EP0367263B1 - Vergaserzusammenbau - Google Patents

Vergaserzusammenbau Download PDF

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Publication number
EP0367263B1
EP0367263B1 EP89120303A EP89120303A EP0367263B1 EP 0367263 B1 EP0367263 B1 EP 0367263B1 EP 89120303 A EP89120303 A EP 89120303A EP 89120303 A EP89120303 A EP 89120303A EP 0367263 B1 EP0367263 B1 EP 0367263B1
Authority
EP
European Patent Office
Prior art keywords
bowl
fuel
nozzle
passage
carburetor
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
EP89120303A
Other languages
English (en)
French (fr)
Other versions
EP0367263A3 (en
EP0367263A2 (de
Inventor
Thomas G. Guntly
Mark E. Federspiel
Michael J. Kurth
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.)
Tecumseh Products Co
Original Assignee
Tecumseh Products Co
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 Tecumseh Products Co filed Critical Tecumseh Products Co
Publication of EP0367263A2 publication Critical patent/EP0367263A2/de
Publication of EP0367263A3 publication Critical patent/EP0367263A3/en
Application granted granted Critical
Publication of EP0367263B1 publication Critical patent/EP0367263B1/de
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
    • 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
    • F02B63/02—Adaptations of engines for driving pumps, hand-held tools or electric generators; Portable combinations of engines with engine-driven devices for hand-held tools
    • 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
    • F02M17/40—Selection of particular materials for carburettors, e.g. sheet metal, plastic, or translucent materials
    • 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
    • F02M17/42—Float-controlled carburettors not otherwise provided for

Definitions

  • This invention relates to carburetors for internal combustion engines and in particular to carburetors for small internal combustion engines such as are used in lawnmowers, snowblowers, generators, pumps and the like, of the type defined in the preamble of claim 1-
  • Prior art carburetors generally include a die-cast body made, for instance, from cast aluminum or zinc to which a fuel bowl assembly is secured by means of threaded fasteners.
  • a disadvantage of this prior art carburetor construction is the high cost of manufacturing the die-cast aluminum body. Cost is incurred not only by casting the body but also by machining of the cast body to provide numerous passages and apertures.
  • Another disadvantage of such prior art die-cast aluminum bodies is that die cast aluminum is often porous so that such die-cast aluminum bodies must be impregnated with a special sealing material. Other die-casting materials have also been used, such as, for instance zinc which is less porous than aluminum.
  • zinc is both higher in weight and cost than aluminum and is therefore not a preferred material since it is important to make small internal combustion engines light in weight, particularly those engines which are used in hand-held or easily maneuvered equipment, such as leaf blowers, lightweight snowblowers, lawnmowers and the like.
  • the fuel bowls of prior art carburetor assemblies have generally been made of either stamped steel or aluminum.
  • a carburetor of the type defined in the preamble of claim 1 is disclosed in GB-A-900 443, wherein the body is made of sheet metal and the nozzle is press-fitted into an opening of the cover of the bowl assembly and slidably engaged in an opening of the body (mixture conduit), while a bolt 36 urges the bowl assembly against the body.
  • the prior assembly is however disadvantageous in view of the high manufacture and mounting costs and because the connection of nozzle to the bowl and body is not reliable, so that, especially in presence of vibrations, shocks and hits as they are frequent during operation of a carburetor, the nozzle may become no more able to ensure proper sealing to the carburetor body or even may separate from the bowl and body.
  • throttle bore Two items which are particularly difficult to mold in plastic carburetors are the throttle bore and the throttle shaft bore. Both of these bores must be held to very tight tolerances and their alignment in the carburetor body is critical. Good performance of a carburetor requires a true throttle bore, especially in a full progression carburetor. Even if close tolerances can be held during the plastic molding process, in time, after the plastic structure has been subjected to thermal cycling and/or stress under load, the plastic material tends to deform due to plastic creep and the tolerance limits are therefore exceeded. Manufacturers have attempted to avoid this problem by eliminating certain functions from the carburetor such as for instance an idle system, thereby both limiting performance capabilities and avoiding the need for precision bores.
  • the throttle bore, throttle shaft bore and idle progression holes are machined in an aluminum portion of the carburetor in order to ensure close tolerances.
  • high quality glass reinforced plastic or mineral filled plastic materials have been used. However, such filler materials make drilling and machining of the plastic carburetor very difficult. Furthermore the cost of high quality plastic can be as much as the cost of aluminum.
  • the carburetor assembly in one embodiment thereof, comprises a body formed of extruded aluminum and having a through bore therein.
  • a molded plastic venturi is inserted into the through bore and, by virtue of a groove in its exterior surface, forms a passage with the extruded body for the flow of fluids therethrough.
  • the amount of machining of the extruded body which is required is held to a minimum.
  • the fuel bowl is molded out of plastic and is provided with locating studs whereby the fuel bowl is positively located on the body.
  • a spring clip secures the fuel bowl to the body.
  • a gasket is inserted between the fuel bowl and the extruded body to provide a proper seal.
  • a plastic molded nozzle is received in a well which is molded integrally with the fuel bowl.
  • the nozzle extends out of the fuel bowl and through an aperture in the extruded aluminum body and through another aperture in the molded venturi, thereby locating the venturi.
  • the fuel bowl is additionally provided with a fuel inlet and, in one embodiment, with an idle mixture screw and a main mixture screw.
  • the fuel bowl may be provided with a molded primer housing in which a primer bulb is mounted.
  • An advantage of the present invention is that it provides a low cost carburetor assembly which has excellent performance and is very simple to assemble whereby manufacturing of the carburetor may be automated.
  • Still another advantage of the present invention is that by the use of a molded plastic venturi insert various sized venturis may be used for the same extruded carburetor body whereby the carburetor may be adapted for various engines.
  • Yet another advantage of the present invention is that the molded plastic carburetor fuel bowl may be removed from the engine without removing the carburetor whereby the carburetor may be serviced without disconnecting of linkages and controls, and the subsequent necessary reconnection and adjustment thereof. Additionally, few tools are needed to disassemble the carburetor.
  • Another advantage is that the spring clip maintains sealing pressure on the gasket even after the gasket has taken a compression set.
  • Yet still another advantage of the present invention is that the cost of required tooling to manufacture the carburetor is much lower than the tooling required for prior art carburetors.
  • venturi insert is so designed that it is sealed in the through bore of the carburetor body without the use of sealing compounds, O-rings, or the like.
  • a still further advantage of the present invention is that the extruded aluminum carburetor body does not need to be impregnated with sealing material as was the case with prior art die cast aluminum carburetor bodies.
  • a further advantage of the present invention is that the carburetor nozzle assembly has been so constructed that it is constantly biased or urged into contact with the aluminum body for proper sealing thereto by means of a bias spring.
  • a carburetor assembly 10 including a body 12.
  • the body is extruded and, therefore, all of the extruded body shapes are axial in nature with the axis extending from right to left as seen in Fig. 2.
  • the body includes several machined bores, as further explained hereinafter, which bores may be machined by automatic equipment, as desired. Due to the fact that the body is extruded, it is relatively easy to machine and handle as all shapes of the extruded body are axial in nature.
  • extruded aluminum is not as porous as die cast aluminum, whereby the extruded body need not be impregnated to seal it as was the case with prior art die cast aluminum carburetor bodies. Since the material of the body is aluminum, it is light in weight as is desired for small engine carburetors.
  • a fuel bowl 14 is shown which, in the disclosed embodiment, is made of molded plastic material.
  • Fuel bowl 14, in the enclosed embodiment, is made from a mineral filled polyester so that it has good chemical resistance to gasoline and its by-products and has good dimensional stability. However, it should be understood that the fuel bowl may be manufactured from other plastics or cast metal and the like if desired.
  • Fuel bowl 14 is secured to body 12 by means of a spring clip 16.
  • Spring clip 16 (Figs. 6 and 8) is resilient and may be made of heat treated spring steel or music wire. Thus, the spring clip may be a stamped or formed part which is then shaped and heat treated.
  • the spring clip completely surrounds the fuel bowl and has a pair of bights 17 which engage with the shoulders 15a on flanges 15 of extruded aluminum body 12, or into holes in said body, as best seen in Figs. 1 and 6.
  • Clip 16, in the embodiment shown in Figs. 1 through 8, comprises a spring wire having a lower portion 16a that engages a groove 19a in protruding portion 19 of fuel bowl 14 (Fig. 10).
  • spring clip 16 may be of a flat design manufactured from stamped steel.
  • a gasket 13 is inserted between flange 15 of extruded body 12 and the molded plastic fuel bowl 14, thereby sealing the fuel bowl 14 to the body 12.
  • a nozzle tube 18 is shown (Fig. 1) which extends from fuel bowl 14, through gasket 13, a nozzle aperture 21 in body 12 and into the through bore 20 of the carburetor body 12.
  • the nozzle performs the function of conducting fuel from the bowl 14, as further explained hereinafter, into through bore 20 wherein it is mixed with air prior to being inducted to the engine cylinder.
  • a venturi insert 22 is located inside through bore 20. Venturi insert 22, in the disclosed embodiment, is formed of a molded plastic material, however, it should be understood that it may also be a cast or machined part made of aluminum or the like.
  • Venturi insert 22 includes a venturi throat 24, a nozzle aperture 26, an annular channel or groove 28 around its exterior surface, and an axial slot or groove 30 (Fig. 7).
  • annular channel 28 and axial slot 30 into the venturi, machining operations to form certain passageways in the carburetor are eliminated. This reduces costs and furthermore allows flexibility in that different size venturi inserts may be used with the same size body 12, thus reducing inventory.
  • venturi insert 22 also includes an outwardly tapered portion 32 at the trailing end thereof.
  • This tapered lip portion 32 has a slightly larger outer diameter than the diameter of the main portion of venturi insert 22. By virtue of this slightly larger outside diameter, taper 32 will seal venturi 22 against the wall of through bore 20, thereby eliminating any leakage around the venturi insert 22.
  • a throttle shaft bore 34 is provided in body 12 for receiving a throttle shaft 36 which is secured to a throttle plate 38 by fastener 39 for controlling the fluid flow through bore 20, as is conventional.
  • a dust seal washer 40 is also provided around throttle shaft 36. Attached to the throttle shaft 36 is a speed screw assembly 37 whereby the setting of the throttle shaft may be adjusted.
  • passages 42, 44 and 46 are machined in extruded body 12.
  • a plug 48 is then inserted into the end of passage 46 and a restrictor 50 is inserted into passage 42.
  • Restrictor 50 functions with the idle system to limit the air entering the idle system.
  • the fuel well is vented through passage 31, channel 28, and passages 46 and 42.
  • a bore 45 is shown in the extruded body 12. This bore is covered with a Welch plug and connects to passage 44 (Figs. 1 and 3) whereby passage 44 is provided with air.
  • the carburetor may be provided with a primer comprising a remote primer bulb connected to the bowl of the carburetor by a tube (not shown) in a manner well known in the art. It should be noted that the carburetor may be manufactured with either a priming system or a choke system and if the carburetor includes a priming system, the choke system may be eliminated from the carburetor. If the mixing screw system is included, then the orifice 84 (Figs 1 and 2) is not needed. The same carburetor body 12 and fuel bowl 14 may be used and adapted to provide both types of systems.
  • Well 66 is formed by a wall 68 and is vented by means of a passage 69 which connects with air passage 31.
  • a compression spring 70 is located in the bottom of well 66 and urges nozzle 18 upwardly so that shoulder 72 of nozzle 18 is in engagement with gasket 13, thereby sealing nozzle 18 to the body 12 and preventing fuel from flowing upwardly through bore 21 through which nozzle 18 extends into body 12.
  • Nozzle 18 includes a groove 74 near its lower end for receiving an O-ring 76 whereby the inlet of nozzle 18 is sealed in well 66. Thus, no fuel can flow from the lower portion of well 66 past nozzle 18 into the upper portion of well 66.
  • Nozzle 18 is hollow and includes a nozzle passage 82 and two apertures 78 and 80. In the embodiment of Figs. 1 - 8, the lower portion of nozzle passage 82 has a reduced diameter to form a jet or metering orifice indicated at 84.
  • Fuel bowl 14 includes two further passages 90 and 92 which extend through mixing screw housing 86. Mixing screw housing 86 is an integral part of molded fuel bowl 14. Passages 92 and 90 are open to the fuel bowl and also extend through wall 68.
  • fuel which collects in fuel bowl 14 may flow through passage 92 into the lower portion of well 66 after which it is drawn upwardly through metering jet 84 into nozzle passage 82.
  • a screw 96 is received in float bowl 14.
  • a plug 98 prevents fuel from flowing from the bowl through passage 61 into well 66.
  • Plug 94 blocks passage 90, thereby preventing fuel from flowing out of fuel bowl 14.
  • passages 90 and 92 are used to house mixture screws in the adjustable embodiment of the carburetor. In the embodiment of Figs. 1 - 8, fuel flows from bowl 14 into well 66 and is metered through jet 84 from well 66 into nozzle passage 82 and is drawn upwardly into venturi throat 24.
  • Air is drawn into nozzle passage 82 through apertures 78 and 80.
  • the pressure generated in fuel bowl 14 will pressurize the fuel in nozzle passage 82 whereby fuel will be squirted into venturi throat 24.
  • little fuel will pass upwardly from well 66 into channel 28.
  • the entire fuel bowl assembly 14 is located with respect to the body 12 by means of a pair of locating studs 106, best shown in Fig. 4.
  • a float 108 is located inside fuel bowl 14 and functions in well-known manner to operate a needle valve 120 for maintaining the fuel supply in fuel bowl 14 at a predetermined level.
  • Float 108 is a two-piece, heat sealed acetal plastic and includes a float arm 110 and a pivot pin 112, which is received in cradle 114.
  • the float pin 12 is snapped into the cradle 114 and is retained therein.
  • arm 110 which is attached to needle valve 120, causes the valve to open and close to control the flow of fuel into bowl 14.
  • Needle valve 120 including valve stem 128 is retained in a cavity of float arm 110. Needle valve 120 is provided with a seat 122 which is located in an aperture 124. Seat 122 may be made of a flexible and resilient material such as fluorocarbon rubber, such as Viton made by DuPont, and is pressed into aperture 124. Fuel flows through passage 126 and, when the needle valve 120 moves upwardly because float 108 drops due to a low level of fuel in bowl 14, permits fuel to flow past needle valve 120 and into bowl 14. Needle valve 120 operates inside a locator tube 130, which is directly molded in the fuel bowl. Tube 130 includes an axial slot (not shown) to permit needle locator tube 130 to drain therefrom and to flow better.
  • Tube 130 includes an axial slot (not shown) to permit needle locator tube 130 to drain therefrom and to flow better.
  • extruded body 12 is secured to fuel bowl assembly 14 and is sealed thereto by means of gasket 13.
  • Spring clip 16 resiliently secures the fuel bowl 14 assembly to body 12.
  • Fuel flows into the fuel bowl through fuel inlet 88.
  • the fuel level in bowl 14 is controlled by means of float 108 and needle valve 120.
  • Fuel flows into the bottom portion of well 66 through passage 92.
  • Spring 70 maintains fuel nozzle 18 in sealing contact with gasket 13.
  • Fuel is metered through jet 84 and is drawn into the throat of venturi 24.
  • Fuel bowl 14 is vented by means of passage 62, annular groove 28, and connecting axial passage 30 into through bore 20 of body 12. When the primer bulb is depressed, fuel will be squirted into throat 24 of venturi 22.
  • the bottom of the fuel bowl molding includes a pair of raised portions or shoulders 190 on either side of groove 151 whereby pockets 192 are formed. Fuel will therefore flow over the bottom of the fuel bowl 194 and overflow shoulders 190 after which it flows through groove 151 into the bottom of well 66. However, any dirt in the gasoline will be trapped in pockets 192 and therefore will not flow into the well 66, thereby preventing clogging of orifice 158 (see Fig. 11) and other passages in nozzle 18.
  • FIG. 9 an alternative embodiment of the invention is shown including idle and power mixture adjusting screws.
  • the through bore 20 in body 12 is machined out to a larger diameter at the choke end of the carburetor as shown at 140.
  • the choke shaft 142 is inserted through an aperture 146 in body 12 and a choke plate 144 is secured to choke shaft 142 whereby the air flow into the carburetor may be regulated for cold starting as is customary.
  • the larger bore 140 is provided to make up for the space taken up by the choke shaft and choke plate whereby the amount of air which can be taken into the carburetor is not reduced.
  • a washer 148 is provided around shaft 142 to seal the shaft to body 12.
  • adjusting screws 152 and 154 are provided for the carburetor.
  • 152 is the idle mixture screw and 154 is the power mixture screw.
  • Screws 152 and 154 include self tapping threads whereby mixing screw housing 86 does not need to be provided with threads during molding thereof.
  • Screws 152 and 154 include conical tips 153 and 155 which form orifices in 156 and 158 in apertures 150 and 151 when they are driven in to their limits.
  • the tips 153 and 155 are configured, with an annular shoulder to act as a stop, so that they cannot be driven too far into apertures 150 and 151.
  • Screws 152 and 154 respectively include stems 168 and 170.
  • idle and power mixture adjusting screws are located together whereby all of the controls, including the adjusting screws and the fuel valve 174 are located in the same general area of the carburetor whereby access to and serviceability of the carburetor is much improved.
  • Stems 168 and 170 of respective screws 152 and 154 are sealed to passages 90 and 92 by means of O-rings 162 to prevent fuel from leaking out of bowl 14. Additionally, an O-ring 164 seals the stem of screw 152 to wall 165, thereby preventing fuel from leaking out of bowl 14 into passage 61. It should also be noted that in this embodiment nozzle 18 does not include a metering jet aperture. Metering is accomplished by screws 152 and 154.
  • fuel from bowl 14 may pass through annular orifice 158, passage 151 into the bottom of well 66, thence into nozzle passage 82 through aperture 80 into well 66, thence through passage 150 and annular orifice 156 into passage 61 and from there by means of idle passage 166 and passage 42, into the idle pocket 167 and through several small holes drilled into bore 20 and then into the engine.
  • a welch plug is provided to cover and seal idle pocket 167.
  • a fuel valve 174 is also shown as part of the fuel bowl assembly.
  • Valve 174 includes passages 178 and 180 for connecting respectively to fuel inflow passage 176 and fuel outflow passage 126.
  • fuel can flow from the inlet 88 directly to the needle valve 120.
  • the valve 174 is rotated, the flow of fuel is interrupted.
  • the carburetor of Figs. 9, 10 and 11 operates in much the same way as the carburetor of Figs. 1 - 8 with the exception that the choke plate 144 as well as the idle and power mixture adjusting screws 152 and 154 are all adjustable. Thus control over the flow of fuel to the engine may be accomplished by the use of those controls as well as the throttle valve 38.

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  • 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)
  • Fuel-Injection Apparatus (AREA)
  • Control Of Throttle Valves Provided In The Intake System Or In The Exhaust System (AREA)

Claims (10)

  1. Vergaser, umfassend: Ein Gehäuse (12) mit einer Durchgangsbohrung (20), die einen Lufteinlaß aufweist; eine Kraftstoffwanneneinrichtung mit einer Wanne (14), die am Gehäuse (12) befestigt ist; ein im wesentlichen ringförmiges Venturi-Düsenelement (22), das in der Durchgansgbohrung (20) montiert ist; und einer Düse (18), die ein unteres Ende hat, welches in der Wanne (14) zum Leiten von Kraftstoff aus der Wanne (14) in das Venturi-Düsenelement (22) angeordnet ist, dadurch gekennzeichnet, daß das Gehäuse (12) extrodiert ist, daß sich die Düse (18) durch eine Radialbohrung (26) im Venturi-Düsenelement (22) hindurch erstreckt, daß die Wanne eine Beaufschlagungsfeder (70) aufnimmt, die zwischen der Wanne und der Düse wirkt, um die Düse (18) gegen das Gehäuse (12) dadurch zu drücken, daß die Wanneneinheit die Düse (18) erfaßt.
  2. Vergaser nach Anspruch 1, dadurch gekennzeichnet, daß das Venturi-Düsenelement (22) ein geformtes Plastikelement ist.
  3. Vergaser nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß das Venturi-Düsenelement (22) ein hülsenförmiges Element ist, daß der eine Endbereich des hülsenförmigen Elementes elastisch ist und einen radial sich nach außen verjüngenden Umfang (32) aufweist, und daß der genannte eine Endbereich beim Einsetzen des Venturi-Düsenelementes in die Durchgangsbohrung (20) umgebogen wird und eine Umfangsdichtung mit der Durchgangsbohrung (20) bildet.
  4. Vergaser nach einem der vorausgegangenen Ansprüche, dadurch gekennzeichnet, daß das Venturi-Düsenelement (22) eine Ringut (28) um seinen Außenumfang aufweist, daß das Venturi-Düsenelement weiterhin eine Axialnut (30) auf seinem äußeren Umfang aufweist, daß das Axialnut mit der Ringnut in Verbindung steht, daß die Ringut und die Axialnut jeweils einen Ringkanal und einen Axialkanal mit der Durchgangsbohrung bilden, und das der Ringkanal mit der Kraftstoffwanne durch einen Kanal (31) im extrodierten Gehäuse (12) verbunden ist.
  5. Vergaser nach einem der vorausgegangenen Ansprüche, gekennzeichnet durch ein Standrohr (66), das in der Kraftstoffwanne (14) gebildet ist, wobei die Düse (18) hülsenförmig ist und ein im Standrohr angeordnetes unteres Ende aufweist.
  6. Vergaser nach einem der vorausgegangenen Ansprüche, dadurch gekennzeichnet, daß die Beaufschlagungsfeder ein elastisches Federelement (70) aufweist, das zwischen Düse (18) und Wanne (14) angeordnet ist, um die Düse (18) in dichtenden Eingriff mit dem extrodierten Gehäuse (12) zu bringen.
  7. Vergaser nach den Ansprüchen 5 und 6, dadurch gekennzeichnet, daß das elastische Federelement (70) zwischen dem unteren Ende der Düse (18) und dem Boden des Standrohres (66) angeordnet ist.
  8. Vergaser nach einem der vorausgegangenen Ansprüche, gekennzeichnet durch ein elastisches Klemmelement (16) zum Sichern der Kraftstoffwanne (14) am extrodierten Gehäuse.
  9. Vergaser nach einem der vorausgegangenen Ansprüche, dadurch gekennzeichnet, daß die Kraftstoffwanne (14) aus Kunststoff geformt ist und einen Kraftstoff-Vorratsbehälter umfaßt, daß eine Leerlaufgemisch-Justierschraube (152) und eine Hauptgemisch-Justierschraube (154) in die Wanne eingeschraubt sind, daß die Kraftstoffwanne ein Standrohr 66 aufweist, das aus einer aufrecht stehenden Wand gebildet ist, daß die Wand eine Bohrung 150 aufweist, die derart gestaltet ist, daß sie den oberen Teil einer (152) der beiden Gemischjustierschrauben (152, 154) aufnimmt, und daß der ober Teil derart gestaltet ist, daß er ein Öffnung (156) in der Bohrung (150) bildet.
  10. Vergaser nach Anspruch (9), dadurch gekennzeichnet, daß sich die Leerlauf- und die Haupt-Justierschraube (152, 154) durch wenigstens einen Teil des Kraftstoff-Vorratsbehälters der Wanne (14) hindurch erstrecken.
EP89120303A 1988-11-04 1989-11-02 Vergaserzusammenbau Expired - Lifetime EP0367263B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US26701988A 1988-11-04 1988-11-04
US267019 2008-11-07

Publications (3)

Publication Number Publication Date
EP0367263A2 EP0367263A2 (de) 1990-05-09
EP0367263A3 EP0367263A3 (en) 1990-07-18
EP0367263B1 true EP0367263B1 (de) 1993-02-10

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EP (1) EP0367263B1 (de)
JP (1) JP2528366B2 (de)
AU (1) AU621679B2 (de)
CA (1) CA1337470C (de)
DE (1) DE68904869T2 (de)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10017556B4 (de) * 2000-04-03 2004-07-01 Heppes, Frank, Dipl.-Ing. Venturidüse mit veränderbarem nutzbarem Unterdruck
DE102018100387B4 (de) * 2018-01-09 2021-03-18 Guido Wensing Vergaser für Brennkraftmaschinen
CN110700977A (zh) * 2018-07-10 2020-01-17 华益机电有限公司 一种燃油供给系统

Citations (1)

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Publication number Priority date Publication date Assignee Title
US4000224A (en) * 1974-12-19 1976-12-28 Harold Phelps, Inc. Carburetor and fuel supply system

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FR563330A (fr) * 1923-03-06 1923-12-03 Système nouveau d'assemblage de la cuve de niveau constant dans les carburateurs
US2701709A (en) * 1947-03-05 1955-02-08 Bendix Aviat Corp Carburetor by-pass control
US3089685A (en) * 1960-05-09 1963-05-14 Acf Ind Inc Carburetor
US3231250A (en) * 1962-08-30 1966-01-25 Acf Ind Inc Carburetor
JPS55180954U (de) * 1979-06-13 1980-12-26
FR2460178A1 (fr) * 1979-07-03 1981-01-23 Gachot Jean Procede pour la fabrication d'un piston et pistons en resultant
JPS6045852U (ja) * 1983-09-06 1985-03-30 愛三工業株式会社 気化器
JPS60107347U (ja) * 1983-12-22 1985-07-22 本田技研工業株式会社 気化器
US4864705A (en) * 1988-11-04 1989-09-12 Tecumseh Products Company Method of making a carburetor

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4000224A (en) * 1974-12-19 1976-12-28 Harold Phelps, Inc. Carburetor and fuel supply system

Also Published As

Publication number Publication date
JPH02173346A (ja) 1990-07-04
AU621679B2 (en) 1992-03-19
JP2528366B2 (ja) 1996-08-28
DE68904869T2 (de) 1993-05-27
EP0367263A3 (en) 1990-07-18
DE68904869D1 (de) 1993-03-25
AU4437089A (en) 1990-05-10
EP0367263A2 (de) 1990-05-09
CA1337470C (en) 1995-10-31

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