EP0376836A1 - Vorrichtung zum Einbringen eines Gemisches in eine Brennkammer eines Zweitaktmotors - Google Patents

Vorrichtung zum Einbringen eines Gemisches in eine Brennkammer eines Zweitaktmotors Download PDF

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Publication number
EP0376836A1
EP0376836A1 EP89403648A EP89403648A EP0376836A1 EP 0376836 A1 EP0376836 A1 EP 0376836A1 EP 89403648 A EP89403648 A EP 89403648A EP 89403648 A EP89403648 A EP 89403648A EP 0376836 A1 EP0376836 A1 EP 0376836A1
Authority
EP
European Patent Office
Prior art keywords
cylinder
volume
pressure
valve
chamber
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
EP89403648A
Other languages
English (en)
French (fr)
Other versions
EP0376836B1 (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
Publication of EP0376836A1 publication Critical patent/EP0376836A1/de
Application granted granted Critical
Publication of EP0376836B1 publication Critical patent/EP0376836B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • F01L9/00—Valve-gear or valve arrangements actuated non-mechanically
    • F01L9/10—Valve-gear or valve arrangements actuated non-mechanically by fluid means, e.g. hydraulic
    • 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
    • F02B33/28—Component parts, details or accessories of crankcase pumps, not provided for in, or of interest apart from, subgroups F02B33/02 - F02B33/26
    • 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 present invention relates to a device and a method for introducing under pressure a fuel mixture into a chamber of a cylinder of a two-stroke internal combustion engine.
  • the invention provides an assistance member for controlling an automatic valve disposed between the end of a pipe for introducing the mixture and the cylinder chamber.
  • valves such as valves, cooperating with return means, actuated under the effect of pressure differences between each of their faces, to introduce a fuel mixture into the chamber of a cylinder.
  • valves due in particular to the inertial forces compared to the forces due to pressure differences, and the possible panics of the return means when their operating frequency is close to their resonant frequency, these valves cannot be used when the pressure differences are too small and their actuation speed is too high.
  • the present invention provides a device having in particular the advantages of prior devices with automatic valve, such as thermal resistance, rapid opening and wide passage, and usable in particular when the pressure difference between the cylinder chamber and the pipe for introducing the fuel mixture, is weak.
  • tulip is meant the part of the valve having a flared shape, as opposed to the tail which is the part of the valve having a tapered shape.
  • This membrane actually acts as a separating element for two volumes. It will therefore not depart from the scope of the present invention by replacing this membrane with an auxiliary piston which slides in a bore, one face of this auxiliary piston participating in the delimitation of the first volume, the other face that of the second volume.
  • the first volume may be connected to the introduction pipe so that the pressure in the first volume is substantially equal to the pressure in the pipe.
  • the engine may comprise at least a second cylinder having a pump housing, the pipe for introduction into the chamber of the first cylinder may be connected to the pump housing of the second cylinder, and the second cylinder may have a non-zero angular offset lagging behind the first cylinder.
  • the separating element may have a useful cross section greater than the cross section of the valve.
  • the introduction pipe may include a fuel introduction member.
  • the pump housing 14 the movement of the piston 12 of which is angularly delayed by 120 °, supplies air to the chamber 16 of the cylinder in question 1 via the introduction pipe 15.
  • the end of the valve stem 19 is connected to the center of a flexible membrane 22 separating a first volume 23 from a second volume 24 whose difference in respective pressures can produce movements of the membrane and thus displacements of the valve 19 to which it is connected.
  • the valve cooperates with a spring 25 to carry out the automatic return of the valve 19 to a position in which the pipe 15 for introducing the fuel mixture is closed.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Valve Device For Special Equipments (AREA)
  • Reciprocating Pumps (AREA)
  • Control Of The Air-Fuel Ratio Of Carburetors (AREA)
  • Fuel-Injection Apparatus (AREA)
  • Cylinder Crankcases Of Internal Combustion Engines (AREA)
EP89403648A 1988-12-30 1989-12-22 Vorrichtung zum Einbringen eines Gemisches in eine Brennkammer eines Zweitaktmotors Expired - Lifetime EP0376836B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8817601A FR2641336B1 (fr) 1988-12-30 1988-12-30 Dispositif et methode pour introduire un melange carbure dans une chambre d'un moteur a deux temps
FR8817601 1988-12-30

Publications (2)

Publication Number Publication Date
EP0376836A1 true EP0376836A1 (de) 1990-07-04
EP0376836B1 EP0376836B1 (de) 1993-12-01

Family

ID=9373724

Family Applications (1)

Application Number Title Priority Date Filing Date
EP89403648A Expired - Lifetime EP0376836B1 (de) 1988-12-30 1989-12-22 Vorrichtung zum Einbringen eines Gemisches in eine Brennkammer eines Zweitaktmotors

Country Status (5)

Country Link
US (1) US5005537A (de)
EP (1) EP0376836B1 (de)
JP (1) JP2763360B2 (de)
DE (1) DE68911117T2 (de)
FR (1) FR2641336B1 (de)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0435730A1 (de) * 1989-12-29 1991-07-03 Institut Francais Du Petrole Zweitaktmotor mit gesteuerter pneumatischer Einspritzung
FR2676503A1 (fr) * 1991-05-17 1992-11-20 Chevenet Jean Charles Moteur thermique.

Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5448971A (en) * 1990-06-20 1995-09-12 Group Lotus Limited Internal combustion engine and an improved rotary inlet valve for use therewith
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.
DE4225369A1 (de) * 1992-07-31 1994-02-03 Bosch Gmbh Robert Gaswechselverfahren an Zweitaktbrennkraftmaschinen
JPH07310554A (ja) * 1993-03-31 1995-11-28 Mitsubishi Heavy Ind Ltd クランクケース圧縮式２サイクルエンジン
US5347967A (en) * 1993-06-25 1994-09-20 Mcculloch Corporation Four-stroke internal combustion engine
FR2724415B1 (fr) * 1994-09-09 1996-12-20 Inst Francais Du Petrole Moteur deux temps a dispositif d'injection ameliore et procede d'injection associe
FR2744764B1 (fr) * 1996-02-12 1998-04-17 Inst Francais Du Petrole Moteur deux temps ayant un moyen de controle du mouvement de la soupape
US5878703A (en) * 1996-05-31 1999-03-09 Sweeney; Kevin Two stroke cycle engine
US6349691B1 (en) * 2000-04-28 2002-02-26 Jeffrey F. Klein Automatic, pressure responsive air intake valve for internal combustion engine
US7270110B2 (en) * 2000-04-24 2007-09-18 Frank Keoppel Four stroke internal combustion engine with inlet air compression chamber
US6536384B1 (en) 2000-04-24 2003-03-25 Frank Keoppel Two-stroke internal combustion engine with isolated crankcase
US20040007192A1 (en) * 2000-04-24 2004-01-15 Frank Keoppel Four stroke internal combustion engine with isolated crankcase
JP2003021010A (ja) 2001-07-06 2003-01-24 Shin Daiwa Kogyo Co Ltd 小型エンジンにおけるエアクリーナー
JP2003056313A (ja) 2001-08-10 2003-02-26 Shin Daiwa Kogyo Co Ltd エンジン
WO2007009223A1 (en) * 2005-07-15 2007-01-25 Hans-Armin Ohlmann Two-stroke internal combustion engine with enhanced scavenging

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1361109A (en) * 1918-03-16 1920-12-07 Gregory J Spohrer Internal-combustion engine
DE603173C (de) * 1932-06-03 1934-09-24 Horst Froeber Dipl Ing Druckgasgesteuertes Spuellufteinlassventil
US2595775A (en) * 1946-07-31 1952-05-06 Wrangell Serge De Hydraulic valve operating system
GB2122257A (en) * 1982-06-04 1984-01-11 Paul Julian Moloney Valve operating mechanism for internal combustion and like-valved engines
FR2617240A1 (fr) * 1987-06-26 1988-12-30 Inst Francais Du Petrole Dispositif et methode d'introduction sous pression de melange carbure dans le cylindre d'un moteur

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB190613479A (en) * 1906-06-12 1907-05-16 Charles Richard Crosher Improvements in or relating to Internal Combustion Engines.
US896439A (en) * 1907-09-13 1908-08-18 Fred S Holsteen Valve.
FR386706A (fr) * 1908-01-30 1908-06-20 Evariste Royer Moteur à essence à deux temps
US955786A (en) * 1909-06-30 1910-04-19 Pelatiah J Marsh Internal-combustion engine.
US1525187A (en) * 1923-08-03 1925-02-03 Indlekofer Adolf Internal-combustion engine
US2719516A (en) * 1953-07-06 1955-10-04 Clark Lawrence Edward Engine
FR2379969A7 (fr) * 1977-02-07 1978-09-01 Semt Procede et dispositif de freinage pneumatique d'un moteur a combustion interne reversible par exemple
JPS5720514A (en) * 1980-07-15 1982-02-03 Japan Electronic Control Syst Co Ltd Fuel supply device of internal combustion engine with electronic controlled injector
ES2000360A6 (es) * 1985-07-19 1988-02-16 Orbital Eng Pty Metodo de aprovisionar de combustible un motor de dos tiempos encendido por chispa junto con un motor y vehiculo correspondientes
JPS6266208U (de) * 1985-10-17 1987-04-24
US4852528A (en) * 1988-06-20 1989-08-01 Magnavox Government And Industrial Electronics Company Pneumatic actuator with permanent magnet control valve latching

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1361109A (en) * 1918-03-16 1920-12-07 Gregory J Spohrer Internal-combustion engine
DE603173C (de) * 1932-06-03 1934-09-24 Horst Froeber Dipl Ing Druckgasgesteuertes Spuellufteinlassventil
US2595775A (en) * 1946-07-31 1952-05-06 Wrangell Serge De Hydraulic valve operating system
GB2122257A (en) * 1982-06-04 1984-01-11 Paul Julian Moloney Valve operating mechanism for internal combustion and like-valved engines
FR2617240A1 (fr) * 1987-06-26 1988-12-30 Inst Francais Du Petrole Dispositif et methode d'introduction sous pression de melange carbure dans le cylindre d'un moteur

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0435730A1 (de) * 1989-12-29 1991-07-03 Institut Francais Du Petrole Zweitaktmotor mit gesteuerter pneumatischer Einspritzung
FR2676503A1 (fr) * 1991-05-17 1992-11-20 Chevenet Jean Charles Moteur thermique.

Also Published As

Publication number Publication date
JP2763360B2 (ja) 1998-06-11
US5005537A (en) 1991-04-09
JPH02223631A (ja) 1990-09-06
EP0376836B1 (de) 1993-12-01
FR2641336B1 (fr) 1994-05-20
DE68911117D1 (de) 1994-01-13
FR2641336A1 (fr) 1990-07-06
DE68911117T2 (de) 1994-03-31

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