EP3748151A1 - Unité de formation de mélange et moteur à deux temps doté d'une unité de formation de mélange - Google Patents

Unité de formation de mélange et moteur à deux temps doté d'une unité de formation de mélange Download PDF

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Publication number
EP3748151A1
EP3748151A1 EP20178313.1A EP20178313A EP3748151A1 EP 3748151 A1 EP3748151 A1 EP 3748151A1 EP 20178313 A EP20178313 A EP 20178313A EP 3748151 A1 EP3748151 A1 EP 3748151A1
Authority
EP
European Patent Office
Prior art keywords
formation unit
channel
mixture formation
section
mixture
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
EP20178313.1A
Other languages
German (de)
English (en)
Other versions
EP3748151B1 (fr
Inventor
Felix Servatius
Wolfgang Luithardt
Horst Denner
Dr. Martin Christoph Arenz
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.)
Andreas Stihl AG and Co KG
Original Assignee
Andreas Stihl AG and Co KG
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Publication date
Application filed by Andreas Stihl AG and Co KG filed Critical Andreas Stihl AG and Co KG
Publication of EP3748151A1 publication Critical patent/EP3748151A1/fr
Application granted granted Critical
Publication of EP3748151B1 publication Critical patent/EP3748151B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • 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
    • F02M17/00—Carburettors having pertinent characteristics not provided for in, or of interest apart from, the apparatus of preceding main groups F02M1/00 - F02M15/00
    • F02M17/36—Carburettors having fitments facilitating their cleaning
    • 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
    • F02M17/00—Carburettors having pertinent characteristics not provided for in, or of interest apart from, the apparatus of preceding main groups F02M1/00 - F02M15/00
    • F02M17/10—Carburettors having one or more fuel passages opening in valve-member of air throttle
    • 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
    • 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
    • F02B25/02—Engines characterised by using fresh charge for scavenging cylinders using unidirectional scavenging
    • 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
    • F02B25/02—Engines characterised by using fresh charge for scavenging cylinders using unidirectional scavenging
    • F02B25/04—Engines having ports both in cylinder head and in cylinder wall near bottom of piston 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
    • F02B25/00—Engines characterised by using fresh charge for scavenging cylinders
    • F02B25/14—Engines characterised by using fresh charge for scavenging cylinders using reverse-flow scavenging, e.g. with both outlet and inlet ports arranged near bottom of piston 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
    • 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
    • F02B77/00—Component parts, details or accessories, not otherwise provided for
    • F02B77/04—Cleaning of, preventing corrosion or erosion in, or preventing unwanted deposits in, combustion engines
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D9/00—Controlling engines by throttling air or fuel-and-air induction conduits or exhaust conduits
    • F02D9/08—Throttle valves specially adapted therefor; Arrangements of such valves in conduits
    • F02D9/10—Throttle valves specially adapted therefor; Arrangements of such valves in conduits having pivotally-mounted flaps
    • F02D9/109—Throttle valves specially adapted therefor; Arrangements of such valves in conduits having pivotally-mounted flaps having two or more flaps
    • 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
    • F02M17/00—Carburettors having pertinent characteristics not provided for in, or of interest apart from, the apparatus of preceding main groups F02M1/00 - F02M15/00
    • F02M17/08—Carburettors having one or more fuel passages opening in a valve-seat surrounding combustion-air passage, the valve being opened by passing 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
    • F02M17/00—Carburettors having pertinent characteristics not provided for in, or of interest apart from, the apparatus of preceding main groups F02M1/00 - F02M15/00
    • F02M17/10—Carburettors having one or more fuel passages opening in valve-member of air throttle
    • F02M17/12—Carburettors having one or more fuel passages opening in valve-member of air throttle the valve member being of butterfly type
    • 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
    • F02M17/00—Carburettors having pertinent characteristics not provided for in, or of interest apart from, the apparatus of preceding main groups F02M1/00 - F02M15/00
    • F02M17/34—Other carburettors combined or associated with other apparatus, e.g. air filters
    • 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
    • F02M19/00—Details, component parts, or accessories of carburettors, not provided for in, or of interest apart from, the apparatus of groups F02M1/00 - F02M17/00
    • F02M19/08—Venturis
    • 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
    • F02M29/00—Apparatus for re-atomising condensed fuel or homogenising fuel-air mixture
    • 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
    • F02M35/00—Combustion-air cleaners, air intakes, intake silencers, or induction systems specially adapted for, or arranged on, internal-combustion engines
    • F02M35/10—Air intakes; Induction systems
    • F02M35/1015—Air intakes; Induction systems characterised by the engine type
    • F02M35/1019—Two-stroke engines; Reverse-flow scavenged or cross scavenged engines
    • 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
    • F02M35/00—Combustion-air cleaners, air intakes, intake silencers, or induction systems specially adapted for, or arranged on, internal-combustion engines
    • F02M35/10—Air intakes; Induction systems
    • F02M35/10209—Fluid connections to the air intake system; their arrangement of pipes, valves or the like
    • F02M35/10216—Fuel injectors; Fuel pipes or rails; Fuel pumps or pressure regulators
    • 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
    • F02M35/00—Combustion-air cleaners, air intakes, intake silencers, or induction systems specially adapted for, or arranged on, internal-combustion engines
    • F02M35/10—Air intakes; Induction systems
    • F02M35/10242—Devices or means connected to or integrated into air intakes; Air intakes combined with other engine or vehicle parts
    • F02M35/10262—Flow guides, obstructions, deflectors or the like
    • 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
    • F02M7/00—Carburettors with means for influencing, e.g. enriching or keeping constant, fuel/air ratio of charge under varying conditions
    • F02M7/12—Other installations, with moving parts, for influencing fuel/air ratio, e.g. having valves
    • 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
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M19/00—Details, component parts, or accessories of carburettors, not provided for in, or of interest apart from, the apparatus of groups F02M1/00 - F02M17/00
    • F02M19/08—Venturis
    • F02M19/088—Whirl devices and other atomising means in or on the venturi walls

Definitions

  • the channel runs comparatively flat in the base body of the mixture formation unit. This results in a favorable arrangement and good utilization of the installation space usually available in the mixture formation unit.
  • the central axis of the channel advantageously closes with the longitudinal axis of the intake channel in a sectional plane which contains the longitudinal axis of the intake duct and runs parallel to the central axis of the duct, an angle of 0 ° to 30 °, in particular 0 ° to 25 °.
  • the central axis of the channel can accordingly lie in one plane with the longitudinal axis of the intake channel or run at an angle to the longitudinal axis of the intake channel.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Control Of The Air-Fuel Ratio Of Carburetors (AREA)
  • Means For Warming Up And Starting Carburetors (AREA)
  • Cylinder Crankcases Of Internal Combustion Engines (AREA)
  • Control Of Throttle Valves Provided In The Intake System Or In The Exhaust System (AREA)
EP20178313.1A 2019-06-08 2020-06-04 Unité de formation de mélange et moteur à deux temps doté d'une unité de formation de mélange Active EP3748151B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102019004063.5A DE102019004063A1 (de) 2019-06-08 2019-06-08 Gemischbildungseinheit und Zweitaktmotor mit einer Gemischbildungseinheit

Publications (2)

Publication Number Publication Date
EP3748151A1 true EP3748151A1 (fr) 2020-12-09
EP3748151B1 EP3748151B1 (fr) 2025-02-26

Family

ID=70977838

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20178313.1A Active EP3748151B1 (fr) 2019-06-08 2020-06-04 Unité de formation de mélange et moteur à deux temps doté d'une unité de formation de mélange

Country Status (4)

Country Link
US (1) US11384715B2 (fr)
EP (1) EP3748151B1 (fr)
CN (1) CN112049738B (fr)
DE (1) DE102019004063A1 (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3798439B1 (fr) * 2019-09-30 2025-04-09 Andreas Stihl AG & Co. KG Dispositif d'alimentation en carburant
EP4119782B1 (fr) * 2021-07-15 2026-02-25 Andreas Stihl AG & Co. KG Dispositif d'alimentation en carburant et moteur à deux temps doté d'un dispositif d'alimentation en carburant
EP4187067A1 (fr) * 2021-11-24 2023-05-31 Winterthur Gas & Diesel Ltd. Moteur à combustion interne
SE547505C2 (en) * 2022-05-30 2025-10-07 Husqvarna Ab A fuel system module for hand-held powertools

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1061835A (en) * 1911-07-24 1913-05-13 Emilio Gobbi Carbureter.
DE10156353A1 (de) * 2000-11-17 2002-05-23 Walbro Japan Inc Vergaser mit veränderlichem Venturikanal
US20140261329A1 (en) 2013-03-14 2014-09-18 Walbro Engine Management, L.L.C. Diaphragm carburetor with fuel metering compensation
EP2947305A1 (fr) * 2014-05-21 2015-11-25 Yamabiko Corporation Moteur à combustion interne à deux temps à balayage stratifié et carburateur associé
EP3115572A1 (fr) * 2015-06-24 2017-01-11 Yamabiko Corporation Moteur à combustion interne à deux temps et balayage stratifié, épurateur d'air de celui-ci et procédé d'admission

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2408726A (en) * 1943-09-06 1946-10-08 Carter Carburetor Corp Carburetor
DE2523601A1 (de) 1975-05-28 1976-12-09 Bosch Gmbh Robert Vergaser
JPS5554655A (en) * 1978-10-19 1980-04-22 Nissan Motor Co Ltd Variable venturi carburetor
US5133905A (en) 1989-10-26 1992-07-28 Walbro Corporation Fuel metering method and apparatus
DE4413270B4 (de) * 1994-04-16 2005-05-04 Fa. Andreas Stihl Starthilfevorrichtung an einem Membranvergaser
AU2003281320A1 (en) * 2002-07-03 2004-01-23 Peter Holmes Ellmers Fluid mixing venturi
DE10345653B4 (de) * 2003-10-01 2013-02-28 Andreas Stihl Ag & Co. Kg Vergaseranordnung
DE102005015164B4 (de) 2005-04-02 2014-04-17 Andreas Stihl Ag & Co. Kg Zweitaktmotor
CN106255818B (zh) * 2014-02-28 2019-12-24 沃尔布罗有限责任公司 具有扫气流体流动的化油器
JP2016017466A (ja) * 2014-07-08 2016-02-01 株式会社ニッキ 汎用気化器
TWM497195U (zh) * 2014-08-22 2015-03-11 hong-sheng Chen 進氣系統之燃油噴嘴裝置(三)
JP6432081B2 (ja) * 2014-11-28 2018-12-05 株式会社やまびこ 層状掃気エンジンの吸入管ユニット

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1061835A (en) * 1911-07-24 1913-05-13 Emilio Gobbi Carbureter.
DE10156353A1 (de) * 2000-11-17 2002-05-23 Walbro Japan Inc Vergaser mit veränderlichem Venturikanal
US20140261329A1 (en) 2013-03-14 2014-09-18 Walbro Engine Management, L.L.C. Diaphragm carburetor with fuel metering compensation
EP2947305A1 (fr) * 2014-05-21 2015-11-25 Yamabiko Corporation Moteur à combustion interne à deux temps à balayage stratifié et carburateur associé
EP3115572A1 (fr) * 2015-06-24 2017-01-11 Yamabiko Corporation Moteur à combustion interne à deux temps et balayage stratifié, épurateur d'air de celui-ci et procédé d'admission

Also Published As

Publication number Publication date
US11384715B2 (en) 2022-07-12
DE102019004063A1 (de) 2020-12-10
US20200386192A1 (en) 2020-12-10
CN112049738A (zh) 2020-12-08
EP3748151B1 (fr) 2025-02-26
CN112049738B (zh) 2024-07-26

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