston, comprise an outer piston 1, and the outer projection of the mediad at the top of outer piston 1 is hemispheric projection 11, control combustion chamber shape and volume together with inner carrier.The outer rim at the top of outer piston 1 is offered two fuel oil injector bundles symmetrically and is dodged groove 12, and meanwhile, dodge groove 12 not by cylinder axis, the duel fuel injector realizing oil-fired system with this is installed and formed in-cylinder direct injection space.Arrange cooling oil duct 13 in the inside at the top of outer piston 1, cooling oil duct 13 is positioned at the outside of projection 11.Due to the high power density of motor, add the heat load of piston combustion bowl, by piston cooling nozzle, lubricant oil is sprayed oil input channel, take away the heat of part, effectively reduce the temperature of piston head.The top of outer piston 1 and the sheathed some compression rings of the end face outside of bottom.
The utility model also has following mode of execution on the basis of the above:
In further embodiment of the present utility model, please continue see shown in Fig. 1 to Fig. 4.Sheathed two compression rings 14 of end face outside at the top of outer piston 1, the sheathed compression ring 15 of end face outside of the bottom of outer piston 1, realizes effective sealing and the scavenging function of engine breathing by three road compression rings.
In further embodiment of the present utility model, a below also sheathed oil ring 16 of the compression ring 15 of the bottom outside end face of outer piston 1, realizes piston, the effectively lubricating of piston ring and refrigerating function with this.
In further embodiment of the present utility model, be provided with a circular flange boss 17 in the inside of outer piston 1, and four bolts hole 18 are set in the surrounding of flange boss 17.Realize moving with external outside connecting rod by external special T-shaped pin and be connected, and effectively alleviate the reciprocation mass of outer piston group, realize the requirement of motor inside and outside piston group reciprocal inertia force balance with this.
Embodiment two:
Fig. 5 is the horizontally-opposed piston of a kind of two-stroke of the present utility model, the schematical top view of the embodiment two of opposed-cylinder engine outer piston, Fig. 6 is the horizontally-opposed piston of a kind of two-stroke of the present utility model, the stereogram of the embodiment two of opposed-cylinder engine outer piston, Fig. 7 is the horizontally-opposed piston of a kind of two-stroke of the present utility model, the sectional view of the embodiment two of opposed-cylinder engine outer piston, Fig. 8 is the horizontally-opposed piston of a kind of two-stroke of the present utility model, the interior views of the embodiment two of opposed-cylinder engine outer piston, refer to shown in Fig. 5 to Fig. 8.The horizontally-opposed piston of a kind of two-stroke of the present utility model, opposed-cylinder engine outer piston, comprise an outer piston 2, and the outer projection of the mediad at the top of outer piston 2 is hemispheric projection 21, control combustion chamber shape and volume together with inner carrier.The outer rim at the top of outer piston 2 is offered two fuel oil injector bundles symmetrically and is dodged groove 22, meanwhile, dodges groove 22 not by cylinder axis, installs and in-cylinder direct injection space with the duel fuel injector that this realizes oil-fired system.Arrange cooling oil duct 23 in the inside at the top of outer piston 2, cooling oil duct 23 is positioned at the outside of projection 21.Due to the high power density of motor, add the heat load of piston combustion bowl, by piston cooling nozzle, lubricant oil is sprayed oil input channel, take away the heat of part, effectively reduce the temperature of piston head.The top of outer piston 2 and the sheathed some compression rings of the end face outside of bottom.
The utility model also has following mode of execution on the basis of the above:
In further embodiment of the present utility model, please continue see shown in Fig. 5 to Fig. 8.Sheathed two compression rings 24 of end face outside at the top of outer piston 2, the sheathed compression ring 25 of end face outside of the bottom of outer piston 2, realizes effective sealing and the scavenging function of engine breathing by three road compression rings.
In further embodiment of the present utility model, a below also sheathed oil ring 26 of the compression ring 25 of the bottom outside end face of outer piston 2, realizes piston, the effectively lubricating of piston ring and refrigerating function with this.
In further embodiment of the present utility model, run through in the end face outside of outer piston 2 and offer a piston pin hole 27, at the two ends of piston pin hole 27 equal mount pin nose end lid 28, a sealing area is formed by pin-and-hole end cap 28 together with upper lower air ring with this, meet the normal scavenging process of motor, meanwhile, the amount of collaborating of piston is reduced.
The foregoing is only the utility model preferred embodiment; not thereby mode of execution of the present utility model and protection domain is limited; to those skilled in the art; should recognize and all should be included in the scheme that equivalent replacement done by all utilization the utility model specifications and diagramatic content and apparent change obtain in protection domain of the present utility model.
Claims (6)
1. the horizontally-opposed piston of two-stroke, an opposed-cylinder engine outer piston, comprise an outer piston, it is characterized in that,
The outer projection of the mediad at the top of described outer piston is hemispheric projection, and the outer rim at the top of described outer piston is offered two fuel oil injector bundles symmetrically and dodged groove;
The inside at the top of described outer piston arranges cooling oil duct, and described cooling oil duct is positioned at the outside of described projection;
The top of described outer piston and the sheathed some compression rings of the end face outside of bottom.
2. the horizontally-opposed piston of two-stroke, opposed-cylinder engine outer piston according to claim 1, is characterized in that, sheathed two compression rings of end face outside at the top of described outer piston, the sheathed compression ring of end face outside of the bottom of described outer piston.
3. the horizontally-opposed piston of two-stroke, opposed-cylinder engine outer piston according to claim 2, is characterized in that, a below also sheathed oil ring of the described compression ring of the bottom outside end face of described outer piston.
4. the horizontally-opposed piston of two-stroke, opposed-cylinder engine outer piston according to claim 1, it is characterized in that, the inside of described outer piston is provided with a circular flange boss.
5. the horizontally-opposed piston of two-stroke, opposed-cylinder engine outer piston according to claim 4, it is characterized in that, the surrounding of described flange boss arranges four bolts hole.
6. the horizontally-opposed piston of two-stroke, opposed-cylinder engine outer piston according to claim 1, it is characterized in that, the end face outside of described outer piston runs through offers a piston pin hole, the two ends equal mount pin nose end lid of described piston pin hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520077183.7U CN204476583U (en) | 2015-02-03 | 2015-02-03 | The horizontally-opposed piston of a kind of two-stroke, opposed-cylinder engine outer piston |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520077183.7U CN204476583U (en) | 2015-02-03 | 2015-02-03 | The horizontally-opposed piston of a kind of two-stroke, opposed-cylinder engine outer piston |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204476583U true CN204476583U (en) | 2015-07-15 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520077183.7U Expired - Fee Related CN204476583U (en) | 2015-02-03 | 2015-02-03 | The horizontally-opposed piston of a kind of two-stroke, opposed-cylinder engine outer piston |
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| Country | Link |
|---|---|
| CN (1) | CN204476583U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106014677A (en) * | 2016-08-04 | 2016-10-12 | 广西玉柴机器股份有限公司 | Piston of engine |
| WO2019050804A1 (en) * | 2017-09-07 | 2019-03-14 | Achates Power, Inc. | Piston assembly with opposing injection regions for an opposed-piston engine |
-
2015
- 2015-02-03 CN CN201520077183.7U patent/CN204476583U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106014677A (en) * | 2016-08-04 | 2016-10-12 | 广西玉柴机器股份有限公司 | Piston of engine |
| WO2019050804A1 (en) * | 2017-09-07 | 2019-03-14 | Achates Power, Inc. | Piston assembly with opposing injection regions for an opposed-piston engine |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150715 Termination date: 20190203 |
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| CF01 | Termination of patent right due to non-payment of annual fee |