EP0635095B1 - Drehschieberventil - Google Patents
Drehschieberventil Download PDFInfo
- Publication number
- EP0635095B1 EP0635095B1 EP94906168A EP94906168A EP0635095B1 EP 0635095 B1 EP0635095 B1 EP 0635095B1 EP 94906168 A EP94906168 A EP 94906168A EP 94906168 A EP94906168 A EP 94906168A EP 0635095 B1 EP0635095 B1 EP 0635095B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- shaft
- passage
- axis
- bore
- rotary slide
- 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.)
- Expired - Lifetime
Links
Images
Classifications
-
- 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
- F01L7/026—Rotary or oscillatory slide valve-gear or valve arrangements with cylindrical, sleeve, or part-annularly shaped valves with two or more rotary valves, their rotational axes being parallel, e.g. 4-stroke
-
- 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
- F02B75/02—Engines characterised by their cycles, e.g. six-stroke
- F02B2075/022—Engines characterised by their cycles, e.g. six-stroke having less than six strokes per cycle
- F02B2075/025—Engines characterised by their cycles, e.g. six-stroke having less than six strokes per cycle two
-
- 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
- F02B75/02—Engines characterised by their cycles, e.g. six-stroke
- F02B2075/022—Engines characterised by their cycles, e.g. six-stroke having less than six strokes per cycle
- F02B2075/027—Engines characterised by their cycles, e.g. six-stroke having less than six strokes per cycle four
Definitions
- the invention relates to a rotary slide valve according to the preamble of claim 1.
- a rotary slide valve is known from DE-A-20 62 323.
- This rotary valve represents the intake valve in a two-stroke engine.
- the rotatable in the cylinder head mounted shaft has a through hole that over a predetermined Rotation range of the shaft a cylinder-side channel with one to the cylinder space leading bore connects,
- the rotary slide valve rotates with the same Speed like the crankshaft of the two-stroke engine. Because the filling of the cylinder with fresh charge is relatively bad, is between carburetor and rotary valve single or multi-stage turbine interposed.
- Rotary slide valves Another two-stroke engine with rotary slide valves is DE-A-38 21 617 removable.
- two rotary slide valves are provided on the inlet side Control times overlap with each other, one of the valves supplying the purge air and the other serves to supply the charge air.
- the wave of Rotary slide valves have approximately half-moon shape to form a passage on.
- An exhaust valve in the form of a rotary slide valve in a two-stroke engine is Subject of FR-A-25 31 139.
- the shaft has a bore as a passage.
- a rotary slide valve with the features of the preamble of claim 1 is the US-A-4 381 737 removable,
- the passage penetrating the shaft runs at right angles to the shaft axis, so that with a full shaft revolution the passage twice the channel in the cylinder head with the channel leading to the cylinder chamber Hole connects.
- the angular ranges of a related to the shaft axis The passage opening and the bore are approximately 55 °.
- FR-A-2 662 214 describes a rotary slide valve in a two-stroke engine, the Shaft rotates at the same speed as the crankshaft and over it Fuel-air mixture is supplied to the cylinder chamber.
- the one penetrating the wave Passage runs obliquely to the shaft axis and has one in the region of the channel circular cross-section on the one running in the direction of the shaft axis slot and wedge-shaped cross-section merges in the area of the bore.
- the wave is in Movable in the direction of the shaft axis.
- the slot-like leading to the cylinder space Bore is transverse to the shaft axis.
- US-A-5 105 784 shows a rotary slide valve with a shaft penetrating one Passage that is perpendicular to the shaft axis and in the direction of the shaft axis is slit and wedge-shaped. The one that can be moved in the direction of the shaft axis The shaft rotates once every four crankshaft revolutions.
- the Slit-like bore leading cylinder space arranged transversely to the shaft axis.
- the task is to improve the rotary slide valve so that long Valve opening times are achievable, which are over 180 crankshaft degrees extend.
- FIG. 1 there is a cylinder 1, a cylinder head 2 and a piston 3.
- a first rotary slide valve 4 is rotatably mounted, which as Inlet valve is formed.
- the cylinder head 2 rotatably supports a second one Rotary slide valve 5, which is designed as an outlet valve, the rotary slide valve 4 has a shaft 6 with a passage 7.
- the shaft 6 is in the cylinder head 2 stored sealed.
- the rotary slide valve 5 also has a shaft 8 which is sealed in the cylinder head 2 and also has a passage 23 of which only its axis 9 is shown in Figure 1.
- the cylinder head 2 is with a first Provide channel 10 through which the fuel-air mixture is supplied.
- the cylinder head 2 has a side opposite the channel 10 to the cylinder. respectively.
- Combustion chamber 11 leading bore 12 is also in the cylinder head there is a further duct 13 which discharges the exhaust gases, and a further duct opposite bore 14 leading to the cylinder space 11.
- Both shafts 6, 8 are from the crankshaft (not shown) of the engine driven and run half the speed of the crankshaft. In the illustrated In the exemplary embodiment, the shaft 6 rotates counterclockwise while the shaft 8 turns clockwise.
- the axis 15 of the passage 7 extends obliquely to Axis 16 of the shaft 6 and intersects it.
- the inclined position of axis 15 is selected that the right edge 17 of a passage opening 18 to the opposite left Edge 19 of the other passage opening 20 in the direction of the shaft axis 16 at a distance is staggered. This distance is designated by 22 in FIG.
- sealing elements 21 On both sides of the Passage openings 18, 20 and between the passage openings 18, 20 both in radial and axial directions are schematically shown sealing elements 21 provided that a sealing of the through openings against each other and after effect outside.
- the passage 7 is in the projection direction for the sake of clarity A shown.
- the passage 23 of the rotary slide valve 5 has an axis 9 with an inclined position like that Axis 15.
- the shaft 6 connects in the rotational position shown the passage 7 the channel 10 with the bore 12. Is the shaft 6 opposite the channel 10 and the bore 12 rotated, then there is no connection between the channel and Hole available.
- the passage openings 18, 20 each an angle ⁇ and the opening 12 an angle ⁇ , also based on the Shaft axis 16, this means that with a full rotation of the shaft 6 the Channel 10 and the opening 12 are connected via the passage 7 when the Wave 6 passes through an angular path ⁇ plus ⁇ .
- the bores 12, 14 are slit-shaped in the direction of the shaft axes 16.
- the passages 7, 23 are also slit-like in the direction of the shaft axes 16 educated.
- the minimum passage cross section must not be smaller than that Passage cross section of the holes 12 and 14 respectively.
- the shaft 6 is in the direction of Axis 16 slidable. This shift can be done electronically depending on the Operating parameters of the engine can be controlled.
- the angle ⁇ plus ⁇ is therefore greater than 90 °. Since slot-like bores 12, 14 and slot-like passages 7, 23 are achieved in that the Rotary slide valves 4, 5 open very quickly and ⁇ over most of the angle of rotation plus ⁇ are fully open.
- the shafts 6, 8 are preferably made of a ceramic material. This can also be for the bearings of the shafts 6, 8 in the cylinder head 2 be the case.
- the slot-like passages 7, 23 are wedge-shaped, which means that the Axial displacement of the shaft 6, 8 is possible, the opening and closing times of the Rotary slide valves 4, 5 to change what takes place depending on the engine parameters. This is shown schematically in FIG. 6, where the shaft 6 is opposite the bore 12 is moved.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Valve-Gear Or Valve Arrangements (AREA)
- Fire-Extinguishing By Fire Departments, And Fire-Extinguishing Equipment And Control Thereof (AREA)
- Taps Or Cocks (AREA)
- Multiple-Way Valves (AREA)
Description
- Fig. 1
- einen Schnitt durch einen Zylinder mit Zylinderkopf in schematischer Darstellung zu Beginn des Ansaugtakts;
- Fig. 2
- einen der Figur 1 entsprechenden Schnitt in der Mitte des Verdichtungshubes;
- Fig. 3
- einen der Figur 1 entsprechenden Schnitt in der Mitte des Arbeitshubes;
- Fig. 4
- einen der Figur 1 entsprechenden Schnitt in einer Stellung zu Beginn des Auspufftakts;
- Fig. 5
- einen Schnitt durch diese Welle und
- Fig. 6
- eine Draufsicht auf diese Welle.
Claims (3)
- Drehschieberventil bei einem kolbenbetriebenen Verbrennungsmotor, das eine im Zylinderkopf (2) drehbar gelagerte Welle (6, 8) aufweist, die mit einem die Welle (6, 8) durchdringenden Durchlaß (7, 23) versehen ist, der bei der Drehung der Welle (6, 8) in einem Drehbereich eine Verbindung zwischen einem im Zylinderkopf (2) verlaufenden Kanal (10, 13) und einer zum Zylinderraum führenden Bohrung (12, 14) im Zylinderkopf (2) herstellt, jeweils auf die Wellenachse (16) bezogen eine die Bohrung (12, 14) überstreichende Durchlaßöffnung (18) einen Winkelbereich (a) einnimmt, der größer ist als der Winkelbereich (β) der Bohrung (12, 14), der Durchlaß (7, 23) und die Bohrung (12, 14) in Richtung der Wellenachse (16) schlitzförmig ausgebildet sind, die Wandungen des Durchlasses (7, 23) sich mittig verjüngen und der minimale Durchlaßquerschnitt hierbei nicht kleiner ist als der Durchlaßquerschnitt der Bohrung (12, 14), und die Welle (6, 8) beidseits der Durchlaßöffnungen (18, 20) und zwischen den Durchlaßöffnungen (18, 20) längs und quer zur Wellenachse (16) abgedichtet im Zylinderkopf (2) gelagert ist, dadurch gekennzeichnet, daß der Verbrennungsmotor ein Viertaktverbrennuugsmotor ist, der Durchlaß (7, 23) schräg zur Wellenachse (16) verläuft und hierbei die eine Durchlaßöffhung (18) zur gegenüberliegenden Durchlaßöffnung (20) in Richtung der Wellenachse (16) so versetzt angeordnet ist, daß bei einer vollen Wellenumdrebung nur einmal eine Verbindung zwischen dem Kanal (10, 13) und der Bohrung (12, 14) entsteht, die Welle (6, 8) mit der halben Drehzahl der Kurbelwelle des Motors sich dreht, die die Bohrung (12, 14) überstreichende Durchlaßöffnung (18) zusammen mit dem an der Welle (6, 8) anliegenden Bereich der Bohrung (12, 14) bezogen auf die Wellenachse (16) einen Winkelbereich (α plus β) einschließt, der mehr als 90° beträgt, der Durchlaß (7, 23) und die Bohrung (12, 14) in gleicher Richtung der Wellenachse (16) verlaufend keilförmig ausgebildet sind, und die Welle (6, 8) in Richtung der Wellenachse (16) verschiebbar ist.
- Drehschieberventil nach Anspruch 1, dadurch gekennzeichnet, daß die Welle (6, 8) aus einem keramischen Material besteht.
- Drehschieberventil nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß die Wellenlagerung aus einem keramischen Material besteht.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE4302648A DE4302648A1 (de) | 1993-01-30 | 1993-01-30 | Drehschieberventil |
DE4302648 | 1993-01-30 | ||
PCT/EP1994/000249 WO1994017287A1 (de) | 1993-01-30 | 1994-01-28 | Drehschieberventil |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0635095A1 EP0635095A1 (de) | 1995-01-25 |
EP0635095B1 true EP0635095B1 (de) | 1999-04-14 |
Family
ID=6479295
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP94906168A Expired - Lifetime EP0635095B1 (de) | 1993-01-30 | 1994-01-28 | Drehschieberventil |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP0635095B1 (de) |
DE (2) | DE4302648A1 (de) |
ES (1) | ES2132379T3 (de) |
WO (1) | WO1994017287A1 (de) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19949857A1 (de) * | 1999-10-15 | 2001-04-19 | Christoph Conradty | Viertaktverbrennungsmotor mit einem Drehschieberventil |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5361739A (en) * | 1993-05-12 | 1994-11-08 | Coates George J | Spherical rotary valve assembly for use in a rotary valve internal combustion engine |
RU2544123C1 (ru) * | 2013-08-06 | 2015-03-10 | Николай Борисович Болотин | Двухтактный двигатель внутреннего сгорания |
RU2544642C1 (ru) * | 2013-08-06 | 2015-03-20 | Николай Борисович Болотин | Четырехтактный двигатель внутреннего сгорания |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4019487A (en) * | 1975-11-26 | 1977-04-26 | Dana Corporation | Rotary valve seal assembly |
US5105128A (en) * | 1989-11-30 | 1992-04-14 | Samsung Electro-Mechanics Co., Ltd. | Focusing unit |
Family Cites Families (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR423273A (fr) * | 1910-12-02 | 1911-04-12 | Paul Pedailles | Distribution pour moteurs à explosions |
GB191324563A (en) * | 1913-10-29 | 1914-04-30 | Freeman S Wright | Improvements in Valves for Internal Combustion Engines. |
US1635963A (en) * | 1926-05-18 | 1927-07-12 | Seifert Charles Henry | Rotary valve |
US4163438A (en) * | 1975-11-26 | 1979-08-07 | Dana Corporation | Rotary valve timing apparatus |
US4381737A (en) * | 1980-11-13 | 1983-05-03 | Turner William H | Rotary valved internal combustion engine |
JPS60533B2 (ja) * | 1981-09-21 | 1985-01-08 | 真成 西脇 | 回転吸排気式レシプロエンジンにおける燃焼室密封装置 |
DE3241723A1 (de) * | 1982-11-11 | 1984-05-17 | Volkswagenwerk Ag, 3180 Wolfsburg | Drehschieberanordnung zur steuerung des ladungswechsels einer brennkraftmaschine |
JPS60142006A (ja) * | 1983-12-28 | 1985-07-27 | Shinzo Kano | 内燃機関における吸排気装置 |
DD225744A1 (de) * | 1984-05-08 | 1985-08-07 | Kombnat Luft Und Kaeltetechnik | Drehschieber zur leistungsregelung einer expansionsmaschine |
GB2190139A (en) * | 1986-05-03 | 1987-11-11 | Howard Brian Leitch | Rotary spool valve |
JPS6355311A (ja) * | 1986-08-25 | 1988-03-09 | Tsutomu Nakayama | 内燃機関のロ−タリ−バルブ装置 |
US4751900A (en) * | 1987-02-26 | 1988-06-21 | Ruffolo Russ F | Adjustable segmented rotary twin port valve shaft |
FR2662214B1 (fr) * | 1990-05-21 | 1994-07-22 | Inst Francais Du Petrole | Moteur a deux temps a injection pneumatique de carburant et a commande d'injection par un boisseau rotatif. |
JP2841898B2 (ja) * | 1991-03-18 | 1998-12-24 | 住友金属工業株式会社 | 表面平滑性に優れた合金化溶融亜鉛めっき鋼板 |
-
1993
- 1993-01-30 DE DE4302648A patent/DE4302648A1/de not_active Ceased
-
1994
- 1994-01-28 DE DE59408103T patent/DE59408103D1/de not_active Expired - Fee Related
- 1994-01-28 EP EP94906168A patent/EP0635095B1/de not_active Expired - Lifetime
- 1994-01-28 ES ES94906168T patent/ES2132379T3/es not_active Expired - Lifetime
- 1994-01-28 WO PCT/EP1994/000249 patent/WO1994017287A1/de active IP Right Grant
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4019487A (en) * | 1975-11-26 | 1977-04-26 | Dana Corporation | Rotary valve seal assembly |
US5105128A (en) * | 1989-11-30 | 1992-04-14 | Samsung Electro-Mechanics Co., Ltd. | Focusing unit |
Non-Patent Citations (1)
Title |
---|
Doppel Taschenbuch für den Maschinenbau, Band 2, 13 Auflage Springer-Verlag 1974 Seite 128 * |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19949857A1 (de) * | 1999-10-15 | 2001-04-19 | Christoph Conradty | Viertaktverbrennungsmotor mit einem Drehschieberventil |
Also Published As
Publication number | Publication date |
---|---|
ES2132379T3 (es) | 1999-08-16 |
EP0635095A1 (de) | 1995-01-25 |
DE4302648A1 (de) | 1994-08-11 |
DE59408103D1 (de) | 1999-05-20 |
WO1994017287A1 (de) | 1994-08-04 |
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