EP0551504A1 - Drehschieber und dessen Verweundung für die Zufuhr einer Flüssigkeit zur Brennkammer einer Brennkraftmaschine. - Google Patents

Drehschieber und dessen Verweundung für die Zufuhr einer Flüssigkeit zur Brennkammer einer Brennkraftmaschine.

Info

Publication number
EP0551504A1
EP0551504A1 EP92917739A EP92917739A EP0551504A1 EP 0551504 A1 EP0551504 A1 EP 0551504A1 EP 92917739 A EP92917739 A EP 92917739A EP 92917739 A EP92917739 A EP 92917739A EP 0551504 A1 EP0551504 A1 EP 0551504A1
Authority
EP
European Patent Office
Prior art keywords
plug
channel
inlet
axis
fluid
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
Application number
EP92917739A
Other languages
English (en)
French (fr)
Other versions
EP0551504B1 (de
Inventor
Stephen Glover
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
IFP Energies Nouvelles IFPEN
Original Assignee
IFP Energies Nouvelles IFPEN
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by IFP Energies Nouvelles IFPEN filed Critical IFP Energies Nouvelles IFPEN
Publication of EP0551504A1 publication Critical patent/EP0551504A1/de
Application granted granted Critical
Publication of EP0551504B1 publication Critical patent/EP0551504B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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
    • F01L7/021—Rotary or oscillatory slide valve-gear or valve arrangements with cylindrical, sleeve, or part-annularly shaped valves with one rotary valve
    • F01L7/025—Cylindrical valves comprising radial inlet and side outlet or side inlet and radial outlet
    • 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 present invention relates to a rotary valve for transferring a fluid between a fluid source and a combustion chamber of an internal combustion engine, comprising at least one substantially cylindrical surface and a lateral flank.
  • the present invention relates more particularly to a rotary valve for controlling the admission of gas, in particular of an air-fuel mixture into a combustion chamber of an engine, comprising an intrinsic sealing system.
  • the present invention applies to two-stroke or four-stroke internal combustion engines having one or more cylinders supplied by a gas, in particular an air-fuel mixture.
  • the distribution of a fuel mixture in the combustion chamber can be carried out by parts moving in a reciprocating movement such as valves.
  • the Applicant has protected, in patent application EN 89.17484, a system of this type.
  • the performance of the engine may be limited by the injection systems with valves, in particular with regard to the control of the start and the end of the injection and the cross-section of the fuel air passage (oscillation problems). .
  • patent application EN 90.06323 provides for the use of rotary plugs for controlling the pneumatic injection of fuel in a two-stroke engine.
  • the bushels thus disclosed have an axis of rotation situated in a plane perpendicular to the axis of the cylinder, are pierced with a transverse channel for bringing the connecting channel and the combustion chamber into communication and are connected to means of drive allowing them to rotate as a function of the rotation speed of the engine crankshaft.
  • Patent application FR 2559 208 relates to a valve for controlling the exhaust and / or the admission of gas from and / or to a combustion chamber to which one or more sealing members is applied.
  • the improvement envisaged in this patent consists of lubrication and refrigeration of the contact surface between the sealing member (s) and the plug.
  • the present invention provides a rotary valve of simple design, which does not require an additional and independent sealing member at the intake.
  • the admission tightness is ensured according to the invention by the shape and the very arrangement of the plug.
  • the invention relates to a rotary plug of the type defined at the head of the description.
  • the plug according to the invention comprises at least one flow channel of said fluid having an inlet orifice and an outlet orifice, the inlet orifice belongs to said lateral surface of the plug and is placed at a non-zero distance from the axis of rotation of the plug and the outlet orifice belongs to the cylindrical surface of said plug and is offset radially relative to the inlet orifice.
  • the outlet is located at a greater distance from the axis of rotation than the inlet.
  • At least one fuel injector opens near the inlet orifice and inside the plug, said injector being oriented so that its axis has an orientation close to that of the face of the most close to the axis of rotation of the plug.
  • the face of the channel furthest from the longitudinal axis of the plug moves away from said axis from the inlet orifice.
  • At least one of said flow channels may include a fuel trapping means.
  • said fuel trapping means consists of an elbow formed by said channel and capable of retaining Said fuel under the effect of the centrifugal force created by the rotation of the plug.
  • the rotary valve is intended to control the admission of an air-fuel mixture into the combustion chamber of an internal combustion engine.
  • the plug further comprises, from a certain distance from its end opposite to the combustion chamber, two channels arranged symmetrically with respect to a longitudinal plane.
  • the plug may include an axial channel intended for its cooling.
  • the plug can be mounted in a single-cylinder engine, placed at the entrance of the combustion chamber;
  • several bushels can be mounted, each in the cylinder head of a combustion chamber of a multi-cylinder engine.
  • a single axial cooling channel then preferably passes through all of the bushels.
  • one or more bushels according to the invention can be fitted to an outboard motor, their longitudinal axis (s) then being able to be green cal.
  • FIG. 1 shows in longitudinal vertical section partLLe a multi-cylinder engine fitted with plugs according to the invention
  • FIG. 2 shows in longitudinal section an embodiment of a rotary valve according to the invention
  • FIG. 3 is a section along line A-A of Figure 2;
  • FIG. 4 is a section along line I-I of Figure 2 ;. .
  • FIG. 5 is a section along line II-II of Figure 2;
  • FIG. 6 is a section along line III-III of Figure 2;
  • FIG. 7 is a section along the line IV-IV of Figure 2 further showing the connection with the combustion chamber.
  • Figure 1 illustrates the arrangement of plugs in the case of a multi-cylinder engine.
  • the cylinders 1 (three in number in this example) each capped by a cylinder head 2 whose hemispherical bottom defines the upper part of the combustion chamber 4 which is further delimited by the walls of the cylinder 1 and by the upper part of the piston 5.
  • At each cylinder at least one injection orifice 3 provides communication between the combustion chamber 4 and at least one rotary plug 6 according to the invention.
  • the plug 6 is rotatably mounted in the cylinder head 2 and controls the distribution of a mixture compressed air and fuel in the combustion chamber 4 since it is placed between the injection orifice 3 and a duct (not referenced) for supplying compressed air.
  • a fuel injection device 7 is preferably placed on the compressed air duct, at the inlet of the plug 6.
  • each bushel of generally cylindrical shape, comprises at least one longitudinal shaft 8 which protrudes at least on one side and bears on a bearing 9.
  • the shafts 8 of the various bushels can be put together at the end.
  • each shaft 8 is hollow, which allows a coolant to pass through, for example, intended to cool the interior of said plug. This function is important given the rotation speeds of the plugs.
  • a single cylindrical shaft 8 can cross all the bushels, or shaft sections can be mounted on either side of a cylindrical bushel.
  • FIG. 2 shows in more detail a plug 6 according to the invention.
  • the general shape of the plug can be cylindrical, with a longitudinal axis of rotation 10.
  • an axial channel 11, coincident with the axis 10 of rotation of the plug allows for example to circulate a coolant to the inside the bushel.
  • the channel 12 is not straight, is preferably of variable section and has a first orifice or outlet orifice 121 cooperating with the combustion chamber 4 and a second orifice or inlet orifice 122, through which the mixture is introduced.
  • the inlet orifice 122 belongs to the lateral surface of the plug and is placed at a non-zero distance from the axis 10 of rotation of the plug while the outlet orifice 121 belongs to the cylindrical surface of the plug while being offset radially with respect to the inlet 122.
  • the outlet 121 is in any case placed farther from the axis 10 of rotation than the inlet 122.
  • the neutral axis or fiber 123 of the channel 12 can be substantially parallel to the axis of rotation 10 of the plug 6.
  • the fuel injector 7 opens near the inlet, inside the plug. More precisely, the injector 7 is oriented so that the axis of the jet that it generates is substantially contained in the same plane as the face 124 of the channel 12 closest to the axis 10 of the plug. In addition, the wall 125 of the channel 12 furthest from the axis 10 is inclined so that it moves away from the axis 10 from the end 122 of the plug.
  • Figures 3 and 4 help to better understand the geometry of the plug at the inlet 122.
  • peu can see two channels 12 A and 12 B arranged symmetrically with respect to a longitudinal plane of the plug. A larger number of channels can be provided without departing from the scope of the invention.
  • Each channel 12 e each associated injector 7 to be preferably arranged as indicated above.
  • Figure 3 which illustrates the zone into which the injector 7 enters shows the annular injection sector while in Figure 4 appears the partitioning of this sector into two zones 12 A, 12 B at the origin of the two channels. If two channels are provided, the plug will then rotate twice as fast as the engine in the case of an application to a two-stroke engine.
  • a fuel trapping means can be provided, according to the invention, downstream of the inlet 122.
  • FIGS. 5, 6 and 7 illustrate the path of the channel 12 or more precisely of the two channels 12 A and 12 B provided according to this embodiment, downstream of the inlet 122.
  • the trapping means is intended to supplement and improve the seal produced at the level of the inlet 122 of the plug.
  • the end 121 of the channel 12 allows an arrival of the mixture in the axis of the orifice 3, which is known per se.
  • the rotary drive of the bushel can be achieved by any means known per se (belt, chain, sprockets, ...) so that it is slaved to the speed of the motor or to a sub-multiple of this speed, depending the number of channels planned.
  • the plug is capable of entraining the fuel particles towards the interior of the channel 12.
  • the seal is completed by means of trapping the heaviest particles of the mixture.
  • This means is advantageously capable of trapping the particles before the admission phase. This means makes it possible to retain the trapped fuel and prevent it from going out to one or the other of the ends of the plug as long as the intake is closed.
  • the pressure variation allows said particles to be immediately reintroduced into the mixture and sprayed towards the combustion chamber.
  • the plugs according to the invention can be aligned as shown in Figure 1 thus providing a long axial channel 11 preferably intended for the passage of a cooling fluid.
  • a single rotary drive is necessary for all the plugs thus mounted.
  • Figures 2 to 7 show the case of a plug crossed by two channels 12, it can be envisaged without departing from the scope of the invention that the two channels meet near the end 121 opening towards the combustion chamber .
  • the plug (s) then have the same speed of rotation as the motor.
  • these can also have the shape of a convergent-divergent along their length.
  • plugs according to the invention can be made for example of aluminum, by molding.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Fuel-Injection Apparatus (AREA)
  • Control Of Throttle Valves Provided In The Intake System Or In The Exhaust System (AREA)
  • Valve-Gear Or Valve Arrangements (AREA)
EP92917739A 1991-08-02 1992-07-31 Drehschieber und dessen verwendung für die zufuhr einer flüssigkeit zur brennkammer einer brennkraftmaschine Expired - Lifetime EP0551504B1 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
FR9109917 1991-08-02
FR9109917A FR2679960A1 (fr) 1991-08-02 1991-08-02 Boisseau rotatif et utilisation dudit boisseau pour le transfert d'un fluide vers une chambre de combustion d'un moteur a combustion interne.
PCT/FR1992/000757 WO1993003260A1 (fr) 1991-08-02 1992-07-31 Boisseau rotatif et utilisation dudit boisseau pour le transfert d'un fluide vers une chambre de combustion d'un moteur a combustion interne

Publications (2)

Publication Number Publication Date
EP0551504A1 true EP0551504A1 (de) 1993-07-21
EP0551504B1 EP0551504B1 (de) 1996-10-02

Family

ID=9415916

Family Applications (1)

Application Number Title Priority Date Filing Date
EP92917739A Expired - Lifetime EP0551504B1 (de) 1991-08-02 1992-07-31 Drehschieber und dessen verwendung für die zufuhr einer flüssigkeit zur brennkammer einer brennkraftmaschine

Country Status (7)

Country Link
US (1) US5377635A (de)
EP (1) EP0551504B1 (de)
JP (1) JPH06502708A (de)
DE (1) DE69214267T2 (de)
ES (1) ES2094926T3 (de)
FR (1) FR2679960A1 (de)
WO (1) WO1993003260A1 (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2261470A1 (de) 2009-06-08 2010-12-15 Léon Crosset Verbrennungsmotor mit sphärischem Drehventil

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2705402B1 (fr) * 1993-05-21 1995-07-13 Inst Francais Du Petrole Boisseau rotatif amélioré.
US5579734A (en) * 1995-02-13 1996-12-03 Muth; Barry A. Rotary valve internal combustion engine
US5816203A (en) * 1995-02-13 1998-10-06 Muth; Barry A. Rotary valve internal combustion engine
US5967108A (en) 1996-09-11 1999-10-19 Kutlucinar; Iskender Rotary valve system
GB9827394D0 (en) * 1998-12-11 1999-02-03 Norton Cyril A Engines
US6513475B2 (en) 2001-04-18 2003-02-04 Barry Muth Rotary valve internal combustion engine
JP6385407B2 (ja) * 2016-09-22 2018-09-05 本田技研工業株式会社 内燃機関のロータリ式スロットル装置

Family Cites Families (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB293650A (en) * 1928-01-17 1928-07-12 Arthur Lionel Reeves Improvements in rotary valves for internal-combustion engines
US2158386A (en) * 1937-05-28 1939-05-16 Sykes Walter David Rotary valve for internal combustion engines
CH334777A (it) * 1956-01-25 1958-12-15 Monn Walter Dispositivo distributore a cassetto di un cilindro di motore a scoppio a quattro tempi
US3871340A (en) * 1972-10-03 1975-03-18 Tetrahedron Associates Inc Rotary valve internal combustion engine
US4007725A (en) * 1975-03-05 1977-02-15 Weaver Robert R Rotary valving unit for an internal combustion engine
US4075986A (en) * 1976-07-12 1978-02-28 Mark Keck Rotary-poppet valve internal combustion engine
US4546743A (en) * 1977-06-20 1985-10-15 Karl Eickmann Arrangements to rotary valves for engines compressors, motors or pumps
EP0074174A1 (de) * 1981-08-01 1983-03-16 Richard Furneaux Kinnersly Brennkraftmaschine und Drehschieber dafür
US5081966A (en) * 1984-11-15 1992-01-21 Hansen Engine Corporation Internal combustion engine with rotary valve assembly
IT1217060B (it) * 1987-04-30 1990-03-14 Montagni Alviero Dispositivo di distribuzione per macchine volumetriche alternative, come motori alternativi endotermici con valvola ruotante a forma di solido di rivoluzione in specie sferica.
CA1292702C (en) * 1989-06-23 1991-12-03 George Ristin Rotary valve with facility for stratified combustion in the internal combustionengine
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.
GB9013788D0 (en) * 1990-06-20 1990-08-08 Lotus Group Plc Internal combustion engine and an improved rotary inlet valve for use therewith
US5052349A (en) * 1990-07-30 1991-10-01 Terry Buelna Rotary valve for internal combustion engine

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO9303260A1 *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2261470A1 (de) 2009-06-08 2010-12-15 Léon Crosset Verbrennungsmotor mit sphärischem Drehventil

Also Published As

Publication number Publication date
FR2679960B1 (de) 1995-04-28
DE69214267T2 (de) 1997-02-20
WO1993003260A1 (fr) 1993-02-18
FR2679960A1 (fr) 1993-02-05
DE69214267D1 (de) 1996-11-07
EP0551504B1 (de) 1996-10-02
ES2094926T3 (es) 1997-02-01
US5377635A (en) 1995-01-03
JPH06502708A (ja) 1994-03-24

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