US3868936A - Fuel injection systems - Google Patents

Fuel injection systems Download PDF

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Publication number
US3868936A
US3868936A US235154A US23515472A US3868936A US 3868936 A US3868936 A US 3868936A US 235154 A US235154 A US 235154A US 23515472 A US23515472 A US 23515472A US 3868936 A US3868936 A US 3868936A
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United States
Prior art keywords
venturi means
fuel
central
stepped
neck portion
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
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US235154A
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English (en)
Inventor
Jean-Pierre Rivere
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Renault SA
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Renault SA
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    • 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
    • F02M69/04—Injectors peculiar thereto
    • 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
    • F02B2275/00—Other engines, components or details, not provided for in other groups of this subclass
    • F02B2275/14—Direct injection into combustion chamber
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/10—Internal combustion engine [ICE] based vehicles
    • Y02T10/12—Improving ICE efficiencies
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S261/00—Gas and liquid contact apparatus
    • Y10S261/39—Liquid feeding nozzles

Definitions

  • the device for the indirect injection of fuel into the intake tube upstream of the inlet valves comp-rises means for injecting at the intake time, into the combustion chamber, a metered amount of fuel directed to this end into a gaseous flow of air at substantially sonic speed. induced by a set of stepped tuyeres having a moderate divergent angle, at the level of the neck portion of said tuyeres.
  • This device is applicable notably to the air-fuel feeding of engines for improving the fuel metering precision and the quality of the air-fuel mixture and therefore the degree of atmospheric pollution.
  • this atomization is improved by introducing additional air through an emulsion tube producing a preliminary air/fuel mixture before atomizing this emulsion more completely in a choke tube or a double (twin) diffuser disposed downstream of the emulsion tube.
  • a stepped nozzle system is arranged for providing at the neck level of one of the nozzles a gaseous air flow at high and possibly sonic speed, into which a fluid fuel feed duct will inject a fuel dose at the level of said neck, said dose being controlled by means for injecting fuel under pressure upstream of said fluid fuel duct.
  • Throttle means are incorporated in the intake pipe for adjusting the mixture output downstream of said nozzles.
  • the aforesaid fuel injection means may be adjusted or set to produce a metered amount of fuel corresponding to heavy loads.
  • a second metering device may be provided for operating the engine at low loads and idling speeds.
  • This device may consist of a second injector located downstream of the output throttling means, for example, beneath the butterfly valve.
  • this device may consist of an injector delivering fuel into a second set of nozzles or tuyeres, like the main full-load injector.
  • the fuel will be injected through injectors delivering the fuel into feed ducts leading to the neck portion of each tuyere.
  • the air output may be adjusted by using either a conventional butterfly valve or a guillotine or drop valve located upstream or downstream of the main atomizing device, or a tuyere located more downstream in the gas choke tube, this tuyere having a variable-section neck portion.
  • the use of two injectors incorporated in the intake manifold or pipe of an internal combustion engine will provide a sufflcient degree of precision atall engine loads and speeds, notably in the case of electronic injection equipping a high-performance engine, while constituting a simple and economical system, as will appear in the following description given with reference to the accompanying drawings.
  • the sonic diffusing tuyere of which the divergent cone has an angle equal to or less than 10 is characterized in that its external envelope, along its divergent section and to a point located beyond the neck portion, comprises a cylindrical shoulder in which a circular fuel inlet channel or groove is formed, this shoulder being adapted to fit tightly in a diffuser support having a properly streamlined external contour, of same length as the fitting portion, said support merging at its end into the external cylindrical surface of the tuyere and being rigid with radial arms for connecting same to the inner wall of the diffuser supporting tube inserted in the flow passage.
  • a radial feed passage communicating with the injector proper is formed through one of the arms of the diffuser support, at the same level as the circular feed channel into which said passage is caused to open.
  • At least two radial, diametrally opposite orifices open into the circular channel formed in the neck portion of the tuyere. In order to deliver fuel simultaneously, these orifices are disposed symmetrically in relation to the axis of the main fuel feed passage from the injector.
  • FIG. 1 illustrates in axial section an injection fuel feed system according to the method of this invention
  • FIG. 2 is a modified form of embodiment of the arrangement shown in FIG. 1, and
  • FIG. 3 is a diagram plotting the torque and power output curves of an engine equipped with the device illustrated in FIG. 2.
  • the intake device comprises a main Venturi tuyere or nozzle 1, having a divergent section of moderate angular value in order to avoid the introduction of appreciable pressure losses which is disposed within an intake pipe 2; this divergent section may have for example an angle not in excess of 10.
  • An auxiliary tuyere or nozzle 3 also referred to as a double diffuser, adapted to amplify the vacuum produced in the neck portion of the main Venturi 1, is provided just upstream of this Venturi, and has its outlet level with the neck of said main Venturi 1.
  • a 30-millimeter pipe arranged according-to this invention will have the same output capacity as a 40-min pipe, without throttling the engine.
  • a fuel injector 4 is adapted to inject the liquid fuel petrol into an injection passage 5 so that the fuel under pressure can be sprayed through the spout 6 of which the shape and number of spraying orifices are definitely immaterial; this spout 6 is located at the level of the neck of the auxiliary tuyere 3. With this arrangement the metered amount of petrol can be injected when the gas speed has its maximum value through the auxiliary tuyere neck. Considering the fact that the fuel thus'injected is metered by the injector 4, the speed of this fresh gas flow may advantageously be equal to the speed of sound in order to ensure the best possible atomization, thus permitting the utilization of lowpressure injectors such as electromagnetic injectors as currently employed in electronic injection systems.
  • This device does definitely not interfere with the position of the butterfly valve 7 disposed downstream of the main tuyere l for controlling independently the adjustment of the intake mixture output.
  • the present invention is applicable more particularly to internal combustion engines equipped with indirect fuel injection systems or any other metering device capable of replacing the main injector 4, and also to high efficiency engines requiring more homogeneous air/fuel mixtures. Furthermore, this device will permit an easy adjustment of the tuning of the intake pipe of internal combustion engines due to the presence of the main tuyere 2, so that as a rule shorter intake pipes or tubes and more regular flow rates than with the use of purely cylindrical tubes can be contemplated. This fuel supply will also advantageously apply to continuouscombustion thermal engines such as steam engines, turbines, ramjets, pulso-jets, etc.
  • FIGS. 2 and 3 it will be seen (FIG. 2) that a sonic tu yere or Venturi l is fitted in a supporting tube 2 mounted on the engine cylinder head 15.
  • This tuyere 1 projects upstream beyond the flange of tube 2 for centering a flanged cylindrical body 9 having force fitted therein a diffusing tuyere support 10 in which a concentric streamlined socket 6 is mounted concentrically for supporting the auxiliary tuyere or Venturi 3,
  • the socket 6 being connected to the tuyere 3 through a pair of opposite radial streamlined arms 7.
  • the auxiliary diffusing tuyere 3 is tightly fitted in the streamlined socket 6 so that its concentric external groove 14 constituting the feed channel be level with the radial feed passage 5 connecting said socket to the injector 4 mounted on said body 9.
  • the diameter of passage 5 will be of the order of 2 mm for an equivalent cross-sectional dimension of channel or groove 14.
  • Means for controlling the fluid output for instance in the'form of a butterfly shutter (not shown) are provided upstream of said body 9.
  • An auxiliary injector for idling and moderate-load operation (not shown) may also be provided in the flanged tube 2.
  • At least two diametrally opposed radial holes 12 connect the circular channel or grooves 14 to the neck portion of diffuser tuyere or nozzle 3 in order properly to atomize the fuel in the center of the sonic stream. To obtain the simultaneous or synchronized operation of these holes 12, these are disposed symmetrically in relation to the axis of channel 5.
  • this stepped tuyeres arrangement while affording a high sonic speed in the central stream at the ingress of the combustion chamber permits an engine operation independent of the up stream tube tunings.
  • the contour of the stepped tuyeres l and 3 reduces pressure losses to negligible values.
  • the torque and power output values are plotted as a function of the engine speeds, on the one hand (dash-line curve) in the case of an engine equipped with conventional carburetor and on the other hand (dash and dot curves) in the case of an engine equipped with an injection device according to the present invention, the reference letter a denoting the torque and b the power output, and it will be seen that notwithstanding a reduction in the choke diameter (32 mm instead of 40 mm in the case of the carburetor engine) the engine performances are considerably improved and more particularly the torque curve is much better at low engine speeds and more regular at high engine speeds.
  • a device for feeding internal combustion engines by indirect injection applied independently to each cylinder into an induction pipe upstream of an inlet valve comprising:
  • a second adjustable injection means for delivering fuel at idling and low engine speeds into said induction pipe downstream of said first set of concentric stepped venturi means.
  • a device for feeding internal combustion engines tel'ed amount? of fuel neck Pornon of by indirect injection applied independently to each cylcemra] meanspf 531d Set of f PP vemllrl inder into an induction pipe upstream of an inlet valve, means, wherein an ad ustable quantlty of fuel is mcomprising; iii15"$llf$ilii"5J3 15353335 225313 to a itipped pose upstream sat in et valve 0 each cylinder gepttglrlikrlreags 1511252365 ariirexlternal cylinderf havlrzjg in an induction choke, for providing a substantially a 0 ar orme sonic gaseous flow of air; 9 Sald adjustable mlecnon me anS,mcldeS a b.
  • a first adjustable injection means for delivering dial feed passage connected to said circular groove, metered amounts of fuel at high sine Speeds said shoulder bein fitted into a su ortin socket said central ventufi means having zft leasf two ta 5 g g an mjlecnon p-assage mm the neck pomon dial holes formed in diametrally opposite positions g z ygz g ggg g jgl g si i 22g: and symmetrically in relation to said radial feed ff J passage for interconnecting said circular groove g i z i is 33 3 r g i gg zg i g x and said neck portion of said central venturi means me ns and S id 6 tr 1 v and wherein the length of a divergent cone of said cluges an s en central venturi means is about ten times its inner y 6 a mg a s er m diameter measured across its neck
  • a device for feeding internal combustion engines Justable mjecuon includes a radla] f pasby indirect injection applied independently to each cyl- Z Q EF g F Sald clrcula? saldahoul inder into an induction pipe upstream of an inlet valve, er emg m a Soc comprising.
  • tral venturi means having at least two radial holes a.
  • a first set of concentric stepped venturi means disformed m dfametrany opposlte pqsmons and posed upstream of said inlet valve of each cylinder W m rejauon sjald radla] feed P g in an induction choke, for providing a substantially for mtercfmnectmg clrcular groove and 531d Sonic gaseous flow of neck portion of said central venturi means;
  • a first adjustable injection means for delivering a continuationldadlustable l q mean fOT f l g metered amounts of f l at high engine speeds fuel at idling and low englne speeds into said inducthrough an injection passage into the neck por i tion plpe downstream of said first set of concentric of the central venturi means of said first set of 35 l f venturi tepped venturi means wherein an adjustable 4.
  • venturi means is at least three times 40 5- A de ice according to claim 3 wherein an outer the diameter of the neck portion of another venturi streamlined surface of said supporting socket merges means ofsaid set of stepped venturi means in which along a line of continuity into an outer cylindrical surthe outlet end of the divergent cone of said central face of said central venturi means. venturi means is positioned;

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Fuel-Injection Apparatus (AREA)
  • Combustion Methods Of Internal-Combustion Engines (AREA)
US235154A 1971-03-19 1972-03-16 Fuel injection systems Expired - Lifetime US3868936A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR7109785A FR2129244A5 (enrdf_load_html_response) 1971-03-19 1971-03-19
FR7202682A FR2169483A6 (enrdf_load_html_response) 1971-03-19 1972-01-27

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US235154A Expired - Lifetime US3868936A (en) 1971-03-19 1972-03-16 Fuel injection systems

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US (1) US3868936A (enrdf_load_html_response)
JP (1) JPS5118012B1 (enrdf_load_html_response)
AT (1) AT312996B (enrdf_load_html_response)
DE (1) DE2213124C3 (enrdf_load_html_response)
ES (1) ES400928A1 (enrdf_load_html_response)
FR (2) FR2129244A5 (enrdf_load_html_response)
GB (1) GB1384955A (enrdf_load_html_response)
IT (1) IT950367B (enrdf_load_html_response)
SE (1) SE372967B (enrdf_load_html_response)
SU (1) SU491240A3 (enrdf_load_html_response)

Cited By (32)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4056085A (en) * 1976-06-18 1977-11-01 Ford Motor Company Engine positive crankcase ventilation valve assembly
US4146596A (en) * 1975-07-31 1979-03-27 Nissan Motor Company, Limited Intake system of an internal combustion engine
DE2905640A1 (de) * 1978-02-14 1979-08-23 Nippon Denso Co Kraftstoffeinspritzanlage
FR2433109A1 (fr) * 1978-08-07 1980-03-07 Bendix Corp Systeme de pulverisation de carburant
US4204507A (en) * 1977-03-17 1980-05-27 The Bendix Corporation Fuel electric fuel injection valve
US4276862A (en) * 1978-07-17 1981-07-07 Yamaha Hatsukoki Kabushiki Kaisha Internal combustion engine of fuel injection type
US4285318A (en) * 1974-08-05 1981-08-25 Nissan Motor Company, Ltd. Exhaust gas recirculation system having flow control valve combined with supersonic nozzle
US4315491A (en) * 1979-01-23 1982-02-16 Toyota Jidosha Kogyo Kabushiki Kaisha Fuel injection type internal combustion engine
US4347822A (en) * 1977-03-17 1982-09-07 The Bendix Corporation Single point fuel injection with venturi atomization
US4354470A (en) * 1979-07-06 1982-10-19 Honda Giken Kogyo Kabushiki Kaisha Fuel supply apparatus in internal combustion engine
US4375801A (en) * 1981-10-01 1983-03-08 Eckman Donald E Charge mixing carburetor plate
US4387063A (en) * 1981-05-12 1983-06-07 Societe Industrielle De Brevets Et D'etudes S.I.B.E. Carburettors comprising a main fuel circuit and an auxiliary circuit
US4416241A (en) * 1980-08-26 1983-11-22 Robert Bosch Gmbh Mixture formation system for mixture-compressing internal combustion engines with externally supplied ignition
US4819604A (en) * 1986-12-10 1989-04-11 Honda Giken Kogyo Kabushiki Kaisha Fuel supply control method for internal combustion engines
US4825834A (en) * 1986-12-10 1989-05-02 Honda Giken Kogyo Kabushiki Kaisha Fuel supply control method for internal combustion engines
US4886026A (en) * 1988-09-01 1989-12-12 Ford Motor Company Fuel injection control system
US4915712A (en) * 1987-05-05 1990-04-10 Aerequipment Engineers, Inc. Evaporative gas cooling system and method
US5018483A (en) * 1989-10-24 1991-05-28 Fuji Jukogyo Kabushiki Kaisha Fuel injection quantity control device for alcohol engine
US5273688A (en) * 1991-12-09 1993-12-28 Gilbert J. Eastin Carburetor air volume control
US5809972A (en) * 1996-06-21 1998-09-22 Grant; Barry Venturi-assisted fuel injection carburetor system
US6047956A (en) * 1997-04-15 2000-04-11 Brazina; Edward A. Atomizing fuel carburetor
US6412450B1 (en) * 1996-09-06 2002-07-02 Vialle Beheer B.V. Injection device
WO2004005691A1 (en) * 2002-07-03 2004-01-15 Peter Holmes Ellmers Fluid mixing venturi
US20050072393A1 (en) * 2003-10-01 2005-04-07 Leo Now Gas directing system and method
US20060201486A1 (en) * 2005-03-02 2006-09-14 Keihin Corporation Structure of fuel supply pipe in throttle body comprising two fuel injection valves
US20060225708A1 (en) * 2005-03-17 2006-10-12 Keihin Corporation Structure of fuel supply pipe in throttle body comprising two fuel injection valves
US20070144491A1 (en) * 2005-12-28 2007-06-28 Honda Motor Co., Ltd. Fuel injection system for engine
US20070289583A1 (en) * 2004-04-02 2007-12-20 Tsugunori Konakawa Fuel Supply Apparatus and Vehicle Provided with the Same
US20100101525A1 (en) * 2005-05-23 2010-04-29 Leo Now Air horn for efficient fluid intake
US8375915B1 (en) 2009-02-25 2013-02-19 Leo Now Gas directing system and method
US20140123944A1 (en) * 2012-11-07 2014-05-08 Marvin V. Benoit Hybrid carburetor and fuel injection assembly for an internal combustion engine
US9279392B2 (en) 2013-08-28 2016-03-08 Kohler Co. Gaseous engine fuel delivery

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4132203A (en) * 1977-03-17 1979-01-02 The Bendix Corporation Single point intermittent flow fuel injection
DE3441967C1 (de) * 1984-11-16 1986-06-19 Pierburg Gmbh & Co Kg, 4040 Neuss Brennstoffversorgungseinrichtung
US4699110A (en) * 1985-04-26 1987-10-13 Nissan Motor Co., Ltd. Fuel supply system

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2102800A (en) * 1934-12-12 1937-12-21 Frank A Kane Method of and apparatus for gasifying a liquid fuel
US2857145A (en) * 1951-02-27 1958-10-21 Thomas A Morris Injection type carburetor
US3143401A (en) * 1961-08-17 1964-08-04 Gen Electric Supersonic fuel injector
US3282572A (en) * 1965-08-24 1966-11-01 Comb And Explosives Res Inc Method and apparatus for supplying fuel-air mixtures to internal combustion engines
US3473523A (en) * 1966-04-27 1969-10-21 Fuel Injection Eng Co Fuel injection system
US3606869A (en) * 1970-05-11 1971-09-21 Gen Motors Corp Apparatus for electrically synchronizing fuel injection with fuel ignition in an internal combustion engine
US3608531A (en) * 1968-07-04 1971-09-28 Brico Eng Fuel injection
US3610213A (en) * 1970-03-09 1971-10-05 Giovanni Gianini Fuel injection system
US3778038A (en) * 1970-03-06 1973-12-11 Dresser Ind Method and apparatus for mixing and modulating liquid fuel and intake air for an internal combustion engine

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2102800A (en) * 1934-12-12 1937-12-21 Frank A Kane Method of and apparatus for gasifying a liquid fuel
US2857145A (en) * 1951-02-27 1958-10-21 Thomas A Morris Injection type carburetor
US3143401A (en) * 1961-08-17 1964-08-04 Gen Electric Supersonic fuel injector
US3282572A (en) * 1965-08-24 1966-11-01 Comb And Explosives Res Inc Method and apparatus for supplying fuel-air mixtures to internal combustion engines
US3473523A (en) * 1966-04-27 1969-10-21 Fuel Injection Eng Co Fuel injection system
US3608531A (en) * 1968-07-04 1971-09-28 Brico Eng Fuel injection
US3778038A (en) * 1970-03-06 1973-12-11 Dresser Ind Method and apparatus for mixing and modulating liquid fuel and intake air for an internal combustion engine
US3610213A (en) * 1970-03-09 1971-10-05 Giovanni Gianini Fuel injection system
US3606869A (en) * 1970-05-11 1971-09-21 Gen Motors Corp Apparatus for electrically synchronizing fuel injection with fuel ignition in an internal combustion engine

Cited By (44)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4285318A (en) * 1974-08-05 1981-08-25 Nissan Motor Company, Ltd. Exhaust gas recirculation system having flow control valve combined with supersonic nozzle
US4146596A (en) * 1975-07-31 1979-03-27 Nissan Motor Company, Limited Intake system of an internal combustion engine
US4056085A (en) * 1976-06-18 1977-11-01 Ford Motor Company Engine positive crankcase ventilation valve assembly
US4347822A (en) * 1977-03-17 1982-09-07 The Bendix Corporation Single point fuel injection with venturi atomization
US4204507A (en) * 1977-03-17 1980-05-27 The Bendix Corporation Fuel electric fuel injection valve
DE2905640A1 (de) * 1978-02-14 1979-08-23 Nippon Denso Co Kraftstoffeinspritzanlage
US4494511A (en) * 1978-02-14 1985-01-22 Nippondenso Co., Ltd. Fuel injection system for internal combustion engines
US4276862A (en) * 1978-07-17 1981-07-07 Yamaha Hatsukoki Kabushiki Kaisha Internal combustion engine of fuel injection type
FR2433109A1 (fr) * 1978-08-07 1980-03-07 Bendix Corp Systeme de pulverisation de carburant
US4315491A (en) * 1979-01-23 1982-02-16 Toyota Jidosha Kogyo Kabushiki Kaisha Fuel injection type internal combustion engine
US4354470A (en) * 1979-07-06 1982-10-19 Honda Giken Kogyo Kabushiki Kaisha Fuel supply apparatus in internal combustion engine
US4416241A (en) * 1980-08-26 1983-11-22 Robert Bosch Gmbh Mixture formation system for mixture-compressing internal combustion engines with externally supplied ignition
US4387063A (en) * 1981-05-12 1983-06-07 Societe Industrielle De Brevets Et D'etudes S.I.B.E. Carburettors comprising a main fuel circuit and an auxiliary circuit
US4375801A (en) * 1981-10-01 1983-03-08 Eckman Donald E Charge mixing carburetor plate
US4819604A (en) * 1986-12-10 1989-04-11 Honda Giken Kogyo Kabushiki Kaisha Fuel supply control method for internal combustion engines
US4825834A (en) * 1986-12-10 1989-05-02 Honda Giken Kogyo Kabushiki Kaisha Fuel supply control method for internal combustion engines
US4883039A (en) * 1986-12-10 1989-11-28 Honda Giken Kogyo Kabushiki Kaisha Fuel supply control method for internal combustion engines
US4915712A (en) * 1987-05-05 1990-04-10 Aerequipment Engineers, Inc. Evaporative gas cooling system and method
US4886026A (en) * 1988-09-01 1989-12-12 Ford Motor Company Fuel injection control system
US5018483A (en) * 1989-10-24 1991-05-28 Fuji Jukogyo Kabushiki Kaisha Fuel injection quantity control device for alcohol engine
US5273688A (en) * 1991-12-09 1993-12-28 Gilbert J. Eastin Carburetor air volume control
US5809972A (en) * 1996-06-21 1998-09-22 Grant; Barry Venturi-assisted fuel injection carburetor system
US6412450B1 (en) * 1996-09-06 2002-07-02 Vialle Beheer B.V. Injection device
US6047956A (en) * 1997-04-15 2000-04-11 Brazina; Edward A. Atomizing fuel carburetor
US20060092758A1 (en) * 2002-07-03 2006-05-04 Ellmers Peter H Fluid mixing venturi
WO2004005691A1 (en) * 2002-07-03 2004-01-15 Peter Holmes Ellmers Fluid mixing venturi
US7263961B2 (en) * 2003-10-01 2007-09-04 Leo Now Gas directing system and method
US20050072393A1 (en) * 2003-10-01 2005-04-07 Leo Now Gas directing system and method
CN1619133B (zh) * 2003-10-01 2010-09-08 里欧马汀·敖 一种导气系统及方法
US7640921B2 (en) * 2004-04-02 2010-01-05 Yamaha Hatsudoki Kabushiki Kaisha Fuel supply apparatus and vehicle provided with the same
US20070289583A1 (en) * 2004-04-02 2007-12-20 Tsugunori Konakawa Fuel Supply Apparatus and Vehicle Provided with the Same
US20060201486A1 (en) * 2005-03-02 2006-09-14 Keihin Corporation Structure of fuel supply pipe in throttle body comprising two fuel injection valves
US7134425B2 (en) * 2005-03-02 2006-11-14 Keihin Corporation Structure of fuel supply pipe in throttle body comprising two fuel injection valves
US7198032B2 (en) * 2005-03-17 2007-04-03 Keihin Corporation Structure of fuel supply pipe in throttle body comprising two fuel injection valves
US20060225708A1 (en) * 2005-03-17 2006-10-12 Keihin Corporation Structure of fuel supply pipe in throttle body comprising two fuel injection valves
US7997246B2 (en) 2005-05-23 2011-08-16 Leo Now Air horn for efficient fluid intake
US20100101525A1 (en) * 2005-05-23 2010-04-29 Leo Now Air horn for efficient fluid intake
US7383811B2 (en) * 2005-12-28 2008-06-10 Honda Motor Co., Ltd. Fuel injection system for engine
US20070144491A1 (en) * 2005-12-28 2007-06-28 Honda Motor Co., Ltd. Fuel injection system for engine
US8375915B1 (en) 2009-02-25 2013-02-19 Leo Now Gas directing system and method
US20140123944A1 (en) * 2012-11-07 2014-05-08 Marvin V. Benoit Hybrid carburetor and fuel injection assembly for an internal combustion engine
US9115671B2 (en) * 2012-11-07 2015-08-25 Benebe, Inc. Hybrid carburetor and fuel injection assembly for an internal combustion engine
US9279392B2 (en) 2013-08-28 2016-03-08 Kohler Co. Gaseous engine fuel delivery
US10145338B2 (en) 2013-08-28 2018-12-04 Kohler Co. Gaseous Engine Fuel Delivery

Also Published As

Publication number Publication date
JPS5118012B1 (enrdf_load_html_response) 1976-06-07
SE372967B (enrdf_load_html_response) 1975-01-20
DE2213124C3 (de) 1975-06-19
IT950367B (it) 1973-06-20
FR2129244A5 (enrdf_load_html_response) 1972-10-27
FR2169483A6 (enrdf_load_html_response) 1973-09-07
AT312996B (de) 1974-01-25
DE2213124A1 (de) 1972-10-05
SU491240A3 (ru) 1975-11-05
GB1384955A (en) 1975-02-26
DE2213124B2 (de) 1974-11-07
ES400928A1 (es) 1975-07-01

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