CN201568154U - Internal combustion engine piston capable of outwardly discharging waste gas in combustion chamber - Google Patents
Internal combustion engine piston capable of outwardly discharging waste gas in combustion chamber Download PDFInfo
- Publication number
- CN201568154U CN201568154U CN2009202665818U CN200920266581U CN201568154U CN 201568154 U CN201568154 U CN 201568154U CN 2009202665818 U CN2009202665818 U CN 2009202665818U CN 200920266581 U CN200920266581 U CN 200920266581U CN 201568154 U CN201568154 U CN 201568154U
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- China
- Prior art keywords
- piston
- piston head
- waste gas
- combustion chamber
- head
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Abstract
The utility model relates to a piston which burns high temperature residual gas in a combustion chamber at the ending of exhausting and also can discharge most of the residual gas outside a cylinder, and comprises a main piston, a piston head and a spring, wherein the piston head can stretch on the main piston, and the spring is arranged between the main piston and the piston head. The structural characteristics are that the top portion of a cylindrical main piston is provided with a retractable moving piston, and a piston ring is arranged on the piston head.
Description
Technical field:
The utility model is applied to reciprocating piston type gasoline engine.
Background technique:
Present internal-combustion engine is because certain volume is occupied in the firing chamber, and in exhaust at the end, the high temperature residual gas that can stay combustion chamber volume in the cylinder can not efflux, and makes air-breathingly at the end to make mixture temperature higher owing to the existence of high temperature residual gas; The minimizing exhaust at the end interior high temperature residual volume of cylinder is that everybody generally acknowledges a method that can improve engine efficiency.
Summary of the invention:
The purpose of this utility model provide a kind of exhaust at the end in the firing chamber high temperature residual gas also can most ofly discharge the outer piston of cylinder, to reduce cylinder suction temperature at the end, improve engine efficiency.Engine piston by this purpose design comprises main piston and the piston head that can stretch on main piston; Its structure characteristic is that cylindrical main piston top is provided with a telescopic piston head, and piston ring is located on the piston head; Be provided with spring between main piston and the piston head.
Below the engine cylinder cover of this purpose setting is the plane, and intake valve is vertical with the plane below the cylinder head with the moving direction of exhaust valve; When intake valve, exhaust valve closing, intake valve, exhaust valve become same plane with the cylinder head lower plane.When main piston went upward to peak, piston head extended the longest under the effect of spring force and itself coherence power at the exhaust stroke rear, touch mutually with cylinder head, to drain waste gas; When main piston went upward to peak, piston head contracted to the shortest under the powerful pressure of gas in the jar at the compression stroke rear, promptly joined with main piston, and the space between piston head compressing surface and the cylinder head is the firing chamber.
Described piston head adds coherence power and the spring force sum that piston ring produced in the compression stroke last moment and is less than the pressure of instant gas in the jar to the piston head compressing surface.
One ignition tip depression is set, for ignition tip provides the space at the exhaust stroke rear in the middle of the described piston head compressing surface.
Described piston head is provided with the valve depression in exhaust valve position, for exhaust valve provides the space at the exhaust stroke rear.
The outer bottom of described piston head is provided with four legs, and the leg afterbody is provided with blocking blade with the flexible stroke of control piston head.
Described main piston exocoel has four grooves, and the groove upper semisection is little, lower semisection is big.Upper semisection groove size matches with the piston head leg, and lower semisection groove size matches with the leg blocking blade.
Be provided with the oblique air guide bar of three projectioies in the described piston head intermediate recess, to form swirling eddy.
Surface of contact between described piston head and the main piston is set to identical mutually conical surface.
Described main piston and piston head surface of contact are non-tight, so that the piston head cooling.
Description of drawings:
Fig. 1 is this new structure schematic representation.
Fig. 2 is the main piston schematic top plan view.
Fig. 3 is the piston head schematic representation.
Fig. 4 is the main piston schematic representation.
Fig. 5 is piston head leg and blocking blade schematic representation.
Fig. 6 is a main piston exocoel groove schematic representation.
Fig. 7 is the work schematic representation.
Embodiment:
Below in conjunction with accompanying drawing the utility model is further described.
Referring to Fig. 1-Fig. 6, this piston is made up of piston head (1) and main piston (2), is provided with ignition tip depression (3) and valve depression (4) in the middle of piston head (1) compressing surface, and the limit is provided with piston ring groove (5); The outer bottom of piston head is provided with leg (6), and the leg end is provided with blocking blade (7).Main piston (2) middle part is provided with piston pin hole (13), and exocoel is provided with groove (8), and groove (8) upper semisection size matches with piston head leg (6), and the lower semisection size matches with blocking blade (7).
Piston head bottom surface (10) is set to identical mutually conical surface with main piston end face (11).
Be provided with cylindrical bore (9) with shock mount (12) in piston head (1) and the main piston (2).
Piston head (1) is connected by leg (6), blocking blade (7) with main piston (2), and can make the flexible of preset length under external force.
Claims (3)
1. internal combustion engine that can efflux waste gas of combustion chamber, comprise cylindrical main piston (2) and piston head (1) and the spring between them (12), its structure characteristic is that cylindrical main piston (2) top is provided with a telescopic piston head (1), main piston (2) and piston head (1) are by being connected with piston head leg (6), blocking blade (7), and piston head (1) can be made the flexible of preset length with main piston (2).
2. the internal combustion engine that effluxes waste gas of combustion chamber according to claim 1 is characterized in that being provided with ignition tip depression (3) in the middle of described piston head (1) compressing surface.
3. the internal combustion engine that effluxes waste gas of combustion chamber according to claim 1 is characterized in that described piston head bottom surface (10) and the conical surface of main piston end face (11) for coincideing mutually.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202665818U CN201568154U (en) | 2009-11-12 | 2009-11-12 | Internal combustion engine piston capable of outwardly discharging waste gas in combustion chamber |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202665818U CN201568154U (en) | 2009-11-12 | 2009-11-12 | Internal combustion engine piston capable of outwardly discharging waste gas in combustion chamber |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201568154U true CN201568154U (en) | 2010-09-01 |
Family
ID=42660439
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009202665818U Expired - Fee Related CN201568154U (en) | 2009-11-12 | 2009-11-12 | Internal combustion engine piston capable of outwardly discharging waste gas in combustion chamber |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201568154U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104838124A (en) * | 2012-09-26 | 2015-08-12 | 乔治·弗里德里克·高尔文 | Piston |
| CN105952547A (en) * | 2016-06-16 | 2016-09-21 | 徐州弦波引擎机械科技有限公司 | Length-variable engine piston |
| CN110360021A (en) * | 2018-10-19 | 2019-10-22 | 广州宏大动力科技有限公司 | The elongated piston of elasticity and its design and production method |
-
2009
- 2009-11-12 CN CN2009202665818U patent/CN201568154U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104838124A (en) * | 2012-09-26 | 2015-08-12 | 乔治·弗里德里克·高尔文 | Piston |
| CN105952547A (en) * | 2016-06-16 | 2016-09-21 | 徐州弦波引擎机械科技有限公司 | Length-variable engine piston |
| CN110360021A (en) * | 2018-10-19 | 2019-10-22 | 广州宏大动力科技有限公司 | The elongated piston of elasticity and its design and production method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100901 Termination date: 20111112 |