EP1092842A1 - Viertaktverbrennungsmotor mit einem Drehschieberventil - Google Patents
Viertaktverbrennungsmotor mit einem Drehschieberventil Download PDFInfo
- Publication number
- EP1092842A1 EP1092842A1 EP00119618A EP00119618A EP1092842A1 EP 1092842 A1 EP1092842 A1 EP 1092842A1 EP 00119618 A EP00119618 A EP 00119618A EP 00119618 A EP00119618 A EP 00119618A EP 1092842 A1 EP1092842 A1 EP 1092842A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- bore
- axis
- valve shaft
- passage
- 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.)
- Granted
Links
- 238000002485 combustion reaction Methods 0.000 claims abstract description 23
- 239000000446 fuel Substances 0.000 claims abstract description 17
- 238000002347 injection Methods 0.000 claims abstract description 17
- 239000007924 injection Substances 0.000 claims abstract description 17
- 239000003973 paint Substances 0.000 claims 1
- 238000010408 sweeping Methods 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000010422 painting Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000009736 wetting Methods 0.000 description 1
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
- 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
- F01L7/021—Rotary or oscillatory slide valve-gear or valve arrangements with cylindrical, sleeve, or part-annularly shaped valves with one rotary valve
Definitions
- the invention relates to a four-stroke internal combustion engine with a rotary slide valve the preamble of claim 1.
- FR 26 62 214 describes a two-stroke internal combustion engine with one Rotary slide valve, in which a fuel injector in the channel between one Compressor and the valve shaft is arranged.
- the fuel jet of the injector is on directed a passage opening of the passage of the valve shaft when this passage Connection between the channel and the bore leading to the combustion chamber manufactures.
- this passage is three-dimensionally curved so that the fuel is not can enter the combustion chamber directly. Rather, the droplets of the Fuel jet entrained by the air compressed by the compressor.
- a valve shaft 2 is rotatably mounted in a cylinder head 1. This valve shaft turns with half the number of revolutions of the crankshaft 21.
- This valve shaft 2 has a Inlet acting passage 3, which extends obliquely to the valve shaft axis 4.
- At a Rotation of the valve shaft 2 connects the passage 3 leading to the valve shaft 2 Channel 5 in the cylinder head 1 with a bore 6 in the cylinder head 1, which of the Valve shaft 2 runs to the combustion chamber 7 of the cylinder.
- a fuel injector 8 is arranged in the wall of the channel 5 .
- the Angular range ⁇ of the passage opening 9 about 90 °, while related to the axis 4 Angular range ⁇ of the bore 6 is approximately 35 °. This results in a course of the Opening and closing of the valve according to FIG. 3.
- valve opens over a rotation angle of the valve shaft 2 of approximately 35 °, is then fully opened over an angular range of approximately 50 ° and over another Angle of rotation of about 35 ° closes.
- the fully open angular range is 10 in FIG designated.
- the injection nozzle 8 generates a conical fuel jet 11, the axis of which is 12 is designated.
- This fuel jet 11 is directed onto the surface 13 of the cylinder 20.
- the beam 11 is oriented so that its axis 12 is at an angle ⁇ to the axis 4, which is greater than the angle ⁇ that the passage axis 14 makes to the axis 4. This is based on the case that axes 4, 12 and 14 lie in a common plane.
- the cone angle ⁇ of the beam 11 is approximately 20 °, which means is achieved that it has a width in the region of the bore 6 which is somewhat less than the width 18 of the bore 6.
- the jet 11 can thus be unhindered by the injection nozzle 8 enter the combustion chamber 7 through the passage 3 and the bore 6.
- the injection should take place within the range of rotation 10 of the valve shaft 2.
- the Injection area covers approximately the area of FIGS. 5a to 5d.
- the injection area begins when seen in the direction of rotation 17 of the valve shaft 2, the leading edge 15 of the passage Bore 6 has swept and ends when the trailing edge 16 bores 6 starts painting.
- the piston surface 13 is preferably concave in accordance with FIG. 4, preferably in the form of a piston concave on both sides with an elliptical recess 19.
- the duration of the injection can be varied, but should be within the angular range 10 take place.
- the injected per unit time Amount of fuel can be varied.
- a piston shape according to FIG. 4 it forms in the middle of the cylinder the injection jet a turbulent vortex, the distance from the piston to the cylinder head depends.
- This vortex can be fully formed if the piston has a large one Distance to the cylinder head.
- a single well-formed vortex 22 in the middle of the cylinder thereby the combustion process is improved.
- the valve Since the valve is open over a relatively long phase 10, one arises constant flow. When the valve is fully open, the efficiency of the flow coincides conforms to the geometry of the inlet, d. H. there is no flow separation.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Fuel-Injection Apparatus (AREA)
- Combustion Methods Of Internal-Combustion Engines (AREA)
- Valve-Gear Or Valve Arrangements (AREA)
Abstract
Description
- Figur 1:
- einen Vertikalschnitt durch den oberen Teil eines Zylinders in einer durch die Ventilwellenachse gehenden Ebene;
- Figur 2:
- einen Vertikalschnitt gemäß Figur 1 in einer rechtwinklig zur Ventilwellenachse verlaufenden Ebene;
- Figur 3:
- ein Diagramm des Ventilöffnungsverlaufs;
- Figur 4:
- einen der Figur 2 entsprechenden Schnitt zur Darstellung einer bevorzugten Kolbenform und
- Figur 5:
- verschiedene Phasen des Einlaßtaktes.
Claims (7)
- Viertaktverbrennungsmotor mit einem Drehschieberventil als Einlaßventil, bestehend aus einer im Zylinderkopf (1) quer zur Zylinderachse gelagerten Ventilwelle (2), die einen schräg zur Wellenachse (4) verlaufenden Durchlaß (3) aufweist und die sich mit der halben Drehzahl der Kurbelwelle des Motors dreht, mit einem zur Ventilwelle (2) führenden Kanal (5) im Zylinderkopf (1) und einer zwischen Ventilwelle (2) und dem Verbrennungsraum (7) verlaufenden Bohrung (6) im Zylinderkopf (1), eine die Bohrung (6) überstreichende Durchlaßöffnung (9) des Durchlasses (3) bezogen auf die Wellenachse (4) einen Winkelbereich (α) einnimmt, der mindestens gleich groß ist wie der auf die Wellenachse (4) bezogene Winkelbereich (β) der Bohrung (6), wobei bei einer vollen Umdrehung der Ventilwelle (2) nur einmal eine Verbindung über den Durchlaß (3) zwischen dem Kanal (5) und der Bohrung (6) besteht, dadurch gekennzeichnet, daß im Kanal (5) eine Kraftstoffeinspritzdüse (8) angeordnet ist, deren Strahlachse (12) auf das ventilwellenseitige Ende der Bohrung (6) ausgerichtet ist und die einen Kraftstoffstrahl (11) abgibt, wenn die Bohrung (6) von der überstreichenden Durchlaßöffnung (9) im wesentlichen übergriffen wird.
- Viertaktverbrennungsmotor nach Anspruch 1, dadurch gekennzeichnet, daß der größere Winkelbereich (α) einer Durchlaßöffnung (9) zuzüglich des kleineren Winkelbereichs (β) der Bohrung (6) größer als 90° ist und die Einspritzung innerhalb eines Drehbereichs (10) der Ventilwelle (2) stattfindet, der beginnt, wenn in Drehrichtung (17) der Ventilwelle (2) gesehen die Vorderkante (15) der Durchlaßöffnung (3) die Bohrung (6) überstrichen hat und der endet, wenn die Hinterkante (16) der Durchlaßöffnung (9) die Bohrung (6) zu überstreichen beginnt.
- Viertaktverbrennungsmotor nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß bei einer Geometrie, bei welcher der Durchlaß (3) anfängt, die Verbindung zwischen dem Kanal (5) und der Bohrung (6) herzustellen, wenn der Kolben sich in seinem oberen Totpunkt befindet, die Kraftstoffeinspritzung bewirkt wird innerhalb eines Winkelbereichs der Kurbelwelle, der zwischen etwa 80° und etwa 130° nach dem oberen Totpunkt liegt.
- Viertaktverbrennungsmotor nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, daß wenn die Achse (4) der Ventilwelle (2), die Achse (14) des Durchlasses (3) und die Strahlachse (12) in einer gemeinsamen Ebene liegen, die Strahlachse (12) einen größeren Winkel (γ) zur Achse (4) der Ventilwelle (2) einnimmt als der Winkel (δ) der Achse (14) der Durchlaßöffnung (3).
- Viertaktverbrennungsmotor nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, daß in Richtung der Achse (4) der Ventilwelle (2) gesehen im Bereich des verbrennungsraumseitigen Endes der Bohrung (6) die Breite des Kraftstoffstrahles (11) maximal der dortigen Breite (18) der Bohrung (6) entspricht.
- Viertaktverbrennungsmotor nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, daß mindestens der Auftreffbereich des Kraftstoffstrahles (11) auf der Kolbenoberfläche (13) konkav ausgebildet ist.
- Viertaktverbrennungsmotor nach Anspruch 6, dadurch gekennzeichnet, daß der Kolben als beidseits konkaver Kolben mit einer elliptischen Vertiefung (19) an der Kolbenoberfläche (13) ausgebildet ist.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19949857A DE19949857A1 (de) | 1999-10-15 | 1999-10-15 | Viertaktverbrennungsmotor mit einem Drehschieberventil |
| DE19949857 | 1999-10-15 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP1092842A1 true EP1092842A1 (de) | 2001-04-18 |
| EP1092842B1 EP1092842B1 (de) | 2003-11-05 |
Family
ID=7925831
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP00119618A Expired - Lifetime EP1092842B1 (de) | 1999-10-15 | 2000-09-08 | Viertaktverbrennungsmotor mit einem Drehschieberventil |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US6378481B1 (de) |
| EP (1) | EP1092842B1 (de) |
| AT (1) | ATE253686T1 (de) |
| DE (2) | DE19949857A1 (de) |
| ES (1) | ES2209742T3 (de) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6976464B2 (en) * | 2003-05-28 | 2005-12-20 | Dragon America Motor Technologies, Inc. | Semi-rotating valve assembly for use with an internal combustion engine |
| US7331315B2 (en) | 2005-02-23 | 2008-02-19 | Eastway Fair Company Limited | Two-stroke engine with fuel injection |
| US20060243230A1 (en) * | 2005-03-23 | 2006-11-02 | Mavinahally Nagesh S | Two-stroke engine |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2678319A1 (fr) * | 1991-06-25 | 1992-12-31 | Inst Francais Du Petrole | Systeme d'aide a la pulverisation d'un melange carbure dans une chambre de combustion et application du systeme a un moteur a combustion interne. |
| WO1993018283A1 (en) * | 1992-03-06 | 1993-09-16 | Ovidio Alves Lima | Internal combustion four stroke engine with cylinder head rotary valves |
| DE4302648A1 (de) * | 1993-01-30 | 1994-08-11 | Christoph Conradty | Drehschieberventil |
| US5626107A (en) * | 1995-11-17 | 1997-05-06 | De Blasi; Italo | Valve systems for internal combustion piston engines |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3137738C1 (de) * | 1981-09-23 | 1983-06-01 | Dr.Ing.H.C. F. Porsche Ag, 7000 Stuttgart | Brennkraftmaschine mit Fremdzuendung |
| US5273004A (en) * | 1989-03-30 | 1993-12-28 | Institut Francais Du Petrole | Two-stroke engine with rotary valves and uses of such an engine |
| 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. |
| FR2704903B1 (fr) * | 1993-05-03 | 1996-07-26 | Guy Negre | Procede et dispositifs de controle de combustion d'un moteur quatre temps. |
| DE4424117A1 (de) * | 1993-07-17 | 1995-01-19 | Audi Ag | Verfahren und Vorrichtung zum Einspritzen von Kraftstoff |
| DE19638024A1 (de) * | 1996-09-18 | 1998-03-19 | Bosch Gmbh Robert | Brennkraftmaschine |
| DE69816141T2 (de) * | 1997-01-31 | 2004-01-08 | Yamaha Hatsudoki K.K., Iwata | Viertaktbrennkraftmaschine |
-
1999
- 1999-10-15 DE DE19949857A patent/DE19949857A1/de not_active Withdrawn
-
2000
- 2000-09-08 DE DE50004312T patent/DE50004312D1/de not_active Expired - Fee Related
- 2000-09-08 AT AT00119618T patent/ATE253686T1/de not_active IP Right Cessation
- 2000-09-08 ES ES00119618T patent/ES2209742T3/es not_active Expired - Lifetime
- 2000-09-08 EP EP00119618A patent/EP1092842B1/de not_active Expired - Lifetime
- 2000-10-10 US US09/685,319 patent/US6378481B1/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2678319A1 (fr) * | 1991-06-25 | 1992-12-31 | Inst Francais Du Petrole | Systeme d'aide a la pulverisation d'un melange carbure dans une chambre de combustion et application du systeme a un moteur a combustion interne. |
| WO1993018283A1 (en) * | 1992-03-06 | 1993-09-16 | Ovidio Alves Lima | Internal combustion four stroke engine with cylinder head rotary valves |
| DE4302648A1 (de) * | 1993-01-30 | 1994-08-11 | Christoph Conradty | Drehschieberventil |
| US5626107A (en) * | 1995-11-17 | 1997-05-06 | De Blasi; Italo | Valve systems for internal combustion piston engines |
Also Published As
| Publication number | Publication date |
|---|---|
| US6378481B1 (en) | 2002-04-30 |
| DE19949857A1 (de) | 2001-04-19 |
| ATE253686T1 (de) | 2003-11-15 |
| EP1092842B1 (de) | 2003-11-05 |
| DE50004312D1 (de) | 2003-12-11 |
| ES2209742T3 (es) | 2004-07-01 |
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