EP0635095A1 - Drehschieberventil - Google Patents
DrehschieberventilInfo
- Publication number
- EP0635095A1 EP0635095A1 EP94906168A EP94906168A EP0635095A1 EP 0635095 A1 EP0635095 A1 EP 0635095A1 EP 94906168 A EP94906168 A EP 94906168A EP 94906168 A EP94906168 A EP 94906168A EP 0635095 A1 EP0635095 A1 EP 0635095A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- shaft
- passage
- bore
- rotary slide
- slide valve
- 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
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 of this type is known from DE-AS 20 62 323.
- This rotary slide valve represents the inlet valve in a two-stroke engine.
- the shaft rotatably mounted in the cylinder head has a passage bore which connects a cylinder-side channel with a bore leading to the cylinder chamber over a predetermined range of rotation of the shaft.
- the rotary slide valve rotates at the same speed as the crankshaft of the two-stroke engine. Since the filling of the cylinder with fresh charge is relatively poor, a single-stage or multi-stage turbine is interposed between the carburetor and the rotary valve.
- Another two-stroke engine with rotary slide valves can be found in DE-OS 38 21 617.
- two rotary slide valves are provided on the inlet side, the control times of which overlap one another, one of the valves serving to supply the purge air and the other to supply the charge air.
- different loaders or blowers are provided for flushing and loading.
- the shaft of the rotary slide valves has approximately the shape of a half moon to form a passage.
- An exhaust valve in the form of a rotary slide valve in a two-stroke engine is the subject of FR-OS 25 31 139.
- the shaft has a bore as a passage.
- the object is to improve the rotary slide valve so that long valve opening times can be achieved, which can extend over more than 180 crankshaft degrees.
- FIG. 1 shows a section through a cylinder with a cylinder head in a schematic representation at the beginning of the intake stroke
- FIG. 2 shows a section corresponding to FIG. 1 in the middle of the compression stroke
- FIG. 3 shows a section corresponding to FIG. 1 in the middle of the working stroke
- FIG. 4 shows a section corresponding to FIG. 1 in a position at the beginning of the exhaust stroke
- Fig. 5 is a plan view of the rotary valve shaft
- Fig. 6 shows a section through this shaft
- Fig. 7 is a plan view of an embodiment of this shaft.
- a cylinder 1 a cylinder head 2 and a piston 3.
- a first rotary slide valve 4 is rotatably mounted, which is designed as an intake valve.
- the cylinder head 2 rotatably supports a second rotary slide valve 5, which is designed as an exhaust valve.
- the rotary slide valve 4 has a shaft 6 with a passage 7.
- the shaft 6 is sealed in the cylinder head 2.
- the rotary slide valve 5 also has a shaft 8, which is mounted in a sealed manner in the cylinder head 2 and also has a passage 23, only the axis 9 of which is shown in FIG. 1.
- the cylinder head 2 is provided with a first channel 10, through which the fuel-air mixture is supplied. On the side opposite the channel 10, the cylinder head 2 has a bore 12 leading to the cylinder or combustion chamber 11. Furthermore, there is a further channel 13 which discharges the exhaust gases, as well as a further bore 14 lying opposite to the cylinder chamber 11.
- Both shafts 6, 8 are driven by the crankshaft (not shown) of the engine and thereby execute half the speed of the crankshaft.
- the shaft 6 rotates counterclockwise, while the shaft 8 rotates clockwise.
- the axis 15 of the passage 7 runs obliquely to the axis 16 of the shaft 6 and intersects it.
- the inclined position of the axis 15 is selected so that the right edge 17 of one passage opening 18 is offset from the opposite left edge 19 of the other passage opening 20 in the direction of the shaft axis 16 at a distance. This distance is designated by 22 in FIG.
- schematically illustrated sealing elements 21 are provided, which seal the passage openings against each other and towards the outside.
- ERSA ⁇ ZB ⁇ T (RULE 26)
- the passage 23 of the rotary slide valve 5 has an axis 9 with an inclined position like the axis 15.
- the passage 7 connects the channel 10 to the bore 12. If the shaft 6 is rotated relative to the channel 10 and the bore 12, there is no connection between the channel and the bore.
- 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 to each other via the passage 7 when the shaft 6 passes through an angular path a plus ⁇ .
- the bores 12, 14 are preferably slit-shaped in the direction of the shaft axes 16.
- the passages 7, 23 can also be slit-like in the direction of the shaft axes 16.
- the walls of the passages 7, 23 can taper in the center, as can be seen in FIGS. 1, 5 and 6.
- the minimum passage cross section must not be smaller than the passage cross section of the bores 12 or 14.
- the shaft 6 can be displaceable in the direction of the axis 16. This shift can be controlled electronically depending on the operating parameters of the engine.
- the angle ⁇ plus ⁇ is therefore preferably greater than 90 °. If there are slot-like bores 12, 14 and slot-like passages 7, 23, this ensures that the rotary slide valves 4, 5 open very quickly and are fully open over the greater part of the angle of rotation plus ⁇ .
- the shafts 6, 8 are preferably made of a ceramic material. This can also be the case for the mounting of the shafts 6, 8 in the cylinder head 2.
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)
Abstract
Description
Claims
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 true EP0635095A1 (de) | 1995-01-25 |
EP0635095B1 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 |
---|---|---|---|---|
US6378481B1 (en) | 1999-10-15 | 2002-04-30 | Christoph Conradty | Four-stroke internal combustion engine with a rotary-spool valve |
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 |
RU2544642C1 (ru) * | 2013-08-06 | 2015-03-20 | Николай Борисович Болотин | Четырехтактный двигатель внутреннего сгорания |
RU2544123C1 (ru) * | 2013-08-06 | 2015-03-10 | Николай Борисович Болотин | Двухтактный двигатель внутреннего сгорания |
Family Cites Families (16)
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 |
US4019487A (en) * | 1975-11-26 | 1977-04-26 | Dana Corporation | Rotary valve seal assembly |
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 |
KR930005132B1 (ko) * | 1989-11-30 | 1993-06-15 | 삼성전기 주식회사 | 텔레비젼(tv) 수상기의 화면 포커스유니트 |
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 EP EP94906168A patent/EP0635095B1/de not_active Expired - Lifetime
- 1994-01-28 DE DE59408103T patent/DE59408103D1/de not_active Expired - Fee Related
- 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
Non-Patent Citations (1)
Title |
---|
See references of WO9417287A1 * |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6378481B1 (en) | 1999-10-15 | 2002-04-30 | Christoph Conradty | Four-stroke internal combustion engine with a rotary-spool valve |
Also Published As
Publication number | Publication date |
---|---|
WO1994017287A1 (de) | 1994-08-04 |
ES2132379T3 (es) | 1999-08-16 |
EP0635095B1 (de) | 1999-04-14 |
DE59408103D1 (de) | 1999-05-20 |
DE4302648A1 (de) | 1994-08-11 |
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