CN102713153A - Sealing system for sliding sleeves for controlling gas exchange in internal combustion engines - Google Patents
Sealing system for sliding sleeves for controlling gas exchange in internal combustion engines Download PDFInfo
- Publication number
- CN102713153A CN102713153A CN2010800616850A CN201080061685A CN102713153A CN 102713153 A CN102713153 A CN 102713153A CN 2010800616850 A CN2010800616850 A CN 2010800616850A CN 201080061685 A CN201080061685 A CN 201080061685A CN 102713153 A CN102713153 A CN 102713153A
- Authority
- CN
- China
- Prior art keywords
- sliding sleeve
- sealing
- sealing seat
- seat
- internal combustion
- Prior art date
- 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.)
- Pending
Links
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
- F01L7/00—Rotary or oscillatory slide valve-gear or valve arrangements
- F01L7/02—Rotary or oscillatory slide valve-gear or valve arrangements with cylindrical, sleeve, or part-annularly shaped valves
- F01L7/04—Rotary or oscillatory slide valve-gear or valve arrangements with cylindrical, sleeve, or part-annularly shaped valves surrounding working cylinder or piston
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- A—HUMAN NECESSITIES
- A45—HAND OR TRAVELLING ARTICLES
- A45B—WALKING STICKS; UMBRELLAS; LADIES' OR LIKE FANS
- A45B19/00—Special folding or telescoping of umbrellas
- A45B19/04—Special folding or telescoping of umbrellas with telescopic sticks
-
- A—HUMAN NECESSITIES
- A45—HAND OR TRAVELLING ARTICLES
- A45B—WALKING STICKS; UMBRELLAS; LADIES' OR LIKE FANS
- A45B25/00—Details of umbrellas
- A45B25/02—Umbrella frames
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
- F01L5/00—Slide valve-gear or valve-arrangements
- F01L5/04—Slide valve-gear or valve-arrangements with cylindrical, sleeve, or part-annularly shaped valves
- F01L5/06—Slide valve-gear or valve-arrangements with cylindrical, sleeve, or part-annularly shaped valves surrounding working cylinder or piston
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
- F01L5/00—Slide valve-gear or valve-arrangements
- F01L5/24—Component parts, details or accessories, not provided for in preceding subgroups in this group
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
- F01L7/00—Rotary or oscillatory slide valve-gear or valve arrangements
- F01L7/16—Sealing or packing arrangements specially therefor
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J10/00—Engine or like cylinders; Features of hollow, e.g. cylindrical, bodies in general
- F16J10/02—Cylinders designed to receive moving pistons or plungers
- F16J10/04—Running faces; Liners
-
- A—HUMAN NECESSITIES
- A45—HAND OR TRAVELLING ARTICLES
- A45B—WALKING STICKS; UMBRELLAS; LADIES' OR LIKE FANS
- A45B25/00—Details of umbrellas
- A45B25/10—Umbrella crowns
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
- F02B75/00—Other engines
- F02B75/28—Engines with two or more pistons reciprocating within same cylinder or within essentially coaxial cylinders
- F02B75/282—Engines with two or more pistons reciprocating within same cylinder or within essentially coaxial cylinders the pistons having equal strokes
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Pistons, Piston Rings, And Cylinders (AREA)
- Lift Valve (AREA)
- Valve Device For Special Equipments (AREA)
Abstract
The invention relates to a sealing system for sliding sleeves for controlling gas exchange in internal combustion engines. Said sealing system is designed such that the pressure on the sealing seat of the sliding sleeve increases when the gas pressure increases, which is similar to that of common valves in internal combustion engines. This is obtained by means of a pressure stage on the inner diameter in the region of the sealing seat of the sliding sleeve. As a result, the maximum outer diameter of the sealing seat does not exceed the inner diameter of the piston running surface of the sliding sleeve, the closing pressure acting upon the sliding sleeve being equal to or greater than the maximum possible opening pressure acting upon the sliding sleeve even when the sealing seat is subjected to a total gas pressure.
Description
Technical field
The present invention is specially adapted to the application in opposed piston engine, the air distribution port of the importing of said opposed piston engine and derivation work done gas, or passage is arranged in the zone of piston upper dead center.Be known that (DE-A-1906542) exchanges through the sliding sleeve control gaseous in internal-combustion engine.It is also known that (DE202005021624U1 and DE202006020546U1), avoid the slit overflow of piston through this sliding sleeve of the exchange of control gaseous in opposed piston engine.At this, not only can be in the two stroke operation process but also can in the four-stroke working procedure, realize the control time arbitrarily.Certainly,, form sliding sleeve with respect to sealing reliably, because particularly in diesel engine, in the compression of work done gas with occur high pressure between the phase of expansion through the importing of said sliding sleeve control and the gas channel of derivation on this particular importance ground.
Background technique
Yet,, can not be used for the known cylinder seal of laterally mobile piston owing to the reason on the space by piston ring with respect to the gas pressure sealing for sliding sleeve.Otherwise, perhaps consider the structure similar at this with valve, that is to say that sliding sleeve has the sealing seat of taper at the rib place of its control channel opening, perhaps said sliding sleeve is as passing through covering closed channel opening known in the guiding valve distribution.From foregoing invention (DE202005021624U1 and DE202006020546U1), it is also known that, use two kinds of sealing ways simultaneously.
Cross opening through the control rib of sliding sleeve and have following shortcoming: only do not seal said opening fully with respect to higher pressure, guarantee the mobility of said sliding sleeve because sliding sleeve needs minimum clearance.In addition, must keep coverage distance short, so that avoid the big stroke and the friction of sliding sleeve.When slow speed, can reveal a large amount of gases especially owing to the slit that keeps inevitably.
Have distolateral structural type be different with common valve on function of valve seat type sealing of the sliding sleeve of consecutive identical internal diameter, gas pressure can not be applied to closing force on the sealing surface.On the contrary, when sealing is not when sealing all sidedly, the gas that is in so pressure under can enter into formed slit, and attempts thus, can push the expansion of said slit open sliding sleeve or the blow-by more that becomes at least.
Summary of the invention
Therefore, according to the objective of the invention is to, gas pressure is used as the auxiliary force that keeps sliding sleeve closed through structural measure.
According to the present invention, this realizes that through the pressure ladder in the internal diameter at sliding sleeve in the end region of sealing the seal outer diameter of sealing is less than the internal diameter that the pressure effect is arranged of sliding sleeve in other words.Realize that through said structure the power of closed sleeve is greater than the power of opening sleeve.Because have the zone that the sealing seat of pressure ladder is arranged in the fire-resistant root face of piston, when piston was arranged in upper dead center, for fear of collision, the piston diameter in said zone must be less than the internal diameter of sealing seat.Because actual cause, it is removable being in that sealing seat in the cylinder can constitute.Therefore, similar with traditional valve seat, can use the good material that is fit to.
With in that to have different stem material similar with the Bimetallic valve of the routine of valve disc material, in the sealing area of control sleeve, can use material different with body material, that be fit to more.When using the conventional cylinder sleeve material with good sliding properties when the part of sliding with in the zone by piston and piston ring overlapping, sliding sleeve can be processed by high-intensity and heat-resisting material in the zone of its sealing surface motivatedly.As in the valve of routine, material different can connect through friction welding, electron beam welding or other connecting means that is fit to.Advantage with said structural type of different materials is higher intensity and heat resistance.
Embodiment
Fig. 1 illustrates the cross section that traverses opposed piston engine.In by two crankcases 3 and 4 and two motor bodies of forming through cylinder middleware 7 cylinder half ones 5 connected to one another and 6, two pistons 1 and 2 oppositely motions each other.These pistons are through two bent axles 8 and 9 and connecting rod 10 and 11 drivings.Said piston to move through gear driver 12 synchronous.Piston turns round in sliding sleeve 13 and 14, this channeling conduct movably in cylinder half one 5 and 6 of said sliding sleeve.Through moving of said sliding sleeve, the gas channel 15 and 16 of annular is open and close independently of one another.
Fig. 2 illustrates the details of aforementioned cross section in the sealing area of sliding sleeve 13 and 14.Sliding sleeve 13 illustrates with the state of opening, and sliding sleeve 14 illustrates under the state of closure.The sealing seat that is used for sliding sleeve is installed in cylinder middleware 7, and constitutes the sealing seat 15 and 16 of taper, be installed in respectively conical seal (contact) face on the end of sealing of sliding sleeve in the closed state held on said sealing seat.On the internal diameter 18 formed ring surfaces of internal diameter through sliding sleeve 17 and sealing seat, bear gas pressure respectively, also in sliding sleeve, have said gas pressure during the power stroke.Said pressure bears against sliding sleeve in seat.Under closed state, the end of the sealing of sliding sleeve is moved in the auxiliary section 19 a bit of, and said auxiliary section is used to support the hermetic terminal of sliding sleeve, and avoids said auxiliary section because the cracking of high gas pressure.The condition that is used for predetermined function is that the sealing seat external diameter is not more than the internal diameter of sliding sleeve, and is sufficiently exitted in the space after sealing seat, makes in packing less seat, not form pressure there.Be installed in the purpose that the groove 20 of some locational parts of the circumference of auxiliary section 19 is used to exit.
Fig. 3 illustrates the instance of removable seat ring 21, and said seat ring keeps through flange 22 and 23, and said flange is fixing by means of screw 24.The advantage that said embodiment has is, can be the material that seat ring 21 is selected best-fits, and irrelevant with the material of cylinder middleware 7.What also illustrate is, the having the distolateral of sealing surface and can constitute parts 25 independent, optimization of material of sliding sleeve, and said parts and sliding sleeve are permanently connected.
Claims (6)
1. be used for carrying out the sealing configuration of the sliding sleeve of gas exchange control at internal-combustion engine; It is characterized in that; Said sliding sleeve has the sealing area that stepped shaft constitutes on its sealing distolateral, make the external diameter of sealing seat be equal to or less than the internal diameter that is used to guide piston of said sliding sleeve.
2. the sealing configuration that is used for sliding sleeve according to claim 1 is characterized in that said sealing seat constitutes taper.
3. according to claim 1 and the 2 described sealing configurations that are used for sliding sleeve, it is characterized in that be installed in said sealing seat in the cylinder and be designed to removablely, said sliding sleeve is placed on the said sealing seat under closed state.
4. according to the described sealing configuration that is used for sliding sleeve of claim 1 to 3; It is characterized in that; The said sealing seat that is installed in the said cylinder is processed by being different from material said cylinder, suitable, and said sliding sleeve is placed on the said sealing seat under closed state.
5. according to the described sealing configuration that is used for sliding sleeve of claim 1 to 4, it is characterized in that, said sliding sleeve in the zone of its sealing surface by other, correspondingly the material of adaptive functions purpose is processed.
6. the sealing configuration that is used for sliding sleeve according to claim 5 is characterized in that, the parts of being processed by other materials of said sliding sleeve are permanently connected through electron beam welding or laser bonding and said sliding sleeve.
Applications Claiming Priority (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102009053720A DE102009053720A1 (en) | 2009-11-18 | 2009-11-18 | Sealing device for sealing sliding sleeve utilized for gas exchange control in opposed-piston diesel engine, has sealing seat whose outer diameter is equal to or smaller than inner diameter of sleeve serving for piston guide |
| DE202009017640.1 | 2009-11-18 | ||
| DE202009017640U DE202009017640U1 (en) | 2009-11-18 | 2009-11-18 | Seal design for sliding bushes for gas exchange control in internal combustion engines |
| DE102009053720.1 | 2009-11-18 | ||
| PCT/EP2010/067578 WO2011061189A2 (en) | 2009-11-18 | 2010-11-16 | Sealing system for sliding sleeves for controlling gas exchange in internal combustion engines |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102713153A true CN102713153A (en) | 2012-10-03 |
Family
ID=44060108
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010800616850A Pending CN102713153A (en) | 2009-11-18 | 2010-11-16 | Sealing system for sliding sleeves for controlling gas exchange in internal combustion engines |
Country Status (5)
| Country | Link |
|---|---|
| EP (1) | EP2501900A2 (en) |
| JP (1) | JP2013511639A (en) |
| CN (1) | CN102713153A (en) |
| DE (1) | DE202009017640U1 (en) |
| WO (1) | WO2011061189A2 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103228877A (en) * | 2010-10-08 | 2013-07-31 | 品纳科动力有限公司 | Internal combustion engine valve actuation and adjustable lift and timing |
| WO2012142530A1 (en) * | 2011-04-15 | 2012-10-18 | Pinnacle Engines, Inc. | Opposed piston engine with non-collinear axes of translation |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1502291A (en) * | 1920-09-07 | 1924-07-22 | George E Conway | Valve for motors |
| US2097741A (en) * | 1935-02-05 | 1937-11-02 | Schmid Ernst | Valve mechanism in internal combustion engines of the opposed piston type |
| US2105272A (en) * | 1935-02-05 | 1938-01-11 | Schmid Ernst | Sleeve valve for a four stroke opposed piston engine |
| GB497300A (en) * | 1937-09-14 | 1938-12-16 | Richard Porkman | Improvements in or relating to internal combustion engines of the opposed piston type |
| US3084678A (en) * | 1960-04-15 | 1963-04-09 | Maurice E Lindsay | Internal combustion engine with shifting cylinders |
| GB1015189A (en) * | 1963-03-20 | 1965-12-31 | Maurice Eustace Lindsay | Improvements in or relating to internal combustion engines |
| DE1906542A1 (en) | 1969-02-10 | 1971-02-11 | Elsbett G | Internally cooled four-stroke diesel engine with heat-insulated combustion chamber in the piston |
| DE102004032452A1 (en) | 2004-07-05 | 2006-01-26 | Daude, Otto, Dr.-Ing. | Gas exchange control for piston engines |
| DE202006020546U1 (en) | 2005-07-08 | 2009-01-08 | Daude, Otto, Dr.-Ing. | Piston engines with sliding bushes and gas exchange control |
-
2009
- 2009-11-18 DE DE202009017640U patent/DE202009017640U1/en not_active Expired - Lifetime
-
2010
- 2010-11-16 JP JP2012539302A patent/JP2013511639A/en active Pending
- 2010-11-16 WO PCT/EP2010/067578 patent/WO2011061189A2/en active Application Filing
- 2010-11-16 EP EP10781664A patent/EP2501900A2/en not_active Withdrawn
- 2010-11-16 CN CN2010800616850A patent/CN102713153A/en active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| JP2013511639A (en) | 2013-04-04 |
| EP2501900A2 (en) | 2012-09-26 |
| DE202009017640U1 (en) | 2010-07-01 |
| WO2011061189A2 (en) | 2011-05-26 |
| WO2011061189A3 (en) | 2011-09-15 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20121003 |