EP0406083B1 - Vorrichtung zur Steuerung des Einlassanfangs des unter Druck stehenden Gemisches für eine Brennkraftmaschine und deren Verwendung bei der Zweitaktmaschine - Google Patents

Vorrichtung zur Steuerung des Einlassanfangs des unter Druck stehenden Gemisches für eine Brennkraftmaschine und deren Verwendung bei der Zweitaktmaschine Download PDF

Info

Publication number
EP0406083B1
EP0406083B1 EP90401792A EP90401792A EP0406083B1 EP 0406083 B1 EP0406083 B1 EP 0406083B1 EP 90401792 A EP90401792 A EP 90401792A EP 90401792 A EP90401792 A EP 90401792A EP 0406083 B1 EP0406083 B1 EP 0406083B1
Authority
EP
European Patent Office
Prior art keywords
cylinder
piston
injection
opening
duct
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
Application number
EP90401792A
Other languages
English (en)
French (fr)
Other versions
EP0406083A1 (de
Inventor
Jean-Pierre Maissant
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
Priority to AT90401792T priority Critical patent/ATE93932T1/de
Publication of EP0406083A1 publication Critical patent/EP0406083A1/de
Application granted granted Critical
Publication of EP0406083B1 publication Critical patent/EP0406083B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • 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
    • F02B33/00—Engines characterised by provision of pumps for charging or scavenging
    • F02B33/02—Engines with reciprocating-piston pumps; Engines with crankcase pumps
    • F02B33/04—Engines with reciprocating-piston pumps; Engines with crankcase pumps with simple crankcase pumps, i.e. with the rear face of a non-stepped working piston acting as sole pumping member in co-operation with the crankcase
    • 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
    • F02B25/00—Engines characterised by using fresh charge for scavenging cylinders
    • F02B25/26—Multi-cylinder engines other than those provided for in, or of interest apart from, groups F02B25/02 - F02B25/24
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M69/00—Low-pressure fuel-injection apparatus ; Apparatus with both continuous and intermittent injection; Apparatus injecting different types of fuel
    • F02M69/08—Low-pressure fuel-injection apparatus ; Apparatus with both continuous and intermittent injection; Apparatus injecting different types of fuel characterised by the fuel being carried by compressed air into main stream of combustion-air
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M69/00—Low-pressure fuel-injection apparatus ; Apparatus with both continuous and intermittent injection; Apparatus injecting different types of fuel
    • F02M69/10—Low-pressure fuel-injection apparatus ; Apparatus with both continuous and intermittent injection; Apparatus injecting different types of fuel peculiar to scavenged two-stroke engines, e.g. injecting into crankcase-pump chamber
    • 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

Definitions

  • the subject of the present invention is a device for controlling or controlling the start of the introduction under pressure of a fuel mixture into a first cylinder of an internal combustion engine as described in the preamble of claim 1.
  • a device for controlling or controlling the start of the introduction under pressure of a fuel mixture into a first cylinder of an internal combustion engine as described in the preamble of claim 1.
  • Such a device is known according to document EP-A-0.296.969.
  • the present invention relates to the control of the start of pneumatic injection.
  • the pressure source used is supplied by the pressure prevailing in the cylinder casing which is angularly offset and can in particular be delayed by 120 ° crankshaft (in the case of an engine 3, 6, ..., 3n cylinders) late 90 ° crankshaft (in the case of a 4, 8, ..., 4n cylinder engine) with respect to the cylinder in question where the fuel mixture is introduced.
  • This pressure source is not stored.
  • the present invention can be applied in particular to 2-stroke internal combustion engines with spark ignition.
  • the instant or the moment of the start of the introduction of pressurized fuel mixture from this source of pressurized gas into the cylinder under consideration is controlled.
  • the arrival of gas from this pressure source in a fuel metering device prepares a fuel mixture which can be introduced into the cylinder concerned through an orifice preferably open during the arrival of gas from this pressure source. This hole can be in the cylinder head.
  • this orifice can be opened before the arrival of the pressurized air since, according to the present invention, the start of the injection is controlled by specific means.
  • This orifice placed in the vicinity of the cylinder concerned may include a rotating plug, a controlled valve or an automatic valve (non-return valve type), the opening of which is controlled by the pressure originating from the pressure source and from the start control means. of the injection.
  • This orifice can also be located on the cylindrical walls of the cylinder concerned itself. Its opening can then be controlled by the movement of the piston (in the case of a light) combined with a non-return valve type device (or a rotary plug).
  • one embodiment of this type may consist in connecting the cylinder housing delayed by 120 ° or 90 ° crankshaft to the cylinder considered, via a pipe arriving from the side opposite to the exhaust in the cylinder considered.
  • this dosage can be done using low pressure injectors, but also using simpler devices, such as, for example, a carburetor of the type used for the intake of an engine two-stroke.
  • the system according to the invention makes it possible to delay the injection, therefore to reduce the fraction of short-circuited in the exhaust.
  • a piston of the deflector type can improve the operation of the engine equipped with the injection device in a rear light (opposite to the exhaust light) according to the invention.
  • the system according to the invention makes it possible to advance the opening of the controlled valve without fuel being injected and therefore to increase the opening time of the valve.
  • the distribution is less severe in terms of critical speed and this without increasing the short-circuiting of the fuel to the exhaust.
  • the present invention makes it possible to delay the injection therefore to have fewer fuel rejections due to the short-circuiting at the exhaust.
  • the dynamic effect produced by this delay in the pressure wave can make it possible to use a stiffer spring and therefore to have a faster closing of the valve.
  • the device according to the invention can make it possible in certain cases, with regard to the injection offset by 90 °, to further reduce the short-circuiting to the exhaust, which is naturally more pronounced than in the case of an injection. offset by 120 °, delaying the start of injection time.
  • this device comprises means for controlling the start of injection, these means intermittently and predetermined interrupt the communication between said pipe and said pump housing, these means thus make it possible to carry out a delayed introduction of the entire mixture fuel under pressure in order to offset the injection of said fuel mixture over time with respect to the introduction of fresh gas, these means have a light in the skirt of the piston of said other cylinder and an opening in the lower part of the other cylinder, the opening cooperates with the light in the skirt of the piston of the other cylinder, this light is arranged in such a way that the injection will only start after the bottom dead center of the piston of the first cylinder.
  • the highest point of said opening may be placed in the lower part of the other cylinder, in the vicinity of the lowest position occupied by the upper part of the piston of this other cylinder.
  • the length of the skirt can be adapted so that the lower part of this skirt closes the opening as soon as the pressure in the pump casing is greater than the pressure in the upper part of the first cylinder this in order to control the start injection.
  • the opening will be unmasked by the lumen of the skirt later when the pneumatic injection begins.
  • the closure means may include one of the following elements: an automatic valve, a controlled valve, a rotating plug, or a light formed in said first cylinder and cooperating with the piston of this first cylinder.
  • the pipeline may include a non-return valve preventing flow from the first cylinder in this pipeline.
  • the offset between the first and the other cylinder may in particular be 90 °, or 120 °.
  • Figure 1 shows in solid lines with the reference P1, the variation curve of the cylinder pressure into which the fuel mixture is injected during the scanning phase of this cylinder.
  • This cylinder is qualified as considered cylinder.
  • the pressure variation curve in the cylinder housing which is 120 ° behind is indicated in dotted lines and bears the reference P2.
  • This housing delayed by 120 ° relative to the cylinder considered represents the source of gas under pressure, or source of pressure.
  • FIG. 1 clearly shows that the pressure of this source is greater than the pressure of the cylinder during a large part of the sweep ranging from 150 ° crankshaft to 265 ° crankshaft.
  • This pressure source can therefore allow the introduction of fuel mixture during this whole part of the operating cycle of the cylinder considered where the pressure difference is sufficient.
  • the means for controlling the start of injection according to the invention make it possible to control more or less the most favorable instant for the introduction of this fuel mixture.
  • the reference 1 designates the cylinder in which the fuel injection is carried out in FIG. 3A.
  • Reference 2 designates the cylinder from which the injection is started.
  • Figures 2 and 2A show such a cylinder.
  • the reference 3 designates the piston which has a light 4 formed in its skirt 7 which cooperates with an opening 5 formed in the wall of the cylinder.
  • the opening 5 is preferably positioned so as not to be in contact with the combustion chamber 6, even when the piston 3 is in bottom dead center (PMB).
  • opening 5 opens into the part of the cylinder which cooperates with the skirt, but which does not belong to the part which contains burnt gases.
  • the reference 8 designates the exhaust pipe.
  • the reference 9 designates the pipe which places the opening 5 in communication with the cylinder in question.
  • the upper and lower edges 10 and 11 of the lumen 4, as well as the opening 5 are positioned so as to control the instants of start and end of injection.
  • the injection into the cylinder in question is carried out using compressed gases from the pump housing 12 of cylinder 2.
  • Reference 13 designates the valve for introducing fresh gases into the pump housing 12.
  • the reference 13 designates the spark plug and the reference 14 the rod-crank assembly of the cylinder 2.
  • FIG. 2A is a section along AA in FIG. 2.
  • the references 15 and 16 designate the lateral transfer lights.
  • Reference 17 designates a rear light used for injection or a rear transfer light as appropriate.
  • the reference 1 designates the cylinder into which the fuel is introduced.
  • the cylinder 1 comprises a combustion chamber 18 a spark plug 19 an exhaust duct 20 a transfer light 21 a pump housing 22.
  • the arrow 23 designates the direction of rotation of the crankshaft.
  • the reference 24 designates the end of the pipe 9 in the vicinity of the cylinder considered 1.
  • the injection is made by low pressure injector 25.
  • this can be replaced by another fuel supply system such as a carburetor or an injection pump.
  • a light 26 cooperates with the piston 27.
  • the end 24 of the pipe 9 opens onto this port 26 which communicates with the combustion chamber 18 when the piston 27 of the cylinder in question is at bottom dead center.
  • a non-return valve 28 is used which prevents the return of gases to the pump housing 12 of the cylinder 2 serving as a pressure source.
  • This valve 28 can be located anywhere in the line 9 and the injector or the fuel supply system can be both upstream and downstream of this valve.
  • Figures 3A and 3F show the embodiment of Figure 2A at different times in the cycle.
  • the opening 5 of the cylinder is about to be discovered by the opening 4 made in the skirt 7 of the piston 3.
  • the piston 3 is in the descending phase as indicated by the arrow 29.
  • the edge 11 of the light 4 will discover the opening 5.
  • the pressure in the pump casing 12 will serve as a source of pressure for the pneumatic injection into the cylinder 1.
  • the configuration of the skirt 7 of the piston 3 means that the injection will only start after the bottom dead center of the piston 27 of the cylinder 1.
  • the injection is thus postponed by at least 30, crankshaft.
  • the position of the edge 11 and the height of the lumen 4 of the piston 3 determines the start and the maximum duration of the injection.
  • the arrows 30 indicate the movement of pressurized gas coming from the casing 12 of the cylinder 2.
  • the fuel introduced by the injector 25 is sprayed and transferred to the combustion chamber 18 as indicated by the arrows 31.
  • the entire pneumatic injection device can be of the type described in French patent 2,575,521.
  • the end of injection can be controlled by the piston 27 which closes the opening 26 or the skirt 7 of the piston 3 which closes the opening 5 by the edge 10 of the opening 4.
  • valve 28 is open.
  • the light 26 may be placed slightly higher than the lateral transfer lights 21.
  • the upper end of the opening 5 is flush with the edge 32 of the piston 3.
  • the piston 3 is in the rising phase.
  • the height of the skirt 34 of the piston 27 and the position of the light 26 can be determined to maintain a good seal between the housing 12 and the housing 22 in the case where the opening 5 is already disconnected.
  • FIG. 3E shows the start of the opening of light 26 for injecting the cylinder 1.
  • the valve 28 prevents the gas from flowing from the combustion chamber 18 to the pump housing 12.
  • Figure 3F corresponds to a position of the piston 27 at 150 ° crankshaft after top dead center.
  • the pressure of the gases in the casing 12 begins to be higher than the pressure in the combustion chamber 18.
  • the piston 27 of the cylinder 1 includes a deflector 35 which improves the operation of the device.
  • FIGS. 3A to 3F a valve 28 has been shown at the end 24 of the duct 9.
  • this device we will not depart from the scope of the present invention by replacing this device with one devices such as a valve controlled by a rotary plug as described in patent EP-296,969.
  • cylinder 1 may have the same system as cylinder 2 and may be used for pneumatic injection into a third cylinder in advance of 120 ° or 90 ° crankshaft relative to cylinder 1.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Fuel-Injection Apparatus (AREA)
  • Electrical Control Of Air Or Fuel Supplied To Internal-Combustion Engine (AREA)
  • Means For Warming Up And Starting Carburetors (AREA)
  • Output Control And Ontrol Of Special Type Engine (AREA)

Claims (6)

  1. Vorrichtung zum Steuern des Beginns des Einführens von Brennstoffgemisch unter Druck in einen Zylinder (1) einer Brennkraftmaschine, wobei diese Brennkraftmaschine umfaßt:
    - wenigstens einen anderen Zylinder (2) mit einer Gehäusepumpe (12), die die Druckquelle der Drucklufteinspritzung in diesen ersten Zylinder darstellt,
    - einen Verbindungskanal (9) zwischen dieser Gehäusepumpe (12) und dem oberen Teil dieses ersten Zylinders (1),
    - Mitteln zur Brennstoffspeisung (25) die auf diesem Kanal (9) angeordnet sind,
    - wobei jeder Zylinder wenigstens einen Übertragungsschlitz (15, 16, 26) umfaßt, der dazu bestimmt ist, Luft in seine eigentliche Brennkammer (18, 6) einzuführen, wobei dieser Verbindungskanal (9) über wenigstens eine spezifische Öffnung (26) in die Brennkammer (18) mündet, um, im Zusammenwirken mit dem Kolben (27) dieses ersten Zylinders (1) ein Mittel (26, 27) zum Verschließen der Verbindung zwischen diesem Kanal (9) und der Brennkammer (18) des ersten Zylinders (1) zu schaffen, wobei eine Winkelverschiebung ungleich Null zwischen diesen Perioden dieser Zylinder existiert, wobei das Brennstoffgemisch in diesem Kanal (9) hinter der Gehäusepumpe (12) gebildet wird, dadurch gekennzeichnet, daß sie im übrigen Mittel zum Steuern des Einspritzbeginns (4, 5, 10, 11) umfaßt, wobei diese Mittel intermittierend und vorbestimmt die Verbindung zwischen dieser Leitung und dieser Gehäusepumpe (12) unterbricht, diese Mittel so eine verzögerte Einführung des gesamten Brennstoffgemisches unter Druck zu realisieren gestatten, um über die Zeit das Einspritzen dieses Brennstoffgemisches gegenüber dem Einführen frischer Gase zu verschieben, wobei diese Mittel einen Schlitz (4) in einem Hemd (7) des Kolbens (3) dieses anderen Zylinders und eine Öffnung (5) umfassen, die im unteren Teil dieses anderen Zylinders (2) ausgespart ist, wobei diese Öffnung (5) mit diesem Schlitz (4) in diesem Hemd (7) des Kolbens dieses anderen Zylinders (2) zusammenwirkt und dieser Schlitz (4) derart angeordnet ist, daß die Einspritzung erst nach dem unteren Totpunkt des Kolbens (27) des ersten Zylinders beginnt.
  2. Vorrichtung nach einem der Ansprüche 2 bis 3, dadurch gekennzeichnet, daß der oberste Punkt dieser Öffnung in dem unteren Teil dieses anderen Zylinders (2) benachbart der niedrigsten Position angeordnet ist, die vom oberen Teil des Kolbens dieses anderen Zylinders (Figur 3C) eingenommen ist.
  3. Vorrichtung nach einem der Ansprüche 2 bis 4, dadurch gekennzeichnet, daß die Länge dieses Hemdes (7) so angepaßt ist, daß der untere Teil dieses Hemdes diese Öffnung verschließt, sobald der Druck in dieser Gehäusepumpe größer als der Druck in dem oberen Teil dieses ersten Zylinders ist, wobei die Öffnung schließlich freigelegt wird, um den Drucklufteinspritzbeginn zu ermöglichen.
  4. Vorrichtung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß diese Verschließmittel (26, 27) eines der folgenden Elemente umfassen: ein automatisches Ventil, ein gesteuertes Ventil, ein Drehküken oder einen Schlitz, der in diesem ersten Zylinder ausgespart ist und mit dem Kolben dieses ersten Zylinders zusammenwirkt.
  5. Vorrichtung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß dieser Kanal ein Rückschlagventil (28) umfaßt, das die aus diesem ersten Zylinder (1) stammende Strömung in diesen Kanal (9) verhindert.
  6. Vorrichtung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß diese Verschiebung zwischen diesen Zylindern (1 und 2) entweder bei 90° oder bei 120° liegt.
EP90401792A 1989-06-30 1990-06-25 Vorrichtung zur Steuerung des Einlassanfangs des unter Druck stehenden Gemisches für eine Brennkraftmaschine und deren Verwendung bei der Zweitaktmaschine Expired - Lifetime EP0406083B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT90401792T ATE93932T1 (de) 1989-06-30 1990-06-25 Vorrichtung zur steuerung des einlassanfangs des unter druck stehenden gemisches fuer eine brennkraftmaschine und deren verwendung bei der zweitaktmaschine.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8908855A FR2649158A1 (fr) 1989-06-30 1989-06-30 Dispositif de controle de debut d'introduction sous pression du melange carbure dans un moteur a combustion interne et son application au moteur 2 temps
FR8908855 1989-06-30

Publications (2)

Publication Number Publication Date
EP0406083A1 EP0406083A1 (de) 1991-01-02
EP0406083B1 true EP0406083B1 (de) 1993-09-01

Family

ID=9383369

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90401792A Expired - Lifetime EP0406083B1 (de) 1989-06-30 1990-06-25 Vorrichtung zur Steuerung des Einlassanfangs des unter Druck stehenden Gemisches für eine Brennkraftmaschine und deren Verwendung bei der Zweitaktmaschine

Country Status (6)

Country Link
US (1) US5060602A (de)
EP (1) EP0406083B1 (de)
JP (1) JPH03206352A (de)
AT (1) ATE93932T1 (de)
DE (1) DE69003035T2 (de)
FR (1) FR2649158A1 (de)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2629132A1 (fr) * 1988-03-25 1989-09-29 Curtil Remi Procede et dispositif d'alimentation en air d'un cylindre d'un moteur deux temps autosuralimente a au moins un groupe de deux cylindres cales a 180o par une chambre de transit d'air alimentee sous pression communiquant par intermittence avec un conduit d'autosuralimentation, et moteur
EP0474623B1 (de) * 1990-09-07 1994-04-13 Franz Dipl.Ing.Dr. Laimböck Fremdgezündete Zweitakt-Hubkolbenbrennkraftmaschine mit Kurbelgehäusespülung
US5249557A (en) * 1991-02-18 1993-10-05 Sanshin Kogyo Kabushiki Kaisha Fuel injection system for two cycle engine
US5271358A (en) * 1991-03-20 1993-12-21 Sanshin Kogyo Kabushiki Kaisha Fuel injection system for engine
FR2693233B1 (fr) * 1992-07-02 1994-08-19 Inst Francais Du Petrole Dispositif de contrôle de l'injection pneumatique d'un mélange carbure dans un moteur à combustion interne à deux temps et utilisation associée.
US6079379A (en) 1998-04-23 2000-06-27 Design & Manufacturing Solutions, Inc. Pneumatically controlled compressed air assisted fuel injection system
US6273037B1 (en) 1998-08-21 2001-08-14 Design & Manufacturing Solutions, Inc. Compressed air assisted fuel injection system
US6293235B1 (en) 1998-08-21 2001-09-25 Design & Manufacturing Solutions, Inc. Compressed air assisted fuel injection system with variable effective reflection length
US7438044B2 (en) * 2005-07-28 2008-10-21 Advanced Engine Technology Ltd. Light-weight compact diesel engine

Family Cites Families (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE354503A (de) *
US1751385A (en) * 1927-09-08 1930-03-18 Beaudry George Paul Internal-combustion engine
US1904816A (en) * 1930-02-14 1933-04-18 George P Beaudry Internal combustion engine
US2058505A (en) * 1934-09-24 1936-10-27 Reno Emile Internal combustion engine
US2522649A (en) * 1945-10-06 1950-09-19 William L Tenney Two-stroke cycle engine cylinder and pump
US3289656A (en) * 1964-04-27 1966-12-06 Kiekhaefer Corp Crossfeed scavenging for multi-cylinder two cycle engines
US3675630A (en) * 1970-07-02 1972-07-11 Cleo C Stratton Engine
PL95190B1 (de) * 1973-11-09 1977-09-30 Politechnika Krakowska
US3921608A (en) * 1974-04-02 1975-11-25 Helmut Kottmann Two-stroke internal combustion engine
JPS587813B2 (ja) * 1975-10-31 1983-02-12 川崎重工業株式会社 ２サイクルキカン
JPS54144514A (en) * 1978-04-28 1979-11-10 Toyota Motor Corp Two-cycle gasoline engine
US4211082A (en) * 1978-10-11 1980-07-08 Bristol Robert D Internal combustion engine with free floating auxiliary piston
FR2575523B1 (fr) * 1984-12-28 1989-04-07 Inst Francais Du Petrole Dispositif et procede d'injection de carburant assiste par air ou gaz comprime dans un moteur
AT388596B (de) * 1986-03-17 1989-07-25 Bruecker & Zeman Soft Combusti Regenerativ arbeitende zweitakthubkolbenbrennkraftmaschine
FR2617240B1 (fr) * 1987-06-26 1992-10-02 Inst Francais Du Petrole Dispositif et methode d'introduction sous pression de melange carbure dans le cylindre d'un moteur
FR2621648B1 (fr) * 1987-10-07 1993-03-05 Inst Francais Du Petrole Moteur a deux temps a injection pneumatique et a restriction de debit a l'echappement
FR2632684B1 (fr) * 1988-06-08 1993-08-06 Inst Francais Du Petrole Dispositif et methode d'introduction sous pression de melange carbure dans le cylindre d'un moteur

Also Published As

Publication number Publication date
DE69003035D1 (de) 1993-10-07
FR2649158A1 (fr) 1991-01-04
JPH03206352A (ja) 1991-09-09
US5060602A (en) 1991-10-29
FR2649158B1 (de) 1994-04-22
ATE93932T1 (de) 1993-09-15
DE69003035T2 (de) 1993-12-16
EP0406083A1 (de) 1991-01-02

Similar Documents

Publication Publication Date Title
EP0296969B1 (de) Vorrichtung zum Zuführen unter Druck von einem Gemisch in den Zylinder eines Motors
EP0421481B1 (de) Einrichtung zum Einlass von Druckgasen in eine Brennkammer einer Brennkraftmaschine
EP0406083B1 (de) Vorrichtung zur Steuerung des Einlassanfangs des unter Druck stehenden Gemisches für eine Brennkraftmaschine und deren Verwendung bei der Zweitaktmaschine
EP0435730B1 (de) Zweitaktmotor mit gesteuerter pneumatischer Einspritzung
EP0786046B1 (de) Pneumatisch kontrollierte luft/kraftstoffeinspritzung in einem zweitaktmotor
EP0346188B1 (de) Vorrichtung und Verfahren für die Zufuhr von Druckluft Kraftstoff-Gemisch in den Zylinder einer Brennkraftmaschine
EP0376836A1 (de) Vorrichtung zum Einbringen eines Gemisches in eine Brennkammer eines Zweitaktmotors
EP0786045B1 (de) Zweitaktmotor mit verbesserter einspritzanordnung und verfahren zu deren einspritzung
FR2545158A1 (fr) Procede pour commander la section de sortie d'injecteurs pour moteurs a combustion interne a injection directe et injecteur pour la mise en oeuvre du procede
EP0577451B1 (de) Vorrichtung zum Kontrollieren der pneumatischen Einspritzung eines Gemisches für eine Zweitaktbrennkraftmaschine und ihre Verwendung
EP0323368B1 (de) Vorrichtung zur pneumatischen Kraftstoffeinspritzung
EP0458670B1 (de) Verfahren zur pneumatischen Kraftstoffeinpritzung in einen Zweitaktmotor und ein solcher Zweitaktmotor
EP0704017B1 (de) Luft-brennstoff-gemischzufuhrvorrichtung für eine zweitaktbrennkraftmaschine
EP0406078B1 (de) Zweiaktmotor mit Drehschiebern und Betrieb dieses Motors
EP0296899B1 (de) Anlage eines Brennstoffzufuhrsystems in einer Zweitaktmotorbrennkammer hinsichtlich der Auslassöffnung
CA1173315A (fr) Ensemble pompe-injecteur de combustible pour moteur a combustion interne
FR2459876A1 (fr) Systeme d'admission pour un moteur a explosion, et moteur a explosion comportant un tel systeme
CA1170520A (fr) Dispositif de pompage et d'injection pour moteur a combustion interne
FR2496757A1 (fr) Dispositif pour alimenter en melange carbure un moteur deux temps avec introduction d'air a travers le carter
FR2737253A1 (fr) Moteur a combustion interne a deux temps
FR2674906A1 (fr) Moteur a deux temps a controle selectif de la charge introduite dans la chambre de combustion.
FR2523211A1 (fr) Moteur a deux temps, notamment pour motocyclette
FR2662213A1 (fr) Procede d'injection pneumatique de carburant dans un moteur a deux temps et moteur a deux temps correspondant.
FR2531139A1 (fr) Dispositif de controle d'un circuit de gaz d'une chambre de combustion
FR2810077A1 (fr) Perfectionnements aux moteurs a deux temps

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

17P Request for examination filed

Effective date: 19900710

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AT BE DE GB IT SE

17Q First examination report despatched

Effective date: 19910613

ITF It: translation for a ep patent filed

Owner name: ST. ASSOC. MARIETTI & PIPPARELLI

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

RIN1 Information on inventor provided before grant (corrected)

Inventor name: MAISSANT, JEAN-PIERRE

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AT BE DE GB IT SE

REF Corresponds to:

Ref document number: 93932

Country of ref document: AT

Date of ref document: 19930915

Kind code of ref document: T

REF Corresponds to:

Ref document number: 69003035

Country of ref document: DE

Date of ref document: 19931007

GBT Gb: translation of ep patent filed (gb section 77(6)(a)/1977)

Effective date: 19930920

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed
EAL Se: european patent in force in sweden

Ref document number: 90401792.8

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: SE

Payment date: 19960402

Year of fee payment: 7

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: AT

Payment date: 19960417

Year of fee payment: 7

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 19960520

Year of fee payment: 7

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: BE

Payment date: 19960612

Year of fee payment: 7

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 19960718

Year of fee payment: 7

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 19970625

Ref country code: AT

Effective date: 19970625

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SE

Effective date: 19970626

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: BE

Effective date: 19970630

BERE Be: lapsed

Owner name: INSTITUT FRANCAIS DU PETROLE

Effective date: 19970630

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 19970625

EUG Se: european patent has lapsed

Ref document number: 90401792.8

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 19980303

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES;WARNING: LAPSES OF ITALIAN PATENTS WITH EFFECTIVE DATE BEFORE 2007 MAY HAVE OCCURRED AT ANY TIME BEFORE 2007. THE CORRECT EFFECTIVE DATE MAY BE DIFFERENT FROM THE ONE RECORDED.

Effective date: 20050625