EP1359314A1 - Ensemble d'injecteur étalonné pour l'alimentation d'un moteur à combustion interne, notamment d'un générateur électrique - Google Patents

Ensemble d'injecteur étalonné pour l'alimentation d'un moteur à combustion interne, notamment d'un générateur électrique Download PDF

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Publication number
EP1359314A1
EP1359314A1 EP03008777A EP03008777A EP1359314A1 EP 1359314 A1 EP1359314 A1 EP 1359314A1 EP 03008777 A EP03008777 A EP 03008777A EP 03008777 A EP03008777 A EP 03008777A EP 1359314 A1 EP1359314 A1 EP 1359314A1
Authority
EP
European Patent Office
Prior art keywords
cavity
holes
fuel
box
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.)
Granted
Application number
EP03008777A
Other languages
German (de)
English (en)
Other versions
EP1359314B1 (fr
Inventor
Vincenzo Mazza
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.)
Elettromeccanica Gasperini S R
ELETTROMECCANICA GASPERINI Srl
Original Assignee
Elettromeccanica Gasperini S R
ELETTROMECCANICA GASPERINI Srl
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 Elettromeccanica Gasperini S R, ELETTROMECCANICA GASPERINI Srl filed Critical Elettromeccanica Gasperini S R
Publication of EP1359314A1 publication Critical patent/EP1359314A1/fr
Application granted granted Critical
Publication of EP1359314B1 publication Critical patent/EP1359314B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • 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
    • F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B63/00—Adaptations of engines for driving pumps, hand-held tools or electric generators; Portable combinations of engines with engine-driven devices
    • F02B63/04—Adaptations of engines for driving pumps, hand-held tools or electric generators; Portable combinations of engines with engine-driven devices for electric generators
    • 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
    • F02M35/10006—Air intakes; Induction systems characterised by the position of elements of the air intake system in direction of the air intake flow, i.e. between ambient air inlet and supply to the combustion chamber
    • F02M35/10026—Plenum chambers
    • F02M35/10045—Multiple plenum chambers; Plenum chambers having inner separation walls
    • 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
    • F02M35/10006—Air intakes; Induction systems characterised by the position of elements of the air intake system in direction of the air intake flow, i.e. between ambient air inlet and supply to the combustion chamber
    • F02M35/10026—Plenum chambers
    • F02M35/10052—Plenum chambers special shapes or arrangements of plenum chambers; Constructional details
    • 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
    • F02M35/1017—Small engines, e.g. for handheld tools, or model engines; Single cylinder 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
    • F02M35/1015—Air intakes; Induction systems characterised by the engine type
    • F02M35/10177—Engines having multiple fuel injectors or carburettors per cylinder
    • 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
    • F02M35/10209—Fluid connections to the air intake system; their arrangement of pipes, valves or the like
    • F02M35/10222—Exhaust gas recirculation [EGR]; Positive crankcase ventilation [PCV]; Additional air admission, lubricant or fuel vapour admission
    • 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
    • F02M35/12—Intake silencers ; Sound modulation, transmission or amplification
    • F02M35/1205—Flow throttling or guiding
    • F02M35/1216—Flow throttling or guiding by using a plurality of holes, slits, protrusions, perforations, ribs or the like; Surface structures; Turbulence generators
    • 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
    • F02M35/16—Combustion-air cleaners, air intakes, intake silencers, or induction systems specially adapted for, or arranged on, internal-combustion engines characterised by use in vehicles
    • 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 calibrated injector assembly for feeding internal-combustion engines, particularly for electric power generators, therefore for engines adapted to run at a constant speed.
  • Electric power generators are known which are powered by a single-cylinder internal-combustion engine and are typically used to recharge batteries of campers or the like.
  • the engines used in such electric power generators are characterized in that they have their maximum conversion efficiency by turning at a constant rotation rate, at which the efficiency of the entire electric power generator is optimized.
  • the aim of the present invention is therefore to provide a fuel injector assembly that has a considerably simplified structure with respect to conventional carburetors used in internal-combustion engines.
  • An object of the present invention is to reduce the intake noise caused by the shock wave that follows the combustion stroke of the engine.
  • Another object of the present invention is to provide an injector assembly that is particularly suitable for mixing gaseous fuel.
  • the present calibrated injector assembly for feeding internal-combustion engines, particularly for electric power generators, characterized in that it comprises a box-like body that forms internally a cavity, a duct for connecting said cavity to a combustion chamber of said engine, at least one nozzle for feeding fuel into said box-like body proximate to the inlet to said duct, and a plurality of holes formed in said box-like body for feeding combustion-supporting air into said cavity, said holes being formed in order to ensure a given stoichiometric ratio with respect to said fuel.
  • the reference numeral 1 generally designates a calibrated injector assembly for feeding two-stroke internal-combustion engines, particularly for electric power generators.
  • Such assembly 1 feeds the two-stroke internal-combustion engine 2, to which it is rigidly fixed by means of a bracket 3.
  • the internal-combustion engine is not shown in detail, since it is fully conventional.
  • the multiple injector assembly 1 is constituted by a metallic box-like body, which is substantially shaped like a prism with a rectangular base and is composed of a tray 4 which encloses a cavity 6 together with a lid 5.
  • the tray 4 and the lid 5 are fixed one another by way of screws (not shown), which engage in threaded holes 8 of a peripheral wall 7 of the tray 4.
  • the tray 4 comprises a substantially rectangular bottom 9, in a portion 10 of which there are multiple calibrated holes 11 arranged along multiple rows.
  • the longitudinal walls of the tray 4 form, at the hole for entering the duct 13, two respective bends 14 and 15, which ideally divide the cavity 6 into two chambers 16 and 17, the first whereof is smaller than the second.
  • a calibrated nozzle 18 is arranged on a lateral surface of the chamber 16 and is suitable to introduce the fuel.
  • a second calibrated nozzle 19 is fixed to the duct 13, and oil for lubricating the combustion chamber of the internal-combustion engine 2 is introduced through the second nozzle.
  • Three partitions 20 are provided inside the cavity 6 and are arranged transversely to the length of the box-like body; two of such partitions extend from one side wall 7 of the tray 4 to the other and are fixed to the tray 4, while the remaining partition, which also has the same dimensions, is fixed to the lid 5.
  • Operation of the invention is as follows: air is aspirated through the calibrated holes 11 into the cavity 6, at the end of the chamber 17; the calibration is such that the holes 11 allow the inflow of an amount of air that is equal to the amount required in order to provide the correct stoichiometric ratio with the fuel, particularly gaseous fuel, introduced with a constant flow-rate by the calibrated nozzle 18.
  • the path is such that every fluid thread of the air stream is subjected to an alternated sequence of positive and negative accelerations and of direction changes owing to the presence of the partitions 20; the motion of said fluid thread is of the turbulent type.
  • the air after entering the chamber 17 of the cavity 6, mixes with the fuel introduced through the nozzle 18 into the chamber 16. It should be noted that the larger quantity of air that arrives from the chamber 17 gathers, due to the suction of the engine, directly in the duct 13, facilitating correct mixing.
  • the resulting mix of air and fuel is aspirated into the intake duct 13, where the nozzle 19 introduces the lubricating oil at a constant flow-rate.
  • the mix of air and fuel in which the lubricating oil is suspended advances along the intake duct until it is introduced in the cylinder of the two-stroke internal-combustion engine 2.
  • the invention allows to provide a carburetor that has no moving parts (comparable to the throttle valve of conventional internal-combustion engines) and is therefore constructively extremely simple and highly effective in obtaining an explosive air-gas mix.
  • Such a condition is achieved by providing a larger number of calibrated holes in the lower surface of the tray 4, in the portion 10.
  • Those holes can be partially closed, according to a number of variations equal to the number of said operating states of the engine, by means of a partition that is actuated in a gate-like fashion: said partition can, for example, be able to slide within a guide and can be locked along said guide in the positions that correspond to each one of the partial closures of the holes that provide the air supply that is required in each instance.
  • the number of the calibrated nozzles for introducing fuel is equal to the number of said operating states of the engine that one wishes to provide: only one of said nozzles might operate in order to provide the minimum-speed condition (which corresponds to the minimum opening of the calibrated holes on the part of the movable partition), or two or more of said nozzles, taken in pairs, can operate simultaneously for the other operating states, which are characterized by higher engine speeds (which correspond to larger openings of the calibrated holes on the part of the movable partition).

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Geometry (AREA)
  • Fuel-Injection Apparatus (AREA)
EP03008777A 2002-04-30 2003-04-22 Ensemble d'injecteur étalonné pour l'alimentation d'un moteur à combustion interne, notamment d'un générateur électrique Expired - Lifetime EP1359314B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ITBO20020251 2002-04-30
IT2002BO000251A ITBO20020251A1 (it) 2002-04-30 2002-04-30 Gruppo iniettore calibrato per l'alimentazione di un motore a scoppioin particolare per gruppi elettrogeni

Publications (2)

Publication Number Publication Date
EP1359314A1 true EP1359314A1 (fr) 2003-11-05
EP1359314B1 EP1359314B1 (fr) 2007-08-01

Family

ID=11440097

Family Applications (1)

Application Number Title Priority Date Filing Date
EP03008777A Expired - Lifetime EP1359314B1 (fr) 2002-04-30 2003-04-22 Ensemble d'injecteur étalonné pour l'alimentation d'un moteur à combustion interne, notamment d'un générateur électrique

Country Status (3)

Country Link
EP (1) EP1359314B1 (fr)
DE (1) DE60315214D1 (fr)
IT (1) ITBO20020251A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2378529C2 (ru) * 2007-04-10 2010-01-10 Юрий Васильевич Тулаев Форсунка для насосного и пневматического распыливания топлива
CN105927430A (zh) * 2016-06-21 2016-09-07 刘联合 功率燃料自动同步调节转换器

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2430520A1 (fr) * 1978-07-07 1980-02-01 Mitsubishi Motors Corp Systeme d'admission pour moteur a combustion interne
EP0063632A1 (fr) * 1981-04-29 1982-11-03 Yamaha Motor Co., Ltd. Dispositif d'admission pour moteur à combustion interne
US4364340A (en) * 1980-02-08 1982-12-21 Yamaha Hatsudoki Kabushiki Kaisha Vehicular engine
EP0832352A2 (fr) * 1995-06-13 1998-04-01 FILTERWERK MANN + HUMMEL GmbH Module de tuyau
JP2000130274A (ja) * 1998-10-27 2000-05-09 Toyota Motor Corp エンジンの吸気装置
JP2000220544A (ja) * 1999-01-28 2000-08-08 Haruo Wada エンジンの吸気装置
JP2000345932A (ja) * 1999-06-03 2000-12-12 Toyota Auto Body Co Ltd 車両の吸気音低減装置

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2430520A1 (fr) * 1978-07-07 1980-02-01 Mitsubishi Motors Corp Systeme d'admission pour moteur a combustion interne
US4364340A (en) * 1980-02-08 1982-12-21 Yamaha Hatsudoki Kabushiki Kaisha Vehicular engine
EP0063632A1 (fr) * 1981-04-29 1982-11-03 Yamaha Motor Co., Ltd. Dispositif d'admission pour moteur à combustion interne
EP0832352A2 (fr) * 1995-06-13 1998-04-01 FILTERWERK MANN + HUMMEL GmbH Module de tuyau
JP2000130274A (ja) * 1998-10-27 2000-05-09 Toyota Motor Corp エンジンの吸気装置
JP2000220544A (ja) * 1999-01-28 2000-08-08 Haruo Wada エンジンの吸気装置
JP2000345932A (ja) * 1999-06-03 2000-12-12 Toyota Auto Body Co Ltd 車両の吸気音低減装置

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2378529C2 (ru) * 2007-04-10 2010-01-10 Юрий Васильевич Тулаев Форсунка для насосного и пневматического распыливания топлива
CN105927430A (zh) * 2016-06-21 2016-09-07 刘联合 功率燃料自动同步调节转换器
CN105927430B (zh) * 2016-06-21 2018-11-06 刘联合 功率燃料自动同步调节转换器

Also Published As

Publication number Publication date
EP1359314B1 (fr) 2007-08-01
ITBO20020251A0 (it) 2002-04-30
ITBO20020251A1 (it) 2003-10-30
DE60315214D1 (de) 2007-09-13

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