US3591148A - Carburetor - Google Patents

Carburetor Download PDF

Info

Publication number
US3591148A
US3591148A US859125*[A US3591148DA US3591148A US 3591148 A US3591148 A US 3591148A US 3591148D A US3591148D A US 3591148DA US 3591148 A US3591148 A US 3591148A
Authority
US
United States
Prior art keywords
fuel
air
amount
zone
atomization zone
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
US859125*[A
Other languages
English (en)
Inventor
Hugo Schmitz
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.)
Individual
Original Assignee
Individual
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
Priority claimed from DE19681776156 external-priority patent/DE1776156A1/de
Priority claimed from DE19691931642 external-priority patent/DE1931642A1/de
Application filed by Individual filed Critical Individual
Application granted granted Critical
Publication of US3591148A publication Critical patent/US3591148A/en
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
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M9/00—Carburettors having air or fuel-air mixture passage throttling valves other than of butterfly type; Carburettors having fuel-air mixing chambers of variable shape or position
    • F02M9/10—Carburettors having air or fuel-air mixture passage throttling valves other than of butterfly type; Carburettors having fuel-air mixing chambers of variable shape or position having valves, or like controls, of elastic-wall type for controlling the passage, or for varying cross-sectional area, of fuel-air mixing chambers or of the entry passage
    • 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
    • F02M7/22—Other installations, with moving parts, for influencing fuel/air ratio, e.g. having valves fuel flow cross-sectional area being controlled dependent on air-throttle-valve position

Definitions

  • the air for atomizing the fuel is conducted into the annular atomizing chamber by two axially aligned tubular conduits leading from opposite sides through the center portion of the circular walls where a spherical body is fixedly arranged and in whose hollow interior extends a needIe-valve controlled fuel admitting tube, while fuel outlet apertures in the sphere discharge the fuel into the airstream which is caused to flow from the tubular conduits into the annular atomizing chamber through a short and narrow and adjustable passage formed between the surface of the sphere and the adjustable circular walls.
  • carburetors of the most different construction. All of these carburetors, however, have in common that an air stream which is conducted past the end of a nozzle will draw fuel from the nozzle and this fuel, in view of the low pressure and the speed of the air, is atomized. There exists, however, a relationship between the aspirated amount of fuel and the amount of air passing the nozzle or between the low pressure at the nozzle which is proportionate to the amount of air. In the event that the cross section of the atomizing zone is not variable, the quality of the fuel preparation is increased or drops in relation to the intermingled amount of air or the speed of the air respectively. Devices are known in which these facts are properly considered, and which operate with an approximately constant low pressure in the atomizing zone.
  • the tube cross section above the fuel nozzle is regulated by a slidable piston which is in connection with a low pressure chamber in such a manner that when the low pressure increases the piston is raised so that the piston exposes a larger area of the cross section of the tube.
  • the piston has secured thereto a conical nozzle needle which follows the slidable movement of the piston and opens the fuel nozzle more or less.
  • the control of the low pressure or the intermingled amount of air, respectively, is effected by a throttle flap arranged after the atomizing zone. This throttle flap regulates the size of the free flow cross-sectional area.
  • the disadvantage of these known devices is that the fuel is supplied point-shaped and, therefore, it can be treated only linearly in the direction of the stream of air.
  • the throttle flap which is arranged immediately after the atomizing zone, splits the air stream into two partial streams so that, dependent upon the position of the throttle flap and the piston, the fuel in one or the other pressure streams is given preferential treatment.
  • This nonuniform distribution of the fuel in the air stream can also not be completely eliminated by a turbulence behind the throttle flap.
  • the fuel introduction from the nozzle into the airstream and the further path of the fuel particles in the airstream corresponds, when considered according to the flow technique, to a combination of source and parallel flow. (See Eek, Technical Flow Science, th Ed., FIG. 58, Page 57.)
  • the heretofore known carburetor constructions may produce an approximate uniform low pressure in the atomizing zone, but they fail to produce a uniform distribution of the fuel in the airstream which is necessary to attain an optimum exploitation of the fuel and for reducing the heretofore customary CO contents in the exhaust gases of motor vehicles.
  • the throttle flap which is arranged directly after the atomizing zone, are grouped a number of additional difficulties.
  • the throttle flap which is arranged in the prepared fuel-air mixture, first of all, separates the fuel-air mixture into two partial streams which, as a rule, can hardly contain each the same amount of air-fuel mixture. Regardless of the opening condition of the throttle flap, there will always be caused a back pressure in the stream with an unsymmetric secondary flow and secondary turbulences which are effective far into the air funnel and, therefore, prevent a uniform distribution of the fuel over the entire cross section of the stream.
  • the system of the present invention is provided with regulating and dosage devices which pennit a regulation of the amounts of combustion air and the fuel entering the motor without employing a throttle flap in the mixing tube that is, the motor output is not regulated by the amount of the mixture by a direct regulation of the amount of the combustion air when the same still is without fuel.
  • the air is the carrier agent for the fuel. If the combustion engine has to deliver a predetermined output at the highest ex ploitation of the fuel, it is necessary to mix with the fuel a predetermined amount of combustion air, whereby the fuel has to be in a gaseous condition. Therefore, the air has not only the purpose of conveying the original fluid fuel in any manner to the combustion chamber, but the air also has to convert the fuel into a gaseous condition and must uniformly distribute the fuel in the combustion air and then has to be conducted to the combustion chamber of the internal combustion engine. In order not only to atomize the original fluid fuel but to also vaporize the same, substantially larger specific exchange surfaces are required between the combustion air and the f uel than are available in the conventional carburetors or in injection devices.
  • centrifugal forces which decrease from the inside toward the outside and which also cause a decreasing angular speed of the airstream from the inside towards the outside act first of ali, upon the fluid particles of the fuel in the manner of a multilayer shear stream and cause a very quick droplet resolution which is followed by a diffusion of the fuel molecules so that a genuine spatial atomization of the fuel takes place.
  • FIG. I illustrates a longitudinal section of a carburetor having a rotational symmetric construction.
  • FIG. 2 illustrates across section along the line 2-2 of PK ⁇ . 1.
  • FIG. 3 illustrates one embodiment for the formation of a surface on a boundary wall for obtaining a substantial wall turbulence and for preventing the formation of a fuel film on the wall.
  • FIG. 4 illustrates another embodiment of the carburetor of the invention.
  • FIG. 5 illustrates an embodiment of the carburetor of the invention intended for an automatic adjustment of the feed of the fuel in relation to the supplied amount of air
  • FIGv 6 il lustrates a carburetor in accordance with the invention which is provided with a special air supply device.
  • the air enriched with fuel leaves the carburetor outlet 23 and is sucked in by the motor.
  • the air when entering the carburetor, passes through the filters arranged on opposite sides of the carburetor housing and then passes through guide vane rings 2i and with a twist enters the axially aligned suction tubes 26.
  • the air paaes the centrally disposed displacement body 12 at the inner ends of the tubes 26, it carries with it the fuel which is supplied by the nonles l3 and the fuel is thereupon atomized in the annular chamber or tunnel 29, which extends concentrically about the common axis of the tubes 26 and is formed between two circular walls 2.
  • the discharge of the fuel through the nozzles 13 is supported by the low pressure created on the surface of the displacement body l2 and also by the superpressure existing in the interior of the displacement body 12 which, to a small extent is produced by the straight flowing airstream.
  • the mixture of fuel and air flows in the annular chamber 29 or tunnel along spiral-shaped paths. ln view of the centrifugal forces which decrease from the inside to the outside, and also in view of the outwardly decreasing angular speed of the air, large specific interchange surfaces or larger relative speeds are produced between the fuel particles and the air particularly when the contact area of the walls 2 is provided with a series of concentric steps 2a. This results in a particularly effective preparation of the fuel. The better, however, the fuel preparation, the less danger filllSln that later on the fuel will separate from the air in the suction line of the motor.
  • the invention in order to attain for a predetermined cross section of the passage for the required airstream in the atomization zone, provides that the circular boundary walls 2 forming the annular chamber 29 are made adjustable so that the size of the cross-sectional passage is adjustable from a value zero up to a maximum value so that the fuel feed may be adjusted in relation to the amount of air in the airstream.
  • This adjustment can be accomplished by purely mechanical means as it is illustrated in the FIGS. 1 and 2.
  • the adjustment may, however, also be made in relation to the low pressure or in relation to the speed of the air at a point of the conduits which is suitable for measuring.
  • the fuel is supplied by a not illustrated fuel pump which is connected to a pipe 9 leading to the fuel chamber 22 of the carburetor.
  • This fuel chamber 22 is pro vided with an overflow regulator ll which permits the return flow of fuel by a pipe to leading to a suction line between the fuel supply container and the fuel pump.
  • the nozzle tube 6 is rigidly connected to one of the circular walls 2 of the annuiar chamber 29 and therefore is slidably adjusted with this wall 2.
  • the inlet end 7 of the tube 6 is conically enlarged and extends into the fuel chamber 22.
  • the cone-shaped inlet end 7 serves as accelerating pump when a quicker gas supply for the motor is required.
  • the amount of fuel which flows toward the nozzle tube 6 requires a basic adjustment. This adjustment can be accomplished in various ways. First of all, with the assistance of the overflow device II which regulates the return flowing fuel. The more fuel is returned, the less fuel reaches the nozzle tube 6. This overflow adjustment may also take place in relation to an opening condition of the annular chamber 29 and also may take place in relation to the opening condition of the nozzle outlet aperture in the displacement body 12 and also may take place in relation to the low pressure or the speed of the air at a suitable measuring point.
  • this tube 6 may be rigidly secured to the fuel feed device.
  • the fuel dosing then takes place by slidably adjusting the regulating needle 14.
  • the opening condition of the nozzle tube 6 may also be adjusted in relation to the opening condition of the annular chamber 29 for which purpose customary means may be employed or it may also take place in relation to the low pressure or the speed of the air at a suitable measuring point.
  • the embodiment of the invention illustrated in the FIGS. 1 and 2 is provided with a mechanical adjustment of the nozzle needle 14 in relation to the opening condition of the annular chamber 29.
  • a shaft 30 is connected with the lever system 3, 24 and is provided with a pin l9 which, in turn, actuates a cam disc 27 for operating the lever 28 which performs an axial displacement of the nozzle needle 14 in the plane of the drawing.
  • the needle 14 is slidably mounted in a tube 15 and the rear end of the needle 14 extends into a cylindrical casing 18 containing a helical spring 17 which surrounds the needle 14 and is arranged between the bottom of the casing 18 and a disc [6 fixedly attached to the needle 14.
  • the pitch of the cam disc 27 conforms to the different opening conditions of the annular chamber 29 and to the amounts of air which are permitted to flow into this chamber 29 so that a slidable adjustment of the nozzle needle 14 in the nozzle tube 6 controls the amount of fuel which is required for the respective amount of air.
  • the present invention provides a further development in which the boundary walls 2 are made of an elastic material or at least made partly of such elastic material.
  • the walls are then rigidly secured with their outer perimeter to the circumferential wall 1.
  • Suitable pressure rings on the rear faces of the boundary walls 2 having approximately a diameter which corresponds to the narrowest portion of the annular channel, are then employed for changing the cross section of the annular atomization zone 29.
  • boundary walls is not limited to the one illustrated in the drawing in order to practice the invention. If desired, other cross-sectional forms may be employed, for instance, plane, concave, or convexly curved.
  • 31 is a fuel supply line leading to the fuel pump 32 which conveys the aspirated fuel into the pipeline 33 and into the fuel chamber 4] of the carburetor.
  • the fuel chamber 4! is provided with a device for keeping the pressure constant. A portion of the fuel flows through the return line 34 back to the suction side of the fuel pump 32.
  • a sphere 46 Centrally between the two axially spaced and axially adjustable walls 44 is fixedly arranged a sphere 46.
  • This sphere 46 is provided with nozzle apertures 50 for the fuel and also with air ducts 47.
  • the two walls 44 When operating the gas pedal the two walls 44, with the assistance of not specifically disclosed devices, are slidably axially adjusted so that the cross section of the flow passages 42 and 43 are continuously varied.
  • the two elastic rings 45 on the outer circumference of the circular walls 44 seal the inner space of the carburetor against the housing wall.
  • the entering amount of air is determined by the size of the cross-sectional area 42 formed between the outer surface of the sphere 46 and the rounded inner faces of the walls 44.
  • the nozzle apertures 50 open at the narrowest point of the flow passages 42.
  • a small portion of the centrally entering air is conducted by the air ducts 47, owing to the back pressure, into the inner space of the sphere 46 and there takes with it the fuel which enters the sphere from feed pipe 40 and then combines again with the main airstream in the range of the flow passages 42.
  • the fuel dosing takes place with the assistance of the axially slidably mounted nozzle needle 49 whose slidable displacement is effected in a purely mechanical manner by part 48 in relation to the opening conditions of the two walls 44 or may also be effected with the assistance of known means in relation to the low pressure at a suitable measuring point, preferably in the central suction tube leading from the air filter to the carburetor.
  • the air acts as a multilayer shear stream so that a complete resolution of the fluid fuel takes place and an absolute homogeneously prepared fuel-air mixture is produced which leaves the carburetor at B.
  • This homogeneously prepared fuel-air mixture can not be brought to dissociation because it is gaseous, even when subjected to periodic oscillations of the air column in the suction conduit, so that all the individual combustion chambers are provided with a qualitative uniform mixture which improves the allover efficiency of the motor.
  • the atomizing principle of the invention in addition to the advantages of an improved fuel atomization, has additional advantages in constructural regard and in the fuel control technique.
  • the control possibilities produce an improved torque characteristic and also a favorable CO emission of the motors installed in motor vehicles, whereby always an optimum relation is automatically maintained between the amount of air necessary for combustion and the amount of fuel thereby assuring at the same time genuine vaporization of the fuel.
  • the regulation of the fuel feed or the slidable adjustment of the fuel regulating needle 49, respectively, is ac complished with the assistance of a measured value transducer 51.
  • the amount of air passing through the filter 52 is measured in the central suction tube between the air filter and the carburetor at 53 or a measured value equivalent to the amount of air is entered into the measured value transducer 51 which in turn transmits regulating pulses corresponding to this measured value to the fuel dosing device.
  • the measured value transducer 5 may also consist of a pneumatically actuated adjustment member or may consist of an electronic computer with an attached mechanical adjustment member which in addition to the measured value which is equivalent to the the amount of air, considers additional factors which influence the operation of the motor, such as the temperature, barometric pressure, humidity and the like, and transmits correspondingly corrected control pulses to the fuel dosing device.
  • the shut-off of the fuel feed takes place when the vehicle is decelerated and an enrichment of the fuel mixture takes place with the assistance of the measured value transducer when the motor has to start when it is cold.
  • a mechanically driven air blower is arranged in front of the carburetor which eliminates any charge losses resulting from fuel flow losses at full load.
  • the air drawn in at 54 and passing through the filter 52 is accelerated or receives a pressure increase by the rotor 56 driven by a motor 55.
  • An adjustment flap 59 causes a more or larger portion 58 of the airstream 57 which leaves the rotor casing, to flow through a bypass tube 60 back into the filter 52. If now the pedal 61 is depressed, the adjusting flap 59 is closed, the bypass tube 60 is also closed so that a larger amount of air can flow to the carburetor.
  • the amount of air which is conducted into the carburetor, or its equivalent measured value taken at 53, is converted by a measured value transducer 51 into an adjusting pulse and is transferred to the fuel regulating needle 49 and to a mechanical adjustment member 62.
  • the fuel regulating needle doses the fuel feed proportional to the amount of air passing through the carburetorv
  • the mechanical adjustment member 62 acts upon the levers 63, 64 and 65 and upon the adjustable walls 44 shown in FIG. 4 in such a manner that the same are axially slidably adjusted and adjust the size of the passage 42 to such a value that the speed of the air in this passage is independent of the amount of air and is always approximately constant.
  • the mechanical adjustment member 62 may also be con structed in such a manner that it operates directly in proportion to the air pressure at 53 in order to effect an adjustment of the walls 44.
  • the rotor 56 assists the pistons of the engine to draw the mixture into the combustion chambers and this assures a substantially improved filling of the cylinders particularly at full load compared with a device in which the fuel mixture is solely drawn into the cylinders by the low pressure produced by the downward moving pistons.
  • a device for preparing atomized fuels comprising a housing, means forming in said housing a variable atomization zone comprising an axially symmetrical structure including two parallel walls forming between the same an annular tunnel for receiving the atomized fuel, means for connecting said atomization zone with an air supply means, means for adjusting the cross section of said atomization zone in relation to the amount of fuel required, means for feeding separately air and fuel to the center of said atomization zone, and means for tangentially discharging the prepared atomized fuel from said annular tunnel, said means for adjusting the cross section of said atomization zone including at least one of said walls, means for axially adjustably mounting said wall, and means for axially adjusting said wall relatively to the other for changing the cross section of said atomization zone.
  • a device including means for regulating the amount of fuel which is introduced centrally into said atomization zone in relation to the adjusted size of crosssectional area of said annular tunnel.
  • a device including means for regulating the dosage of said fuel which is centrally introduced into said atomization zone in relation to the low pressure in said zone.
  • a device including means for regulating the dosage of said fuel which is centrally introduced into said atomization zone in relation to the amount of air passing through said zone.
  • a device in which the means for supplying fuel to the center of said atomization zone is provided with means for returning some of said fuel to the place of supply in relation to the amount of air required for atomization of the amount of fuel in said atomization zone.
  • a device in which at least one of said axially adjustable walls is provided with an annular elastic portion which is fixedly connected to a circumferential wall of said housing of said carburetor.
  • a device including a hollow displacement body arranged between said two walls at the center thereof, means for supplying fuel to the interior of said body, said body being provided with a nozzle aperture communicating with said atomization zone.
  • Device including means for regulating the amount of the prepared fuel mixture which is conducted to an internal combustion engine in relation to the pressure measured between the device and said engine.
  • Device including a fuel dosing means and an electronic computer which in accordance with the amount of air passing through said annular tunnel produces a control pulse which actuates said fuel-dosing means.
  • Device including a fuel-dosing means and an electronic computer which in accordance with the amount of air passing through said annular tunnel produces a control pulse which actuates said fuel-dosing means, said computer including means for rendering effective other factors such as temperature, barometric pressure and humidity which modify the atomized fuel which is tangentially discharged from said annular tunnel.
  • ll. Device including a fuel dosing means and an electronic computer which in accordance with the amount of air passing through said annular tunnel produces a control pulse which actuates said fuel-dosing means, said computer including means for controlling the ad mission of an additional amount of fuel required for starting a cold engine and also being adapted to close down the feed of fuel when the engine is to be made inoperative.
  • a device including a mechanically operated air blower connected with said air supply means.
  • a device including a mechanically operated air blower connected with said air supply means, the output of said blower being connected with an air input tube leading to said atomization zone, and a valve controlling a branch pipe leading from said air output tube to the input side of said blower, said valve controlling said branch pipe being adjusted by a manually operable foot pedal.
  • a device including means for axially adjusting said two walls relatively to one another in relation to the low pressure produced by the air admitted to said atomization zone at the point where the fuel is introduced into said zone.
  • a device including means for axially adjusting said two walls relatively to each other in relation to the amount of air admitted into said atomization zone.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Fuel-Injection Apparatus (AREA)
US859125*[A 1968-09-28 1969-12-18 Carburetor Expired - Lifetime US3591148A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19681776156 DE1776156A1 (de) 1968-09-28 1968-09-28 Vergaser fuer Kraftstoffe
DE19691931642 DE1931642A1 (de) 1969-06-21 1969-06-21 Vergaser fuer Kraftstoffe

Publications (1)

Publication Number Publication Date
US3591148A true US3591148A (en) 1971-07-06

Family

ID=25755713

Family Applications (1)

Application Number Title Priority Date Filing Date
US859125*[A Expired - Lifetime US3591148A (en) 1968-09-28 1969-12-18 Carburetor

Country Status (2)

Country Link
US (1) US3591148A (fr)
FR (1) FR2019124A1 (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4119068A (en) * 1976-04-09 1978-10-10 Csonka John J Carburetor for internal combustion engines
US4234522A (en) * 1975-12-03 1980-11-18 Regie Nationale Des Usines Renault Variable diffuser for carburetors
US4263235A (en) * 1978-02-22 1981-04-21 Robert Bosch Gmbh Mixture preparation apparatus
US5059357A (en) * 1989-06-05 1991-10-22 Hartmut Wolf Vortex chamber atomizer
US20030221662A1 (en) * 1998-07-28 2003-12-04 Wijaya Heru P. Air flow-twisting device on an air inlet system of internal combustion engine

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1160662A (en) * 1915-07-31 1915-11-16 Daimler Motoren Carbureter.
US1947162A (en) * 1930-12-04 1934-02-13 Bendix Res Corp Carburetor
US1973362A (en) * 1932-05-13 1934-09-11 Weiertz Axel Hugo Carburetor
US2655356A (en) * 1949-12-02 1953-10-13 Herman F Borcherts Carburetor for internalcombustion engines
FR1257832A (fr) * 1960-02-26 1961-04-07 Perfectionnements apportés aux dispositifs d'alimentation en air pour carburateurs
US3036564A (en) * 1958-11-18 1962-05-29 R E T E M Rech S Et Etudes Ele Low-pressure fuel injection device
US3286997A (en) * 1961-04-18 1966-11-22 Thiokol Chemical Corp Vortex fuel injector
US3336017A (en) * 1965-01-12 1967-08-15 Univ California Compound cyclonic flow inductor and improved carburetor embodying same

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1160662A (en) * 1915-07-31 1915-11-16 Daimler Motoren Carbureter.
US1947162A (en) * 1930-12-04 1934-02-13 Bendix Res Corp Carburetor
US1973362A (en) * 1932-05-13 1934-09-11 Weiertz Axel Hugo Carburetor
US2655356A (en) * 1949-12-02 1953-10-13 Herman F Borcherts Carburetor for internalcombustion engines
US3036564A (en) * 1958-11-18 1962-05-29 R E T E M Rech S Et Etudes Ele Low-pressure fuel injection device
FR1257832A (fr) * 1960-02-26 1961-04-07 Perfectionnements apportés aux dispositifs d'alimentation en air pour carburateurs
US3286997A (en) * 1961-04-18 1966-11-22 Thiokol Chemical Corp Vortex fuel injector
US3336017A (en) * 1965-01-12 1967-08-15 Univ California Compound cyclonic flow inductor and improved carburetor embodying same

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4234522A (en) * 1975-12-03 1980-11-18 Regie Nationale Des Usines Renault Variable diffuser for carburetors
US4119068A (en) * 1976-04-09 1978-10-10 Csonka John J Carburetor for internal combustion engines
US4263235A (en) * 1978-02-22 1981-04-21 Robert Bosch Gmbh Mixture preparation apparatus
US4314951A (en) * 1978-02-22 1982-02-09 Robert Bosch Gmbh Mixture preparation apparatus
US5059357A (en) * 1989-06-05 1991-10-22 Hartmut Wolf Vortex chamber atomizer
US20030221662A1 (en) * 1998-07-28 2003-12-04 Wijaya Heru P. Air flow-twisting device on an air inlet system of internal combustion engine
US6938608B2 (en) 1998-07-28 2005-09-06 Heru P. Wijaya Air flow-twisting device on an air inlet system of internal combustion engine

Also Published As

Publication number Publication date
FR2019124A1 (fr) 1970-06-26

Similar Documents

Publication Publication Date Title
US8627799B2 (en) Induction and fuel delivery system for piston engine
US3610213A (en) Fuel injection system
CN1227621A (zh) 燃料－空气混合装置
US4235210A (en) Fuel supply apparatus for internal combustion engines
US2730339A (en) Fuel distributing system
US3591148A (en) Carburetor
US2369216A (en) Combustible preparing device
US3326538A (en) Vapor generator
US3282572A (en) Method and apparatus for supplying fuel-air mixtures to internal combustion engines
US6047956A (en) Atomizing fuel carburetor
US4955349A (en) Device for preparation of a fuel-air mixture for internal combustion engines
US1273356A (en) Fuel-supply means for combustion-engines.
US3814391A (en) Vehicle fuel injector
US1947162A (en) Carburetor
US2294743A (en) Fuel supply, carburetion, and supercharger system and apparatus for internal combustion engines
US4087491A (en) Carburetor with hollow air control valve
US3955548A (en) Fuel/air mixing device for internal combustion engine carburetor
US2011997A (en) Carburetor
US3269658A (en) Metering device
US4159014A (en) Method and apparatus for preparation and control of air-fuel mixture to the air intake of an engine
US3223394A (en) Aspirator for a carburetor
US3857912A (en) Vehicle fuel injector and carburetor unit
US4503003A (en) Method and apparatus for vaporizing fuel by centrifugal action
US1793554A (en) Apparatus for control of combustion in internal-combustion engines
US1912047A (en) Manifold for internal combustion engines